Simulation model of magneto-optic fiber Bragg gratings and its applications in Sagnac interferometers

作     者：Shijuan WU Baojian WU Kun QIU Chongzhen LI 

作者机构：Key Lab of Broadband Optical Fiber Transmission and Communication Networks of the Ministry of EducationUniversity of Electronic Science and Technology of China 

出 版 物：《Frontiers of Optoelectronics》 (光电子前沿(英文))

年 卷 期：2010年第3卷第4期

页      面：359-363页

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National High Technology Research and Development Program of China (No.2009AA01Z216) by Program for New Century Excellent Talents in University (NCET-08) 

主　　题：magneto-optic fiber Bragg grating (MFBG) Optisystem simulation polarization-dependent loss (PDL) Sagnac interferometer (SI) 

摘      要：According to the symmetry of transmission matrix for non-uniform magneto-optic fiber Bragg gratings(MFBGs), the simulation model of the non-uniform MFBGs with bidirectional injection of light has been presented for the Optisystem software. The simulation model is verified by comparing with the Matlab numeric results using the piecewise-uniform MFBG model. As an example, the polarization-dependent loss(PDL) of an MFBG-based Sagnac interferometer(MSI) is analyzed in detail. Simulation results indicate that the magnetic field sensitivity of the MSI system can be improved by optimizing the coupling coefficient of the coupler, and the maximum of peak PDL is up to three times that of the single MFBG structure. The simulation model proposed in the paper is useful for the design of MFBG-based optical information devices.