Improved response time of laser etched polymer optical fiber Bragg grating humidity sensor

Wei Zhang; Xianfeng Chen; Chen Liu; Yuanfu Lu; Marcos Cardoso; David J. Webb

doi:10.1117/12.2194108

28 September 2015 Improved response time of laser etched polymer optical fiber Bragg grating humidity sensor

Wei Zhang, Xianfeng Chen, Chen Liu, Yuanfu Lu, Marcos Cardoso, David J. Webb

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96343K (2015) https://doi.org/10.1117/12.2194108
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

The humidity sensor made of polymer optical fiber Bragg grating (POFBG) responds to the water content change in fiber induced by the change of environmental condition. The response time strongly depends on fiber size as the water change is a diffusion process. The ultrashort laser pulses have been providing an effective microfabrication method to achieve spatial localized modification in materials. In this work we used the excimer laser to create different microstructures (slot, D-shape) in POFBG to improve its performance. A significant improvement in the response time has been achieved in a laser etched D-shaped POFBG humidity sensor.

Citation Download Citation

Wei Zhang, Xianfeng Chen, Chen Liu, Yuanfu Lu, Marcos Cardoso, and David J. Webb "Improved response time of laser etched polymer optical fiber Bragg grating humidity sensor ", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96343K (28 September 2015); https://doi.org/10.1117/12.2194108

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