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:
Sep. 24, 2013
Filed:
Mar. 14, 2011
Onur Can Akkaya, Stanford, CA (US);
Michel J. F. Digonnet, Palo Alto, CA (US);
Onur Kilic, Mountain View, CA (US);
Gordon S. Kino, Stanford, CA (US);
Olav Solgaard, Stanford, CA (US);
Onur Can Akkaya, Stanford, CA (US);
Michel J. F. Digonnet, Palo Alto, CA (US);
Onur Kilic, Mountain View, CA (US);
Gordon S. Kino, Stanford, CA (US);
Olav Solgaard, Stanford, CA (US);
The Board of Trustees of the Leland Stanford Junior University, Palo Alto, CA (US);
Abstract
An acoustic sensor includes a diaphragm having a reflective element. The sensor has an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element. A first end of the optical fiber and the reflective element form an optical cavity therebetween. The acoustic sensor further includes a structural element mechanically coupled to the diaphragm and the optical fiber. The structural element includes a material having a coefficient of thermal expansion substantially similar to the coefficient of thermal expansion of the optical fiber. For example, the material can be silica.