Title: Submarine optical communication system with fiber optic depth compensator

Abstract: A system for providing secure communication by use of optical frequency transmission between an aircraft or spacecraft and a deeply submerged submarine. The submarine extends at least one fiber optic cable terminated in a lens arrangement. A flotation unit insures that the cable is extended substantially vertically to a point approaching, but not penetrating the surface of the sea. The thickness of the water layer between the surface and the cable upper end is thereby such as to reduce the attenuation of transmitted and received optical signals. Submarine communications may thereby be effected through modulated light beams while the submarine itself remains at a greater and more secure depth.

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Inventors: Levine, Arnold M. (Chatsworth, CA, US)

Application Number: 573738
Filing Date: 1975-05-01
Publication_date: 1977-05-03
Assignee: International Telephone and Telegraph Corporation (New York, NY)
Primary Class(es): 398/104 340/850, 385/116, 398/125
Other Classes:
US Patent Ref:

3258595	Jun, 1966	Galante	178/DIG.
3788255	Jan, 1974	Tennyson	343/709.
3818523	Jun, 1974	Stillma, Jr.	340/2.
3903496	Sep, 1975	Stimler	250/199.

Other Refs:
Primary Examiner: Safourek, Benedict V.
Assistant Examiner: Psitos, Aristotelis M.
Attorney: O'Neil; William T.