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:
Nov. 13, 2018
Filed:
Aug. 22, 2017
Chen-kuo Sun, Escondido, CA (US);
Chen-Kuo Sun, Escondido, CA (US);
Other;
Abstract
In accordance with the present invention the switching element of an optical switch for switching/modulating an optical signal from one optical waveguide to another is a reverse bias diode. More particularly, the diode is itself an optical waveguide that has been doped to create a predetermined depletion width, W, between the N-type and IP-type regions of the diode. In operation, an optical signal is input into the waveguide/diode in a manner that generates a second order mode for the optical signal. The second order mode optical signal then transits the waveguide/diode back and forth through the depletion width W. A switching voltage, V, which is selectively applied to the waveguide/diode, can then alter the depletion width Wof the waveguide/diode. Consequently, the propagation interference distance, λ, of the waveguide/diode will also be changed, to thereby direct the optical signal from one output optical filter to another.