<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>1502</id>
    <completedYear>2020</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>715</pageFirst>
    <pageLast>715</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>12</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-03-24</completedDate>
    <publishedDate>2020-03-24</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Robust Polymer Planar Bragg Grating Sensors Embedded in Commercial-Grade Composites</title>
    <abstract language="eng">This contribution demonstrates the functionality of polymer planar Bragg grating (PPBG) sensors integrated into commercial-grade carbon fiber reinforced polymer (CFRP) components. Multiple CFRP specimens are generated by curing a stack of pre-impregnated fibers inside of a heated mechanical press, exposing the polymer sensor to a pressure of 7 bar and a temperature of 120 °C for 2 h. After integration, the sensor still exhibits a strong and evaluable signal. Subsequent flexural experiments reveal a linear response of the integrated sensor’s Bragg wavelength to the CFRP specimen’s maximum deflection. Additional findings demonstrate that the embedded PPBG can be used to detect plastic deformations of a CFRP workpiece, whereas a linear correlation of plastic deformation to the resulting Bragg signal offset is determined. A plausibility check of the obtained results is delivered by a comparison of three-point flexural experiments on bulk CFRP workpieces, without integrated sensors and additional specimens featuring external optical sensors affixed to their surface. It is found that PPBGs based on cyclic olefin copolymers are able to overcome the temperature-related limitations of traditional polymer-based optical sensors and can thus be directly integrated into commercial-grade composites during production.</abstract>
    <parentTitle language="eng">Polymers</parentTitle>
    <identifier type="doi">10.3390/polym12030715</identifier>
    <identifier type="url">https://www.mdpi.com/2073-4360/12/3/715/htm</identifier>
    <enrichment key="copyright">1</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Stefan Kefer</author>
    <author>Theresia Sauer</author>
    <author>Steffen Hessler</author>
    <author>Michael Kaloudis</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg grating sensors</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>carbon fiber reinforced polymers</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>cyclic olefin copolymers</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Optischer Sensor</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Clean Tech</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
    <file>https://opus4.kobv.de/opus4-h-ab/files/1502/200324_Kefer_Polymers.pdf</file>
  </doc>
  <doc>
    <id>1493</id>
    <completedYear>2020</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>647</pageFirst>
    <pageLast>655</pageLast>
    <pageNumber>9</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>Institute of Electrical and Electronics Engineers</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-03-05</completedDate>
    <publishedDate>2020-03-05</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Fabrication and Applications of Polymer Planar Bragg Grating Sensors based on Cyclic Olefin Copolymers</title>
    <abstract language="eng">This contribution reviews recent advancements, current research and possible applications of polymer planar Bragg grating (PPBG) sensors with a focus on the utilization of cyclic olefin copolymer (COC) substrates. COC-PPBGs can be handled and fabricated efficiently by employing a single writing step procedure which features simultaneous generation of waveguide and Bragg grating structure within an injection molded substrate. The resulting photonic structures exhibit an attenuation as low as 1.2 dB cm-1 and a reflectivity up to 99 %. The potential of COC-PPBGs for high-temperature applications is proven by demonstrating temperature measurements up to 160 °C. Moreover, it is possible to employ single PPBGs for multidimensional stress and strain sensing or even three-dimensional shape reconstruction. Due to their excellent properties, it is feasible to integrate COC-PPBGs into commercial-grade carbon fiber reinforced polymer workpieces for structural health monitoring. Furthermore, utilization of appropriate coatings enables functionalization of PPBGs for refractive index sensing and thus biochemical applications. Beside the fabrication and characterization of COC-based PPBGs, this contribution exemplifies and reviews such applications.</abstract>
    <parentTitle language="eng">2019 Photonics &amp; Electromagnetics Research Symposium - Fall (PIERS - Fall)</parentTitle>
