Slope efficiency measurement apparatus for a laser device...

Details Slope efficiency measurement apparatus for a laser device... Slope efficiency measurement apparatus for a laser device...

2006-08-08

2006-08-08

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular component circuitry

Having feedback circuitry

C372S038020

Reexamination Certificate

active

07088752

ABSTRACT:
The slope efficiency of a laser diode is determined by temporarily adjusting a current applied to the laser and measuring a corresponding change in the average output power. Such prior art techniques require the laser modulation current average to be small to avoid impairment of transmission of data by the laser diode. An optical attenuator opposite an output of a laser diode resolves this problem by maintaining the average power emitted by the laser diode within acceptable operating limits.

REFERENCES:
patent: 4994059 (1991-02-01), Kosa et al.
patent: 5870217 (1999-02-01), Itou et al.
patent: 6414974 (2002-07-01), Russell et al.
patent: 2002/0021641 (2002-02-01), Miyabata et al.
patent: 2004/0208207 (2004-10-01), Kasper et al.
IBM technical disclosure bulletin (Temperature and aging compensation of laser drive circuits, Feb. 1994, vol. 37, p. 279-280).

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