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Quadrature phase-shifted, extrinsic Fabry–Perot optical fiber sensors
Abstract
We demonstrate the operation of a quadrature phase-shifted extrinsic Fabry-Perot fiber-optic sensor for the detection of the amplitude and the relative polarity of dynamically varying strain. Two laterally displaced single-mode fibers inserted within a hollow silica tube form the 90 degrees phase-shifted sensing system. A multimode fiber, placed in the tube facing the two fibers, acts as a reflector, thereby creating an air gap that acts as a Fabry-Perot cavity. A theoretical description of the sensor is given, and its operation as a dynamically varying strain sensor is described. Strain sensitivities of 5.54 degrees phase shift/microstrain cm(-1) are obtained.
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Citations
Cited by
High-spatial-resolution distributed strain measurement in optical fiber with Rayleigh scatter
Froggatt, M., & Moore, J. (1998) · Applied Optics · doi:10.1364/ao.37.001735 · Cited by 788
Iqbal, M., Gleeson, M. A., Spaugh, B., Tybor, F., Gunn, W. G., Hochberg, M., Baehr-Jones, T., Bailey, R. C., & Gunn, L. C. (2010) · IEEE Journal of Selected Topics in Quantum Electronics · doi:10.1109/jstqe.2009.2032510 · Cited by 551
Structural Control: Past, Present, and Future
(1997) · doi:10.1061/(asce)0733-9399(1997)123:9(897
Metadata
- Authors
- Murphy, K. A., Gunther, M. F., Vengsarkar, A. M., & Claus, R. O.
- Venue
- Optics Letters
- Publisher
- Optica Publishing Group
- Published
- 1991-02-15
- Volume
- 16
- Issue
- 4
- Pages
- 273
- ISSN
- 0146-9592 (ISSN-L)
- 1539-4794
- OpenAlex
- W2084627581
- Cited by
- 421
- References
- 0
- FWCI
- 19.36
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Quadrature phase-shifted, extrinsic Fabry–Perot optical fiber sensors. https://app.cochat.ai/papers/10.1364/ol.16.000273
- The paper
- Murphy, K. A., Gunther, M. F., Vengsarkar, A. M., & Claus, R. O. (1991). Quadrature phase-shifted, extrinsic Fabry–Perot optical fiber sensors. Optics Letters. https://doi.org/10.1364/ol.16.000273
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