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:
Aug. 21, 2001
Filed:
Jan. 25, 1999
John Paul Mattia, Basking Ridge, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A tunable photonic band-gap device is disclosed which utilizes photoresponsive materials and is tunable over a range of wavelengths with the application of light. The device comprises a structure having a plurality of photoresponsive regions arranged in a matrix whereby the behavior of the device in preventing electromagnetic radiation from propagating through the structure may be modified by applying light to the photoresponsive regions. In one embodiment, a photonic band-gap transistor has a light propagation path defined by a plurality of dielectric and photoresponsive rods disposed in a substrate for the routing of a signal through the structure from an inlet to an outlet. The path comprises an input signal path beginning at the inlet, an output signal path terminating at the outlet, and a control signal path which merges with the input signal path to be joined with the output signal path at a common intersection point. In this embodiment, photoresponsive rods are disposed at the common intersection point so that a control signal may be selectively passed to the photoresponsive rods to alter the optical properties of the photoresponsive rods and thereby tune the output signal generated by the device at the outlet.