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