Semiconductor laser device driving circuit

Details Semiconductor laser device driving circuit Semiconductor laser device driving circuit

H - Electricity

04

B

H04B 10/145 (2006.01) H01S 5/0683 (2006.01)

Patent

CA 2059805

ABSTRACT OF THE DISCLOSURE A semiconductor laser device driving circuit including a semiconductor laser device, a detection unit for detecting a luminous output of the semiconductor laser device, a reference current unit for providing reference currents for reference maximum and minimum values of the luminous output of the semiconductor laser device, and a driving unit for supplying currents to the semiconductor laser device so as to make maximum and minimum values of the luminous output of the semiconductor laser device detected by the detection unit coincident with the reference maximum and minimum values determined by the reference currents. In the semiconductor laser device driving circuit, the reference currents are given as differences between a plurality of currents supplied from current sources. - 28 -

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