Lu Yang, Baker Chams, Chen Liang, Bao Xiaoyi
Appl Opt. 2015 Nov 10;54(32):9563-7. doi: 10.1364/AO.54.009563.
In this paper, polarization dependence of the nonlinear interaction between two sinusoidally modulated optical signals (SMOSs) in a randomly birefringent silica optical fiber is investigated analytically and experimentally. Vector analysis is performed on the nonlinear interaction between two orthogonally polarized or co-polarized SMOSs carried by identical or different laser wavelengths in a randomly birefringent silica optical fiber. Dependence of the nonlinear interaction on the polarization states of two SMOSs is investigated by analyzing the power of the first-order sideband as a result of the nonlinear interaction. The presented theoretical study reveals the polarization dependence of the nonlinear interaction between two SMOSs as confirmed by the close agreement between theoretical and experimental results. This study provides insight into the polarization dependence of operation of a Kerr phase interrogator and the tools for optimizing the performance of sensing devices based on a Kerr phase interrogator.
本文对随机双折射石英光纤中两个正弦调制光信号（SMOS）之间非线性相互作用的偏振相关性进行了理论分析和实验研究。对由相同或不同激光波长携带的两个正交偏振或同偏振SMOS在随机双折射石英光纤中的非线性相互作用进行了矢量分析。通过分析非线性相互作用产生的一阶边带功率，研究了非线性相互作用对两个SMOS偏振态的依赖性。理论研究揭示了两个SMOS之间非线性相互作用的偏振相关性，理论结果与实验结果的高度吻合证实了这一点。本研究深入了解了克尔相位询问器工作的偏振相关性，并为优化基于克尔相位询问器的传感装置性能提供了工具。
