Optical communications – Optical communication over freee space – Transmitter and receiver
Reexamination Certificate
2004-02-12
2008-03-11
Chan, Jason (Department: 2613)
Optical communications
Optical communication over freee space
Transmitter and receiver
C398S129000, C398S123000
Reexamination Certificate
active
07343099
ABSTRACT:
A free-space adaptive optical laser communication system having signal transmission and reception channels at all terminals in the communication system, wherein wavefront sensing and wavefront correction mechanisms are employed along signal transmission and reception channels of all terminals in the communication system (i.e. adaptive optics) to improve the condition of the laser beam at the receiver (i.e. reduce the size of the spot a the detector plane). Speckle-to-receiver-aperture tracking mechanisms are employed in the transmission channel of the communication system and laser beam speckle tracking mechanism in the reception channels thereof, so as to achieve a first level of optical signal intensity stabilization at signal detector of each receiving channel. Speckle-to-fiber/detector locking mechanisms are also employed in signal receiving channels of all terminals in the communication system so as to achieve a second level of optical signal intensity stabilization at signal detector of each receiving channel.
REFERENCES:
patent: 4123651 (1978-10-01), Mongeon
patent: 4491982 (1985-01-01), Candy et al.
patent: 4928317 (1990-05-01), Franchini
patent: 5119225 (1992-06-01), Grant et al.
patent: 5218467 (1993-06-01), Ross et al.
patent: 5661582 (1997-08-01), Kintis et al.
patent: 5689335 (1997-11-01), Strauss
patent: 5786923 (1998-07-01), Doucet et al.
patent: 5801866 (1998-09-01), Chan et al.
patent: 6043918 (2000-03-01), Bozzay et al.
patent: 6323980 (2001-11-01), Bloom
patent: 6348986 (2002-02-01), Doucet et al.
patent: 6373607 (2002-04-01), Rivers et al.
patent: 6452145 (2002-09-01), Graves et al.
patent: 6464364 (2002-10-01), Graves et al.
patent: 6559993 (2003-05-01), Doucet et al.
patent: 6568647 (2003-05-01), Graves et al.
patent: 6570692 (2003-05-01), Doucet et al.
patent: 2002/0109884 (2002-08-01), Presley et al.
patent: 2003/0067657 (2003-04-01), Dimmler et al.
patent: 2004/0141752 (2004-07-01), Shelton et al.
patent: 2004/0208597 (2004-10-01), Wittenberger et al.
patent: 2005/0069325 (2005-03-01), Cicchiello et al.
patent: WO 02/059674 (2002-08-01), None
Scientific publication entitled “Chaotic Free-Space Laser Communication over a Turbulent Channel” by N.F. Rulkov, M.A. Voronstsov, and L. Illing, Physical Review Letters, vol. 89, No. 27, Dec. 30, 2002, 4 pages.
Scientific publication entitled “Three-Dimensional Modeling of Optical Turbulence” by Frank H. Ruggiero and Daniel A. DeBenedictis, Users Group Conference, 2000, pp. 1-9.
PCT Search Report for PCT/US05/04389, completed Oct. 12, 2006.
Jankevics Andrew
Wirth Allan
Chan Jason
Curs Nathan
Metrologic Instruments Inc.
Tarolli, Sundheim Covell & Tummino LLP
LandOfFree
Free space optical (FSO) laser communication system... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Free space optical (FSO) laser communication system..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Free space optical (FSO) laser communication system... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3969326