Title :
Phase-locked-loop analysis for pilot carrier coherent optical receivers
Author :
Hodgkinson, T.G.
Author_Institution :
British Telecom Research Laboratories, Ipswich, UK
Abstract :
The optimum phase-locked-loop bandwidth which exists when shot and phase noise sources are present at the receiver is derived. This is then used to show beat linewidth to bitrate ratios smaller than 0.05% are needed for PSK homodyne/heterodyne systems.
Keywords :
optical communication; phase shift keying; phase-locked loops; random noise; PSK homodyne/heterodyne systems; beat linewidth; bit-rate ratios; optimum phase-locked-loop bandwidth; phase noise sources; pilot carrier coherent optical receivers; shot noise;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850848
