Patent ID: 6580532
Filing Date: 2003-06-17
Classification: H03L,H04B

Abstract:
An opto-electronic device, comprising:an oscillator to produce an oscillation signal at a carrier frequency, said oscillator responsive to a control signal to change a characteristic of said oscillation signal; and a noise suppression module coupled to said oscillator to produce said control signal in response to said oscillation signal, said noise suppression module including: an opto-electronic unit having an optical delay element and a photodetector to produce a first electrical signal indicative of said oscillation signal, and an electrical interferometer coupled to said opto-electronic unit to interfere said first electrical signal with a second electrical signal indicative of said oscillation signal to produce a first output signal representing a destructive interference and a second output signal representing a constructive interference; wherein said noise suppression module generates said control signal based on said first output signal from said electrical interferometer.