TY - CONF A1 - Lu, Xin A1 - Schukar, Marcus A1 - Weege, S. A1 - Roske, T. A1 - Krebber, Katerina T1 - Leakage detection at a borehole simulator using distributed acoustic sensing N2 - A distributed acoustic sensing system is used to detect the leakage in a borehole simulator by measuring the leakage induced vibration. The leakage location can be clearly determined by frequency spectrum analysis. T2 - 27th International Conference on Optical Fiber Sensors (OFS-27) CY - Alexandria, VA, USA DA - 29.08.2022 KW - Structural health monitoring KW - Distributed fiber sensing KW - Distributed acoustic sensing KW - Leakage detection PY - 2022 AN - OPUS4-56098 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Popiela, Bartosz A1 - Günzel, Stephan A1 - Schukar, Marcus A1 - Mair, Georg W. A1 - Krebber, Katerina A1 - Seidlitz, Holger T1 - Impact of internal pressure control during manufacturing on residual stresses and safety performance of type 4 pressure vessels N2 - Composite pressure vessels are commonly manufactured using the wet filament winding process, where various process parameters can influence the performance of the finished component. In this study two designs of wet filament wound 6.8-liter type 4 composite pressure vessels were manufactured. Both differ only by the internal pressure used during the filament winding, which primarily influences the residual stress state in the composite structure. An extensive experimental study was carried out, including 10 slow burst tests and strain measurements with fiber optic sensors. Significant differences can be observed in the performance of the two designs even though the used stacking sequence, materials and other manufacturing parameters are the same for both designs. A discussion of the differences in the behavior of both cylinder types is provided, including the strain distribution in slow burst tests and failure mechanism. KW - Residual stresses KW - Slow burst tests KW - Filament winding KW - Type 4 composite pressure vessels KW - Hydrogen PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-626663 DO - https://doi.org/10.1016/j.jcomc.2025.100581 SN - 2666-6820 VL - 17 SP - 1 EP - 9 PB - Elsevier B.V. CY - Amsterdam, Netherlands AN - OPUS4-62666 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wendt, Mario A1 - Krebber, Katerina A1 - Glötzl, R. ED - Boller, C. T1 - Development of a PMMA-POF based fiber optic inclinometer with smart transport and installation characteristics N2 - We present the state of our work concerning the development of a fiber optic inclinometer based on PMMA POF which provides distributed sensitivity regarding level, direction and location of deformation within critical ground structures. According to the demand for simple less expensive Installation and Operation of reliable sensor Systems a sensor concept has been developed and to our knowledge the first results of a PMMA POF based inclinometer prototype are presented in the following chapters. T2 - EWSHM'12 - 6th European workshop on structural health monitoring 2012 CY - Dresden, Germany DA - 03.07.2012 PY - 2012 SN - 978-3-940283-41-2 IS - Chapt. Optical Sensors SP - 411 EP - 416 CY - Berlin AN - OPUS4-26193 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wendt, Mario A1 - Krebber, Katerina T1 - Using optical POF switches for distributed fiber optical strain measurements N2 - During recent research projects FOS sensor Systems based on PMMA (see fig.l) and perfluorined POF have been developed in order to observe critical earth structures [1,2], The sensor Systems enables real distributed Observation of objects due to the use of OTDR technique, whereas an increased Rayleigh backscatter level is observed at the strained fiber section. Fürther both used POF types are very robust which makes the sensor System suitable for harsh environment condilions and secure continuous measurements even within strong deformed structures. These characteristics offer opportunities to complement the arsenal of established electric based sensor Systems. However, due to high cost of OTDR devices the developed sensor System is not ready for the market yet. To make an