title: Method to measure the second-order birefringence vector distribution along optical fibers based on high-speed polarization optical time domain reflectometry.
abstract: Based on a high-speed polarization optical domain reflectometry, an innovative method to measure the second-order birefringence vector distribution along optical fibers was proposed and implemented in this paper. Some interesting data were obtained along a 1 km long single mode fiber by only one detection. The second-order birefringence magnitude distribution curve can reflect both magnitude and direction change information of the first-order birefringence, and it was more stable (except the catastrophe points) than that of the first-order. The larger variable range of the second-order birefringence magnitude may provide a higher sensitivity than the first-order for birefringence-based distributed sensors.
authors.affiliation: Institute of Optical Information, Beijing Jiaotong University, Beijing, China. ioicshang@gmail.com
authors.forename: Chao
authors.initials: C
authors.lastname: Shang
authors.forename: Chongqing
authors.initials: C
authors.lastname: Wu
authors.forename: Zhi
authors.initials: Z
authors.lastname: Wang
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Wang
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Zhengyong
authors.initials: Z
authors.lastname: Li
authors.forename: Shuangshou
authors.initials: S
authors.lastname: Yang