Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1992-04-06
1993-04-27
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
25022724, 250551, 385 47, 21912181, 359117, G01J 120, G02B 2700, G02B 600
Patent
active
052064972
ABSTRACT:
An optical switching apparatus wherein one or more information-bearing collimated laser beams are each launched into free-space and directed onto a selected photo-receptor to effect an optical cross-connection. Each launched beam is split into two separate components: a payload component, and a monitor component. The payload component of the beam is directed toward a photo-receptor, and the monitor component is directed toward a photo-sensor. The direction in which a particular information-bearing beam is launched is controlled in response to feedback received from the photo-sensor as a function of the position the monitor component associated with that information-bearing beam.
REFERENCES:
patent: 4329017 (1982-05-01), Kapany et al.
patent: 4348939 (1982-09-01), Hipp
patent: 4580292 (1986-04-01), Laor
patent: 4696062 (1987-09-01), La Budde
patent: 4714830 (1987-12-01), Usui
patent: 4801791 (1989-01-01), Cain
patent: 4843209 (1989-06-01), Milligan
patent: 4847479 (1989-07-01), Clark et al.
patent: 4893891 (1990-01-01), Fujita et al.
patent: 4927226 (1990-05-01), Ortiz, Jr.
patent: 4945489 (1990-07-01), Vahab
patent: 5000534 (1991-03-01), Watanabe et al.
patent: 5045678 (1991-09-01), Esser et al.
Klauser, "Laser Micromachine", IBM Tech. Dis. Bull. vol. 21, No. 11, Apr. 1979, pp. 4431-4432.
H. Scott Hinton, "Switching to photonics", IEEE Spectrum, Feb. 1992, pp. 42-45.
AT&T Bell Laboratories
Marley R. P.
Messinger Michael
Nelms David C.
LandOfFree
Free-space optical switching apparatus 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 switching apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Free-space optical switching apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2329389