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

    1 Citation (Scopus)

    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 publication2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1-2
    Number of pages2
    Volume2017-January
    ISBN (Electronic)9781509062904
    DOIs
    Publication statusPublished - 2017 Nov 22
    Event2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017 - Singapore, Singapore
    Duration: 2017 Jul 312017 Aug 4

    Other

    Other2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017
    CountrySingapore
    CitySingapore
    Period17/7/3117/8/4

    Keywords

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

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

    Fingerprint Dive into the research topics of 'Waveguide avalanche photodetector using quantum-dot superlattice for optical fiber communications'. Together they form a unique fingerprint.

  • 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 2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017 (Vol. 2017-January, pp. 1-2). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CLEOPR.2017.8118602