DocumentCode :
833381
Title :
Novel carrier and clock-recovery circuit for multigigabit/second lightwave systems
Author :
Hill, Paul M. ; Olshansky, Robert ; Abdollahian, Mehdy
Author_Institution :
GTE Lab. Inc., Waltham, MA, USA
Volume :
5
Issue :
1
fYear :
1993
Firstpage :
96
Lastpage :
98
Abstract :
The first use of a clock pilot-tone to simultaneously recover the carrier and clock signals in a suppressed carrier baseband BPSK optical transmission system was demonstrated. Three signals are obtained from the received pilot-tone, including the reference carrier used to synchronously demodulate the BPSK data, a reference to establish automatic frequency control, and a pattern-independent clock. The pilot-tone method for simultaneous signal extraction was demonstrated for the first time in a baseband multigigabit/second coherent heterodyne detection lightwave system. The recovered clock had a measured rms jitter of less than 1.5 degrees and a spectral width of +or-5 Hz.<>
Keywords :
automatic frequency control; clocks; optical links; optical modulation; phase shift keying; automatic frequency control; carrier recovery circuit; clock pilot-tone; clock-recovery circuit; coherent heterodyne detection lightwave system; demodulation; measured rms jitter; multigigabit/second lightwave systems; optical receivers; pattern-independent clock; received pilot-tone; reference carrier; simultaneous signal extraction; spectral width; suppressed carrier baseband BPSK optical transmission system; synchronously demodulate; Automatic frequency control; Baseband; Binary phase shift keying; Circuits; Clocks; Directional couplers; Optical filters; Optical mixing; Optical receivers; Optical transmitters;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/68.185072
Filename :
185072
Link To Document :
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