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

• 作 者: 武保剑 李崇真 邱昆 程立伟
• 机 构: Key Lab of Broadband Optical Fiber Transmission and Communication Networks of the Ministry of Educat
• 出 处: Chinese Optics Letters
• 发表日期: 2011年01期
• 关键词: Bragg magneto optic eigen guided letter grating magnitude rotation silica

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.

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. Of 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.