Densely spaced FDM coherent optical star network using monolithic widely frequency-tunable lasers

Author

Glance, B. ; Koch, T.L. ; Scaramucci, O. ; Reichmann, K.C. ; Koren, U. ; Burrus, C.A.

Author_Institution

AT&T Bell Labs., Holmdel, NJ, USA

Volume

25

Issue

10

fYear

1989

fDate

5/11/1989 12:00:00 AM

Firstpage

672

Lastpage

673

Abstract

The authors present the results obtained with a densely spaced FDM coherent optical network using monolithic widely frequency-tunable lasers. The system consists of four channels transmitted around 1.53 mu m, FSK-modulated at 200 Mbit/s and spaced by 2.45 GHz. A 16*16 fibre star coupler combines the four optical signals. Demultiplexing is performed by a heterodyne FM receiver at an IF frequency of 850 MHz. The minimum received optical power needed to obtain a BER of 10^-9 is -55.5 dBm or 109 photons/bit, which is 3.4 dB from the shot noise limit.

Keywords

broadband networks; digital communication systems; error statistics; frequency division multiplexing; frequency shift keying; laser tuning; optical fibres; optical links; optical modulation; semiconductor junction lasers; 1.53 micron; 200 Mbit/s; 850 MHz; BER; FDM; FSK-modulated; IF frequency; bit error rate; coherent optical star network; demultiplexing; densely spaced configuration; digital transmission; fibre star coupler; four channel system; frequency shift keying; frequency-tunable lasers; heterodyne FM receiver; optical fibre links; semiconductor lasers;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19890455

Filename

91759