45 degree coupling loss for non-round fiber core in the Lyot fiber depolarizer

Lei Fu; Zhengfeng Zou; Shufen Chen; Yanbin Meng; Jun Wang

doi:10.1117/12.790817

22 February 2008 45° coupling loss for non-round fiber core in the Lyot fiber depolarizer

Lei Fu, Zhengfeng Zou, Shufen Chen, Yanbin Meng, Jun Wang

Proceedings Volume 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology; 662212 (2008) https://doi.org/10.1117/12.790817
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

There is a coupling loss at the joint of the Lyot depolarizer consisting of two sections of birefringent fiber (Polarization Maintaining fiber or PM fiber) with non-round fiber core. The contribution to the loss for the non-roundness of the fiber core was calculated and analyzed using a method based on second moment. And the result obtained is in agreement with the experiment and so demonstrates the exist of the loss. This also provides a method of analyzing and calculating the coupling loss for non-round fiber core in the paper and is useful for manufacturing the Lyot fiber depolarizer and researching on the stability of the depolarizer type of a single mode interference fiber optic gyro (IFOG).

Citation Download Citation

Lei Fu, Zhengfeng Zou, Shufen Chen, Yanbin Meng, and Jun Wang "45° coupling loss for non-round fiber core in the Lyot fiber depolarizer", Proc. SPIE 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, 662212 (22 February 2008); https://doi.org/10.1117/12.790817

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