improvement here the feasibility of optical switches have been investigated in order to use multiple single sensor lines connected to one OTDR device. Despite to the fact that optical switches are established in the field of telecommunication the use for distributed optical measurements is to our knowledge not investigated yet. One question which has to be answered is if strong reflections which occur at fiber couplings disable the Signals of the single sensor lines. A further interest is to secure that the known sensing characteristics of the single System is still provided via optical switch. For this purpose two optical switches each adapted to PMMA and perfluorined characteristics respectively have been tested. Laboratory tests have been conducted, whereas two OTDR units for PMMA and perfluorined POF were available. Finally the switches have been tested during field tests. T2 - POF 2012 - 21st International conference on plastic optical fibers CY - Atlanta, Georgia, USA DA - 10.09.2012 KW - Distributed strain sensors KW - Optical switch KW - OTDR PY - 2012 SP - 133 EP - 136 AN - OPUS4-26743 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Popiela, Bartosz A1 - Schukar, Marcus A1 - Breithaupt, Mathias A1 - Günzel, Stephan A1 - Mair, Georg W. A1 - Krebber, Katerina A1 - Seidlitz, Holger T1 - Embedding of Fiber Optic Sensors Under Industrial Conditions and Distributed Strain Sensing in Type 4 Composite Pressure Vessels N2 - The number of in-operation composite pressure vessels is increasing, partly due to their attractiveness for on-board compressed gas storage and transport applications. A possible way to maintain the highest safety levels is through the structural health monitoring of the composite cylinders. Here, the use of fiber optic sensors appears to be a promising approach. However, the integration of the optical fibers into the composite structure of a pressure vessel has been shown to be challenging. In this study, insights on the embedding of optical fibers in the composite structure under industrial conditions are provided. A protection concept for the ingress and egress of the optical fibers is presented. Finally, the results from destructive slow burst tests are evaluated, showing no clear trend in the impact of the embedded optical fibers on the performance of composite pressure vessels. T2 - 24th International Conference on Composite Materials CY - Baltimore, Maryland, USA DA - 04.08.2025 KW - Composite KW - Pressure vessel KW - Filament winding KW - Fiber optic sensors PY - 2025 SP - 3710 EP - 3717 AN - OPUS4-63886 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Witt, Jens A1 - Narbonneau, F. A1 - Schukar, Marcus A1 - Krebber, Katerina A1 - De Jonckheere, J. A1 - Jeanne, M. A1 - Kinet, D. A1 - Paquet, B. A1 - Depré, A. A1 - D´Angelo, L.T. A1 - Thiel, T. A1 - Logier, R. T1 - Medical textiles with embedded fiber optic sensors for monitoring of respiratory movement N2 - For patients under Magnetic Resonance Imaging (MRI) spontaneous respiration is constantly at risk of being impaired by anesthetic drugs or by upper airway obstruction. Therefore, continuous monitoring of the breathing activity is needed to assess adequate ventilation or to detect specific obstruction patterns. The paper describes three MRI compatible respiration sensors based on pure optical technologies developed within the EU FP6 project OFSETH. The sensors are based on fiber Bragg gratings, optical time-domain reflectometry and macrobending effects. The developed smart medical textiles can sense elongation up to 3% while maintaining the stretching properties of the textile substrates for patient's comfort. The OFSETH harness allows a continuous measurement of abdominal and thoracic respiration movement while all vitals organs are free for medical staff actions. The sensors were tested in MRI environment and on healthy adults. KW - Fiber optic sensor KW - Polymer optical fiber (POF) sensor KW - Respiratory sensor KW - Smart medical textile KW - MRI KW - Smart textile KW - Healthcare monitoring KW - Optical sensor KW - FBG PY - 2012 DO - https://doi.org/10.1109/JSEN.2011.2158416 SN - 1530-437X SN - 