We describe a new world's record for free-space optical communications realized with a 4-channel, 2.5 Gb/s per channel system, operating error-free over a free-space horizontal distance of 4.4 km. This is made possible by three key developments: (1) specialized optical telescope-transceiver terminals, (2) multimode fiber DWDMs and (3) high power 1550 nm Er/Yb optical amplifiers.
Published in:
Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication. OFC/IOOC '99. Technical Digest
(Volume:Supplement
)
Date of Conference: 21-26 Feb. 1999