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:
Sep. 06, 1994
Filed:
Mar. 11, 1993
Hongxing Dai, Gloucester, CA;
Siegfried Janz, Ottawa, CA;
Michel M Dion, Gloucester, CA;
Richard Normandin, Ottawa, CA;
National Research Council of Canada, Ottawa, CA;
Abstract
An active surface-emitting harmonic generator based on a multilayer Al.sub.x Ga.sub.1-x As non linear waveguide integrated monlithically with a tunable InGaAs single quantum well laser is provided. Controlling the difference in frequency between a signal provided by the tunable laser and another input optical signal allows an output signal to be directed to any of a plurality of directions in space. Positioning detectors near the monolithic device allows spatial addressing. The controllable monolithic device may also be used to scan and thus to read data stored on holographic media.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile