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:
Oct. 17, 2006
Filed:
Oct. 26, 2001
Giacomo Gorni, Pavia, IT;
Maurizio Tormen, Belluno, IT;
Marco Romagnoli, Milan, IT;
Matteo Cherchi, Lecco, IT;
Giacomo Gorni, Pavia, IT;
Maurizio Tormen, Belluno, IT;
Marco Romagnoli, Milan, IT;
Matteo Cherchi, Lecco, IT;
Pirelli & C. S.p.A., Milan, IT;
Abstract
An optical wavelenth selective filter on an optical waveguide and a method of making the same is provided. The filter is able to transmit a first predetermined band of wavelengths and to reflect a second predetermined band. The filter further includes a plurality of transmissive couples and reflective couples in series, with each of the couples including a first zone of high refractive index and a second zone of low refractive index adjacent to each other so as to form a structure with a high gap modulated refractive index.