Passive polarization rotator based on silica photonic crystal fiber for 1.31-μm and 1.55-μm bands via adjusting the fiber length

A new polarization rotator based on the silica photonic crystal fiber is proposed. The proposed polarization rotator photonic crystal fiber （PR-PCF） possesses a triangle jigsaw-shape core region. The full-vector finite-element method is used to analyze the phenomenon of polarization conversion betwe...

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Bibliographic Details
Published in:Chinese physics B 2014-10, Vol.23 (10), p.230-234
Main Author: 陈雷 张伟刚 王丽 白志勇 张珊珊 王标 严铁毅 Jonathan Sieg
Format: Article
Language:English
Subjects:
Beams (radiation)
Conversion ratio
Crystal fibers
Mathematical analysis
Mathematical models
Photonic crystals
Polarization
Silicon dioxide
Tolerances
偏振
光子晶体光纤
旋转器
有限差分光束传播法
矢量有限元法
纤维长度
调整
频带
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Summary:A new polarization rotator based on the silica photonic crystal fiber is proposed. The proposed polarization rotator photonic crystal fiber （PR-PCF） possesses a triangle jigsaw-shape core region. The full-vector finite-element method is used to analyze the phenomenon of polarization conversion between the quasi-TE and quasi-TM modes. Numerical simulations show that the wavelengths of 1.31 μm and 1.55 μm are converted with a nearly 100% polarization conversion ratio with their matched coupling length and has a relatively strong realistic fabrication tolerance - 100 nm on the y axis and 50 nm on the x axis. The full vectorial finite difference beam propagation method is used to confirm the performance of the proposed PR-PCF.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/10/104220