    <identifier type="isbn">978-1-7281-5304-9</identifier>
    <identifier type="doi">10.1109/PIERS-Fall48861.2019.9021801</identifier>
    <identifier type="url">https://ieeexplore.ieee.org/document/9021801</identifier>
    <enrichment key="copyright">1</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Manuel Rosenberger</author>
    <author>Steffen Hessler</author>
    <author>Maiko Girschikofsky</author>
    <author>Stefan Belle</author>
    <author>Gian-Luca Roth</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg gratings , Gratings , Optical waveguides , Temperature sensors , Substrates</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Optischer Sensor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1663</id>
    <completedYear>2020</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>3601</pageFirst>
    <pageLast>3604</pageLast>
    <pageNumber/>
    <edition/>
    <issue>13</issue>
    <volume>45</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-06-26</completedDate>
    <publishedDate>2020-06-26</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Hypersensitive H2 sensor based on polymer planar Bragg gratings coated with Pt-loaded WO3-SiO2</title>
    <abstract language="eng">This letter demonstrates a novel hydrogen sensor based on a polymer planar Bragg grating coated with Pt-loaded WO3-SiO2. The reflected Bragg signal shows a distinct peak splitting correlated to substrate anisotropies originating from the injection molding process. Especially at low H2 concentrations, both sensing peaks &#13;
exhibit an outstanding response to the heat generated by the exothermic reaction between hydrogen molecules and coating. Thereby, a hydrogen volume ratio of 50 ppm &#13;
leads to a Bragg wavelength shift of -37 pm, which yields an outstandingly low detection limit of only 5 ppm H2 in air. Thus, functionalized polymer planar Bragg gratings are eminently suitable for H2 leak detection applications.</abstract>
    <parentTitle language="eng">Optics Letters</parentTitle>
    <identifier type="doi">https://doi.org/10.1364/OL.395341</identifier>
    <identifier type="url">https://www.osapublishing.org/ol/abstract.cfm?uri=ol-45-13-3601</identifier>
    <enrichment key="copyright">0</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Jixiang Dai</author>
    <author>Minghong Yang</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg Grating Sensors</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hydrogen Detection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic Olefin Copolymers</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Gassensor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Wasserstoff</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1673</id>
    <completedYear>2020</completedYear>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>4498</pageFirst>
    <pageLast>4498</pageLast>
    <pageNumber>1</pageNumber>
    <edition/>
    <issue>16</issue>
    <volume>45</volume>
    <type>other</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-08-10</completedDate>
    <publishedDate>2020-08-10</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Hypersensitive H2 sensor based on polymer planar Bragg gratings coated with Pt-loaded WO3–SiO2: erratum</title>
    <abstract language="eng">We present an erratum to our Letter [Opt. Lett. 45, 3601 (2020)]. Labeling errors in two ﬁgures and an incorrect&#13;
sentence are revised. The corrections have no inﬂuence on the conclusions of the original Letter.</abstract>
    <abstract language="deu">Erratum</abstract>
    <identifier type="doi">https://doi.org/10.1364/OL.401819</identifier>
    <identifier type="url">https://www.osapublishing.org/ol/abstract.cfm?uri=ol-45-16-4498</identifier>
    <enrichment key="copyright">1</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Jixiang Dai</author>
    <author>Minghong Yang</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg Grating, Hydrogen Detection,  Functionalization</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Gassensor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Wasserstoff</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1891</id>
    <completedYear>2021</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2002203</pageFirst>
    <pageLast>2002203</pageLast>
    <pageNumber/>
    <edition/>
    <issue>13</issue>
    <volume>9</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-04-07</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Tunable Bulk Polymer Planar Bragg Gratings Electrified via Femtosecond Laser Reductive Sintering of CuO Nanoparticles</title>
