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Proceedings Paper

Fiber ring depolarizer with one degree of freedom
Author(s): Tao Liu; Qingyang Yu; Chunhua Wang; Li Li; Shengfei Zhang
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Paper Abstract

A one-degree of freedom (DOF) tunable single fiber ring depolarizer is proposed by setting the bend-induced birefringence in the fiber ring specially to behave as a half-wave plate (HWP) and with the optimal coupling ratio of the coupler. Depolarization can be realized by just rotating the fiber ring. The methods of making and testing the HWPperformance of the fiber ring are analyzed and discussed. A 12-meter long fiber ring depolarizer is demonstrated to depolarize a Fabry-Perot (FP) laser with 10-meter coherent length. Degree of polarization (DOP) of 1.5% can be reached by rotating the whole set of fiber ring. Moreover, if a polarizer ahead of the fiber ring is inserted, a full scale one degree of freedom tunable depolarizer can be realized.

Paper Details

Date Published: 26 November 2012
PDF: 6 pages
Proc. SPIE 8557, Optical Design and Testing V, 85571R (26 November 2012);
Show Author Affiliations
Tao Liu, Shanghai Univ. (China)
Qingyang Yu, Shanghai Univ. (China)
Chunhua Wang, Shanghai Univ. (China)
Li Li, Shanghai Univ. (China)
Shengfei Zhang, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 8557:
Optical Design and Testing V
Yongtian Wang; Chunlei Du; Hong Hua; Kimio Tatsuno; H. Paul Urbach, Editor(s)

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