Optical high-gain leaky-wave antenna by using a waffle-iron waveguide

DOI Web Site Open Access
  • Kaneoka Shunichi
    Graduate School of Engineering Science, Yokohama National University
  • Iida Wataru
    Graduate School of Engineering Science, Yokohama National University
  • Hashiguchi Hiroshi
    Graduate School of Engineering Science, Yokohama National University
  • Baba Toshihiko
    Graduate School of Engineering Science, Yokohama National University
  • Arai Hiroyuki
    Graduate School of Engineering Science, Yokohama National University

Abstract

<p>This paper presents a comparison of optical leaky-waveguide antennas, i.e., grating waveguide (GWG), waffle waveguide (WWG), and waffle-iron waveguide (WIWG), using both simulations and measurements. WIWG radiates a narrow beam that is tilted by sweeping the incident wavelength, and it possesses a higher antenna gain than GWG and WWG under the same fabrication condition. The reason is due to a slight difference in the effective index along the longitudinal sections, which provides a large aperture size for high antenna gain. We simulate the antenna characteristics and experimentally confirm the high antenna gain.</p>

Journal

  • IEICE Electronics Express

    IEICE Electronics Express 18 (1), 20200411-20200411, 2021-01-10

    The Institute of Electronics, Information and Communication Engineers

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