    <abstract language="eng">This contribution demonstrates and discusses electrically tunable polymer planar Bragg gratings based on bulk cyclic olefin copolymers. A lithographic single-writing-step method and femtosecond laser reductive sintering of copper(II) oxide nanoparticles are subsequently employed in order to generate buried photonic structures and copper conducting paths on top of the polymer substrate. This way, the necessary number of process steps for fabricating a planar polymer-based electro-optical device is greatly reduced. The response of a fully electrified grating structure follows temperature changes, induced by the copper conducting path, with sensitivities up to −31 pm K−1. Dilatometric measurements show that the specimen's behavior is correlated to the situationally reduced thermal expansion of the bulk polymer substrate. In consequence, the tuning response of the photonic platform follows a second order polynomial, whereas a direct current of 30 mA, which correlates to a power consumption of 18.3 mW, leads to a local temperature increase and a residual Bragg wavelength shift of 19.6 K and −547 pm, respectively. Moreover, the outstanding flexibility of the proposed fabrication concept is underlined by demonstrating alternative conducting path geometries, whereas one of the additional designs is adapted to control the spectral width of the Bragg grating's reflection peak.</abstract>
    <parentTitle language="eng">Advanced Optical Materials</parentTitle>
    <identifier type="url">https://onlinelibrary.wiley.com/doi/10.1002/adom.202002203</identifier>
    <identifier type="doi">https://doi.org/10.1002/adom.202002203</identifier>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Stefan Kefer</author>
    <author>Kay Bischoff</author>
    <author>Gian-Luca Roth</author>
    <author>Julian Haubner</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg gratings</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CuO nanoparticles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>cyclic olefin copolymers</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>electro-optic tuning</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>integrated photonics</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
    <file>https://opus4.kobv.de/opus4-h-ab/files/1891/ADOM_OPUS.pdf</file>
  </doc>
  <doc>
    <id>1894</id>
    <completedYear>2021</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2389</pageFirst>
    <pageLast>2400</pageLast>
    <pageNumber/>
    <edition/>
    <issue>8</issue>
    <volume>11</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-07-07</completedDate>
    <publishedDate>2021-07-07</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Micromilling-assisted fabrication of monolithic polymer ridge-type waveguides with integrated photonic sensing structures</title>
    <abstract language="eng">This study demonstrates and discusses a novel approach for the fabrication and rapid prototyping of monolithic photonic platforms comprising a ridge-type waveguide with integrated sensing structures. First, the bulk injection-molded cyclic olefin copolymer substrates are micromilled in order to define the physical extension of the ridge structure. Cross-sections down to 30 × 30 µm2, exhibiting a mean surface roughness of 300 nm, are achieved with this process. Subsequently, UV radiation is used to modify the ridge structure’s refractive index, which leads to the formation of an optical waveguide. By employing a phase mask, it is possible to equip the photonic platform with a Bragg grating suitable for temperature measurements with a sensitivity of −5.1 pm K-1. Furthermore, an integrated Fabry-Pérot cavity, generated during the micromilling step as well, enables refractive index measurements with sensitivities up to 1154 nm RIU-1.</abstract>
    <parentTitle language="eng">Optical Materials Express</parentTitle>
    <identifier type="url">https://www.osapublishing.org/ome/fulltext.cfm?uri=ome-11-8-2389&amp;id=453071</identifier>
    <identifier type="doi">https://doi.org/10.1364/OME.425778</identifier>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Dominik Pape</author>
    <author>Gian-Luca Roth</author>
    <author>Steffen Hessler</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic Olefin Copolymers</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Micromilling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg Grating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fabry-Pérot Etalon</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Optischer Sensor</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1892</id>
    <completedYear>2021</completedYear>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>other</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-07-05</completedDate>
