System for the generation of modulated optical signals

Details System for the generation of modulated optical signals System for the generation of modulated optical signals

H - Electricity

01

S

H01S 5/40 (2006.01) H01S 5/06 (2006.01) H01S 5/062 (2006.01) H01S 5/0683 (2006.01)

Patent

CA 2057649

A system for the generation of modulated optical signals, wherein the d.c. bias current of a semiconductor laser, associated with an opto-electronic feedback circuit including a delay, is superimposed with the variations of a current obtained by detecting an optical signal resulting from the combination of an optical, amplitude-modulated input signal and of the optical signal present in the feedback circuit. By a suitable choice of the modulation frequency of the input signal and of the low-frequency gain of the feedback loop, the laser output signal is amplitude- modulated at a frequency equal to the modulation frequency of the input signal.

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