Emily Elizabeth Ho Templeton, 44Blacksburg, VA

2018011, Apr 26, 2018

Dec 20, 2017

15/848415

- Sunnyvale CA, US
Justin W. KLEIN - Lansing MI, US
Mark E. FROGGATT - Blacksburg VA, US
Emily E.H. TEMPLETON - Blacksburg VA, US

G01M 11/00
G01D 5/353
G01B 9/02

An optical frequency domain reflectometry (OFDR) measurement is produced from an OFDR apparatus that includes a tunable laser source coupled to a sensing interferometer and a monitor interferometer. The sensing interferometer is also coupled to a waveguide, e.g., an optical sensing fiber. Sensor interferometric data obtained by the OFDR measurement is processed in the spectral domain (e.g., frequency) with one or more parameters to compensate for the optical dispersion associated with the sensing interferometer data. A Fourier Transform of the dispersion-compensated sensing interferometric data in the spectral domain is performed to provide a dispersion-compensated OFDR measurement information in the temporal (e.g., time) domain.

2017027, Sep 28, 2017

Aug 21, 2015

15/505726

- Roanoke VA, US
Justin W. KLEIN - Winston-Salem NC, US
Emily E.H. TEMPLETON - Blacksburg VA, US

G01D 5/353
G01M 11/00
G01L 1/24

An optical sensing fiber includes multiple reference reflectors spaced along a length of the fiber. Each of the multiple reference reflectors producing a reference scattering event having a known scattering profile including an elevated amplitude relative to scattering detected for neighboring segments of the optical fiber. Each of the segments is a length of contiguous fiber that is useable to initialize and perform a distributed Optical Frequency Domain Reflectometry (OFDR) sensing operation. An OFDR interrogation system is disclosed that measures a parameter using the optical sensing fiber.

2016037, Dec 22, 2016

Jun 17, 2016

15/186051

- Cambridge MA, US
- Roanoke VA, US
Marc McConley - Andover MA, US
Gregory Blasche - Burlington MA, US
Paul Bohn - St. Petersburg FL, US
Matthew S. Bottkol - Boston MA, US
Michael Ricard - Natick MA, US
Evan M. Lally - Blacksburg VA, US
Sandra M. Klute - Blacksburg VA, US
Matthew T. Reaves - Baltimore MD, US
Emily H. Templeton - Blacksburg VA, US
James Donna - Watertown MA, US

G01B 11/16
G01D 5/26
G01C 19/00

Systems and methods for determining the shape and/or position of an object are described. A fiber optic shape sensor (FOSS) may be used in combination with one or more inertial measurement units (IMUs) to mutually cross-correct for errors in the sensors' measurements of position and/or orientation. The IMU(s) may be attached to the FOSS's optical fiber, such that each IMU measures the orientation of a corresponding portion of the optical fiber. The position and shape of the optical fiber can then be determined based on the measurements obtained from the IMU(s) and the measurements obtained from the FOSS. For example, the FOSS measurements and the IMU measurements can be provided to a state estimation unit (e.g., a Kalman filter), which can estimate the position and/or shape of the optical fiber based on those measurements. In some embodiments, the estimates of position are used for navigation of tethered mobile devices.

2015011, Apr 30, 2015

Oct 27, 2014

14/524114

- Sunnyvale CA, US
Eric E. SANBORN - Blacksburg VA, US
Matthew A. CASTELLUCCI - Blacksburg VA, US
Emily E.H. TEMPLETON - Blacksburg VA, US
Naman GARG - Blacksburg VA, US
Nur Aida Abdul RAHIM - Blacksburg VA, US
John J. KUTZ - Blacksburg VA, US
Alexander K. SANG - Christiansburg VA, US

G01B 11/16

73800

A pressure sensing pad includes a flexible planar layer having a two-dimensional sensing area, and an optical fiber embedded in the plane of the flexible planar layer traversing the two-dimensional sensing area in a particular configuration. At least one end of the fiber optic strain sensor has a connector that is connectable to an interferometric-based fiber optic interrogation and processing system. When the connector is connected to the an interferometric-based fiber optic interrogation and processing system and pressure is applied to the pressure sensing pad, a signal from the optical fiber is provided to and processed by the interferometric-based fiber optic interrogation and processing system to determine a two-dimensional pressure map for the two-dimensional sensing area.