Four-port microfiber long-period grating sensors

Li-Peng Sun; Jie Li; Long Jin; Bai-Ou Guan

doi:10.1117/12.2025998

20 May 2013 Four-port microfiber long-period grating sensors

Li-Peng Sun, Jie Li, Long Jin, Bai-Ou Guan

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 879421 (2013) https://doi.org/10.1117/12.2025998
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

We demonstrate four-port long-period gratings formed by winding an optical microfiber with another thinner microfiber. The surrounding thinner microfiber not only induces a strong refractive-index perturbation in the center microfiber, but also collects and leads out the light resonantly coupled from the fundamental mode to high-order modes, providing flexibility for applications as optical filters and sensors. The devices exhibit temperature sensitivity of 7.6 pm/°C, strain sensitivity of -10.6 pm/μ(epsilon) and refractive-index sensitivity of 2012.6 nm/RIU.

Citation Download Citation

Li-Peng Sun, Jie Li, Long Jin, and Bai-Ou Guan "Four-port microfiber long-period grating sensors", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879421 (20 May 2013); https://doi.org/10.1117/12.2025998

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