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:
Jul. 16, 1996
Filed:
Nov. 16, 1993
William H Nelson, Grafton, MA (US);
GTE Laboratories Incorporated, Waltham, MA (US);
Abstract
An X-geometry optical switch includes primary and secondary input branch waveguides merging at a junction, and first and second output branch waveguides optically coupled to the input branches at the junction. In a dual electrode configuration, one electrode is positioned on the primary input branch waveguide and the other electrode on one of the input branch waveguides. By applying a common or opposite polarity bias to the electrodes, changes in the waveguide refractive optical indices are produced so that light propagating through the primary input is directed to one of the output branch waveguides in accordance with adiabatic modal evolution. In another X-geometry optical switch, the electrode on the output branch is eliminated by fabricating the output branch waveguides to exhibit a natural index asymmetry. Accordingly, since there is a normal ON-OFF path designation without biasing, only the single electrode on the primary input branch waveguide is necessary to effect switching.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile