Tunable coherent optical transversal EDFA gain equalization

Author

Khaleghi, F. ; Kavehrad, Mohsen ; Barnard, C.

Author_Institution

Dept. of Electr. Eng., Ottawa Univ., Ont., Canada

Volume

13

Issue

4

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

581

Lastpage

587

Abstract

In this paper, we propose a fiber amplifier gain equalizer using a coherent optical transversal filter. The gain equalizer is tunable and has a bandwidth in the order of 30 nm. We also study the effects of different parameters such as input signal power pattern and the input pump power on the gain profile of the amplifier. The results show that, when the input signal power pattern changes, the amplifier does not maintain its gain profile. The gain profile has to be maintained in order to make the gain equalization effective. We show that, the pump input power can be adjusted so that the changes in the gain profile are compensated for. The gain profile varies quite slowly, hence compensation is feasible. As an example, we discuss the design of a gain equalizer for a system consisting of seven wavelength channels

Keywords

compensation; equalisers; erbium; fibre lasers; optical communication equipment; optical fibre filters; optical pumping; tuning; bandwidth; coherent optical transversal filter; fiber amplifier gain equalizer; gain equalization; gain equalizer; gain profile; input pump power; input signal power pattern; input signal power pattern change; pump input power; tunable; tunable coherent optical transversal EDFA gain equalization; wavelength channels; Equalizers; Erbium-doped fiber amplifier; Optical amplifiers; Optical fiber amplifiers; Optical filters; Optical pumping; Power amplifiers; Semiconductor optical amplifiers; Stimulated emission; Transversal filters;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.372469

Filename

372469