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. 02, 1978
Filed:
Nov. 07, 1975
Applicant:
Inventors:
Charles K Kao, Roanoke, VA (US);
James E Goell, Roanoke, VA (US);
Assignee:
International Telephone & Telegraph Corporation, Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9621 ; 350 9615 ;
Abstract
Methods and materials are disclosed for providing an optical fiber transmission mixer wherein the cladding material is removed from an intermediate region of a plurality of fibers and the exposed fiber cores are encapsulated in a matching or slightly higher refractive index material. The encapsulated intermediate region of the fibers is then enclosed in a low index sheath to prevent light from escaping from the mixer.