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
ISBN (Print)9781509062904
Publication statusPublished - 2017
EventConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 - Singapore, Singapore
Duration: 2017 Jul 312017 Aug 4

Publication series

NameOptics InfoBase Conference Papers
VolumePart F122-CLEOPR 2017

Other

OtherConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017
Country/TerritorySingapore
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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