The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 1977
Filed:
May. 01, 1975
Arnold M Levine, Chatsworth, CA (US);
International Telephone and Telegraph Corporation, New York, NY (US);
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.