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. 28, 2012
Filed:
Jun. 17, 2009
Applicants:
Serge Bidnyk, Ottawa, CA;
Ashok Balakrishnan, Ottawa, CA;
Matt Pearson, Ashton, CA;
Inventors:
Assignee:
Enablence Inc., Kanata, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 (2006.01); G02B 6/34 (2006.01); G02B 6/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
Segmented waveguide structures provide mode matching in planar lightwave circuits between waveguides and other waveguiding structures, e.g. slab waveguides and optical fibers. The present invention eliminates back reflections from the core segments by etching the leading and trailing faces of the core segments with a plurality of parallel facet sections, which are rearwardly offset in the transmission direction by an odd number of quarter wavelengths.