4 ×4 InAlGaAs/InAlAs optical-switch fabric by cascading mach-zehnder interferometer-type optical switches with low-power and low-polarization- dependent operation

Yuta Ueda, Noriaki Koyama, Kazuki Kambayashi, Shinji Fujimoto, Katsuyuki Utaka, Takashi Shiota, Takeshi Kitatani

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    High-speed optical switches are essential devices to construct next-generation optical networks. We have studied 2 × 2 InAlGaAs/InAlAs hybrid-waveguide-type Mach-Zehnder interferometer-type optical switches and demonstrated low-polarization-dependent switching operation with crosstalks of less than -20 dB, injection currents of about 5 mA, and response times of about 3 ns. In this letter, our conventional 2 × 2 optical switch was extended to a 4 × 4 optical-switch fabric by a cascading approach. As a result, fundamental switching operation was confirmed with low power consumption and low polarization dependence.

    Original languageEnglish
    Article number6151035
    Pages (from-to)757-759
    Number of pages3
    JournalIEEE Photonics Technology Letters
    Volume24
    Issue number9
    DOIs
    Publication statusPublished - 2012

    Fingerprint

    Mach-Zehnder interferometers
    Optical switches
    switches
    Polarization
    polarization
    Next generation networks
    Crosstalk
    Fiber optic networks
    crosstalk
    Waveguides
    Electric power utilization
    high speed
    injection
    waveguides

    Keywords

    • Cascade connection
    • InAlGaAs/InAlAs compound semiconductor
    • Mach-Zehnder (MZ) interferometer photonic switch
    • multimode-interference (MMI) coupler
    • polarization independence

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Atomic and Molecular Physics, and Optics
    • Electronic, Optical and Magnetic Materials

    Cite this

    4 ×4 InAlGaAs/InAlAs optical-switch fabric by cascading mach-zehnder interferometer-type optical switches with low-power and low-polarization- dependent operation. / Ueda, Yuta; Koyama, Noriaki; Kambayashi, Kazuki; Fujimoto, Shinji; Utaka, Katsuyuki; Shiota, Takashi; Kitatani, Takeshi.

    In: IEEE Photonics Technology Letters, Vol. 24, No. 9, 6151035, 2012, p. 757-759.

    Research output: Contribution to journalArticle

    Ueda, Yuta ; Koyama, Noriaki ; Kambayashi, Kazuki ; Fujimoto, Shinji ; Utaka, Katsuyuki ; Shiota, Takashi ; Kitatani, Takeshi. / 4 ×4 InAlGaAs/InAlAs optical-switch fabric by cascading mach-zehnder interferometer-type optical switches with low-power and low-polarization- dependent operation. In: IEEE Photonics Technology Letters. 2012 ; Vol. 24, No. 9. pp. 757-759.
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    AU - Kambayashi, Kazuki

    AU - Fujimoto, Shinji

    AU - Utaka, Katsuyuki

    AU - Shiota, Takashi

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