InGaAsP/InP multi-mode interference photonic switches for monolithic photonic integrated circuits

Shuichi Nagai, Goh Morishima, Mikito Yagi, Katsuyuki Utaka

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    InGaAsP/InP semiconductor photonic switches using multi-mode interference (MIPS) are proposed for monolithic photonic integrated circuits. Changing the refractive indices of index-modulated regions located in the center of a multi-mode waveguide, controls its switching functions. It is predicted from calculations by an FD-TD (finite difference time domain) method that these devices can operate in various kinds of output schemes with typical device dimensions of about 8 μm width and 540 μm length. 1 × 2 InGaAsP/InP MIPS's with a high-mesa structure have been fabricated, and fundamental switching characteristics were measured. At the preliminary stage, switching was observed at 20mA current injection with about 37% extinction ratio. Switching efficiency and cross talk of the MIPS can be improved by optimizing the device dimensions and structure. The flexibility of setting the index-modulated regions suggests versatile operation of the MIPS, such as a photonic space division switch, a variable power splitter, or as an optical modulator.

    Original languageEnglish
    Pages (from-to)1269-1272
    Number of pages4
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume38
    Issue number2 B
    Publication statusPublished - 1999

    Fingerprint

    Optical switches
    Photonics
    integrated circuits
    Integrated circuits
    switches
    photonics
    interference
    Semiconductor switches
    Switching functions
    Light modulators
    Finite difference time domain method
    Refractive index
    mesas
    Waveguides
    Switches
    finite difference time domain method
    division
    modulators
    flexibility
    extinction

    Keywords

    • FD-TD
    • Multi-mode interference
    • Photonic integrated circuit
    • Photonic switch
    • Switching characteristics

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    InGaAsP/InP multi-mode interference photonic switches for monolithic photonic integrated circuits. / Nagai, Shuichi; Morishima, Goh; Yagi, Mikito; Utaka, Katsuyuki.

    In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 38, No. 2 B, 1999, p. 1269-1272.

    Research output: Contribution to journalArticle

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