公开(公告)号：US10520355B1

公开(公告)日：2019-12-31

申请号：US15919326

申请日：2018-03-13

申请人： NUtech Ventures, Inc. ,  The United States of America, as represented by the Secretary of the Navy

发明人： Ming Han ,  Guigen Liu ,  Weilin Hou ,  Qiwen Sheng

IPC分类号： G01H9/00 ,  G01K11/32 ,  G01K13/02 ,  G01F1/688

摘要： A fiber optic sensor, a process for utilizing a fiber optic sensor, and a process for fabricating a fiber optic sensor are described, where a double-side-polished silicon pillar is attached to an optical fiber tip and forms a Fabry-Pérot cavity. In an implementation, a fiber optic sensor in accordance with an exemplary embodiment includes an optical fiber configured to be coupled to a light source and a spectrometer; and a single silicon layer or multiple silicon layers disposed on an end face of the optical fiber, where each of the silicon layer(s) defines a Fabry-Pérot interferometer, and where the sensor head reflects light from the light source to the spectrometer. In some implementations, the fiber optic sensor may include the light source coupled to the optical fiber, a spectrometer coupled to the optical fiber, and a controller coupled to the high-speed spectrometer.

公开(公告)号：US10731969B2

公开(公告)日：2020-08-04

申请号：US15573301

申请日：2016-05-12

申请人： NUtech Ventures, Inc.

发明人： Ming Han

IPC分类号： G01B11/16 ,  G01J3/18 ,  G01J3/26 ,  G01J3/02 ,  G01D5/353 ,  G02B6/293 ,  G02B6/02 ,  G02B6/42

摘要： An in-line fiber-optic sensing element, a system, and methods for detecting strain using a fiber optic sensor are described that include using at least two chirped grating structures. In an implementation, an in-line fiber-optic sensing element that employs example techniques in accordance with the present disclosure includes an optically transmissive fiber including a core and an outer layer; a Fabry-Perot cavity defined by a portion of the optically transmissive fiber and two chirped fiber-Bragg grating structures, where the two chirped grating structures are separated and are configured to reflect light.

公开(公告)号：US10359316B1

公开(公告)日：2019-07-23

申请号：US15617801

申请日：2017-06-08

申请人： NUtech Ventures, Inc. ,  UT-Battelle, LLC

发明人： Ming Han ,  Matthew L. Reinke

IPC分类号： G01J5/08 ,  G01N21/41 ,  G01N21/45 ,  G01N21/47 ,  G01J3/45 ,  G01B9/02

摘要： The present disclosure is directed to a fiber optic bolometer device. In an implementation, a fiber optic bolometer device includes an optical fiber and a silicon layer that comprises a Fabry-Pérot interferometer. The silicon layer includes a first surface and a second surface. The fiber optic bolometer device includes a reflective dielectric film disposed over the first surface of the silicon layer where the reflective dielectric film is adjacent to an end face of the optical fiber. The fiber optic bolometer device also includes an absorptive coating disposed over the second surface of the silicon layer (e.g., the surface distal to the end face of the optical fiber).