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:
Apr. 26, 1977
Filed:
Jul. 25, 1975
Enrique Alfredo Marcatili, Rumson, NJ (US);
Dietrich Marcuse, Lincroft, NJ (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
The disclosed optical fiber communication system employs a fiber with a core having an index of refraction graded in an approximately parabolic fashion and a light-emitting diode joined directly to the fiber to serve as the light source for the system. It has been found that the overall electrical efficiency of the system, at least with respect to drive power for the diode, is maximized when the ratio of the diode radius to the radius of the fiber core is about 0.2. More broadly, the ratio of radii is found advantageously to lie in the range between about 0.1 and about 0.8, not only for efficiency reasons but also to maximize the amount of light injected into the fiber.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile