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:
Mar. 21, 2006
Filed:
Jun. 20, 2003
Majd Zoorob, Hampshire, GB;
Martin Charlton, Hampshire, GB;
Greg Parker, Hampshire, GB;
Mesophotonics Limited, Southampton, GB;
Abstract
There is provided a planar waveguide structure () having a first core layer (), a second core layer () and a cladding layer (), wherein the cladding layer () is disposed between the first core layer () and the second core layer () to form an inter-core cladding layer (). The inter-core cladding layer () comprises a first region () having a first refractive index and an array of sub-regions () formed therein having a second refractive index. The subregions () do not extend into either the first or the second core layer, and they give rise to a photonic band structure region, which is effective to perturb an evanescent field of an optical signal propagating through the core layers.