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Proceedings Article

Fiber ring depolarizer with one degree of freedom

[+] Author Affiliations
Tao Liu, Qingyang Yu, Chunhua Wang, Li Li, Shengfei Zhang

Shanghai Univ. (China)

Proc. SPIE 8557, Optical Design and Testing V, 85571R (November 26, 2012); doi:10.1117/12.999772
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From Conference Volume 8557

  • Optical Design and Testing V
  • Yongtian Wang; Chunlei Du; Hong Hua; Kimio Tatsuno; H. Paul Urbach
  • Beijing, China | November 05, 2012

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. © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Tao Liu ; Qingyang Yu ; Chunhua Wang ; Li Li and Shengfei Zhang
" Fiber ring depolarizer with one degree of freedom ", Proc. SPIE 8557, Optical Design and Testing V, 85571R (November 26, 2012); doi:10.1117/12.999772; http://dx.doi.org/10.1117/12.999772


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