Distributed birefringence measurement of a polarization maintaining fiber with a 20cm resolution over a 500m range based on Brillouin dynamic grating

Yongkang Dong; Hongying Zhang; Zhiwei Lu; Liang Chen; Xiaoyi Bao

doi:10.1117/12.974968

17 October 2012 Distributed birefringence measurement of a polarization maintaining fiber with a 20cm resolution over a 500m range based on Brillouin dynamic grating

Yongkang Dong, Hongying Zhang, Zhiwei Lu, Liang Chen, Xiaoyi Bao

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84211B (2012) https://doi.org/10.1117/12.974968
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We demonstrate a distributed birefringence measurement of a polarization-maintaining fiber with a 20 cm resolution over a 500 m fiber based on Brillouin dynamic grating with the scheme including a CW pump1, a 20 ns square pump2 pulse, and a 2 ns square probe pulse. The measurement results show ~ 3% fluctuation of the birefringence over the entire 500 m fiber. We also observed the birefringence change caused by the uneven stress as winding the fiber around a spool with a spatial period of 49 cm and the residual stress during the fiber drawing and coating processes.

Citation Download Citation

Yongkang Dong, Hongying Zhang, Zhiwei Lu, Liang Chen, and Xiaoyi Bao "Distributed birefringence measurement of a polarization maintaining fiber with a 20cm resolution over a 500m range based on Brillouin dynamic grating", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84211B (17 October 2012); https://doi.org/10.1117/12.974968

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