1558-1748 VL - 12 IS - 1 SP - 246 EP - 254 CY - New York, NY, USA AN - OPUS4-25649 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens A1 - Schukar, Marcus A1 - Krebber, Katerina A1 - Demuth, J. A1 - Pazoutová, H. A1 - Sasek, L. A1 - Santostefano, N. A1 - Fiore, L. A1 - Uotila, J. A1 - Pietrowski, P. T1 - POF sensors for personal protective equipment (PPE) N2 - This paper reports about the EU project i-Protect in which fibre optic sensors for measuring heart rate, respiratory rate and skin temperature are being developed. The sensors and monitoring units are integrated into underwear and are communicating wireless via body area network and communication unit with the rescue command centre. All sensors can be removed from the underwear to allow washing the textile. T2 - POF 2012 - 21st International conference on plastic optical fibers CY - Atlanta, Georgia, USA DA - 10.09.2012 KW - Physiological sensor KW - Heart rate KW - Respiratory rate KW - Photoplethysmography KW - Technical textile PY - 2012 SP - 333 EP - 338 AN - OPUS4-27397 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hussels, Maria-Teresa A1 - Chruscicki, Sebastian A1 - Habib, Abdel Karim A1 - Krebber, Katerina T1 - Distributed acoustic fibre-optic sensors for condition monitoring of pipelines N2 - Industrial piping systems are particularly relevant to public safety and the continuous availability of infrastructure. However, condition monitoring systems based on many discrete sensors are generally not well-suited for widespread piping systems due to considerable installation effort, while use of distributed fibre-optic sensors would reduce this effort to a minimum. Specifically distributed acoustic sensing (DAS) is employed for detection of third-party threats and leaks in oil and gas pipelines in recent years and can in principle also be applied to industrial plants. Further possible detection routes amenable by DAS that could identify damage prior to emission of medium are subject of a current project at BAM, which aims at qualifying distributed fibre optic methods such as DAS as a means for spatially continuous monitoring of industrial piping systems. Here, first tests on a short pipe are presented, where optical fibres were applied directly to the surface. An artificial signal was used to define suitable parameters of the measurement system and compare different ways of applying the sensor. T2 - Sixth European Workshop on Optical Fibre Sensors CY - Limerick, Ireland DA - 31.05.2016 KW - fibre-optic condition monitoring KW - distributed acoustic sensing (DAS) KW - pipeline monitoring KW - sensor application PY - 2016 SN - 978-1-5106-0219-9 DO - https://doi.org/10.1117/12.2236809 SN - 0277-786X VL - Vol. 9916 SP - Article Number: 99162Y PB - SPIE CY - Bellingham, Washington USA AN - OPUS4-37234 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Stajanca, Pavol A1 - Cetinkaya, O. A1 - Schukar, Marcus A1 - Mergo, P. A1 - Webb, D. J. A1 - Krebber, Katerina T1 - Molecular alignment relaxation in polymer optical fibers for sensing applications N2 - A systematic study of annealing behavior of drawn PMMA fibers was performed. Annealing Dynamics were investigated under different environmental conditions by fiber longitudinal shrinkage monitoring. The shrinkage process was found to follow a stretched exponential decay function revealing the heterogeneous nature of the underlying molecular dynamics. The complex dependence of the fiber shrinkage on initial degree of molecular alignment in the fiber, annealing time and temperature was investigated and interpreted. Moreover, humidity was shown to have a profound effect on the annealing process, which was not recognized previously. Annealing was also shown to have considerable effect on the fiber mechanical properties associated with the relaxation of molecular alignment in the fiber. The consequences of fiber annealing for the climatic stability of certain polymer optical fiber-based sensors are discussed, emphasizing the importance of fiber controlled pre-annealing with respect to the foreseeable operating conditions. KW - Polymer optical fibers KW - Optical fiber sensor climatic stability KW - Thermal annealing KW - Molecular alignment relaxation KW - Humidity induced annealing PY - 2016 DO - https://doi.org/10.1016/j.yofte.2015.12.006 SN - 1068-5200 VL - 28 SP - 11 EP - 17 PB - Academic Press CY - Orlando AN - OPUS4-35288 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stajanca, Pavol A1 - Sporea, D. A1 - Mihai, L. A1 - Negut, D. A1 - Schukar, Marcus A1 - Krebber, Katerina ED - Bunge, C.