Study of the polarization maintaining optical fiber beat length variation with external force

Zhonghua Ou; Ping Sun; Yu Chen; Jian-feng Li; Yong Liu; Huimin Yue; Zhiyong Dai; Lixun Zhang

doi:10.1117/12.2034285

29 August 2013 Study of the polarization maintaining optical fiber beat length variation with external force

Zhonghua Ou, Ping Sun, Yu Chen, Jian-feng Li, Yong Liu, Huimin Yue, Zhiyong Dai, Lixun Zhang

Proceedings Volume 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography; 89140T (2013) https://doi.org/10.1117/12.2034285
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

The polarization maintaining fiber has been playing an important role in the fields of optical fiber sensing, communication, and so on. The beat length is one of the main parameters of polarization maintaining fiber, and it usually represents its polarization maintaining performance. In this paper, the beat length variation of Panda fiber with external force is investigated. The simulation results indicate that the beat length variation was determined both by the external force value F and the angle θ between the external force direction and the slow axis of Panda fiber. When F is a constant, the beat length of polarization maintaining fiber is changed in sinusoidal form whose various cycle is π with the variation of θ. Meanwhile, the minimum and maximum values of beat length will be obtained when the angles are even multiple of π/2 or odd multiple of π/2, respectively. When θ is a constant, the beat length is changed in linear form with the increasing of external force value. Finally, the experimental system of beat length measurement based on Sagnac interferometer loop is illustrated, and the result shows an excellent agreement with the theoretical analysis.

Citation Download Citation

Zhonghua Ou, Ping Sun, Yu Chen, Jian-feng Li, Yong Liu, Huimin Yue, Zhiyong Dai, and Lixun Zhang "Study of the polarization maintaining optical fiber beat length variation with external force", Proc. SPIE 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography, 89140T (29 August 2013); https://doi.org/10.1117/12.2034285

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KEYWORDS

Polarization maintaining fibers

Optical fibers

Sagnac interferometers

Polarization

Birefringence

Sensors

Fiber optic communications

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