Optimum optical modulation index of laser transmitters in scm systems

2 August 1990

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 26 (16) , 1273-1275
https://doi.org/10.1049/el:19900820

Abstract

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.

Keywords

LASER-LIMITER COMBINATION
SUBCARRIER MULTIPLEXING
SCM SYSTEMS
PASSIVE OPTICAL NETWORK
CARRIER NOISE RATIO
RECTANGULAR SIGNAL INPUT POWER SPECTRAL DENSITY
GENERALISED ANALYSIS
RECEIVED CNR MAXIMISATION
OPTIMUM OPTICAL MODULATION INDEX
LASER TRANSMITTERS
SCM TRANSMISSION
BROADBAND TRANSMISSION
OVERMODULATION
COMPUTER ALGORITHM
NONLINEAR NOISE SPECTRAL DENSITY

This publication has 0 references indexed in Scilit: