Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors

G A Cranch, G M H Flockhart, C K Kirkendall

Research output: Contribution to journalArticle

12 Citations (Scopus)
59 Downloads (Pure)

Abstract

Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase. These sensitivities have been attributed to birefringence in the various components. In the current work, an analysis of the polarization properties of fiber Bragg grating and tandem-interferometer strain sensors, using Stokes calculus and the Poincare sphere, is presented. The responses of these sensors as a function of the birefringence properties of the various components under different illuminating conditions are derived. The predicted responses demonstrate very good agreement with experimentally measured responses. These models provide a clear insight into the evolution of the polarization states through the sensor networks. Methods to overcome the lead sensitivity are discussed and demonstrated, which yield a differential strain measurement accuracy of 18 n epsilon - rms for a fiber Bragg grating sensor.

Original languageEnglish
Pages (from-to)1787-1795
Number of pages9
JournalJournal of Lightwave Technology
Volume24
Issue number4
DOIs
Publication statusPublished - Apr 2006

Fingerprint

Bragg gratings
interferometers
fibers
sensors
polarization
birefringence
sensitivity
Poincare spheres
strain measurement
calculus
visibility
illuminating
fiber optics
degradation

Keywords

  • sensor phenomena and characterization
  • birefringence
  • bragg gratings
  • capacitive sensors
  • decoding
  • fiber gratings
  • optical fiber polarization
  • optical fiber sensors
  • optical interferometry
  • optical polarization
  • polarization properties
  • interferometrically
  • tandem-interferometer strain sensors

Cite this

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title = "Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors",
abstract = "Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase. These sensitivities have been attributed to birefringence in the various components. In the current work, an analysis of the polarization properties of fiber Bragg grating and tandem-interferometer strain sensors, using Stokes calculus and the Poincare sphere, is presented. The responses of these sensors as a function of the birefringence properties of the various components under different illuminating conditions are derived. The predicted responses demonstrate very good agreement with experimentally measured responses. These models provide a clear insight into the evolution of the polarization states through the sensor networks. Methods to overcome the lead sensitivity are discussed and demonstrated, which yield a differential strain measurement accuracy of 18 n epsilon - rms for a fiber Bragg grating sensor.",
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author = "Cranch, {G A} and Flockhart, {G M H} and Kirkendall, {C K}",
year = "2006",
month = "4",
doi = "10.1109/JLT.2006.871055",
language = "English",
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Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors. / Cranch, G A ; Flockhart, G M H ; Kirkendall, C K .

In: Journal of Lightwave Technology, Vol. 24, No. 4, 04.2006, p. 1787-1795.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors

AU - Cranch, G A

AU - Flockhart, G M H

AU - Kirkendall, C K

PY - 2006/4

Y1 - 2006/4

N2 - Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase. These sensitivities have been attributed to birefringence in the various components. In the current work, an analysis of the polarization properties of fiber Bragg grating and tandem-interferometer strain sensors, using Stokes calculus and the Poincare sphere, is presented. The responses of these sensors as a function of the birefringence properties of the various components under different illuminating conditions are derived. The predicted responses demonstrate very good agreement with experimentally measured responses. These models provide a clear insight into the evolution of the polarization states through the sensor networks. Methods to overcome the lead sensitivity are discussed and demonstrated, which yield a differential strain measurement accuracy of 18 n epsilon - rms for a fiber Bragg grating sensor.

AB - Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase. These sensitivities have been attributed to birefringence in the various components. In the current work, an analysis of the polarization properties of fiber Bragg grating and tandem-interferometer strain sensors, using Stokes calculus and the Poincare sphere, is presented. The responses of these sensors as a function of the birefringence properties of the various components under different illuminating conditions are derived. The predicted responses demonstrate very good agreement with experimentally measured responses. These models provide a clear insight into the evolution of the polarization states through the sensor networks. Methods to overcome the lead sensitivity are discussed and demonstrated, which yield a differential strain measurement accuracy of 18 n epsilon - rms for a fiber Bragg grating sensor.

KW - sensor phenomena and characterization

KW - birefringence

KW - bragg gratings

KW - capacitive sensors

KW - decoding

KW - fiber gratings

KW - optical fiber polarization

KW - optical fiber sensors

KW - optical interferometry

KW - optical polarization

KW - polarization properties

KW - interferometrically

KW - tandem-interferometer strain sensors

U2 - 10.1109/JLT.2006.871055

DO - 10.1109/JLT.2006.871055

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