    <publishedDate>2021-07-05</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Tunable Bulk Polymer Planar Bragg Gratings Electrified via Femtosecond Laser Reductive Sintering of CuO Nanoparticles (Advanced Optical Materials 13/2021)</title>
    <abstract language="eng">This cover image outlines the fabrication method of a polymer planar Bragg grating electrified via femtosecond laser reductive sintering of CuO nanoparticles (see article number 2002203 by Stefan Kefer and co-workers). Based on this sophisticated methodology, bulk cyclic olefin copolymer substrates can be equipped with integrated photonic structures comprising a waveguide as well as a Bragg grating. Its reflective characteristics can be efficiently tuned by means of the subsequently generated Cu conducting path, whereas the applied femtosecond laser process enables an almost limitless degree of freedom towards conducting path geometries.</abstract>
    <abstract language="deu">Cover zum zugehörigen Artikel</abstract>
    <identifier type="url">https://onlinelibrary.wiley.com/doi/10.1002/adom.202170048</identifier>
    <identifier type="doi">https://doi.org/10.1002/adom.202170048</identifier>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Kay Bischoff</author>
    <author>Gian-Luca Roth</author>
    <author>Julian Haubner</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Femtosekundenlaser</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>1872</id>
    <completedYear>2021</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>161</pageFirst>
    <pageLast>162</pageLast>
    <pageNumber>334</pageNumber>
    <edition/>
    <issue/>
    <volume/>
    <type>bookpart</type>
    <publisherName>AMA Service GmbH</publisherName>
    <publisherPlace>Wunstorf, Germany</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-06-01</completedDate>
    <publishedDate>2021-06-01</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Monitoring of Composite Bicycle Components using Polymer Planar Bragg Gratings</title>
    <abstract language="eng">This study demonstrates mobile load monitoring of a composite bicycle component using an application-&#13;
customized polymer planar Bragg grating sensor, evaluated by a mobile interrogation unit. After a referencing procedure, the mechanical load of a seat post is monitored while cycling through a test track.</abstract>
    <parentTitle language="eng">SMSI 2021 - Sensors and Instrumentation</parentTitle>
    <identifier type="isbn">978-3-9819376-4-0</identifier>
    <identifier type="url">https://www.ama-science.org/proceedings/details/3992</identifier>
    <identifier type="doi">10.5162/SMSI2021/B9.2</identifier>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Frederick Roth</author>
    <author>Michael Kaloudis</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg Grating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Composites</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic Olefin Copolymers</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Micromilling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Load Monitoring</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Verbundwerkstoff</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Fahrrad</value>
    </subject>
    <collection role="forschungsschwerpunkte" number="">Intelligent Sensors and Signals</collection>
    <collection role="forschungsschwerpunkte" number="">Clean Tech</collection>
    <collection role="forschungsschwerpunkte" number="">Innovative Material Processing</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>2235</id>
    <completedYear>2024</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>168</pageFirst>
    <pageLast>168</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>16</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-01-05</completedDate>
    <publishedDate>2024-01-05</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Birefringence in Injection-Molded Cyclic Olefin Copolymer Substrates and Its Impact on Integrated Photonic Structures</title>
