Design of diamond-shape photonic crystal fiber polarization filter based on surface plasma resonance effect |
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| Authors: | Yongxia Zhang Jinhui Yuan Yuwei Qu Xian Zhou Binbin Yan Qiang Wu Kuiru Wang Xinzhu Sang Keping Long Chongxiu Yu |
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| Affiliation: | Research Center for Convergence Networks and Ubiquitous Services;State Key Laboratory of Information Photonics and Optical Communications;Department of Physics and Electrical Engineering |
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| Abstract: | A novel plasmonic polarization filter based on the diamond-shape photonic crystal fiber(PCF) is proposed. The resonant coupling characteristics of the PCF polarization filter are investigated by the full-vector finite-element method. By optimizing the geometric parameters of the PCF, when the fiber length is 5 mm, the polarization filter has a bandwidth of 990 nm and an extinction ratio(ER) of lower than -20 dB. Moreover, a single wavelength polarization filter can also be achieved, along with an ER of -279.78 dB at wavelength 1.55 μm. It is believed that the proposed PCF polarization filter will be very useful in laser and optical communication systems. |
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| Keywords: | photonic crystal fiber polarization filter extinction ratio |
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