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Title: Fiber-bragg grating-loop ringdown method and apparatus

Abstract

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.

Inventors:
 [1]
  1. Starkville, MS
Issue Date:
Research Org.:
Mississippi State Univ., Starkville, MS (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
983767
Patent Number(s):
7323677
Application Number:
11/181,798
Assignee:
Mississippi State University (Mississippi State, MS)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
DOE Contract Number:  
FC01-04EW54600
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Wang, Chuji. Fiber-bragg grating-loop ringdown method and apparatus. United States: N. p., 2008. Web.
Wang, Chuji. Fiber-bragg grating-loop ringdown method and apparatus. United States.
Wang, Chuji. Tue . "Fiber-bragg grating-loop ringdown method and apparatus". United States. https://www.osti.gov/servlets/purl/983767.
@article{osti_983767,
title = {Fiber-bragg grating-loop ringdown method and apparatus},
author = {Wang, Chuji},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {1}
}

Works referenced in this record:

Fiber loop ringdown for physical sensor development: pressure sensor
journal, January 2004


High-temperature-resistant chemical composition Bragg gratings in Er^3+-doped optical fiber
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Single-cell detection by cavity ring-down spectroscopy
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Fiber ringdown pressure sensors
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Optical fibre long-period grating sensors: characteristics and application
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Cryogenic fiber-Bragg-grating temperature sensors using polyethylene and polystyrene substrates
conference, January 2001


Cavity-enhanced spectroscopy in optical fibers
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Laser diode cavity ring-down spectroscopy using acousto-optic modulator stabilization
journal, October 1997


Intrinsic fiber Fabry–Perot temperature sensor with fiber Bragg grating mirrors
journal, January 2002


Cavity ring‐down optical spectrometer for absorption measurements using pulsed laser sources
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Fiber-optic sensor system for heat-flux measurement
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Optical pressure sensor for an aeronautical application using white light interferometry
conference, September 2000


CW cavity ring down spectroscopy
journal, January 1997


Fiber ringdown temperature sensors
journal, March 2005


An investigation of an optical fibre amplifier loop for intra-cavity and ring-down cavity loss measurements
journal, June 2001


Strain-independent temperature measurement using a type-I and type-IIA optical fiber Bragg grating combination
journal, May 2004


Fiber-loop ring-down spectroscopy
journal, December 2002


Sapphire-fiber-based white-light interferometric sensor for high-temperature measurements
journal, January 2005