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:
Feb. 21, 2012
Filed:
Aug. 25, 2004
Applicant:
Stanislav Petrovich Tarnavskii, Sydney, AU;
Inventor:
Stanislav Petrovich Tarnavskii, Sydney, AU;
Assignee:
Redfern Integrated Optics, Inc., Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A planar photonic waveguide incorporating a Bragg grating having an asymmetric reflectance spectrum (). In one embodiment, 'red' side lobes () are suppressed relative to 'blue' side lobes (). In another embodiment, blue side lobes are suppressed relative to red side lobes. The waveguide has a core with dimensions which vary along the length of the grating so as to produce the asymmetric reflectance spectrum. Where red side lobes are suppressed, the width of the core is greatest in the middle of the grating and decreases symmetrically towards each end.