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:
Feb. 15, 2005
Filed:
Apr. 10, 2003
Applicants:
John a Rogers, Champaign, IL (US);
Todd R. Salamon, Chatham, NJ (US);
Inventors:
John A Rogers, Champaign, IL (US);
Todd R. Salamon, Chatham, NJ (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B006/34 ;
U.S. Cl.
CPC ...
Abstract
Wide range linear tuning of optical gratings is possible by selecting a thin film heater such that the temperature variation in heater's resistivity ρ matches the temperature variation in the heat transfer coefficient of air h. A tunable optical device, such as a fiber grating with such a grating heater, exhibits near linear tuning characteristics over a wide range of temperatures and tuning currents. The heater is useable in other heat tunable optical devices such as interferometers.