-A. ED - Kruglov, R. T1 - Gamma radiation induced effects in perfluorinated polymer optical fibers for sensing applications N2 - Radiation induced attenuation in perfluorinated polymer optical fiber was investigated as a potential mean for online. in situ gamma radiation monitoring. Spectral dependence of radiation induced attenuation was measured in the visible and near infrared range. Attenuation spectrum exhibits sharp increase both towards the ultraviolet and infrared side of the spectrum with 3 distinct peaks around 1400 nm. The fiber sensitivity to gamma radiation was further evaluated at two commonly used IR wavelengths (1310nm and l550nm} by pre- and post-irradiation optical time-domain reflectometry measurements. The examined fiber is sensitive up to lOO kGy of total absorbed dose with only minor saturation towards the large dose values. The influence of gamma radiation on the fiber mechanical properties was studied as well. Up to the maximal dose of 100 kGy, no significant deterioration of fiber strength and elasticity was observed. T2 - 3rd International POF Modelling Workshop CY - Nuremberg, Germany DA - 21.09.2015 KW - Perfluorinated POF KW - Gamma radiation KW - Radiation induced losses KW - Radiation dosimetry PY - 2015 SN - 978-3739214993 SP - 95 EP - 103 PB - Books on Demand GmbH CY - Norderstedt AN - OPUS4-35287 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stajanca, Pavol A1 - Lacraz, A. A1 - Kalli, K. A1 - Schukar, Marcus A1 - Krebber, Katerina ED - Berghmans, F. ED - Mignani, A. G. T1 - Strain sensing with femtosecond inscribed FBGs in perfluorinated polymer optical fibers N2 - In this work, the potential of fiber Bragg gratings (FBGs) in low-loss perfluorinated polymer optical fibers (PF-POFs) is explored. The FBG is femtosecond-inscribed in a commercial multi-mode (MM) PF-POF based on Cytop® polymer. Femtosecond inscription leads to creation of a highly saturated grating with a number of higher order reflection Peaks visible throughout the visible and near-infrared spectral region. For 2 mm long FBG having a pitch of 2.2895 μm, a total of nine higher-order MM reflection bands are visible spanning from 1548 nm (4th order) to 520 nm (12th order). Strain sensitivity was measured for 6 peak bands in 500-900 nm region, where relatively low cost CCD based spectrometers and broadband LEDs are available. Strain sensitivity increases almost linearly with increasing initial peak wavelength, growing from 4.82 ± 0.02 nm/% measured for 12th order peak at 517 nm to 8.12 ± 0.04 nm/% measured for 7th order peak at 883 nm. These values correspond to roughly 20 % higher sensitivity than silica FBGs exhibit in this spectral range. The gratings in PF-POFs combine the higher strain sensitivity and low-loss operation while maintaining the mechanical advantages of polymer optical fibers. Therefore, they hold a high potential for considerable broadening of polymer optical fiber Bragg gratings application range. T2 - Photonics Europe 2016, Optical Sensing and Detection IV CY - Brussels, Belgium DA - 03.04.2016 KW - Fiber Bragg gratings KW - Fiber optics sensors KW - Perfluorinated polymer optical fiber KW - Cytop KW - Strain sensitivity PY - 2016 SN - 978-1-5106-0144-4 DO - https://doi.org/10.1117/12.2225081 SN - 0277-786X VL - 9899 SP - 989911-1 EP - 989911-7 PB - SPIE AN - OPUS4-35926 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Lu, Xin A1 - Chruscicki, Sebastian A1 - Schukar, Marcus A1 - Münzenberger, Sven A1 - Krebber, Katerina T1 - Application of Intensity-Based Coherent Optical Time Domain Reflectometry to Bridge Monitoring N2 - Although distributed fiber sensing techniques have been widely used in structural health monitoring, the measurement