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. 25, 2010
Filed:
Jan. 12, 2006
Shigeo Kittaka, Tokyo, JP;
Masatoshi Nara, Tokyo, JP;
Keiji Tsunetomo, Tokyo, JP;
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Abstract
A waveguide elementincluding a photonic crystal waveguide including a corethat is constituted by a photonic crystal having a refractive index periodicity at least in one direction, and that propagates an electromagnetic wave in a direction in which the photonic crystal does not have the refractive index periodicity. At least one of materials forming the coreconstituted by the photonic crystal, and at least a portion of a cladding in contact with a side face of the coreare constituted by a fluid. Thus, it is possible to provide a waveguide element that can be used as a light control element, can be produced easily and also can be applied to an optical sensor.