A High-Efficiency 50 GHz InGaAs Multimode Waveguide Photodetector

Kazutoshi Kato, Susumu Hata, Kenji Kawano, Junichi Yoshida, Atsuo Kozen

Research output: Contribution to journalArticle

115 Citations (Scopus)

Abstract

We propose a new type of side-illuminated pin photodetector with a multimode waveguide structure. Numerical and experimental results show that higher-order mode lights greatly enhance the coupling efficiency between the waveguide photodetector (WGPD) and a fiber, which leads to a high external quantum efficiency. Furthermore, the multimode WGPD has the major advantage that the external quantum efficiency and bandwidth can be derived independently of each other because the multimode waveguide structure can be designed without deteriorating electrical properties. The fabricated WGPD has an external quantum efficiency of 56% without AR coating and 68% with AR coating and an electrical 3 dB frequency greater than 50 GHz at a 1.55 μm wavelength.

Original languageEnglish
Pages (from-to)2728-2735
Number of pages8
JournalIEEE Journal of Quantum Electronics
Volume28
Issue number12
DOIs
Publication statusPublished - Jan 1 1992

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Photodetectors
photometers
Waveguides
waveguides
Quantum efficiency
quantum efficiency
coatings
Coatings
luminaires
Electric properties
electrical properties
bandwidth
Bandwidth
Wavelength
fibers
Fibers
wavelengths

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

A High-Efficiency 50 GHz InGaAs Multimode Waveguide Photodetector. / Kato, Kazutoshi; Hata, Susumu; Kawano, Kenji; Yoshida, Junichi; Kozen, Atsuo.

In: IEEE Journal of Quantum Electronics, Vol. 28, No. 12, 01.01.1992, p. 2728-2735.

Research output: Contribution to journalArticle

Kato, Kazutoshi ; Hata, Susumu ; Kawano, Kenji ; Yoshida, Junichi ; Kozen, Atsuo. / A High-Efficiency 50 GHz InGaAs Multimode Waveguide Photodetector. In: IEEE Journal of Quantum Electronics. 1992 ; Vol. 28, No. 12. pp. 2728-2735.
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