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:
Jun. 20, 2006
Filed:
Apr. 03, 2003
Jacob Scheuer, Petach Tikva, IL;
Moti Margalit, Zichron Yaaqov, IL;
Daphna Bortman-arbiv, Zichron Yaaqov, IL;
Jacob Scheuer, Petach Tikva, IL;
Moti Margalit, Zichron Yaaqov, IL;
Daphna Bortman-Arbiv, Zichron Yaaqov, IL;
Lambda Crossing Ltd., Caesaria, IL;
Abstract
A filtering method and optical filter structure are presented. The structure comprises an input waveguide, an output waveguide, and a filter stage formed by at least one closed loop resonator optically coupled to the input and output waveguides. A level of the coupling from each of the waveguides to the resonator is at least 5 times greater than a loss-per-revolution of the resonator. The filter structure thus provides for reducing a bandwidth and insertion loss while filtering at least one optical channel from a multi-channel light signal.