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

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

doi:10.1109/CLEOPR.2017.8118602

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 proceeding › Conference 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 language	English
Title of host publication	2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1-2
Number of pages	2
Volume	2017-January
ISBN (Electronic)	9781509062904
DOIs	https://doi.org/10.1109/CLEOPR.2017.8118602
Publication status	Published - 2017 Nov 22
Event	2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017 - Singapore, Singapore Duration: 2017 Jul 31 → 2017 Aug 4

Other

Other	2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017
Country	Singapore
City	Singapore
Period	17/7/31 → 17/8/4

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

Access to Document

10.1109/CLEOPR.2017.8118602

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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 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

Waveguide avalanche photodetector using quantum-dot superlattice for optical fiber communications. / Umezawa, Toshimasa; Akahane, Kouichi; Matsumoto, Atsushi; Yamamoto, Naokatsu; Kawanishi, Tetsuya.

2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017. p. 1-2.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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, Institute of Electrical and Electronics Engineers Inc., pp. 1-2, 2017 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2017, Singapore, Singapore, 17/7/31. https://doi.org/10.1109/CLEOPR.2017.8118602

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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.",

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