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. 18, 2005
Filed:
Nov. 25, 2003
Peerouz Amleshi, Lisle, IL (US);
Masum Choudhury, Naperville, IL (US);
Lawrence Kao, Naperville, IL (US);
Gourgen Oganessyan, Downers Grove, IL (US);
Peerouz Amleshi, Lisle, IL (US);
Masum Choudhury, Naperville, IL (US);
Lawrence Kao, Naperville, IL (US);
Gourgen Oganessyan, Downers Grove, IL (US);
Emcore Corporation, Somerset, NJ (US);
Abstract
Two techniques are disclosed for writing waveguides between laser diodes and an optical fiber such that the laser diodes are aligned with their respective waveguide facets. The first technique utilizes a light sensitive polymer, such as a ultra-violet (UV) cross-linkable polymer. A precision writing system locates the light emitting centers of the laser diodes and writes the waveguide circuit by exposing the waveguiding regions with the appropriate light. The unexposed areas of the core layer are developed with a solvent and removed. The entire device is then encapsulated with a low-index cladding polymer. The second technique utilizes an active polymer approach in which waveguide regions are formed when the writing beam aligns the dipole molecules in the polymer to cause a change in the refractive index of the polymer.