results of bridge monitoring, particularly under destructive testing, have rarely been reported. To the best of our knowledge, this paper is the first report of distributed vibration measurement results, which we obtained during a three-day destructive test on an abolished bridge. A coherent optical time domain reflectometry (COTDR) was used to acquire the vibration information while the bridge was being sawed. The obtained signal was analyzed in time and frequency domain. Some characteristics of the sawing-induced vibration were retrieved by the short-time Fourier transform; the vibration exhibited several high frequency components within the measured range up to 20 kHz and all the components appeared in the same time slot. Some unexpected signals were also detected. Thorough analysis showed that they are quite different from the sawing-induced vibration and are believed to originate from internal damage to the bridge (probably the occurrence of cracks). KW - Destructive testing KW - Structural health monitoring KW - Distributed fiber sensing KW - Distributed acoustic sensing PY - 2022 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-547451 DO - https://doi.org/10.3390/s22093434 VL - 22 IS - 9 SP - 3434 PB - MDPI AN - OPUS4-54745 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Kinet, D. A1 - Witt, Jens A1 - Grillet, A. A1 - Schukar, Marcus A1 - Krebber, Katerina A1 - Giannone, D. A1 - Pirotte, F. T1 - Silica Fibre Bragg Grating Sensor Embedded into a Textile Fabric for Large Strain Applications N2 - A FBG written on standard silica fibre, with coating transparent at 248nm, was integrated on an elastic textile fabric. The so-formed optical gauge showed a linear relationship when strained up to 40%. T2 - Bragg Gratings, Photosensitivity and Poling in Glass Waveguides (BGPP) and Nonlinear Photonics (NP) Topical Meeting and Tabletop Exhibit 2007 CY - Quebec City, Quebec, Canada DA - 2007-09-02 KW - Silica Fibre KW - Fibre Bragg Grating KW - Fibre Optic Sensor KW - Strain Sensor KW - FBG KW - Textile Fabric KW - Large Strain Application PY - 2007 SN - 1-55752-847-0 SP - 1 EP - 3 AN - OPUS4-16008 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Schukar, Marcus A1 - Krebber, Katerina A1 - Scheer, M. ED - Gerald Gerlach, ED - Peter Hauptmann, T1 - Faser-Bragg-Gitter-Sensoren überwachen Strahlung am Elektronenspeicherring BESSY II T2 - 8. Dresdner Sensor-Symposium CY - Dresden, Deutschland DA - 2007-12-10 KW - Faser-Bragg-Gitter KW - Fasersensoren KW - Strahlungssensoren KW - Strahlungseffekte KW - Strahlungsdosimetrie KW - Elektronenspeicherring PY - 2007 SN - 978-3-940046-45-1 N1 - Serientitel: Dresdner Beiträge zur Sensorik – Series title: Dresdner Beiträge zur Sensorik IS - 29 SP - 141 EP - 144 PB - TUDpress, Verlag der Wissenschaften GmbH CY - Dresden AN - OPUS4-16375 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Grillet, A. A1 - Kinet, D. A1 - Witt, Jens A1 - Schukar, Marcus A1 - Krebber, Katerina A1 - Pirotte, F. A1 - Depré, A. T1 - Optical Fiber Sensors Embedded Into Medical Textiles for Healthcare Monitoring N2 - The potential impact of optical fiber sensors embedded into medical textiles for the monitoring of respiratory movements in a magnetic resonance imaging environment is presented. We report on three different designs, all textile based: a macrobending sensor, a Bragg grating sensor, and a time reflectometry sensor. In all three cases, the sensing principle is based on the measure of the elongation of the abdominal circumference during breathing movements. We demonstrate that the three sensors can successfully sense textile elongations between 0% and 3%, while maintaining the stretching properties of the textile substrates for a good comfort of the patients. KW - Fiber Bragg grating KW - Fiber-optic sensor KW - Mac-robending sensor KW - Medical textile KW - Medical resonance imaging (MRI) KW - Polymer fiber (POF) optical time domain reflectometry (OTDR) sensor PY - 2008 DO - https://doi.org/10.1109/JSEN.2008.926518 SN - 1530-437X SN - 1558-1748 VL - 8 IS - 7 SP - 1215 EP - 1222 CY - New York, NY, USA AN - OPUS4-17799 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Schukar, Marcus