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:
Dec. 05, 2006
Filed:
Jan. 13, 2004
Rene Gerrit Heideman, Oldenzaal, NL;
Marcel Hoekman, Enschede, NL;
Rene Gerrit Heideman, Oldenzaal, NL;
Marcel Hoekman, Enschede, NL;
LioniX BV, , NL;
Abstract
The illustrative embodiment of the invention is a surface waveguide having low modal birefringence. The surface waveguide has a composite guiding region that is sandwiched by a lower cladding layer and an upper cladding layer, wherein the cladding layers serve to confine propagating light to the composite guiding region. In accordance with the illustrative embodiment, the composite guiding region is structured so that it exhibits a balanced stress configuration, wherein the stress in the direction that aligns with the Tpolarization mode is substantially equal to the stress in the direction that aligns with the Tpolarization mode. The balanced stress configuration results in a surface waveguide that exhibits very low modal birefringence.