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:
Dec. 27, 2016
Filed:
Jun. 29, 2010
Wenhui Wang, Lowell, MA (US);
Xingwei Vivian Wang, Worcester, MA (US);
Kai Sun, Acton, MA (US);
Nan Wu, Lowell, MA (US);
Wenhui Wang, Lowell, MA (US);
Xingwei Vivian Wang, Worcester, MA (US);
Kai Sun, Acton, MA (US);
Nan Wu, Lowell, MA (US);
University of Massachusetts, Boston, MA (US);
Abstract
An optical fiber sensor () can be used to measure pressure with high sensitivity and fine resolution. As a () at the end of the sensor expands or contracts, the spectrum of a beam reflected from the end of fiber shifts, producing a change linked to pressure exerted on the sensor. Novel aspects of the present inventive sensor include the direct bonding of a silica thin film diaphragm () to the optical fiber with localized or confined heating and a uniform thickness of the diaphragm. The resulting sensor has a diameter that matches the diameter of the optical fiber. Because the sensor is all silica, it does not from temperature-induced error. In addition, the sensor can be very sensitive because the diaphragm can be very thin; it can also make highly repeatable measurements due to its very uniform thickness.