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Fiber Loop Ringdown — a Time-Domain Sensing Technique for Multi-Function Fiber Optic Sensor Platforms: Current Status and Design Perspectives

Journal Article · · Sensors
DOI:https://doi.org/10.3390/s91007595· OSTI ID:1628575
 [1]
  1. Mississippi State Univ., Starkville, MS (United States). Dept. of Physics. Inst. for Clean Energy Technology; DOE/OSTI

Fiber loop ringdown (FLRD) utilizes an inexpensive telecommunications light source, a photodiode, and a section of single-mode fiber to form a uniform fiber optic sensor platform for sensing various quantities, such as pressure, temperature, strain, refractive index, chemical species, biological cells, and small volume of fluids. In FLRD, optical losses of a light pulse in a fiber loop induced by changes in a quantity are measured by the light decay time constants. FLRD measures time to detect a quantity; thus, FLRD is referred to as a time-domain sensing technique. FLRD sensors have near real-time response, multi-pass enhanced high-sensitivity, and relatively low cost (i.e., without using an optical spectral analyzer). During the last eight years since the introduction of the original form of fiber ringdown spectroscopy, there has been increasing interest in the FLRD technique in fiber optic sensor developments, and new application potential is being explored. This paper first discusses the challenging issues in development of multifunction, fiber optic sensors or sensor networks using current fiber optic sensor sensing schemes, and then gives a review on current fiber optic sensor development using FLRD technique. Finally, design perspectives on new generation, multi-function, fiber optic sensor platforms using FLRD technique are particularly presented.

Research Organization:
Savannah River Site (SRS), Aiken, SC (United States); Mississippi State Univ., Starkville, MS (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF)
Grant/Contract Number:
AC09-08SR22470
OSTI ID:
1628575
Journal Information:
Sensors, Journal Name: Sensors Journal Issue: 10 Vol. 9; ISSN SENSC9; ISSN 1424-8220
Publisher:
MDPI AGCopyright Statement
Country of Publication:
United States
Language:
English

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Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy journal March 2010
Fiber Loop Ringdown Sensor for Potential Real-Time Monitoring of Cracks in Concrete Structures: An Exploratory Study journal December 2012
Frequency-Shifted Interferometry — A Versatile Fiber-Optic Sensing Technique journal June 2014
Multipoint Fiber Loop Ringdown Sensors for Large Strain Measurement Using Frequency-Shifted Interferometry journal July 2019
Analysis of amplification in a fiber ring resonator with a fabry-perot cavity journal August 2018
A fiber Bragg grating sensor for detection of liquid water in concrete structures journal April 2013
Cavity-Enhanced Spectroscopy in Condensed Phases: Recent Literature and Remaining Challenges journal January 2017
A voltage measurement system based on fiber loop cavity ring-down technology using polymer dispersed liquid crystal film as sensing device journal May 2017
Fiber loop ring-down cavity integrated U-bent single-mode-fiber for magnetic field sensing journal January 2016