Light-emitting element controller, optical transmitting...

Details Light-emitting element controller, optical transmitting... Light-emitting element controller, optical transmitting...

2005-05-17

2005-05-17

Wong, Don (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S038100

Reexamination Certificate

active

06895028

ABSTRACT:
A pulse current component of a driving current is determined, based on a current-optical output coefficient derived using average optical output information of a semiconductor light-emitting element. A bias current component can be set by adjusting an average optical output of the semiconductor light-emitting element while changing the bias current component by the driving current including the determined pulse current component. Since the current-optical output coefficient can be derived based on the average optical output under wide conditions, both the pulse current component and the bias current component can be determined under the wide conditions and without using a quick-response light detector.

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