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:
Aug. 27, 1991
Filed:
Apr. 30, 1990
John M Golio, Chandler, AZ (US);
Earnest J Johnson, Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Optical signal frequency conversion and mixing is accomplished by an optical device comprised of a photodetector, a non-linear device, passive circuitry, and a multiple quantum well structure. The photodetector converts a light signal into an electrical signal. The non-linear devices create harmonics of the electrical signal of which the passive circuitry selects a desired frequency of the harmonics. This selected frequency in turn modulates the multiple quantum well structure. A power bias is applied to the multiple quantum well structure which is then modulated by it to produce a modulated output light beam modulated at the selected frequency.