Wavelength tunable laser apparatus and wavelength control...

Details Wavelength tunable laser apparatus and wavelength control... Wavelength tunable laser apparatus and wavelength control...

2007-08-03

2010-06-08

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S097000

Reexamination Certificate

active

07733933

ABSTRACT:
Included are: a gain chip having a gain unit and a phase control region; a current supply for causing a positive current to flow to the phase control region; a voltage supply for applying a bias voltage to the phase control region; and a control unit for selectively driving the current supply or the voltage supply depending on a direction of the wavelength shift. The control unit drives the current supply when a laser wavelength is to be shifted to a shorter wavelength side from a wavelength with the current supply and the voltage supply being turned off, and drives the voltage supply when the laser wavelength is to be shifted to a longer wavelength side from a wavelength with the current supply and the voltage supply being turned off.

REFERENCES:
patent: 5119393 (1992-06-01), Oka et al.
patent: 6738398 (2004-05-01), Hirata et al.
patent: 2005/0213618 (2005-09-01), Sochava et al.
patent: 2006-245346 (2006-09-01), None
Tatsuo Kunii et al.; Spectral characteristics for all MQW˜-1.5 um DBR lasers; 1991 Springtime National Convention of the Institute of Electronics, Information and Communication Engineers (IEICE); Semiconductor Technology Laboratory, Oki Electric Co., Ltd. pp. 1-5.
Tatsuo Kunii, et al.; Spectral characteristics for all MQW-1.5 um DBR lasers; 1991 Springtime National Convention of the Institute of Electronics, Information and Communication Engineers (IEICE); Semiconductor Technology Laboratory, Oki Electric Co., Ltd. pp. 1-5.

Affiliated with

Also associated with

Rating

Wavelength tunable laser apparatus and wavelength control... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wavelength tunable laser apparatus and wavelength control..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wavelength tunable laser apparatus and wavelength control... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4167190