Title :
Fiber distribution for 80 compressed digital video channels using differential QPSK
Author :
Joyce, G.R. ; Olshansky, R. ; Gross, R.
Author_Institution :
GTE Lab. Inc., Waltham, MA, USA
Abstract :
Tests of the carrier-to-nonlinear-distortion (C/NLD) are performed on a Fabry-Perot (F-P) laser. For the C/NLD levels necessary for digital transmission on subcarriers, the distortion is dominated by clipping and matches that of expensive, highly linear distributed feedback (DFB) lasers. Using an F-P laser, the equivalent of 80 compressed MPEG digital video channels is transmitted on 20 subcarriers with 6 MHz channel spacing using differential quadrature-phase-shift-keyed (DQPSK) modulation and a simple delay-line demodulator
Keywords :
data compression; demodulators; differential phase shift keying; digital television; laser variables measurement; optical delay lines; optical fibre communication; optical modulation; quadrature phase shift keying; Fabry-Perot laser; carrier-to-nonlinear-distortion; channel spacing; clipping; delay-line demodulator; differential QPSK; digital video channels; subcarriers; Channel spacing; Distributed feedback devices; Fabry-Perot; Fiber lasers; Laser feedback; Laser noise; Optical fiber testing; Performance evaluation; Transform coding; Video compression;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397550
