Reflection insensitive erbium-doped fiber amplifier

Author

Lester, Christian ; Schusler, Kim ; Pedersen, Bo ; Lumholt, Ole ; Bjarklev, Anders ; Povlsen, Jom H.

Author_Institution

NKT Res. Center A/S, Brondby, Denmark

Volume

7

Issue

3

fYear

1995

fDate

3/1/1995 12:00:00 AM

Firstpage

293

Lastpage

295

Abstract

It is experimentally and theoretically examined how the insertion of an isolator within the erbium-doped fiber influences the sensitivity of the fiber amplifier to external reflections. We examined the EDFA in various regions of saturation, and compared the configuration with the isolator to the traditional configuration without an isolator. The most significant improvements were found in the small-signal region, where the requirements to reflections may be relaxed by as much as 13 dB. This, together with an improved gain and noise figure, makes the configuration with the isolator very attractive for preamplifier applications.<>

Keywords

erbium; fibre lasers; laser noise; optical fibre communication; optical isolators; optical saturation; sensitivity; EDFA; external reflections; isolator; noise figure; preamplifier applications; reflection insensitive erbium-doped fiber amplifier; reflections; saturation; sensitivity; small-signal region; Erbium-doped fiber amplifier; Fresnel reflection; Insertion loss; Isolators; Low-noise amplifiers; Optical amplifiers; Optical fiber amplifiers; Optical fiber couplers; Optical reflection; Preamplifiers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.372750

Filename

372750