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:
Feb. 15, 1977
Filed:
Aug. 04, 1975
Applicant:
Inventor:
Michael Robert Matthews, London, EN;
Assignee:
The Post Office, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
156644 ; 156635 ; 156663 ; 252 793 ;
Abstract
A dielectric optical waveguide coupler for optically coupling together two lengths of dielectric optical waveguide consists of a tube having a capillary bore, into which may be inserted, from each end of the tube, the two dielectric optical waveguides to be joined. The capillary bore is tapered at each end to facilitate the insertion of the dielectric optical waveguides. The dielectric optical waveguide coupler may be made by immersing a capillary bore tube with its capillary bore filled with water into an etchant solution.