Characteristics of light polarization in magneto-optic fiber Bragg gratings with linear birefringence

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2011,（1）
• 页码范围: 24-27
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201109.010601

摘要

The coupling between guided optical waves in magneto-optic fiber Bragg gratings (MFBGs) with linear birefringence is investigated using the eigen-mode and coupled-mode approaches. The relationship between the polarization-dependent loss (PDL) and the eigen states of polarization (SOPs) in the MFBGs is discussed. Only the MFBGs with low linear birefringence are applied to the peak PDL-based magnetic field measurement, after which the linear dynamic range is determined using the relative magnitude of linear and magnetically induced circular birefringence. In this letter, a theoretical model is presented to explain the experimental results and help develop novel MFBG-based devices.