Coherent light generators – Particular beam control device – Tuning
Reexamination Certificate
2006-04-11
2006-04-11
Vannucci, James (Department: 2828)
Coherent light generators
Particular beam control device
Tuning
C372S032000
Reexamination Certificate
active
07027470
ABSTRACT:
The method and system operate to maintain a widely tunable laser (WTL) at a selected transmission wavelength. To lock the WTL to an ITU grid line, a portion of the output beam from the WTL is routed through the etalon to split the beam into a transmission line for detection by an etalon fringe detector. Another portion of the beam is routed directly to a laser wavelength detector to determine the power of the beam. A wavelength-locking controller compares signals from the two detectors and adjusts the temperature of the etalon to align the wavelength of one of the transmission lines of the etalon with the wavelength of the output beam, then controls the WTL in a feedback loop to lock the laser to the etalon line. The wavelength-locking controller thereafter monitors the temperature of the etalon and keeps the temperature constant to prevent any wavelength drift attributable to the etalon.
REFERENCES:
patent: 6157502 (2000-12-01), Kathman
patent: 6243403 (2001-06-01), Broutin et al.
patent: 6396605 (2002-05-01), Heflinger et al.
patent: 6556752 (2003-04-01), Fang et al.
patent: 6678432 (2004-01-01), Shigeta et al.
patent: 6693928 (2004-02-01), May
patent: 6711188 (2004-03-01), Ito et al.
patent: 6762119 (2004-07-01), Ray et al.
patent: 2001/0022793 (2001-09-01), Yokoyama
patent: 0042158 (1981-12-01), None
patent: 0568242 (1993-11-01), None
patent: 0773640 (1997-05-01), None
patent: 0967698 (1999-12-01), None
patent: 02-244782 (1990-09-01), None
patent: 1497565 (1989-07-01), None
patent: WO 95/29521 (1995-11-01), None
patent: WO 99/46836 (1999-09-01), None
Niemi, et al., “Simultaneous spectral filtering and wavelength monitoring of a DWDM transmitter using a tunable Fabry-Perot filter”,Optical Fiber Communication Conference(OFC). Technical Digest Postconference Edition, Baltimore, Maryland, USA,, Mar. 7-10, 2000, New York, NY.
Fish & Richardson P.C.
SpectraSensors, Inc.
Vannucci James
LandOfFree
Laser wavelength locker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser wavelength locker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser wavelength locker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3528067