Experimental verification of new EDFA gain-tilt distortion theory

Author

Hansen, Steffen Lomholt ; Andreasen, Svend Bank ; Thorsen, Per ; Dybdal, Kristen

Author_Institution

Res. & Dev., Jydsk Telefon, Tranbjerg, Denmark

Volume

5

Issue

12

fYear

1993

Firstpage

1433

Lastpage

1435

Abstract

Measurement of composite second-order distortion (CSO) for a 28-channel AM-TV system verifies a recent theory on erbium-doped fiber amplifier (EDFA) gain-tilt distortion. The fundamental difference between locked-inversion and continuous-wave (CW) gain-till is explained experimentally and theoretically. Good agreement between simulated and measured locked-inversion gain curves are found. The results confirm that gain-tilt distortion in optical AM-TV systems can be reduced to acceptable levels by proper EDFA design. The measurements indicate that EDFA-induced CSO cannot be used to compensate CSO generated by other mechanisms over the whole frequency band in multichannel systems.<>

Keywords

erbium; fibre lasers; laser mode locking; laser theory; 28-channel AM-TV system; EDFA gain-tilt distortion theory; Er-doped fiber amplifier; composite second-order distortion; continuous-wave gain-tilt; locked-inversion; locked-inversion gain curves; multichannel systems; Chirp; Distortion measurement; Erbium-doped fiber amplifier; Frequency; Gain measurement; Laser noise; Optical distortion; Optical modulation; Optical pumping; Stimulated emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.262565

Filename

262565