Fiber optic subcarrier transmission systems using coherence multiplexing techniques for broad-band distribution networks

Hideyuki Uehara, Iwao Sasase, Mitsuo Yokoyama

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Fiber optic subcarrier transmission system using coherence multiplexing techniques for broad-band distribution networks is proposed. This system makes it possible to improve the laser linewidth requirement and also to eliminate the effect of intermodulation distortion (IMD) which is serious problem in subcarrier multiplexed (SCM) system. In the proposed system, the frequency difference, /o, between the reference light and the signal light makes it possible to generate the broadband FM signal after photodetecting. Thus, an increase in the modulation index provides a corresponding increase in receiver sensitivity. We analyze the fundamental performance of the proposed system and derive the signal-to-noise ratio (SNR) at the output of FM demodulator by taking the threshold effect and spike noise into account. The proposed system can achieve the total capacity in excess of 10GHz, and thus it is attractive for multichannel broad-band distribution networks.

Original languageEnglish
Pages (from-to)1027-1034
Number of pages8
JournalIEICE Transactions on Communications
VolumeE80-B
Issue number7
Publication statusPublished - 1997 Jan 1

Keywords

  • Broad-band distribution network
  • Coherence multiplexing
  • Fm demodulation
  • IMD
  • SCM

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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