Semiconductor laser modulation control system

Details Semiconductor laser modulation control system Semiconductor laser modulation control system

H - Electricity

01

S

325/1

H01S 5/062 (2006.01) H01S 5/042 (2006.01)

Patent

CA 1281075

SEMICONDUCTOR LASER MODULATION CONTROL SYSTEM ABSTRACT OF THE DISCLOSURE Disclosed is a semiconductor laser modulation control system, and a method thereof. The system includes a drive circuit (1) for supplying a drive current to a semiconductor laser (2) in accordance with an input data, to modulate the input data into an optical signal of the semiconductor laser (2). The optical signal is at either one of a high intensity state or a low intensity state in accordance with an input data of "1" or "0", in respective time slots of the input data. The system further includes a duty ratio conversion circuit (3) for converting the duty ratio of the input data in such a way that the low intensity state of the optical signal is returned to the high intensity state within each time slot of the input data, whereby the relaxation oscillation is suppressed.

575060

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