    <abstract language="eng">This contribution quantifies the birefringence within injection-molded cyclic olefin copolymer plates and discusses its impact on the mechanical properties of the plates. It also focuses on the impact of birefringence on integrated waveguides and Bragg gratings and provides fabrication guidelines for such structures. The anisotropy in all three dimensions of the workpiece is examined by means of polarimetry and a prism coupler. It is found that the birefringence is inhomogenously distributed within the workpieces, whereas the maximum birefringence not only varies locally, but also depends on the observation direction. Overall, a maximum birefringence of 10 × 10−4 is found at the plate’s surface near the injection gate. The anisotropy then reduces exponentially towards the center of the workpiece and saturates at 1.8 × 10−4, in a depth of 0.4 mm. Thus, the birefringence strongly affects near-surface photonic structures. It is found that, depending on their orientation and the local birefringence of the substrate, waveguides and Bragg gratings fabricated with comparable parameters behave completely differently in terms of polarization-dependent optical attenuation, cross-sectional intensity distribution and Bragg reflection signal. For example, the support of the TM mode can vary between total loss and an optical attenuation of 0.9 dB × cm−1. In consequence, this study underlines the importance of quantifying the birefringent state of an injection-molded cyclic olefin copolymer workpiece if it is supposed to serve as a substrate for integrated photonic structures. The study furthermore demonstrates that birefringence effects can be omitted by burying the photonic structures deeper into the volume of the thermoplastic.</abstract>
    <parentTitle language="eng">Polymers</parentTitle>
    <identifier type="url">https://www.mdpi.com/2073-4360/16/2/168</identifier>
    <identifier type="doi">10.3390/polym16020168</identifier>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="HAB_Review">ja</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Stefan Kefer</author>
    <author>Tobias Limbach</author>
    <author>Natalie Pape</author>
    <author>Kathrin Klamt</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>cyclic olefin copolymer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>birefringence</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>integrated photonics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg grating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>injection molding</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Wellenleiter</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Doppelbrechung</value>
    </subject>
    <collection role="institutes" number="">Angewandte Lasertechnik und Photonik (alp)</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
    <file>https://opus4.kobv.de/opus4-h-ab/files/2235/Biref_Paper.pdf</file>
  </doc>
  <doc>
    <id>2084</id>
    <completedYear>2023</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2023-03-21</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Towards Pressure Sensors Based on Polymer Planar Bragg Gratings</title>
    <abstract language="eng">While Bragg grating-based optical devices have shown promising performances for pressure sensing applications, their sensitivity, especially in the low-pressure regime, is unsatisfying and needs to be optimized by elaborate designs, such as cantilevers or other extrinsic mechanical transducers. This contribution demonstrates and discusses a novel concept for optical pressure sensors based on polymer planar Bragg gratings. Waveguide and Bragg grating are fabricated underneath the surface of a temperature-stable and humidity-insensitive cyclic olefin copolymer substrate by means of a femtosecond laser. Based on the employed direct-writing procedure, in combination with adaptive, in-situ beam shaping with a spatial light modulator, writing depth, i.e., location of the photonic structures within the substrate, as well as Bragg grating periodicity and positioning can be deliberately chosen. Afterwards, the polymer substrate is post-processed with a high-precision micro mill, so a diaphragm comprising the integrated photonic structures is generated. The resulting diaphragm exhibits a thickness of 300 µm and a diameter of 10 mm. Finally, the optical sensor is packaged and sealed to form an air-filled gas pocket underneath the diaphragm. Deformations of the diaphragm by external pressure changes translate to strain variations along the waveguide axis and thus perturb the Bragg grating period. This leads to changes in the grating’s wavelength of main reflection, which can be evaluated in order to quantify the relative external pressure. With this straightforward optical sensor concept, pressure sensitivities up to 39 pm kPa-1, within relative pressures ranges from  78 kPa to 372 kPa, are achieved.</abstract>
    <parentTitle language="eng">Organic Photonic Materials and Devices XXV</parentTitle>
    <identifier type="isbn">9781510659414</identifier>
    <identifier type="doi">10.1117/12.2648723</identifier>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Natalie Pape</author>
    <author>Nikola Gries</author>
