Coherent light generators – Particular component circuitry – For driving or controlling laser
Reexamination Certificate
2005-09-20
2005-09-20
Le, Hoanganh (Department: 2828)
Coherent light generators
Particular component circuitry
For driving or controlling laser
C372S038010
Reexamination Certificate
active
06947458
ABSTRACT:
A control circuit for a laser diode includes a power controller and a wavelength controller. The power controller adjusts a bias current to the laser diode to change the power output of the laser diode. The power change can have a corresponding wavelength shift effect on the nominal operating wavelength of the laser diode. The wavelength controller compensates for the wavelength shift such that the laser diode maintains operation at the nominal wavelength. The circuit provides for electrical control of the laser output power without the need for a costly and bulky optical attenuator. The circuit also provides wavelength control to compensate for the relationship between laser diode operating temperature and wavelength.
REFERENCES:
patent: 4081670 (1978-03-01), Albanese
patent: 4345330 (1982-08-01), Howie et al.
patent: 5097473 (1992-03-01), Taguchi
patent: 5136600 (1992-08-01), Fidric et al.
patent: 5285464 (1994-02-01), Ogino
patent: 5299212 (1994-03-01), Koch et al.
patent: 5309458 (1994-05-01), Carl
patent: 5530712 (1996-06-01), Solina et al.
patent: 5563898 (1996-10-01), Ikeuchi et al.
patent: 5579328 (1996-11-01), Habel et al.
patent: 5666045 (1997-09-01), Grodevant
patent: 5761230 (1998-06-01), Oono et al.
patent: 5793786 (1998-08-01), Furumiya
patent: 5881081 (1999-03-01), Hwang
patent: 5966395 (1999-10-01), Ikeda
patent: 6091747 (2000-07-01), Morita et al.
patent: 6192060 (2001-02-01), Kobayashi
patent: 6226114 (2001-05-01), Ashkeboussi et al.
patent: 6233261 (2001-05-01), Mesh et al.
patent: 6233262 (2001-05-01), Mesh et al.
patent: 6282218 (2001-08-01), Anderson
patent: 6320890 (2001-11-01), Taguchi
patent: 6369926 (2002-04-01), Lyu et al.
VCB Series Optical Attenuators,The JDS Uniphase Site, Feb. 13, 2001, one page.
Variable Optical Attenuator,Nortel Networks, Preliminary Data Sheet, Feb. 1, 1999, 2 pages.
10 Gb/s Data Modulator w/Integrated VOA,The JDS Uniphase Site, Feb. 13, 2001, one page.
10 Gbits/s Lithium Niobate Electro-Optic Modulator,Lucent Technologies Data Sheet, Nov. 2000, 4 pages.
ADN2841 Dual Loop 155Mbps to 2.7Gbps Laser Diode Drive,Analog Devices, Aug. 2001, 10 pages.
Hutchinson Jerry D.
Moriarty Daniel T.
Alcatel Communications, Inc.
Le Hoang-anh
Nguyen Tuan N.
Sewell V. Lawrence
Smith Jessica W.
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