Polarization-independent low-crosstalk operation of InAlGaAs-InAlAs mach-zehnder interferometer-type photonic switch with hybrid waveguide structure

Yuta Ueda, Shinya Nakamura, Shinji Fujimoto, Hiroto Yamada, Katsuyuki Utaka, Takashi Shiota, Takeshi Kitatani

    Research output: Contribution to journalArticle

    16 Citations (Scopus)

    Abstract

    In this letter, we demonstrated a Mach-Zehnder interferometer-type photonic switch using multimode interference (MMI) couplers with InAlGaAs-InAlAs compound semiconductor materials. A hybrid-waveguide structure with different etching depths was adopted for MMI couplers and other parts of the waveguides for polarization-independent operation. As a result, low-crosstalk switching operation of less than -20 dB was confirmed regardless of polarizations of an input light. Switching currents were, respectively, 5.25 and 4.75 mA for TE and TM modes of the input light. High-speed switching operation with about 3-ns transition time was also confirmed.

    Original languageEnglish
    Pages (from-to)1118-1120
    Number of pages3
    JournalIEEE Photonics Technology Letters
    Volume21
    Issue number16
    DOIs
    Publication statusPublished - 2009 Aug 15

    Fingerprint

    Mach-Zehnder interferometers
    Optical switches
    Crosstalk
    crosstalk
    Waveguides
    switches
    photonics
    Polarization
    waveguides
    couplers
    polarization
    interference
    Etching
    high speed
    etching
    Semiconductor materials

    Keywords

    • 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

    Polarization-independent low-crosstalk operation of InAlGaAs-InAlAs mach-zehnder interferometer-type photonic switch with hybrid waveguide structure. / Ueda, Yuta; Nakamura, Shinya; Fujimoto, Shinji; Yamada, Hiroto; Utaka, Katsuyuki; Shiota, Takashi; Kitatani, Takeshi.

    In: IEEE Photonics Technology Letters, Vol. 21, No. 16, 15.08.2009, p. 1118-1120.

    Research output: Contribution to journalArticle

    Ueda, Yuta ; Nakamura, Shinya ; Fujimoto, Shinji ; Yamada, Hiroto ; Utaka, Katsuyuki ; Shiota, Takashi ; Kitatani, Takeshi. / Polarization-independent low-crosstalk operation of InAlGaAs-InAlAs mach-zehnder interferometer-type photonic switch with hybrid waveguide structure. In: IEEE Photonics Technology Letters. 2009 ; Vol. 21, No. 16. pp. 1118-1120.
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    abstract = "In this letter, we demonstrated a Mach-Zehnder interferometer-type photonic switch using multimode interference (MMI) couplers with InAlGaAs-InAlAs compound semiconductor materials. A hybrid-waveguide structure with different etching depths was adopted for MMI couplers and other parts of the waveguides for polarization-independent operation. As a result, low-crosstalk switching operation of less than -20 dB was confirmed regardless of polarizations of an input light. Switching currents were, respectively, 5.25 and 4.75 mA for TE and TM modes of the input light. High-speed switching operation with about 3-ns transition time was also confirmed.",
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    AU - Ueda, Yuta

    AU - Nakamura, Shinya

    AU - Fujimoto, Shinji

    AU - Yamada, Hiroto

    AU - Utaka, Katsuyuki

    AU - Shiota, Takashi

    AU - Kitatani, Takeshi

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    AB - In this letter, we demonstrated a Mach-Zehnder interferometer-type photonic switch using multimode interference (MMI) couplers with InAlGaAs-InAlAs compound semiconductor materials. A hybrid-waveguide structure with different etching depths was adopted for MMI couplers and other parts of the waveguides for polarization-independent operation. As a result, low-crosstalk switching operation of less than -20 dB was confirmed regardless of polarizations of an input light. Switching currents were, respectively, 5.25 and 4.75 mA for TE and TM modes of the input light. High-speed switching operation with about 3-ns transition time was also confirmed.

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