Patent ID: 7065301
Filing Date: 2006-06-20
Classification: G02F,H04B

Abstract:
1. An arrangement for generating a high speed optical output signal modulated by an input data pattern, the arrangement comprising an electro-optic modulator responsive to an optical input signal and a modulating electrical input signal for generating the modulated optical output signal, the electro-optic modulator comprising a free carrier-based modulator utilizing changes in carrier density to generate the modulated optical output signal, the modulator including an equalizer/pre-emphasis module disposed at the electrical input to the electro-optic modulator, the equalizer/pre-emphasis module for inserting a pre-emphasis pulse of a predetermined magnitude and a predetermined duration into the modulating electrical input signal at each transition between a first data value and a second data value of the input data pattern, the inserted pre-emphasis pulses to accelerate free carrier modulation between the first data value and the second data value so as to extend the bandwidth of the electro-optic modulator without increasing the optical loss thereof.