    <author>Gian-Luca Roth</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg grating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>pressure sensor</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>integrated photonics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>cyclic olefin copolymers</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>femtosecond laser</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Drucksensor</value>
    </subject>
    <collection role="institutes" number="">Angewandte Lasertechnik und Photonik (alp)</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>2085</id>
    <completedYear>2021</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-06-15</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">POLYMER PLANAR BRAGG GRATINGS BASED ON BULK CYCLIC OLEFIN COPOLYMERS: FABRICATION AND FUNCTIONALIZATION</title>
    <parentTitle language="eng">Proceedings of Student Conference on Sensors, Systems and Measurement 2021</parentTitle>
    <identifier type="isbn">978-80-01-06822-9</identifier>
    <identifier type="url">https://scssm.fel.cvut.cz/wp-content/uploads/2021/07/Proceedings-SCSSM-2021.pdf</identifier>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <collection role="institutes" number="">Angewandte Lasertechnik und Photonik (alp)</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>2237</id>
    <completedYear>2023</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-02-19</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Sapphire-Based Planar Bragg Grating Devices</title>
    <abstract language="eng">This study reports on the long-term stability and the high-temperature capability of sapphire-based photonic crystal waveguides with integrated Bragg gratings. Furthermore, their Bragg grating reflectivity as well as their temperature sensitivity is quantified.</abstract>
    <parentTitle language="eng">28th International Conference on Optical Fiber Sensors</parentTitle>
    <identifier type="isbn">978-1-957171-30-2</identifier>
    <identifier type="doi">10.1364/OFS.2023.W2.4</identifier>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="HAB_Review">nein</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <licence>Keine Lizenz - es gilt das deutsche Urheberrecht</licence>
    <author>Stefan Kefer</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Wellenleiter</value>
    </subject>
    <collection role="institutes" number="">Angewandte Lasertechnik und Photonik (alp)</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
  </doc>
  <doc>
    <id>2450</id>
    <completedYear>2024</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>6302</pageFirst>
    <pageLast>6311</pageLast>
    <pageNumber>10</pageNumber>
    <edition/>
    <issue>18</issue>
    <volume>42</volume>
    <type>article</type>
    <publisherName>Institute of Electrical and Electronics Engineers (IEEE)</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Lattice-Like Waveguides With Integrated Bragg Gratings in Planar Cyclic Olefin Copolymers</title>
    <abstract language="eng">This contribution demonstrates femtosecond laser direct writing of lattice-like waveguides in planar cyclic oleﬁn copolymer substrates. Based on numerical simulation and experimental near-ﬁeld analysis, stable single-mode waveguiding around wavelengths of 1550 nm is demonstrated. The waveguiding mechanism is based on a hexagonal array of laser-induced, positive refractive index modiﬁcation lines. Thus, the lateral extension of the guided mode can be adapted by varying the fabrication parameters and, in consequence, the resulting cross-sectional arrangement of the refractive index perturbations. With an optical attenuationof 2.2 dB·cm-1 around 1550 nm, the fabricated waveguides are well-suited for on-chip integrated photonic devices. Moreover, the waveguides can also be equipped with Bragg gratings to enable the application of the photonic platform as a sensing device. Dependingon their length, the Bragg grating structures exhibit reﬂectivities ofup to 99% and spectral widths down to 0.3 nm. The ﬂexibility of the fabrication process and the sensing capabilities of the lattice-like waveguides with integrated Bragg gratings are underlined by an exemplary application study demonstrating a relative pressure sensor. For that, a photonic platform is micromilled to generate a 300 µm thick diaphragm and a reference pressure chamber. The strain introduced to the diaphragm by external pressure changes can then be quantiﬁed by the integrated photonic structures.This way, absolute pressure sensitivities of up to 38 pm·kPa-1 can be achieved in a relative pressure range from −60 to 100 kPa. The newly-developed lattice-like waveguides with integrated Bragggratings are therefore well-suited for the realization of novel and adaptable photonic devices and sensors.</abstract>
