Integrated silicon photonic wavelength-selective switch using wavefront control waveguides

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

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    A wavelength selective switch (WSS) can route optical signals into any of output ports by wavelength, and is a key component of the reconfigurable optical add/drop multiplexer. We propose a wavefront control type WSS using silicon photonics technology. This consists of several arrayed waveguide gratings sharing a large slab waveguide, wavefront control waveguides and distributed Bragg reflectors. The structure, design method, operating principle, and scalability of the WSS are described and discussed. We designed and fabricated a 1 × 2 wavefront control type WSS using silicon waveguides. This has 16 channels with a channel spacing of 200 GHz. The chip size is 5 mm × 10 mm. The switching operation was achieved by shifting the phase of the light propagating in each wavefront control waveguide, and by controlling the propagation direction in the shared large slab waveguide. Our WSS has no crossing waveguide, so the loss and the variation in loss between channels were small compared to conventional waveguide type WSSs. The heater power required for switching was 183 mW per channel, and the average extinction ratios routed to Output#1 and Output#2 were 9.8 dB and 10.2 dB, respectively.

    Original languageEnglish
    Pages (from-to)13573-13589
    Number of pages17
    JournalOptics Express
    Volume26
    Issue number10
    DOIs
    Publication statusPublished - 2018 May 14

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Fingerprint Dive into the research topics of 'Integrated silicon photonic wavelength-selective switch using wavefront control waveguides'. Together they form a unique fingerprint.

  • Cite this

    Nakamura, F., Muramatsu, K., Suzuki, K., Tanizawa, K., Ohtsuka, M., Yokoyama, N., Matsumaro, K., Seki, M., Koshino, K., Ikeda, K., Namiki, S., Kawashima, H., & Tsuda, H. (2018). Integrated silicon photonic wavelength-selective switch using wavefront control waveguides. Optics Express, 26(10), 13573-13589. https://doi.org/10.1364/OE.26.013573