Silicon photonics based 1 × 2 wavelength selective switch using fold-back arrayed-waveguide gratings

Fumi Nakamura; Hideaki Asakura; Keijiro Suzuki; Ken Tanizawa; Minoru Ohtsuka; Nobuyuki Yokoyama; Kazuyuki Matsumaro; Miyoshi Seki; Keiji Koshino; Kazuhiro Ikeda; Shu Namiki; Hitoshi Kawashima; Hiroyuki Tsuda

doi:10.1587/elex.15.20180532

LETTER

Silicon photonics based 1 × 2 wavelength selective switch using fold-back arrayed-waveguide gratings

Fumi Nakamura, Hideaki Asakura, Keijiro Suzuki, Ken Tanizawa, Minoru Ohtsuka, Nobuyuki Yokoyama, Kazuyuki Matsumaro, Miyoshi Seki, Keiji Koshino, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, Hiroyuki Tsuda

Author information

Fumi Nakamura
Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University
Hideaki Asakura
Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University
Keijiro Suzuki
National Institute of Advanced Industrial Science and Technology (AIST)
Ken Tanizawa
National Institute of Advanced Industrial Science and Technology (AIST)
Currently with Quantum ICT Research Institute, Tamagawa University
Minoru Ohtsuka
National Institute of Advanced Industrial Science and Technology (AIST)
Nobuyuki Yokoyama
National Institute of Advanced Industrial Science and Technology (AIST)
Kazuyuki Matsumaro
National Institute of Advanced Industrial Science and Technology (AIST)
Miyoshi Seki
National Institute of Advanced Industrial Science and Technology (AIST)
Keiji Koshino
National Institute of Advanced Industrial Science and Technology (AIST)
Kazuhiro Ikeda
National Institute of Advanced Industrial Science and Technology (AIST)
Shu Namiki
National Institute of Advanced Industrial Science and Technology (AIST)
Hitoshi Kawashima
National Institute of Advanced Industrial Science and Technology (AIST)
Hiroyuki Tsuda
Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University

Keywords: silicon photonics, optical switch, optical communication, arrayed waveguide grating, waveguide crossing, wavelength selective switch

JOURNAL FREE ACCESS

2018 Volume 15 Issue 14 Pages 20180532

DOI https://doi.org/10.1587/elex.15.20180532

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Details

Abstract

We report on a novel design of a wavelength selective switch (WSS) using silicon photonics technology. It comprises of 1 × 4 interleavers, arrayed-waveguide gratings (AWGs) connected to fold-back waveguides, and 1 × 2 optical Mach-Zehnder interferometer switches. In the proposed WSS, fold-back waveguides enable the AWGs to be used for both demultiplexing and multiplexing. Therefore the WSS has less waveguide crossings than a conventional configuration. Moreover, a 20-channel, 200-GHz spacing, 1 × 2 fold-back type WSS was fabricated on 5 mm × 10 mm SOI chip using CMOS technology.

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