A1 - Krebber, Katerina A1 - Scheer, M. T1 - Strahlungsüberwachung mit Faser-Bragg-Gitter-Sensoren am Elektronenspeicherring BESSY II N2 - Die Eignung von Faser-Bragg-Gitter-(FBG)-Sensoren zur Messung ionisierender Strahlung wurde an einem Undulator des Elektronenspeicherrings BESSY II untersucht. Über einen Zeitraum von 20 Wochen wurde eine durch Strahlung verursachte Bragg-Wellenlängenänderung der FBG-Sensoren von 25pm gemessen, was einer Strahlendosis von 720 Gy entspricht. The suitability of using fiber Bragg grating (FBG) sensors for the measurement of ionizing radiation on the electron storage ring BESSY II by measuring the Bragg wavelength shift caused by radiation was investigated. During a time period of 20 weeks a Bragg wavelength shift of 25pm caused by the ionizing radiation was measured by FBG sensors at the storage ring. This Bragg wavelength shift corresponds to a radiation dose value of 720 Gy. KW - Faseroptische Sensoren KW - Faser-Bragg-Gitter KW - Dosimetrie KW - Strahlungssensoren KW - Elektronenspeicherring KW - Fiber optic sensors KW - Fiber Bragg gratings KW - Radiation dosimetry KW - Radiation sensors KW - Electron storage ring PY - 2008 DO - https://doi.org/10.1524/teme.2008.0834 SN - 0340-837X SN - 0178-2312 SN - 0171-8096 VL - 75 IS - 4 SP - 245 EP - 250 PB - Oldenbourg CY - München AN - OPUS4-17655 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krebber, Katerina A1 - Lenke, Philipp A1 - Liehr, Sascha A1 - Witt, Jens A1 - Schukar, Marcus A1 - Large, M. A1 - Thiel, T. T1 - Technology and Applications of Smart Technical Textiles Based on POF T2 - 17th International Conference on Plastic Optical Fibers (POF 2008), August 25-28, 2008 CY - Santa Clara, California, USA DA - 2008-08-25 KW - Fiber optic sensors KW - Polymer optical fibers (POF) KW - POF sensors KW - Smart technical textiles PY - 2008 SP - 1 EP - 10 AN - OPUS4-17870 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Witt, Jens A1 - Schukar, Marcus A1 - Krebber, Katerina T1 - Polymeroptische Fasersensoren für die Atmungssensorik T2 - 19th International Scientific Conference Mittweida CY - Mittweida, Deutschland DA - 2008-11-05 KW - Faseroptischer Sensor KW - Medizinische Textilien KW - Intelligente Textilien KW - Atmungssensor KW - OTDR KW - POF KW - Mikrostrukturierte POF (mPOF) KW - Langperiodische Gitter (LPG) PY - 2008 SN - 1437-7624 SN - 1430-3698 IS - 5 SP - 21 EP - 25 CY - Mittweida AN - OPUS4-18404 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Witt, Jens A1 - Schukar, Marcus A1 - Krebber, Katerina T1 - Medizinische Textilien mit integrierten polymeroptischen Fasern zur Atmungssensorik KW - Atmungssensor KW - Intelligente Textilien KW - Faseroptischer Sensor KW - POF-Sensor KW - OTDR KW - Respiration sensor KW - Intelligent textile KW - Fiberoptic sensor KW - POF sensor KW - OTDR PY - 2008 DO - https://doi.org/10.1524/teme.2008.0905 SN - 0340-837X SN - 0178-2312 SN - 0171-8096 VL - 75 IS - 12 SP - 1 EP - 8 PB - Oldenbourg CY - München AN - OPUS4-18587 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steffen, Milan A1 - Schukar, Marcus A1 - Witt, Jens A1 - Krebber, Katerina A1 - Large, M. A1 - Argyros, A. T1 - Investigation of MPOF-LPGs for sensing applications N2 - The versatility of MPOF offers a variety of sensing applications. In this paper the influence of strain, temperature and humidity is investigated. The results show that MPOF LPGs are well suited for strain sensing. Further investigations have to be made to clarify the behaviour on temperature and humidity in more detail. T2 - POF 2009 - 18th International conference on plastic optical fibers CY - Sydney, Australia DA - 2009-09-07 KW - Mikrostrukturierte Polymerfasern (MPOF) KW - Langperiodische Gitter (LPG) KW - Faseroptische Sensorik KW - Dehnungssensor KW - Klimatische Effekte PY - 2009 IS - Session 1 (S1_25) SP - 1 EP - 4 CY - Sydney, Australia AN - OPUS4-19887 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens A1 - Schukar, Marcus A1 - Krebber, Katerina A1 - Jonckheere, J. de A1 - Paquet, B. A1 - Depré, A. T1 - Respiratory sensor based on POF OTDR N2 - We report on the characterization