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

被引：0

作者：

Dong, Yongkang ^{[1
,2
]}

Zhang, Hongying ^{[2
,3
]}

Lu, Zhiwei ^{[1
]}

Chen, Liang ^{[2
]}

Bao, Xiaoyi ^{[2
]}

机构：

[1] Harbin Inst Technol, Inst Optoelect, Harbin 150001, Peoples R China

[2] Univ Ottawa, Dept Phys, Fiber Optic Grp, Ottawa, ON K1N 6N5, Canada

[3] Harbin Univ Sci & Technol, Dept Opt informat Sci & technol, Harbin 150080, Peoples R China

来源：

22ND INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, PTS 1-3 | 2012年 / 8421卷

关键词：

Polarization-maintaining fiber; birefringence; distributed measurement; stimulated Brillouin scattering; SAGNAC INTERFEROMETER; MODAL BIREFRINGENCE; DOMAIN MEASUREMENT; DISPERSION;

D O I：

10.1117/12.974968

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

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 similar to 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.

引用

页数：4

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