Title :
Linear birefringence and imperfect quarter wave plate effects on optic-fiber current sensor
Author :
Ding, Ying ; Dong, Yi ; Zhu, Jun ; Zheng, Bofang ; Zhang, Damin ; Hu, Weisheng
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
The scale factor of optic-fiber current sensor is nonlinearized because of the linear birefringence and the imperfection of quarter wave plate (QWP). In this paper, we analyze the effects of birefringence and show that modified scale factor performs better by using Faraday rotate mirror (FRM) and harmonic division method. The scale factor error associated with integrating imperfect quarter wave plate is also analyzed. Moreover, a certain linear birefringence may be helpful to compensate for deviation of QWP´s alignment.
Keywords :
Faraday effect; birefringence; electric current measurement; electric sensing devices; fibre optic sensors; mirrors; optical fibres; optical retarders; FRM; Faraday rotate mirror; harmonic division method; imperfect quarter wave plate effect; linear birefringence effect; optic fiber current sensor; quarter-wave plate alignment; Integrated optics; Optical fiber sensors; Optical fibers; Optical polarization; Faraday rotate mirror; linear birefringence; optic-fiber current sensor; quarter wave plate;
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
