Title :
Influence of adjacent channel interference on the frequency-modulated WDM optical communication system
Author :
Bhattacharya, Madhumita ; Chattopadhyay, Taraprasad
Author_Institution :
Dept. of Phys., Visva-Bharati Univ., Santiniketan, India
fDate :
12/1/1999 12:00:00 AM
Abstract :
The effect of adjacent channel interference on the frequency modulated wavelength division multiplexing (FM-WDM) optical communication system is analyzed in this paper. This system uses injection-locked optical discriminator at the output for the demodulation of FM channels. Adjacent channel interference results in crosstalk in the FM-WDM communication system which has been calculated. Dependence of crosstalk on the channel spacing, received signal power in a particular channel, and linewidth enhancement factor of the slave laser incorporated in the optical discriminator has been numerically investigated. The injection-locked discriminator has a typical output crosstalk level of -50 dB for a channel spacing of 100 GHz with optical injection level of -30 dB into the slave laser and is a suitable subsystem to be used in FM-WDM communication system
Keywords :
adjacent channel interference; demodulation; frequency modulation; optical crosstalk; optical fibre communication; wavelength division multiplexing; FM channel demodulation output; FM-WDM communication system; adjacent channel interference; channel spacing; crosstalk; frequency-modulated WDM optical communication system; injection-locked discriminator; injection-locked optical discriminator; linewidth enhancement; output crosstalk level; received signal power; slave laser; Channel spacing; Demodulation; Frequency modulation; Interchannel interference; Optical crosstalk; Optical fiber communication; Optical frequency conversion; Optical modulation; Power lasers; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
