A novel technique for measuring group velocity dispersion of an installed ultralong fiber by using erbium-doped fiber amplifiers

Masataka Nakazawa, Akio Sahara, Takeshi Imai, Takashi Yamamoto, Eiichi Yamada, Yasuo Kimura

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A new technique is presented for measuring the group velocity dispersion (GVD) of optical fibers. It makes it possible to measure the GVD of an already installed ultralong dispersion-shifted fiber. The method is based on phase rotation measurement, but it includes erbium amplifiers and an optical circulator or a 100% reflector. This allows round-trip propagation of the modulated signal and the GVD was successfully measured at one terminal. The maximum measurable length is as long as 125 km.

Original languageEnglish
Pages (from-to)L1167-L1169
JournalJapanese journal of applied physics
Volume34
Issue number9
DOIs
Publication statusPublished - 1995 Sep
Externally publishedYes

Keywords

  • Dispersion measurement
  • Erbium-doped fiber amplifier
  • Optical circulator
  • Optical fibers
  • Optical soliton
  • Phase delay

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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