High-responsivity and low-operation-voltage edge-illuminated refracting-facet photodiodes with large alignment tolerance for single-mode fiber

Hideki Fukano, Atsuo Kozen, Kazutoshi Kato, Osaake Nakajima

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We demonstrate a novel edge-illuminated refracting-facet photodiode (RFPD), in which the incident light parallel to the up-side surface is refracted at an angled facet and absorbed in a thin absorption layer. Although the absorption layer is thin, the absorption length is effectively increased by making the light transit at a certain angle to the absorption layer, resulting in an increase in internal quantum efficiency. The fabricated RFPD's with an absorption layer thickness of 1.5 μm have a responsivity as high as 0.95 A/W even at a bias voltage of 0.5 V for a flat-ended single-mode fiber. The 1-dB-down misalignment tolerances for vertical and horizontal directions are as large as 9.5 and 33 μm, respectively. The 3-dB bandwidth of more than 6 GHz is obtained.

Original languageEnglish
Pages (from-to)894-899
Number of pages6
JournalJournal of Lightwave Technology
Volume15
Issue number5
DOIs
Publication statusPublished - May 1997
Externally publishedYes

Fingerprint

Single mode fibers
Photodiodes
photodiodes
flat surfaces
alignment
fibers
Electric potential
electric potential
Bias voltage
Quantum efficiency
Bandwidth
transit
misalignment
quantum efficiency
bandwidth

ASJC Scopus subject areas

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

Cite this

High-responsivity and low-operation-voltage edge-illuminated refracting-facet photodiodes with large alignment tolerance for single-mode fiber. / Fukano, Hideki; Kozen, Atsuo; Kato, Kazutoshi; Nakajima, Osaake.

In: Journal of Lightwave Technology, Vol. 15, No. 5, 05.1997, p. 894-899.

Research output: Contribution to journalArticle

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