Analogue optical transmission of 26 t.v. channels

Noise Properties of Opto-Electronic

“…From (1) we obtain the relation between the maximum achievable signal-to-noise ratio and the optical RF power (2) logM opl (F A1 )-logM opl (F A2 ) = 2 2 + x (logF A1 -logF A2 ) (5) in the example we mentioned a difference of 3.7 dB \vhich is in good agreement with the experiments. In this relation also derived from (1) M op ,(F A1 ) is the optimum multiplication factor with a preamplifier noise figure…”

Measurement of Nonlinear Distortions in Index- and Gain-Guiding GaAlAs Lasers

“…This technique of reducing the influence of nonlinearities by adjusting the carrier phases to give a minimized peak envelope amplitude of the composed sum waveform modulating the laser diode has been successfully used in our 26 TV channel transmission experiment [1]. As far as nonlinear distortions are concerned we can give some comments on the applications of a laser diode with certain linearity properties.…”

Recent FTTH Deployment Focused on Video Services of NTT

“…The Sub-Carrier Multiplexing (SCM) technique is well known as a method of multi-channel video signal transmission across optical networks [1]. When this method is used, multi-channel radio frequency (RF) signals are frequency-division multiplexed (FDM) like terrestrial TV broadcast systems or CATV systems, and these multiplexed signals are then transmitted by an optical carrier.…”