    <parentTitle language="eng">Journal of Lightwave Technology</parentTitle>
    <identifier type="issn">0733-8724</identifier>
    <identifier type="doi">10.1109/JLT.2023.3328323</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="opus_import_data">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T19:11:14Z","timestamp":1726254674293},"reference-count":49,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","issue":"18","license":[{"start":{"date-parts":[[2024,9,15]],"date-time":"2024-09-15T00:00:00Z","timestamp":1726358400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"funder":[{"DOI":"10.13039\/501100002745","name":"Bayerische Forschungsstiftung","doi-asserted-by":"publisher","award":["AZ-1436-20","AZ-1579-23"],"id":[{"id":"10.13039\/501100002745","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Lightwave Technol."],"published-print":{"date-parts":[[2024,9,15]]},"DOI":"10.1109\/jlt.2023.3328323","type":"journal-article","created":{"date-parts":[[2023,10,30]],"date-time":"2023-10-30T19:14:23Z","timestamp":1698693263000},"page":"6302-6311","source":"Crossref","is-referenced-by-count":0,"title":["Lattice-Like Waveguides With Integrated Bragg Gratings in Planar Cyclic Olefin Copolymers"],"prefix":"10.1109","volume":"42","author":[{"ORCID":"http:\/\/orcid.org\/0000-0001-5344-5618","authenticated-orcid":false,"given":"Stefan","family":"Kefer","sequence":"first","affiliation":[{"name":"Applied Laser and Photonics Group, Aschaffenburg University of Applied Sciences, Aschaffenburg, Germany"}]},{"given":"Natalie","family":"Pape","sequence":"additional","affiliation":[{"name":"Applied Laser and Photonics Group, Aschaffenburg University of Applied Sciences, Aschaffenburg, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0001-5623-228X","authenticated-orcid":false,"given":"Kay","family":"Bischoff","sequence":"additional","affiliation":[{"name":"Applied Laser and Photonics Group, Aschaffenburg University of Applied Sciences, Aschaffenburg, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-6615-370X","authenticated-orcid":false,"given":"Bernhard","family":"Schmauss","sequence":"additional","affiliation":[{"name":"Institute of Microwaves and Photonics, University of Erlangen-Nuremberg, Erlangen, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0001-5592-3388","authenticated-orcid":false,"given":"Ralf","family":"Hellmann","sequence":"additional","affiliation":[{"name":"Applied Laser and Photonics Group, Aschaffenburg University of Applied Sciences, Aschaffenburg, Germany"}]}],"member":"263","reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1109\/2944.826873"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1021\/acsphotonics.0c00983"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1016\/j.optmat.2021.111011"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1002\/1521-4095(20021002)14:19&lt;1339::aid-adma1339&gt;3.0.co;2-o"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.3390\/coatings13030549"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrysgro.2005.12.017"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1038\/s42254-021-00398-z"},{"volume-title":"POF Handbook: Optical Short Range Transmission Systems","year":"2008","author":"Ziemann","key":"ref8"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1117\/1.1369411"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2018.2885957"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1364\/OL.43.003321"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1364\/ol.395341"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1088\/2040-8986\/aa9bcf"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1109\/LPT.2017.2693401"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1016\/j.sna.2014.10.040"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.3390\/s20195452"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1002\/adom.202002203"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1016\/j.snb.2016.08.113"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1016\/j.optlaseng.2020.106362"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1364\/OME.6.002118"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.1364\/OE.20.027288"},{"key":"ref22","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-23366-1"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1364\/OE.388364"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.1038\/srep05988"},{"key":"ref25","doi-asserted-by":"publisher","DOI":"10.1002\/lpor.201300025"},{"key":"ref26","doi-asserted-by":"publisher","DOI":"10.3390\/photonics9040234"},{"key":"ref27","doi-asserted-by":"publisher","DOI":"10.1002\/lpor.202100215"},{"key":"ref28","doi-asserted-by":"publisher","DOI":"10.1364\/OL.41.002169"},{"key":"ref29","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.2016.2573841"},{"key":"ref30","doi-asserted-by":"publisher","DOI":"10.1364\/ome.7.001942"},{"key":"ref31","doi-asserted-by":"publisher","DOI":"10.3788\/col202220.031406"},{"key":"ref32","doi-asserted-by":"publisher","DOI":"10.1016\/j.optmat.2017.10.029"},{"volume-title":"Photonic