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. 26, 2008
Filed:
Apr. 04, 2006
Zhiyong Wang, Clifton Park, NY (US);
James R. Heflin, Jr., Blacksburg, VA (US);
Siddharth Ramachandran, Hoboken, NJ (US);
Zhiyong Wang, Clifton Park, NY (US);
James R. Heflin, Jr., Blacksburg, VA (US);
Siddharth Ramachandran, Hoboken, NJ (US);
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (US);
Furukawa Electric North America, Norcross, GA (US);
Abstract
The provision of an ionic self-assembled multilayer (ISAM) film on a fiber-optic element including a long period grating (LPG) by a simple, room temperature process provides tuning of the LPG and/or high sensitivity to the refractive index of the ambient environment of the fiber-optic element. Inclusion of a final layer or a probe, receptor or affinity ligand in the multi-layer film provides a highly sensitive sensor for specific chemical and biological materials. Use of a turn around point (TAP) LPG allows detection to be performed by detection of light intensity rather than wavelength of attenuation. Use of a material having an electro-optical response to an electrical field by change of dimension or refractive index allows the combination of a LPG or TAP LPG and ISAM film to function as a light modulator.