Stress Direction Measurement Based on Polarization State in Optical Fibers Using the Quaternion Method

被引：4
作者：
Huang, Zejia [1 ]
Wu, Chongqing [1 ]
Wang, Zhi [1 ]
机构：
[1] Beijing Jiaotong Univ, Key Lab, Educ Minist Luminescence & Opt Informat Technol, Inst Opt Informat,Sch Sci, Beijing 100044, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2017年 / 9卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Birefringence quaternion; polarization-maintaining fibers; fiber optics sensor; fiber stress measurement; SINGLE-MODE FIBERS; MAINTAINING FIBER; SAGNAC INTERFEROMETER; VIBRATION SENSOR; BIREFRINGENCE; SENSITIVITY; PRESSURE; OTDR;
D O I：
10.1109/JPHOT.2017.2764102
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The state of polarization (SOP) in a polarization-maintaining fiber subjected to external stress is studied using the quaternion method. The stress principal axis on the Poincare sphere is independent of intrinsic birefringence, but has a linear relationship with the direction of external stress. The above linear relationship, in turn, enables a measurement of the external stress's direction by calculating the consecutive trajectory of SOP on the Poincare sphere. This method is proposed and experimentally validated by measuring different types of fibers with maximum angle measurement errors of less than 2.24%.
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页数：11
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