Waveguide avalanche photodetector using quantum-dot superlattice for optical fiber communications

Toshimasa Umezawa, Kouichi Akahane, Atsushi Matsumoto, Naokatsu Yamamoto, Tetsuya Kawanishi

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We report a 1.5-μm high-responsivity waveguide quantum dot photodetector with an avalanche multiplication effect and high frequency response. With two different QD layer conditions, the responsivity and avalanche multiplication were compared and discussed. The high responsivity of 0.58 A/W and avalanche multiplication factor of around 10 could be obtained. Then, it was inferred that the impact ionization process in the quantum dot superlattice would be created in the depletion layer region, not in the InGaAlAs SL region.

    Original languageEnglish
    Title of host publicationConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017
    PublisherOSA - The Optical Society
    VolumePart F122-CLEOPR 2017
    ISBN (Electronic)9781557528209
    Publication statusPublished - 2017 Jan 1
    EventConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 - Singapore, Singapore
    Duration: 2017 Jul 312017 Aug 4

    Other

    OtherConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017
    CountrySingapore
    CitySingapore
    Period17/7/3117/8/4

    Keywords

    • Avalanche multiplication
    • Frequency response
    • High density quantum dot
    • Photodetector

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Mechanics of Materials

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  • Cite this

    Umezawa, T., Akahane, K., Matsumoto, A., Yamamoto, N., & Kawanishi, T. (2017). Waveguide avalanche photodetector using quantum-dot superlattice for optical fiber communications. In Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 (Vol. Part F122-CLEOPR 2017). [s0963] OSA - The Optical Society.