Operation of a frequency shift keyed subcarrier multiple-access system for a passive optical network in the presence of strong adjacent channel interference

Author

Feldman, R.D. ; Wood, T.H. ; Austin, R.F.

Author_Institution

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

Volume

7

Issue

4

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

427

Lastpage

430

Abstract

We use low-pass filtering of baseband data to limit the transmitted RF bandwidth and permit operation of a sub-carrier channel in the presence of two adjacent channels, each with 17 dB higher optical power than the measured channel. Each channel carries 3 Mb/s, and the channel spacing is 6 MHz. Preliminary measurements indicate that an increase in channel spacing to approximately 7.5 MHz will increase the dynamic range beyond 20 dB.<>

Keywords

adjacent channel interference; frequency shift keying; low-pass filters; multi-access systems; optical fibre networks; optical modulation; subcarrier multiplexing; 3 Mbit/s; adjacent channels; baseband data; channel spacing; dynamic range; frequency shift keyed; higher optical power; low-pass filtering; passive optical network; strong adjacent channel interference; sub-carrier channel; subcarrier multiple-access system; transmitted RF bandwidth; Bandwidth; Baseband; Channel spacing; Dynamic range; Filtering; Frequency shift keying; Low pass filters; Optical filters; Power measurement; Radio frequency;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.376824

Filename

376824