and test of a respiratory sensor based on POF OTDR, developed for monitoring of patients during MRI examination. The sensor is based on an optical fibre integrated into an elastic belt using a macrobending layout. T2 - POF 2009 - 18th International conference on plastic optical fibers CY - Sydney, Australia DA - 2009-09-07 KW - Faseroptischer Sensor KW - Medizinische Textilien KW - Intelligente Textilien KW - Atmungssensor KW - OTDR KW - POF PY - 2009 IS - Session 6 ( S6_74) SP - 1 EP - 4 CY - Sydney, Australia AN - OPUS4-19889 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schukar, Marcus A1 - Krebber, Katerina A1 - Large, M. A1 - Lwin, R. T1 - Climatic investigations of microstructured polymer optical fibers N2 - The behaviour of optical transmission of microstructured polymer optical fibers (MPOFs) by varying temperature and humidity was investigated whereas different MPOFs with varying hole structures and manufacturing procedures were used. T2 - POF 2009 - 18th International conference on plastic optical fibers CY - Sydney, Australia DA - 2009-09-07 KW - Mikrostrukturierte Polymerfasern (MPOF) KW - Klimatische Effekte KW - Faseroptische Sensorik KW - Langperiodische Gitter (LPG) PY - 2009 IS - Session 1 (S1_25) SP - 1 EP - 4 CY - Sydney, Australia AN - OPUS4-19916 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens A1 - Steffen, Milan A1 - Schukar, Marcus A1 - Krebber, Katerina T1 - Investigation of sensing properties of microstructured polymer optical fibres N2 - We investigated sensing properties of single mode poly methyl methacrylate (PMMA) microstructured polymer optical fibres (MPOF) with mechanically imprinted long period gratings (LPG). After preparation of the MPOF end-faces the samples were elongated with silica fibres. These samples were used to measure the influence of strain to the LPG wavelength which showed the viscoelastic nature of PMMA. We also measured the influence of temperature and humidity. The results show that MPOF LPGs are well suited for strain sensing. One MPOF LPG was stitched to a textile. Using this textile we measured a simulated respiratory motion. T2 - Photonics Europe 2010: Nanophotonics and photonics materials CY - Brussels, Belgium DA - 2010-04-12 KW - Microstructured polymer optical fibre KW - Long period grating KW - Strain sensor KW - Humidity sensor KW - Temperature sensor KW - Respiratory sensor PY - 2010 SN - 978-0-8194-8206-8 DO - https://doi.org/10.1117/12.854656 SN - 0277-786X VL - 7714 IS - 7714-12 SP - 77140F-1 - 77140F-12 AN - OPUS4-21740 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krebber, Katerina A1 - Lenke, Philipp A1 - Liehr, Sascha A1 - Nöther, Nils A1 - Schukar, Marcus A1 - Wendt, Mario A1 - Witt, Jens A1 - Wosniok, Aleksander T1 - Technology and applications of smart technical textiles based on fibre optic sensors N2 - Technical textiles with embedded fibre optic sensors habe been developed for the purposes of the structural health monitoring in geotechnical and civil engineering as well as for healthcare monitoring in the medical sector. The paper shows selected examples of using such sensor-based smart textiles for different applications. T2 - International conference "Optical sensors" CY - Karlsruhe, Germany DA - 2010-06-21 PY - 2010 IS - STuC2.pdf SP - 1 EP - 2(?) AN - OPUS4-21567 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krebber, Katerina T1 - Technology and Applications of Smart Technical Textiles Based on Fibre Optic Sensors T2 - OSA International Conference "Optical Sensors" CY - Karlsruhe, Germany DA - 2010-06-21 PY - 2010 AN - OPUS4-22074 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krebber, Katerina A1 - Grillet, A. A1 - Witt, Jens A1 - Schukar, Marcus A1 - Kinet, D. A1 - Thiel, T. A1 - Pirotte, F. A1 - Depré, A. T1 - Optical fibre sensors embedded into technical textile for healthcare (ofseth) T2 - 16th International Conference on Plastic Optical Fibers (POF 2007) CY - Turin, Italy DA - 2007-09-10 PY - 2007 SP - 227 EP - 233 PB - International Cooperative of Plastic Optical Fibers (ICPOF) CY - Turin, Italy AN - OPUS4-15824 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -