Title :
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
fDate :
4/1/1995 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
