Effect of Mach-Zehnder modulator DC extinction ratio on residual chirp-induced dispersion in 10-Gb/s binary and AM-PSK duobinary lightwave systems

Author

Walklin, Sheldon ; Conradi, Jan

Author_Institution

TRLabs, Edmonton, Alta., Canada

Volume

9

Issue

10

fYear

1997

Firstpage

1400

Lastpage

1402

Abstract

It is shown through numerical simulation that residual frequency chirping in lithium niobate external modulators, which accompanies devices with a finite-optical extinction ratio, always degrades the performance of lightwave systems that use optical AM-PSK duobinary signaling. This is unlike binary systems which will exhibit either an improvement or degradation, depending on the polarity of residual chirp.

Keywords

amplitude modulation; chirp modulation; electro-optical modulation; optical fibre dispersion; phase shift keying; telecommunication signalling; 10 Gbit/s; AM-PSK duobinary lightwave systems; Gb/s binary lightwave systems; Mach-Zehnder modulator DC extinction ratio; finite-optical extinction ratio; lithium niobate external modulators; numerical simulation; residual chirp polarity; residual chirp-induced dispersion; residual frequency chirping; Chirp modulation; Dispersion; Extinction ratio; Fiber nonlinear optics; Frequency; Nonlinear optics; Optical modulation; Optical receivers; Optical sensors; Optical transmitters;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.623276

Filename

623276