US 11,899,080 B2
Optical sensing of magnetic fields using magnetically sensitive materials
Paul Ohodnicki, Pittsburgh, PA (US); Derek Lau, San Jose, CA (US); Jagannath Devkota, Pittsburgh, PA (US); Michael McHenry, Pittsburgh, PA (US); Alex Leary, Pittsburgh, PA (US); Richard Beddingfield, Raleigh, NC (US); and Michael Buric, Morgantown, WV (US)
Assigned to United States Department of Energy, Washington, DC (US)
Filed by United States Department of Energy, Washington, DC (US)
Filed on Jul. 19, 2021, as Appl. No. 17/379,389.
Application 17/379,389 is a continuation in part of application No. 16/123,786, filed on Sep. 6, 2018, granted, now 11,067,458.
Claims priority of provisional application 62/606,160, filed on Sep. 6, 2017.
Claims priority of provisional application 62/606,015, filed on Sep. 6, 2017.
Prior Publication US 2022/0003826 A1, Jan. 6, 2022
Int. Cl. G01R 33/032 (2006.01)
CPC G01R 33/032 (2013.01) 25 Claims
OG exemplary drawing
 
1. A method for measuring the magnetic field of an electromagnetic component comprising:
instrumenting one or more portions of an electromagnetic component by placing an optical fiber in electromagnetic communication with the one or more portions of said electromagnetic component, wherein the optical fiber is coated with a magnetically sensitive material comprising a material having a magnetic field dependent electronic conductivity;
energizing the electromagnetic component;
interrogating the optical fiber using light and an optical detector; and
determining changes in the magnetic field incident on the optical fiber based on the detected changes in the light received by the optical detector.