OPTO-ELECTRONIC TECHNIQUES FOR REDUCING PHASE NOISE IN A CARRIER SIGNAL BY CARRIER SUPPRESSION

摘要

An oscillator (101) for producing a carrier signal and having an opto-electronic noise suppression module (102)connected between an oscillator output coupler (104) and a control input (164)of the oscillator (101). The opto-electronic noisesuppression module (102) includes an opto-electronic unit (110) for producinga first electrical signal (121) indicative of a delayedversion of the carrier signal. An electrical interferometer (120) receives thefirst electrical signal (121) and a second electrical signalindicative of the carrier signal to produce two signals which are combined ina mixer (144) to produce a control signal (152) for theoscillator.