Buffered laser communication link

Details Buffered laser communication link Buffered laser communication link

1997-12-15

2000-10-31

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359110, 359153, H04B 1000, H04B 1010, H04B 1008

Patent

active

061411280

ABSTRACT:
A transceiver for a two-way laser beam link in a communications system handles data blocks and stand-down blocks on both in-coming and out-going laser beams. The transceiver includes a detector unit which monitors the in-coming laser beam, and sends an interrupt signal on its out-going beam whenever the quality of the in-coming beam passes a predetermined threshold. Additionally, the transceiver includes an injector for inserting stand-down blocks onto its out-going beam in response to interrupt signals that are received on its in-coming beam. A router is provided at the transceiver for removing stand-down blocks from its in-coming beam. Appropriate buffers are provided at the transceiver so that laser transmissions with other transceivers can be made at a baud rate which is approximately twice as fast as the data signaling rate used on non-laser connections between each transceiver and other components of the system.

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Korevaar, Eric; Schuster, John; AstroTerra Corporation, 11659 Sorrento Valley Rd., Suite A, San Diego, CA 92121; and Bloom, Scott; Chan, Victor; Chen, Irene; Foster, Cary; Liu, C.S.; Low, Amy; Rivers, Mike; Slatnick, Kevin; ThermoTrex Corporation, 9550 Distribution Ave., San Diego, CA 92121; Status of BMDO/IST Lasercom Advanced Technology Demonstration, SPIE vol. 2123, Jan., 1994.
Korevaar, E.; Bloom, S.;Slatnick, K.; Chan V.; Chen, I; Rivers, M.; Foster, C.; Choi, K.; Liu, C.S.; ThermoTrex Corporation, 9550 Distribution Avenue, San Diego, CA 92121; Status of SDIO/IS&T Lasercom Testbed Program, SPIE, vol. 1866; Free-Space Laser Communication Technologies V, Jan., 1993, Los Angeles, California.
Korevaar, Eric; Hofmeister, R.J.; Schuster, J.; Chow-Miller, C.; Adhikari, P.; Hakakha, H.; Cuthbert, D; Ruigrok, R.; Astroterra Corporation, 11526 Sorrento Valley Rd., Suite V, San Diego, CA 92121; Design of Satellite Terminal for BMDO Lasercom Technology Demonstration, SPIE vol. 2381, Free-Space Laser Communication Technologies VII, Feb., 1995, San Jose, California.
Schuster, John; Hakakha, Harel; and Korevaar, Eric; AstroTerra Corporation, 11526 Sorrento Valley Rd., Suite V, San Diego, CA 92121; Optomechanical Design of STRV-2 Lasercom Transceiver Using Novel Azimuth/Slant Gimbal; SPIE vol. 2699; Free-Space Laser Communication Technologies VIII; Jan., 1996, San Jose, California.

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