Low-loss segmented joint structure between a slab waveguide and arrayed waveguides designed by simple optimization method

K. Shibuya, N. A. Idris, H. Asakura, H. Tsuda

    研究成果: Conference contribution

    抄録

    Arrayed-waveguide gratings (AWG) are key devices in optical communication systems using wavelength division multiplexing (WDM), and it is essential that these AWGs are low-loss. In this paper, we propose low-loss segmented joint structures between the slab waveguide and the waveguide array in an AWG. The effectiveness of these structures is confirmed by the measurement results. In addition, improvements in the loss uniformity can be obtained by utilizing mode converting segmented structures between the waveguide array and the slab waveguide on the output side. Moreover, the passband can be flattened by employing such a structure between the input and slab waveguides. These structures were designed using the same simple calculation and optimization method. Using these optimized structures, the transmittance was improved by 17%, the largest difference in insertion loss was reduced by 1.93 dB, and the 1-dB bandwidth was extended by 20%. These structures can be fabricated with ordinary planar lightwave circuit (PLC) technologies without the need for special fabrication processes.

    本文言語English
    ホスト出版物のタイトルIntegrated Optics
    ホスト出版物のサブタイトルDevices, Materials, and Technologies XIX
    編集者Jean-Emmanuel Broquin, Gualtiero Nunzi Conti
    出版社SPIE
    ISBN(電子版)9781628414554
    DOI
    出版ステータスPublished - 2015 1 1
    イベントIntegrated Optics: Devices, Materials, and Technologies XIX - San Francisco, United States
    継続期間: 2015 2 92015 2 11

    出版物シリーズ

    名前Proceedings of SPIE - The International Society for Optical Engineering
    9365
    ISSN(印刷版)0277-786X
    ISSN(電子版)1996-756X

    Other

    OtherIntegrated Optics: Devices, Materials, and Technologies XIX
    CountryUnited States
    CitySan Francisco
    Period15/2/915/2/11

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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