Title :
One Centimeter Spatial Resolution Temperature Measurements in a Nuclear Reactor Using Rayleigh Scatter in Optical Fiber
Author :
Sang, Alex K. ; Froggatt, Mark E. ; Gifford, Dawn K. ; Kreger, Stephen T. ; Dickerson, Bryan D.
Author_Institution :
Luna Technol., Luna Innovations, Inc., Blacksburg, VA
fDate :
7/1/2008 12:00:00 AM
Abstract :
We present the use of swept wavelength interferometry for distributed fiber-optic temperature measurements in a nuclear reactor. The sensors consisted of 2-m segments of commercially available, single mode optical fibers. The interrogation technique is based on measuring the spectral shift of the intrinsic Rayleigh backscatter signal along the optical fiber and converting the spectral shift to temperature.
Keywords :
Rayleigh scattering; backscatter; distributed sensors; fibre optic sensors; light interferometry; nuclear reactor instrumentation; reflectometry; spectral line shift; spectral methods of temperature measurement; temperature sensors; distributed fiber-optic temperature measurements; interrogation technique; intrinsic Rayleigh backscatter signal; nuclear reactor; optical frequency domain reflectometry; single mode optical fibers; spatial resolution temperature measurements; spectral shift; swept wavelength interferometry; Backscatter; Optical fiber sensors; Optical fibers; Optical interferometry; Optical scattering; Optical sensors; Rayleigh scattering; Spatial resolution; Temperature measurement; Wavelength measurement; Distributed sensing; Rayleigh scatter; nuclear; nuclear reactor; optical fiber; optical frequency domain reflectometry (OFDR); radiation; temperature;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2008.927247
