Accurate method for measuring the thermal coefficient of group birefringence of polarization-maintaining fibers |
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| Authors: | Ding Zhenyang Meng Zhuo Yao X Steve Chen Xiaojun Liu Tiegen Qin Mingliang |
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| Affiliation: | Polarization Research Center, College of Precision Instrument & Opto-electronics Engineering and Key Laboratory of Opto-electronics Information and Technical Science (Tianjin University), Ministry of Education, Tianjin University, Tianjin 300072, China. |
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| Abstract: | ![]()
We present a method to accurately measure the group birefringence variation with temperature in high-birefringence polarization-maintaining (PM) fibers using a distributed polarization analyzer. By analyzing polarization cross-talk peaks purposely induced at both ends of a PM fiber, the temperature coefficient of group birefringence can be accurately obtained. We confirm the theoretical prediction that the group birefringence of PANDA and TIGER PM fibers decrease linearly with temperature from -40 °C to 80 °C, and find that the temperature coefficients are -5.93 × 10(-7) °C(-1) and -5.29 × 10(-7) °C(-1) for two types of PANDA fibers, and -5.36 × 10(-7) °C(-1) for a TIGER fiber. |
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