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:
Nov. 07, 2017
Filed:
Jun. 04, 2014
Applicants:
Universite DE Limoges, Limoges, FR;
Cnrs, Paris, FR;
Glophotonics, Limoges, FR;
Inventors:
Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/02 (2006.01); B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/02328 (2013.01); B29D 11/00663 (2013.01); G02B 6/02338 (2013.01); G02B 6/02347 (2013.01);
Abstract
A waveguide with a hollow core () delimited by a closed contour includes a succession of arcs () of negative curvature, each arc including a chord (), characterized in that the contour of the hollow core () includes small arcs (PA) and large arcs (GA) arranged alternately, each arc () being symmetric with respect to a straight line passing through the center () of the hollow core () and the middle of the chord () thereof, the ratio b=2Ra/C of the large arcs being greater than 0.9 for the large arcs (GA), Ra corresponding to the maximum distance between the chord () and the arc (), C corresponding to the length of the chord ().