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:
Apr. 11, 2006
Filed:
Aug. 11, 2003
Shervin Taghavi-larigani, Pasadena, CA (US);
Jakob J. Vanzyl, Pasadena, CA (US);
Amnon Yariv, Pasadena, CA (US);
Shervin Taghavi-Larigani, Pasadena, CA (US);
Jakob J. Vanzyl, Pasadena, CA (US);
Amnon Yariv, Pasadena, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
Tunable semiconductor lasers are disclosed requiring minimized coupling regions. Multiple laser embodiments employ ring resonators or ring resonator pairs using only a single coupling region with the gain medium are detailed. Tuning can be performed by changing the phase of the coupling coefficient between the gain medium and a ring resonator of the laser. Another embodiment provides a tunable laser including two Mach-Zehnder interferometers in series and a reflector coupled to a gain medium.