Abstract
A novel concept of a Fabry–Perot (F–P) cavity composed of two linearly chirped fiber Bragg gratings written in a thermally fused fiber taper is presented. Both chirped gratings are written in counter-directional chirp configuration, where chirps resulting from the optical fiber taper profile and linearly increasing grating periods cancel each other out, forming a high-quality F–P resonator. A new strain-sensing mechanism is proposed in the presented structure, which is based on strain-induced detuning of the F–P resonator. Due to the different strain and temperature responses of the cavity, the resonator can be used for the simultaneous measurement of these physical quantities, or it can be used as a temperature-independent strain sensor.
© 2017 Optical Society of America
Full Article | PDF ArticleMore Like This
Konrad Markowski, Piotr Araszkiewicz, Juliusz Bojarczuk, and Krzysztof Perlicki
Opt. Lett. 45(10) 2838-2841 (2020)
Xinpu Zhang, Liyang Shao, Xihua Zou, Bin Luo, Wei Pan, and Lianshan Yan
Opt. Lett. 42(17) 3474-3477 (2017)
Konrad Markowski, Kazimierz Jedrzejewski, and Tomasz Osuch
Appl. Opt. 55(17) 4505-4513 (2016)