Digital phase demodulation for low-coherence interferometry-based fiber-optic sensors
Journal Article
·
· Optics Communications
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source
- 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
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.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1424460
- Alternate ID(s):
- OSTI ID: 1549160
- Journal Information:
- Optics Communications, Vol. 411; ISSN 0030-4018
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 11 works
Citation information provided by
Web of Science
Web of Science
All-Fiber Phase-Shifted Demodulation System for Fabry-Perot Interferometric Sensors
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conference | January 2019 |
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