Fiber-bragg grating-loop ringdown method and apparatus

Wang, Chuji

Fiber-bragg grating-loop ringdown method and apparatus

Patent · Mon Jan 28 23:00:00 EST 2008

OSTI ID:983767

Wang, Chuji ^[1]

Starkville, MS

A device comprising a fiber grating loop ringdown (FGLRD) system of analysis is disclosed. A fiber Bragg grating (FBG) or Long-Period grating (LPG) written in a section of single mode fused silica fiber is incorporated into a fiber loop. By utilizing the wing areas of the gratings' bandwidth as a wavelength dependent attenuator of the light transmission, a fiber grating loop ringdown concept is formed. One aspect of the present invention is temperature sensing, which has been demonstrated using the disclosed device. Temperature measurements in the areas of accuracy, stability, high temperature, and dynamic range are also described.

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Research Organization:: MISSISSIPPI STATE UNIVERSITY

Sponsoring Organization:: USDOE

DOE Contract Number:: FC01-04EW54600

Assignee:: Mississippi State University (Mississippi State, MS)

Patent Number(s):: 7,323,677

Application Number:: 11/181,798

OSTI ID:: 983767

Country of Publication:: United States

Language:: English

References (21)

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