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Design and analysis of concave diffraction grating with one-dimensional photonic bandgap structure

机译:一维光子带隙结构的凹面衍射光栅的设计与分析

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摘要

Matching one-dimensional photonic bandgap theory with the grating condition, a novel design approach of the etched diffraction grating for the demultiplexer was proposed. With a stack of eight alternating dielectric layers per grating tooth, a computed reflection efficiency of 98% around the central wavelength was achieved by this method. The grating efficiency approached —0.78 dB with a channel uniformity of 0.06 dB over 120 nm bandwidth, and the neighbor channel crosstalk was better than —20 dB. An analysis of etching deviation suggests that the diffraction grating designed by this approach is very tolerant concerning fabrication imperfections.
机译:结合一维光子带隙理论与光栅条件,提出了一种新的多路分解器刻蚀衍射光栅设计方法。在每个光栅齿上堆叠八层交替的介电层的情况下,通过该方法可实现在中心波长周围98%的计算反射效率。光栅效率在120 nm带宽上达到0.06 dB的通道均匀度,接近-0.78 dB,并且相邻通道的串扰优于-20 dB。蚀刻偏差的分析表明,通过这种方法设计的衍射光栅在制造缺陷方面非常宽容。

著录项

  • 来源
    《Optical and quantum electronics》 |2017年第8期|263.1-263.10|共10页
  • 作者单位

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China,Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong University, Xi'an 710049, China;

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China,Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong University, Xi'an 710049, China;

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China,Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong University, Xi'an 710049, China;

    Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China,Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong University, Xi'an 710049, 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

    Diffraction grating; One-dimensional photonic crystal; Wavelength division multiplexer; Reflection bandgap; Plannar waveguide;

    机译:衍射光栅;一维光子晶体;波分复用器;反射带隙;平面波导;

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