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:
Jul. 05, 2005
Filed:
Mar. 07, 2003
Applicants:
Kevin K. Lee, Cambridge, MA (US);
Desmond R. Lim, Cambridge, MA (US);
Inventors:
Kevin K. Lee, Cambridge, MA (US);
Desmond R. Lim, Cambridge, MA (US);
Assignee:
LNL Technologies, Inc., Cambridge, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B006/12 ;
U.S. Cl.
CPC ...
Abstract
The invention features a programmable optical chip. The optical chip has a plurality of optical functions, each of which is connected to a waveguide having a core and a cladding. A photosensitive layer is disposed between at least three of the waveguides, and the photosensitive layer has a refractive index similar to that of the cladding prior to exposure to irradiation. The photosensitive layer changes refractive index upon exposure to irradiation to selectively form an optical connection between at least two of the waveguides.