A compact single-mode fiber ring depolarizer

Wenyue Hao; Chunhua Wang; Li Li; Jiashi Wang; Weijie Fan

doi:10.1117/12.904628

29 November 2011 A compact single-mode fiber ring depolarizer

Wenyue Hao, Chunhua Wang, Li Li, Jiashi Wang, Weijie Fan

Proceedings Volume 8307, Passive Components and Fiber-Based Devices VIII; 83071Y (2011) https://doi.org/10.1117/12.904628
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

In this paper, a degree of polarization (DOP) tunable single-mode fiber ring depolarizer is proposed and demonstrated. The fiber ring is made of a 2×2 coupler and a piece of single-mode fiber delay line, which is wound into a coil performing as a half-wave plate. For a random input state of polarization, the full depolarization can be realized by rotating the whole set of fiber ring through a proper angle, and for a linearly-polarized input light, the output DOP can change from one to zero. In our experiment for a fiber ring with a delay line of 10 meters, a Fabry-Perot (FP) laser with 8-meter coherent length is depolarized with a DOP less than 1%.

Citation Download Citation

Wenyue Hao, Chunhua Wang, Li Li, Jiashi Wang, and Weijie Fan "A compact single-mode fiber ring depolarizer", Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 83071Y (29 November 2011); https://doi.org/10.1117/12.904628

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