© The Institution of Electrical Engineers
An analysis of the optimum optical modulation index of laser transmitters in SCM systems is presented. Nonlinear distortion arising from overmodulation in a laser-limiter combination is studied. A generalised analysis, based on rectangular signal input power spectral density and broadband transmission, is given for the nonlinear noise spectral density. A computer algorithm is developed to generate the optimum modulation index which maximises the received CNR for SCM transmission.
References
-
-
1)
-
G.R. Joyce ,
V. Lanzisera ,
R. Olshansky
.
Improved sensitivity of 60 video channel FM-SCM receiver with semiconductor optical preamplifier.
Electron. Lett.
,
499 -
501
-
2)
-
L. Bickers ,
M.H. Reeve ,
P.A. Rosher ,
S.C. Fenning ,
A.J. Cooper ,
S.C. Methley ,
S. Hornung
.
The analog loop: A growing revolution in optical transmission.
J. Lightwave Technol.
,
1819 -
1824
-
3)
-
C.R. Cahn
.
Crosstalk due to finite limiting of frequency multiplexed signals.
Proc. IRE
,
53 -
59
-
4)
-
H.E. Rowe
.
Memoryless nonlinearities with Gaussian inputs: Elementary results.
Bell Syst. Tech. J.
,
7 ,
1519 -
1525
-
5)
-
J.S. Lee
.
Signal-to-crosstalk power ratio in smoothly limited multichannel FDM signals.
IEEE Trans.
,
1 ,
63 -
67
-
6)
-
A.A.M. Saleh
.
Fundamental limit on the number of channels in subcarrier-multiplexed lightwave CATV system.
Electron. Lett.
,
12 ,
776 -
777
-
7)
-
K. Alameh ,
R.A. Minasian
.
Tuned optical receiver for microwave SCM lightwave systems.
IEEE Trans.
-
8)
-
Olshansky, R., Lanzisera, V.A.: `Subcarrier multiplexed passive optical network for low-cost video distribution', Optical Fibre Commun. Conf., 1989, p. 57.
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