Automatic setting of laser diode bias current

Details Automatic setting of laser diode bias current Automatic setting of laser diode bias current

2008-07-15

2008-07-15

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular component circuitry

Having feedback circuitry

C372S029011

Reexamination Certificate

active

11557557

ABSTRACT:
Threshold current may be determined and one or more bias sources may be programmed in a laser drive circuit. For example, a laser diode emits light along first and second optical paths. A polarizer is positioned in the first optical path between the laser diode and a first detector, which outputs a first detector signal corresponding to the measured optical power of polarized light. A second detector monitors light along the second optical path and provides a second detector signal. A bias compensation circuit receives the first and second detector signals and provides a bias current control signal, which is utilized to program a bias current source supplied to the laser diode. Additionally, multiple polarizer devices may be utilized e.g., a first polarizer in a first optical path aligned with the laser beam and a second polarizer in a second optical path aligned substantially orthogonal to the polarization of the laser beam.

REFERENCES:
patent: 4983034 (1991-01-01), Spillman, Jr.
patent: 4994663 (1991-02-01), Aoshima et al.
patent: 5150242 (1992-09-01), Fellows
patent: 5394415 (1995-02-01), Zucker et al.
patent: 5659560 (1997-08-01), Ouchi et al.
patent: 6639931 (2003-10-01), Dowd et al.
patent: 2002/0048291 (2002-04-01), Koyanagi
patent: 2005/0084202 (2005-04-01), Smith et al.
patent: 2007/0053395 (2007-03-01), Kamatani et al.

Affiliated with

Also associated with

Rating

Automatic setting of laser diode bias current does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic setting of laser diode bias current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic setting of laser diode bias current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3951846