Title :
1 Gbit/s zero-IF DPSK coherent optical system using a single photodetector
Author :
Kahn, Joseph M. ; Habbab, I.M.I. ; Giles, C.R.
Author_Institution :
AT&T Bell Labs, Holmdel, NJ
fDate :
11/10/1988 12:00:00 AM
Abstract :
The authors have demonstrated zero-IF DPSK coherent optical detection at 1 Gbit/s without the use of multiple receivers and special optical couplers. To achieve this, they have added a 1 GHz sinusoidal phase switching signal to the NRZ phase modulator drive. The measured sensitivity of -37.5 dBm, compared with a theoretical estimate of -54.8 dBm, is impaired mainly by nonideal electronic circuits
Keywords :
optical communication equipment; optical modulation; phase shift keying; photodetectors; 1 GHz; 1 Gbit/s; NRZ phase modulator drive; photodetector; sensitivity; sinusoidal phase switching signal; zero-IF DPSK coherent optical detection;
Journal_Title :
Electronics Letters
