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Title: Digital phase demodulation for low-coherence interferometry-based fiber-optic sensors

In this paper, we describe a digital phase demodulation scheme for low-coherence interferometry-based fiber-optic sensors by employing a simple generation of phase-shifted signals at the interrogation interferometer. The scheme allows a real-time calibration process and offers capability of measuring large variations (up to the coherence of the light source) at the bandwidth that is only limited by the data acquisition system. Finally, the proposed phase demodulation method is analytically derived and its validity and performance are experimentally verified using fiber-optic Fabry–Perot sensors for measurement of strains and vibrations.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Optics Communications
Additional Journal Information:
Journal Volume: 411; Journal ID: ISSN 0030-4018
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 47 OTHER INSTRUMENTATION; optical sensors; Fabry-Perot; low-coherence interferometry; phase-shifted detection; instrumentation; metrology
OSTI Identifier:
1424460

Liu, Y., Strum, R., Stiles, D., Long, C., Rakhman, A., Blokland, W., Winder, D., Riemer, B., and Wendel, M.. Digital phase demodulation for low-coherence interferometry-based fiber-optic sensors. United States: N. p., Web. doi:10.1016/j.optcom.2017.11.002.
Liu, Y., Strum, R., Stiles, D., Long, C., Rakhman, A., Blokland, W., Winder, D., Riemer, B., & Wendel, M.. Digital phase demodulation for low-coherence interferometry-based fiber-optic sensors. United States. doi:10.1016/j.optcom.2017.11.002.
Liu, Y., Strum, R., Stiles, D., Long, C., Rakhman, A., Blokland, W., Winder, D., Riemer, B., and Wendel, M.. 2017. "Digital phase demodulation for low-coherence interferometry-based fiber-optic sensors". United States. doi:10.1016/j.optcom.2017.11.002. https://www.osti.gov/servlets/purl/1424460.
@article{osti_1424460,
title = {Digital phase demodulation for low-coherence interferometry-based fiber-optic sensors},
author = {Liu, Y. and Strum, R. and Stiles, D. and Long, C. and Rakhman, A. and Blokland, W. and Winder, D. and Riemer, B. and Wendel, M.},
abstractNote = {In this paper, we describe a digital phase demodulation scheme for low-coherence interferometry-based fiber-optic sensors by employing a simple generation of phase-shifted signals at the interrogation interferometer. The scheme allows a real-time calibration process and offers capability of measuring large variations (up to the coherence of the light source) at the bandwidth that is only limited by the data acquisition system. Finally, the proposed phase demodulation method is analytically derived and its validity and performance are experimentally verified using fiber-optic Fabry–Perot sensors for measurement of strains and vibrations.},
doi = {10.1016/j.optcom.2017.11.002},
journal = {Optics Communications},
number = ,
volume = 411,
place = {United States},
year = {2017},
month = {11}
}