New passive fiber depolarizer based on cascaded all-fiber recirculating rings

Benson Paisheng Shen; Chinlon Lin

doi:10.1117/12.312865

19 June 1998 New passive fiber depolarizer based on cascaded all-fiber recirculating rings

Benson Paisheng Shen, Chinlon Lin

Proceedings Volume 3420, Optical Fiber Communication; (1998) https://doi.org/10.1117/12.312865
Event: Asia Pacific Symposium on Optoelectronics '98, 1998, Taipei, Taiwan

Abstract

We report a newly developed passive fiber depolarizer using cascaded 2 X 2 single-mode fiber couplers in a recirculating ring structure. Narrowband light source is used. The advantages are that these are all-fiber devices; they are simple, and insensitive to environmental fluctuations. Due to the cascaded incoherent recirculating fiber-ring structure, a completely depolarized light has been achieved by averaging all polarization states with equal probability. The degree of polarization as low as -20 dB has been achieved. Design criteria and design principles are discussed. Experimental results show that this new depolarizer is insensitive to the input polarization state and can eliminate the polarization noise in a polarization-sensitive fiber-optic system.

Citation Download Citation

Benson Paisheng Shen and Chinlon Lin "New passive fiber depolarizer based on cascaded all-fiber recirculating rings", Proc. SPIE 3420, Optical Fiber Communication, (19 June 1998); https://doi.org/10.1117/12.312865

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