Strictly Non-Blocking Silicon Photonics Switches

DOI Web Site 21 References
  • SUZUKI Keijiro
    National Institute of Advanced Industrial Science and Technology (AIST)
  • KONOIKE Ryotaro
    National Institute of Advanced Industrial Science and Technology (AIST)
  • SUDA Satoshi
    National Institute of Advanced Industrial Science and Technology (AIST)
  • MATSUURA Hiroyuki
    National Institute of Advanced Industrial Science and Technology (AIST)
  • NAMIKI Shu
    National Institute of Advanced Industrial Science and Technology (AIST)
  • KAWASHIMA Hitoshi
    National Institute of Advanced Industrial Science and Technology (AIST)
  • IKEDA Kazuhiro
    National Institute of Advanced Industrial Science and Technology (AIST)

Abstract

<p>We review our research progress of multi-port optical switches based on the silicon photonics platform. Up to now, the maximum port-count is 32 input ports×32 output ports, in which transmissions of all paths were demonstrated. The switch topology is path-independent insertion-loss (PILOSS) which consists of an array of 2×2 element switches and intersections. The switch presented an average fiber-to-fiber insertion loss of 10.8 dB. Moreover, -20-dB crosstalk bandwidth of 14.2 nm was achieved with output-port-exchanged element switches, and an average polarization-dependent loss (PDL) of 3.2 dB was achieved with a non-duplicated polarization-diversity structure enabled by SiN overpass waveguides. In the 8×8 switch, we demonstrated wider than 100-nm bandwidth for less than -30-dB crosstalk with double Mach-Zehnder element switches, and less than 0.5 dB PDL with polarization diversity scheme which consisted of two switch matrices and fiber-type polarization beam splitters. Based on the switch performances described above, we discuss further improvement of switching performances.</p>

Journal

  • IEICE Transactions on Electronics

    IEICE Transactions on Electronics E103.C (11), 627-634, 2020-11-01

    The Institute of Electronics, Information and Communication Engineers

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