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:
May. 19, 2015
Filed:
Jan. 03, 2012
Antoine Monmayrant, Toulouse, FR;
Olivier Gauthier-lafaye, Toulouse, FR;
Kristel Chan Shin Yu, Ramonville Saint Agne, FR;
Anne-laure Fehrembach, Marseilles, FR;
Anne Sentenac, Marseilles, FR;
Philippe Arguel, Toulouse, FR;
Jacques Loesel, Goyrans, FR;
Antoine Monmayrant, Toulouse, FR;
Olivier Gauthier-Lafaye, Toulouse, FR;
Kristel Chan Shin Yu, Ramonville Saint Agne, FR;
Anne-Laure Fehrembach, Marseilles, FR;
Anne Sentenac, Marseilles, FR;
Philippe Arguel, Toulouse, FR;
Jacques Loesel, Goyrans, FR;
Abstract
The invention relates to a polarization-insensitive optical filter centered on a wavelength measured in vacuum, comprising: first and second waveguides each having a propagation mode; a first grating formed in or on the surface of the first waveguide, the first grating being periodical at least along a first axis Ox defining a first orthonormal base Oxyz; a second grating formed in or on the surface of the second waveguide, the second grating being periodical at least along a second axis Ox' defining a second orthonormal base Ox′y′z; wherein the first and second grating are provided one above another and are such that the first axis Ox and the second axis Ox′ define an angle ξ different from ±π/2 radians so that, when the first grating is illuminated by a light beam, the propagation modes are excited and have orthogonal fields for an angle of incidence of the light beam.