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:
Apr. 12, 2005
Filed:
Nov. 06, 2002
Yee Loy Lam, Singapore, SG;
Yuen Chuen Chan, Singapore, SG;
Peh Wei Tan, Singapore, SG;
Bee Khuan Law, Singapore, SG;
Yee Loy Lam, Singapore, SG;
Yuen Chuen Chan, Singapore, SG;
Peh Wei Tan, Singapore, SG;
Bee Khuan Law, Singapore, SG;
Denselight Semiconductor PTE LTD, Singapore, SG;
Abstract
A device for optical space switching in optical networks. The optical device comprises a broad area optical waveguide section having a number of electrodes extending over at least a portion of the length of the broad area optical waveguide section. The application of an electrical signal to an electrode causes a local change in effective refractive index of the broad area optical waveguide section, thereby causing light preferentially to propagate along a predetermined path in dependence on the configuration of the electrode. In particular the broad area waveguide device is implemented in indium phosphide (InP). Also described is a method for waveguiding in the optical device.