Gain-distribution measurements along an ultralong erbiumdoped fiber amplifier using optical-time-domain reflectometry

Masataka Nakazawa, Yasuo Kimura, Kazunori Suzuki

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Optical gain changes as a function of distance along a long distributed erbium-doped fiber amplifier were measured, using optical-time-domain reflectometry. Two dispersion-shifted erbium-doped fibers with fiber lengths of 9–19 km and doping concentrations of 0.5 (0.5 × 10−4 wt %) and 0.1 (0.1 × 10−4 wt %) parts in 106 have been tested, using 1.48-μm InGaAsP laser diode and 0.98-μm Ti:sapphire laser pump sources. It is shown how local gain and loss change with an increase in pump power.

Original languageEnglish
Pages (from-to)1200-1202
Number of pages3
JournalOptics Letters
Volume15
Issue number21
DOIs
Publication statusPublished - 1990 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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