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Proceedings Paper

Sagnac interferometer with polarization maintaining fiber for vector transversal loading measurement
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Paper Abstract

In this paper, a Sagnac interferometer with polarization maintaining fiber (PMF) for vector transversal loading measurement has been proposed and experimentally demonstrated. The light propagated in different axes of the PMF has different velocity because of fiber birefringence, which results in phase difference, and thus interferometer pattern is produced. When the birefringence parameters are affected by transversal loading, the phase difference of the light propagating in different axes will change, and as a result of the interferometer pattern of the Sagnac loop shifts. When transversal loading with the opposite direction is applied on the sensing fiber, the interferometer pattern also shifts, but oppositely to longer or shorter wavelength, by monitoring which vector transversal loading measurement can be achieved. The sensing characteristics when transversal loading is applied in different angles have also been studied. The proposed measurement method has a simple structure, and is easy to implement, which shows a good application prospects in the sensing field.

Paper Details

Date Published: 25 October 2018
PDF: 7 pages
Proc. SPIE 10822, Real-time Photonic Measurements, Data Management, and Processing III, 108220S (25 October 2018); doi: 10.1117/12.2501221
Show Author Affiliations
Xinying Chen, Xiamen Univ. (China)
Weisheng Liu, Zhongke Haidun Information Systems Co., Ltd (China)
Rui Wu, Xiamen Univ. (China)
Shangwu Yang, Xiamen Univ. (China)
Jin Yun, Xiamen Univ. (China)
Hongyan Fu, Xiamen Univ. (China)


Published in SPIE Proceedings Vol. 10822:
Real-time Photonic Measurements, Data Management, and Processing III
Ming Li; Bahram Jalali; Keisuke Goda; Kevin K. Tsia, Editor(s)

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