专利名称：Atmospheric optical communication link发明人：Kostal, Hubert,Luhn, Rodney C.,Smith,
Donald E.
申请号：EP90305087.0申请日：19900511公开号：EP0398596A3公开日：19920408
摘要：This invention is a mobile, short range, high data rate, high availability
atmospheric optical communication link which can be used to temporarily bridge a breakin an optical fiber network. Briefly, the invention comprises two transceivers, one at eachend of a break, to bridge a severed optical fiber via an atmospheric optical transmissionpath which can extend for a distance of roughly 5 miles. A special light source is notrequired. The light transmitted through the atmosphere is the low power light emittedfrom the end of an optical fiber and generated by an optical regenerator normally usedto generate light only for transmission through an optical fiber. The light is firstexpanded and collimated for atmospheric transmission and then transmitted to areceiver. At the receiver, the diameter of the received beam is optically reduced byfocusing it onto the end of an optical fiber for coupling the light into the fiber. The opticsfor the transmitter and receiver can be mounted on a platform that adjusts in real timeto optimize the signal received. Optical alignment can be automatically maintained bycomputer controlled transmitter steering and receiver tracking. The transmitters andreceivers require no communication other than the incoming beam to maintain opticalalignment and does not require additional bits in the data stream for telemetry.
申请人：AT&T Corp.
地址：32 Avenue of the Americas New York, NY 10013-2412 US
国籍：US
代理机构：Johnston, Kenneth Graham
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