Solutions Beamprop BPM v2023.03 User Guide","year":"2023","key":"ref33"},{"key":"ref34","doi-asserted-by":"publisher","DOI":"10.1364\/ao.41.001374"},{"key":"ref35","doi-asserted-by":"publisher","DOI":"10.1364\/oe.384948"},{"key":"ref36","doi-asserted-by":"publisher","DOI":"10.1364\/ome.425778"},{"key":"ref37","doi-asserted-by":"publisher","DOI":"10.6028\/nbs.sp.637v2"},{"key":"ref39","doi-asserted-by":"publisher","DOI":"10.1364\/ol.44.000037"},{"volume-title":"Fiber Bragg Gratings","year":"2010","author":"Kashyap","key":"ref40"},{"volume-title":"Fiber Bragg gratings: Fundamentals and Applications in Telecommunications and Sensing","year":"1999","author":"Othonos","key":"ref41"},{"key":"ref42","doi-asserted-by":"publisher","DOI":"10.1109\/50.822797"},{"key":"ref43","doi-asserted-by":"publisher","DOI":"10.1016\/j.optcom.2004.11.078"},{"key":"ref44","doi-asserted-by":"publisher","DOI":"10.1016\/j.optlastec.2019.105841"},{"key":"ref45","doi-asserted-by":"publisher","DOI":"10.1117\/1.oe.62.1.010902"},{"volume-title":"Theory of Plates and Shells","year":"1959","author":"Timoshenko","key":"ref46"},{"key":"ref47","first-page":"65","article-title":"Towards pressure sensors based on polymer planar Bragg gratings","volume":"12418","author":"Kefer","journal-title":"Proc. SPIE"},{"key":"ref48","doi-asserted-by":"publisher","DOI":"10.1109\/jsen.2008.2011949"},{"key":"ref49","doi-asserted-by":"publisher","DOI":"10.1016\/j.sna.2011.03.030"},{"key":"ref50","doi-asserted-by":"publisher","DOI":"10.1088\/0957-0233\/26\/11\/112001"}],"container-title":["Journal of Lightwave Technology"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx7\/50\/10679358\/10301638.pdf?arnumber=10301638","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T18:23:44Z","timestamp":1726251824000},"score":1,"resource":{"primary":{"URL":"https:\/\/ieeexplore.ieee.org\/document\/10301638\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,9,15]]},"references-count":49,"journal-issue":{"issue":"18"},"URL":"https:\/\/doi.org\/10.1109\/jlt.2023.3328323","relation":{},"ISSN":["0733-8724","1558-2213"],"issn-type":[{"type":"print","value":"0733-8724"},{"type":"electronic","value":"1558-2213"}],"subject":[],"published":{"date-parts":[[2024,9,15]]}}}</enrichment>
    <enrichment key="local_crossrefDocumentType">journal-article</enrichment>
    <enrichment key="local_crossrefLicence">https://creativecommons.org/licenses/by/4.0/legalcode</enrichment>
    <enrichment key="local_import_origin">crossref</enrichment>
    <enrichment key="local_doiImportPopulated">PersonAuthorFirstName_1,PersonAuthorLastName_1,PersonAuthorIdentifierOrcid_1,PersonAuthorFirstName_2,PersonAuthorLastName_2,PersonAuthorFirstName_3,PersonAuthorLastName_3,PersonAuthorIdentifierOrcid_3,PersonAuthorFirstName_4,PersonAuthorLastName_4,PersonAuthorIdentifierOrcid_4,PersonAuthorFirstName_5,PersonAuthorLastName_5,PersonAuthorIdentifierOrcid_5,PublisherName,TitleMain_1,TitleParent_1,PageNumber,PageFirst,PageLast,Issue,Volume,CompletedYear,IdentifierIssn,Enrichmentlocal_crossrefLicence</enrichment>
    <enrichment key="HAB_Review">ja</enrichment>
    <enrichment key="opus.source">doi-import</enrichment>
    <enrichment key="copyright">1</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <author>Stefan Kefer</author>
    <author>Natalie Pape</author>
    <author>Kay Bischoff</author>
    <author>Bernhard Schmauss</author>
    <author>Ralf Hellmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bragg grating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>cyclic olefin copolymers</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>femtosecond laser</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>integrated photonics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>lattice-like waveguide</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>pressure sensor</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Wellenleiter</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bragg-Reflektor</value>
    </subject>
    <collection role="institutes" number="">Angewandte Lasertechnik und Photonik (alp)</collection>
    <collection role="forschungsschwerpunkte" number="">Material Testing &amp; Sensor Technology</collection>
    <file>https://opus4.kobv.de/opus4-h-ab/files/2450/Kefer2024_LLWG.pdf</file>
  </doc>
</export-example>
