High-power Er-Yb-doped fiber amplifier with multichannel gain flatness within 0.2 dB over 14 nm

Author

Park, Namkyoo ; Wysocki, Paul ; Pedrazzani, Renee ; Grubb, Steve ; DiGiovanni, David ; Walker, Ken

Author_Institution

Lucent Technol., Bell Labs. Innovations, Murray Hill, NJ, USA

Volume

8

Issue

9

fYear

1996

Firstpage

1148

Lastpage

1150

Abstract

A high-power Er-Yb fiber amplifier for WDM applications has been constructed using a matched mid-stage gain shaping filter. Using precise measurements and careful design considerations, excellent gain flatness, with less than 0.2-dB variation, was obtained over a 14-nm spectral bandwidth. By simply adjusting the pump power to the amplifier, it was possible to maintain the flattened amplifier gain shape over a wide input signal power range from -11 dBm to 1 dBm. A low external noise figure of 5.2 dB at 1-dBm signal input and a high-output power up to 24.6 dBm has been measured.

Keywords

erbium; fibre lasers; multiplexing equipment; optical communication equipment; optical pumping; power amplifiers; wavelength division multiplexing; ytterbium; WDM applications; dBm signal input; design considerations; flattened amplifier gain shape; gain flatness; high-output power; high-power Er-Yb-doped fiber amplifier; low external noise figure; matched mid-stage gain shaping filter; multichannel gain flatness; nm spectral bandwidth; precise measurements; pump power; wide input signal power range; Bandwidth; Gain measurement; High power amplifiers; Matched filters; Noise figure; Noise measurement; Power amplifiers; Power measurement; Shape; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.531818

Filename

531818