Capacity bounding of coherence multiplexed local area networks due to interferometric noise

Author

Gupta, G.C. ; Legg, P.J. ; Uttamchandani, D. ; Andonovic, I.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

Volume

144

Issue

2

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

69

Lastpage

74

Abstract

Coherence multiplexing exploits the coherence properties of optical sources so that many users may be multiplexed onto a single physical channel giving a secure, asynchronous mode of transmission, free of central network control. In the paper, for the first time, the system performance limitations owing to the impact of interference from unwanted users is presented and the suitability of LED, single-mode Fabry-Perot laser and DFB sources are considered. It is concluded that the single-mode Fabry-Perot is preferred, offering readily achievable interferometer length tolerances and near complete RF rejection of interferometric noise at the receiver. However, interferometric noise still limits the network capacity: a linewidth of 1 nm permits 17 users to be simultaneously offered a single video channel with a BER<10^-9

Keywords

Mach-Zehnder interferometers; multiplexing; optical fibre LAN; optical noise; DFB sources; LED; capacity bounding; coherence multiplexed local area networks; interference; interferometer length tolerances; interferometric noise; near complete RF rejection; optical sources; receiver; secure asynchronous mode; single physical channel; single video channel; single-mode Fabry-Perot laser; system performance limitations;

fLanguage

English

Journal_Title

Optoelectronics, IEE Proceedings -

Publisher

iet

ISSN

1350-2433

Type

jour

DOI

10.1049/ip-opt:19970754

Filename

590324