.Influence of polarization extinction ratio on distributed polarization coupling detection[J].Optoelectronics Letters,2008,4(4):292-294 Influence of polarization extinction ratio on distributed polarization coupling detection College of Precision Instrument ＆ Optoelectronics Engineering, Key Laboratory for Optoelectronics Information and Technical Science of National Ministry of Education, Tianjin University, Tianjin 300072, China Abstract:       Distributed polarization coupling in polarization-maintaining fibers can be detected by using a white light Michelsonin terferorneter. This technique usually requires that only one polarization mode is excited. However, in practical measurement,the injection polarization direction could not be exactly aligned to one of the principal axes of the PMF, so the influence of the polarization extinction ratio should be considered. Based on the polarization coupling theory, the influence of theincident polarization extinction on the measurement result is evaluated and analyzed, and a method for distributed polarization coupling detection is developed when both two orthogonal eigenmodes are excited. Hits: 3528 Download times: 170 View Full Text    Download reader