A capillary-based in-line interferometer for twist sensing

Jiajian Ruan; Pin Xu; Xiaoyong Chen

doi:10.1117/12.2590824

18 March 2021 A capillary-based in-line interferometer for twist sensing

Jiajian Ruan, Pin Xu, Xiaoyong Chen

Proceedings Volume 11780, Global Intelligent Industry Conference 2020; 117801Z (2021) https://doi.org/10.1117/12.2590824
Event: Global Intelligent Industry Conference 2020, 2020, Guangzhou, China

Abstract

We propose and experimentally demonstrate an in-line interferometer, which is based on a capillary spliced between two single mode fibers (SMFs) with a certain of transverse offset. As two main modes, LP01 and LP11, are excited and propagate in the capillary wall, they will interfere with each other when they meet again in the output-SMF. Due to the characteristic of polarization dependent in the LP11 mode, the proposed capillary-based interferometer can be designed for twist sensing. Experimental results show that our proposed capillary-based interferometer can provide sensitivities higher than 90 pm/° in both anticlockwise and clockwise twist in the range of 10° – 90°.

Citation Download Citation

Jiajian Ruan, Pin Xu, and Xiaoyong Chen "A capillary-based in-line interferometer for twist sensing", Proc. SPIE 11780, Global Intelligent Industry Conference 2020, 117801Z (18 March 2021); https://doi.org/10.1117/12.2590824

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