Analysis of the nonlinearity in Mach-Zehnder heterodyne interferometric polarimeter

LIU Hong-bing; LI Yu-dong; CUI Guo-xin; ZHANG Yan-feng; CHEN Jing; XU Jing-jun; SUN Qian

Mach-Zehnder heterodyne interferometric polarimeter can precisely measure the polarization state of light in real time.In order to improve the measurement precision and reduce the nonlinear erzor,which arises from the elliptical polarization of the laser,polarization leakage of the polarized beam sputter(PBS) and misalignment of the PBS were analyzed.The erzor formula was deduced.The simulation results showed that different amplitude ratio and phase difference of the measured beam had different nonlinear error output.The erzor was quite similar to the nonlinear erzor calculated in the Michelson heterodyne interferometer.

Corresponding author: SUN Qian, qiansun@nankai.edu.cn

1. Key Laboratory of Weak-Light Nonlinear Photonics of Ministry of Education, Nankai University, Tianjin 300457, China;

2. Tianjin Key Laboratory of Photonics Materials and Technique, Nankai University, Tianjin 300457, China

Received Date: 2008-01-17

Accepted Date: 2008-02-20

Available Online: 2009-06-25

Abstract: Mach-Zehnder heterodyne interferometric polarimeter can precisely measure the polarization state of light in real time.In order to improve the measurement precision and reduce the nonlinear erzor,which arises from the elliptical polarization of the laser,polarization leakage of the polarized beam sputter(PBS) and misalignment of the PBS were analyzed.The erzor formula was deduced.The simulation results showed that different amplitude ratio and phase difference of the measured beam had different nonlinear error output.The erzor was quite similar to the nonlinear erzor calculated in the Michelson heterodyne interferometer.

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Reference (17)

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Analysis of the nonlinearity in Mach-Zehnder heterodyne interferometric polarimeter

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