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Integration of Bragg gratings in aerosol-jetted polymer optical waveguides for strain monitoring capabilities

  • We demonstrate and discuss the integration of Bragg gratings in aerosol-jetted polymer optical waveguides, produced in the optical assembly and connection technology for component-integrated bus systems (OPTAVER) process. By using a femtosecond laser and adaptive beam shaping, an elliptical focal voxel generates different types of single pulse modification by nonlinear absorption in the waveguide material, which are arranged periodically to form Bragg gratings. Integration of a single grating structure or, alternatively, an array of Bragg grating structures in the multimode waveguide yields a pronounced reflection signal with typical multimodal properties, i.e., a number of reflection peaks with non-Gaussian shapes. However, the main wavelength of reflection, located around 1555 nm, is evaluable by means of an appropriate smoothing algorithm. When loaded by mechanical bending, a pronounced Bragg wavelength shift of this reflected peak up to 160 pm is detected. This demonstrates that the additively manufactured waveguides can be used not only for signal transmission but also as a sensor.
Metadaten
Author:Kay BischoffORCiD, Stefan KeferORCiD, Alexander Wienke, Ludger Overmeyer, Stefan Kaierle, Cemal Esen, Ralf HellmannORCiD
DOI:https://doi.org/https://doi.org/10.1364/OL.481801
Parent Title (English):Optics Letters
Document Type:Article
Language:German
Year of Completion:2023
Release Date:2024/02/27
GND Keyword:Bragg-Reflektor; Lichtwellenleiter
Volume:48
Issue:7
First Page:1778
Last Page:1781
Urheberrecht:0
Institutes:Fakultät Ingenieurwissenschaften / Labore / Angewandte Lasertechnik und Photonik (alp)
research focus :Materials / Innovative Material Processing
Reviewed:ja
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
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