Polarization splitter based on photonic crystal fibers

We report a new kind of polarization splitter based on dual-core photonic crystal fibers. The polarization splitter has a symmetric directional coupler configuration. Each core exhibits high birefringence, which gives rise to an adequate difference in the coupling lengths for the two orthogonal pola...

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Bibliographic Details
Published in:Optics express 2003-05, Vol.11 (9), p.1015-1020
Main Authors: Zhang, Lin, Yang, Changxi
Format: Article
Language:English
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Summary:We report a new kind of polarization splitter based on dual-core photonic crystal fibers. The polarization splitter has a symmetric directional coupler configuration. Each core exhibits high birefringence, which gives rise to an adequate difference in the coupling lengths for the two orthogonal polarizations. A 1.7-mm-long splitter is obtained with the splitting ratio better than -11 dB and a bandwidth of 40 nm. The relationship between the length of the polarization splitter and the diameter of the air hole in the middle of the two cores is discussed.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.11.001015