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. 04, 2006
Filed:
Sep. 16, 2004
Kostadin D. Djordjev, Cupertino, CA (US);
Michael R. T. Tan, Menlo Park, CA (US);
Chao-kun Lin, Fremont, CA (US);
Scott W. Corzine, Sunnyvale, CA (US);
Kostadin D. Djordjev, Cupertino, CA (US);
Michael R. T. Tan, Menlo Park, CA (US);
Chao-Kun Lin, Fremont, CA (US);
Scott W. Corzine, Sunnyvale, CA (US);
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
A light modulator having a waveguide and a resonator is disclosed. The waveguide routes light of wavelength λ past the resonator. The resonator is coupled to the waveguide such that a portion of the light is input to the resonator, the resonator having a resonance at λ. The resonator includes a gain region in which light of wavelength λ is amplified and an absorption region in which light of wavelength λ is absorbed, the absorption region having first and second states, the first state absorbing less light of wavelength λ than the second state, the state of the absorption region is determined by an electrical signal coupled to the absorption region. The gain region provides a gain that compensates for the light absorption in the first state. In one embodiment, the waveguide and resonator are critically coupled when the absorption region is in the second state.