title: Accurate method for measuring the thermal coefficient of group birefringence of polarization-maintaining fibers.
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.
authors.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.
authors.forename: Zhenyang
authors.initials: Z
authors.lastname: Ding
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Meng
authors.forename: X Steve
authors.initials: XS
authors.lastname: Yao
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Chen
authors.forename: Tiegen
authors.initials: T
authors.lastname: Liu
authors.forename: Mingliang
authors.initials: M
authors.lastname: Qin