Loss budget expansion technique using gain-saturated SOA in WDM single-fiber loopback access networks

Masamichi Fujiwara, Hiro Suzuki, Naoto Yoshimoto, Katsumi Iwatsuki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This paper reduces the impact of backreflection in WDM single-fiber loopback access networks by using a gain-saturated semiconductor optical amplifier (SOA). The backreflection lights from two sources are taken into consideration, the continuous wave (CW) light at the central office (CO) (Reflection-I) and the modulated signal at the optical network unit (ONU) (Reflection-II). A SOA is placed at the ONU to reduce the intensity noise caused by Reflection-II. To investigate the effect by the proposed technique, an experiment creating multiple reflection points is conducted. The results show that a loss budget of 10 dB without SOA can be increased to 16 dB.

Original languageEnglish
Pages (from-to)72-77
Number of pages6
JournalOptical Fiber Technology
Volume13
Issue number1
DOIs
Publication statusPublished - 2007 Jan
Externally publishedYes

Keywords

  • Backreflection
  • Bidirectional transmission
  • Optical access network
  • Semiconductor optical amplifier
  • Single-fiber loopback transmission
  • WDM

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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