Title :
Analytical analysis of IF-penalties for different FSK and CPFSK detection schemes
Author :
Hooijmans, Pieter W. ; Tomesen, Mark T.
Author_Institution :
Philips Res. Lab., Eindhoven, Netherlands
fDate :
5/1/1992 12:00:00 AM
Abstract :
Due to the nonnegligible laser linewidth in coherent optical systems, IF bandwidths larger than the Nyquist signaling rate are required. This causes additional sensitivity penalties, which are evaluated for three types of coherent optical FSK (frequency-shift-keying) detection; two-filter-, delay-line discriminator-, and phase-diversity detection. Sensitivity as a function of the relative IF-bandwidth is given in a fully analytical form and confirmed by experimental measurements
Keywords :
frequency shift keying; optical links; optical modulation; photodetectors; sensitivity; spectral line breadth; CPFSK detection schemes; FSK detection; IF bandwidths; IF-penalties; Nyquist signaling rate; coherent optical FSK; coherent optical systems; delay-line discriminator-detection; frequency-shift-keying; nonnegligible laser linewidth; phase-diversity detection; photodetection; sensitivity penalties; two-filter-detection; Bandwidth; Bit error rate; Bit rate; Delay; Frequency shift keying; Noise generators; Optical filters; Optical sensors; Phase detection; Signal to noise ratio;
Journal_Title :
Lightwave Technology, Journal of
