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

2 Citations (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
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

Publication series

Name2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017
Volume2017-January

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

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