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. 24, 2005
Filed:
Mar. 03, 2003
Shanti A. Cavanaugh, Santa Rosa, CA (US);
Lindsay W. Austin, Santa Rosa, CA (US);
Mark E. Young, Santa Rosa, CA (US);
Louis J. Molinari, Windsor, CA (US);
Shanti A. Cavanaugh, Santa Rosa, CA (US);
Lindsay W. Austin, Santa Rosa, CA (US);
Mark E. Young, Santa Rosa, CA (US);
Louis J. Molinari, Windsor, CA (US);
Spectraswitch, Inc., Santa Rosa, CA (US);
Abstract
A twisted nematic liquid crystal variable optical attenuator is presented with one substrate that includes a integrated subwavelength nanostructured polarizer. The device may incorporate an integrated isolator whereby a substrate of the liquid crystal sandwich is formed from doped garnet to comprise a faraday rotator etched with a subwavelenth optical nanostructured polarizing grating and enabling the substrate to function as an isolator. The liquid crystal variable optical attenuator may include a deposited metal gasket moisture barrier bonding the opposing top and bottom substrates each having a spacer layer to accurately control cell gap thickness. The liquid crystal variable optical attenuator may also include an integrated thermal sensor and heater deposition layer sandwiched between or deposited on at least one or both opposing substrates.