Elimination of signal distortion and crosstalk from carrier density changes in the shared semiconductor amplifier of multifrequency signal sources

Author

Doerr, C.R. ; Joyner, C.H. ; Zirngibl, M. ; Stulz, L.W. ; Presby, H.M.

Author_Institution

Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA

Volume

7

Issue

10

fYear

1995

Firstpage

1131

Lastpage

1133

Abstract

The signals from multifrequency sources that utilize a shared semiconductor optical amplifier often exhibit distortion and crosstalk due to carrier density changes in the shared amplifier. We propose a technique that eliminates the signal distortion and crosstalk by keeping the carrier density in the shared amplifier constant via feedforward of the electrical drive signals. We demonstrate the technique using a waveguide grating router multifrequency laser.<>

Keywords

carrier density; diffraction gratings; light sources; optical communication equipment; optical crosstalk; optical noise; semiconductor lasers; waveguide lasers; carrier density changes; crosstalk; electrical drive signals; feedforward; multifrequency signal sources; shared semiconductor amplifier signal sources; shared semiconductor optical amplifier; signal distortion; waveguide grating router multifrequency laser; Charge carrier density; Crosstalk; Drives; Gratings; Laser noise; Optical amplifiers; Optical distortion; Optical waveguides; Semiconductor optical amplifiers; Waveguide lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.466566

Filename

466566