High efficiency optical coupler for a small photo acceptance area photodiode used in the high speed plastic optical fiber communication

Yoshinori Matsumoto, Akimichi Nakazono, Taisuke Kitahara, Yasuhiro Koike

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A high efficiency optical coupler has been developed for high speed plastic optical fiber communication. The coupler was designed for a small photo acceptance area photodiode based on the shape of compound parabolic concentrator. The theoretical efficiency of the coupler for graded index plastic optical fiber (GI-POF) was simulated with ray trace simulation, and the coupling loss was calculated less than 0.4 dB. The coupler was batch fabricated in a glass substrate using sand blast technique. The reflection layer of reflectance 90% was formed by Gold/Nickel mirror plating method. The coupler was bonded with a custom designed high speed PIN photodiode. The photocurrent was 20% higher than the current of a ball lens type PIN photodiode. The cut-off frequency was over 1 Gbps at reverse bias of 1.5 V.

Original languageEnglish
Pages (from-to)318-322
Number of pages5
JournalSensors and Actuators, A: Physical
Volume97
Issue number98
DOIs
Publication statusPublished - 2002 Apr 1

Keywords

  • Compound parabolic concentrator
  • Mirror plating
  • Optical coupler
  • Photodiode
  • Plastic optical fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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