Effect of line coding on heterodyne FSK optical systems with nonuniform laser FM response

Author

Majumder, S.P. ; Gangopadhyay, R. ; Prati, G.

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Eng. & Technol., Dhaka, Bangladesh

Volume

141

Issue

3

fYear

1994

fDate

6/1/1994 12:00:00 AM

Firstpage

200

Lastpage

208

Abstract

A simple analytical approach for evaluating the system performance due to the combined effects of receiver noise, laser phase noise and laser nonuniform FM response in wide-deviation heterodyne optical FSK system with envelope detection is presented. With this approach, the relative effectiveness of several linecoding schemes, namely alternate mark inversion (AMI), Manchester coding (MC) and delay modulation (DM), in counteracting the pattern-dependent performance degradation due to nonflat FM response has been quantitatively assessed. Theoretical results and simulations show that performance of linecoded systems are within 0.7 dB at bit error probability of 10^-9 from the random NRZ-FSK system with flat FM response

Keywords

demodulation; encoding; frequency shift keying; optical links; optical modulation; Manchester coding; alternate mark inversion; bit error probability; delay modulation; envelope detection; heterodyne FSK optical systems; laser phase noise; line coding; nonuniform laser FM response; pattern-dependent performance degradation; random NRZ-FSK system; receiver noise; simulations;

fLanguage

English

Journal_Title

Optoelectronics, IEE Proceedings -

Publisher

iet

ISSN

1350-2433

Type

jour

DOI

10.1049/ip-opt:19941139

Filename

305884