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:
May. 01, 2007
Filed:
Jul. 14, 2003
Henry Huang, Edison, NJ (US);
Henry Huang, Edison, NJ (US);
Fitel U.S.A. Corp., Norcross, GA (US);
Abstract
A passive temperature-compensated optical grating arrangement includes a housing of low CTE material, with the optical grating stretched across the housing between a first, fixed sidewall and a lever arm, the lever arm also being formed of a low CTE material. An expansion element of high CTE material is attached to the frame and disposed to contact the lever arm, resulting in rotating the lever arm as changes in temperature change the dimensions of the expansion element. By properly sizing the lever arm and the expansion element, changes in grating wavelength as a function of temperature can be compensated for by adjusting the strain applied to the grating as it is pulled or compressed as the lever arm is moved.