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首页> 外文期刊>Optical and quantum electronics >A miniaturized and high-bandwidth polarization filter based on a plasmonic and liquid crystal offset core photonic crystal fiber
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A miniaturized and high-bandwidth polarization filter based on a plasmonic and liquid crystal offset core photonic crystal fiber

机译：基于等离子体和液晶偏移芯光子晶纤维的小型化和高带宽偏振滤波器

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摘要

Miniaturized and broadband polarization-dependent filters with high crosstalk values are extremely desirable for practical applications in the fields of optical communications and sensing. A miniaturized photonic crystal fiber (PCF) with highly broadband polarization filtering properties is proposed in this paper. Two relatively large air holes coated with a gold film on opposite sides of the liquid crystal-filled offset core are introduced in this PCF structure to produce highly broadband polarization-dependent filtering transmissions. The impacts of the filtering properties with variable structural parameters have been studied based on the finite element method. By altering the gold film thickness (t) to be 18.7 nm and 13.8 nm, the proposed broadband polarization filter offers high resonance peaks of 2041.79 dB/cm and 2342.88 dB/cm for y-polarized mode at the wavelengths of 1.31 μm and 1.55 μm, while the corresponding loss for x-polarized one is 0.10 dB/cm and 0.83 dB/cm, respectively. Moreover, the crosstalk of the 100-μm-long PCF polarization filter with t= 18.7 nm and t= 13.8 nm is up to 177.34 dB and 203.43 dB at 1.31 μm and 1.55 μm, respectively. As the fiber length is 100 μm, the bandwidth with the crosstalk less than -20 dB can be up to 1200 nm, from 1.2 to 2.4 μm. In addition, the proposed broadband and miniaturized PCF filter is not sensitive to the temperature variation and exhibits stable filtering characteristics with the ± 1% fabrication tolerances.
机译：具有高串扰值的小型化和宽带极化依赖性过滤器对于光学通信和感测领域的实际应用非常适合。本文提出了具有高宽带极化滤波特性的小型化光子晶体纤维（PCF）。在该PCF结构中引入了涂有金箔的两个相对大的空穴，涂有液晶型偏移芯的相对侧面，以产生高宽带极化依赖性滤波传动。基于有限元方法研究了过滤性能与可变结构参数的影响。通过将金膜厚度（t）改变为18.7nm和13.8nm，所提出的宽带偏振滤光器在波长为1.31μm和1.55μm的波长下提供2041.79dB / cm和2342.88dB / cm的高共振峰值，为Y偏振模式为1.55μm ，而X偏振的相应损耗分别为0.10dB / cm和0.83dB / cm。此外，具有T = 18.7nm和T = 13.8nm的100μm-long PCF偏振滤波器的串扰分别为177.34dB，分别为1.31μm和1.55μm的203.43dB。随着纤维长度为100μm，具有小于-20dB的串扰的带宽可以高达1200nm，从1.2到2.4μm。此外，所提出的宽带和小型化的PCF过滤器对温度变化不敏感，并且具有±1％的制造公差的稳定过滤特性。

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  • 来源
    《Optical and quantum electronics》 |2020年第9期|409.1-409.14|共14页
  • 作者

    Linghong Jiang; Guoxu Zhang; Yiyang Zhang; Jinhong Zou; Chao Wang; Yuefeng Qi; Lantian Hou;

  • 作者单位

    Intelligence and Information Engineering College Tangshan University Tangshan 063000 China;

    Intelligence and Information Engineering College Tangshan University Tangshan 063000 China;

    Intelligence and Information Engineering College Tangshan University Tangshan 063000 China;

    Nanchang Institute of Technology Nanchang 330108 China;

    Intelligence and Information Engineering College Tangshan University Tangshan 063000 China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 China;

    State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Photonic crystal fiber; Polarization filter; Liquid crystal offset core; Surface plasmons;

    机译：光子晶纤维;偏振滤波器;液晶偏移芯;表面等离子体;

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