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. 22, 1984
Filed:
Apr. 30, 1981
Hans-Erdmann Korth, Stuttgart, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Low loss optical couplers for an optical data bus include a first component having permanent input/output connections to the bus and a reference face capable of reflecting energy from the input to the output. If optical energy is to be coupled into or out of the bus, a second component is secured to the first component. The second component has input and/or output optical connections and a reference face which contacts at least part of the reference face of the first component and which permits optical energy to be transferred between the two components. Frequency-selective encoders and decoders using active optical devices are also disclosed.