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Polarization Preservation in Long-Length Twisted Single-Mode Optical Fibers

Susumu MACHIDA, Jun-ichi SAKAI, Tatsuya KIMURA

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Summary :

Twisted single-mode fibers show a high degree of polarization for any incident polarization state, when phase compensation is performed at the fiber output. The performance is demonstrated in a 1.14 km long fiber with a twist rate of 2 turns/m. Polarization degree, output polarization ellipticity, and output polarization major axis angle were studied experimentally and theoretically in terms of the fiber twist rate. Preservation of circular polarization without phase compensation, in particular, is also verified in the twisted fiber. Polarization characteristics are stable against external perturbations. It was also confirmed that proper orthogonal elliptical polarization states exist, in genaral, which are maintained over a 5 km long fiber.

Publication
IEICE TRANSACTIONS on transactions Vol.E65-E No.11 pp.642-648
Publication Date
1982/11/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Optical and Quantum Electronics

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