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. 05, 2005
Filed:
Jun. 02, 2003
Ian Gregory Breukelaar, Ottawa, CA;
Philip Michael Wort, Kanata, CA;
Serge Bidnyk, Ottawa, CA;
Pierre Simon Joseph Berini, Ottawa, CA;
Ian Gregory Breukelaar, Ottawa, CA;
Philip Michael Wort, Kanata, CA;
Serge Bidnyk, Ottawa, CA;
Pierre Simon Joseph Berini, Ottawa, CA;
Spectalis Corp., Nepean, CA;
Abstract
A low loss, low drive voltage plasmon-polariton electro-optic modulator based on mode cutoff comprises a waveguide structure formed by a thin metallic strip surrounded by material having a relatively low free charge carrier density. The metallic strip has finite width and thickness with dimensions such that optical radiation having a wavelength in a predetermined range couples to the metallic strip and propagates along the length of the metallic strip as a plasmon-polariton wave. The surrounding material comprises two distinct portions with the metallic strip extending between them. The modulator comprises means for varying an electric field applied to at least one portion so as to vary the value of the electromagnetic property and thereby the propagation characteristics of the plasmon-polariton wave.