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http://dx.doi.org/10.3807/KJOP.2020.31.1.013

Acoustic Sensitivity Analysis of a Ring-type Probe Based on a Fiber-optic Sagnac Interferometric Sensor  

Lee, Yeon-Woo (Department of Measurement Science, University of Science and Technology)
Kwon, Hyu-Sang (Center for Optical Metrology, Korea Research Institute of Standards and Science)
Kwon, Il-Bum (Center for Safety Measurement, Korea Research Institute of Standards and Science)
Publication Information
Korean Journal of Optics and Photonics / v.31, no.1, 2020 , pp. 13-19 More about this Journal
Abstract
To measure underwater acoustics using a fiber-optic Sagnac interferometric sensor, the sensitivities of ring-type probes are investigated by theoretical and experimental studies. A ring-type probe was fabricated by packaging a single-mode fiber wound around an acrylate cylinder of diameter 5 cm with epoxy bond. The probes were prepared as A-type, which was packaged with 46.84 m of sensing optical fiber, and B-type, which was packaged with 112.22 m of sensing fiber. The underwater acoustic test was performed at frequencies of 50, 70, and 90 kHz, and over a range of acoustic pressure of 20-100 Pa, to study the sensitivity. A commercial acoustic generator was located 1 m from the acoustic sensor, such as the ring-type probe or a commercial acoustic sensor. From the experimental test, the acoustic sensitivity of the ring-type probe had different values due to acoustic frequencies, unlike the theoretical prediction. Therefore, the experimental sensitivities were averaged for comparison to the theoretical values. These averaged sensitivities are 25.48 × 10-5 rad/Pa for the A-type probe and 60.79 × 10-5 rad/Pa for the B-type probe. The correction coefficient of Young's modulus c was determined to be 0.35.
Keywords
Sagnac interferometric sensor; Ring-type probe; Single mode optical fiber; Acoustic wave;
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  • Reference
1 G. Wild and S. Hinckley, "Acousto-ultrasonic optical fiber sensors: overview and state-of-the-art," IEEE Sens. J. 8, 1184-1193 (2008).   DOI
2 M. Digonnet, S. Blin, H. K. Kim, V. Dangui, and G. Kino, "Sensitivity and stability of an air-core fibre-optic gyroscope," Meas. Sci. Technol. 18, 3089 (2007).   DOI
3 A. N. Starodumov, L. A. Zenteno, D. Monzon, and E. D. L. Rosa, "Fiber Sagnac interferometer temperature sensor," Appl. Phys. Lett. 70, 19-21 (1997).   DOI
4 H. Y. Fu, H. Y. Tam, L.-Y. Shao, X. Dong, P. K. A. Wai, C. Lu, and S. K. Khijwania, "Pressure sensor realized with polarization-maintaining photonic crystal fiber-based Sagnac interferometer," Appl. Opt. 47, 2835-2839 (2008).   DOI
5 E. Udd, "Fiber-optic acoustic sensor based on the Sagnac interferometer," Proc. SPIE 0425, 90-95 (1983).
6 K. Krakenes and K. Blotekjaer, "Sagnac interferometer for underwater sound detection: noise properties," Opt. Lett. 14, 1152-1154 (1989).   DOI
7 S. Knudsen and K. Blotekjaer, "An ultrasonic fiber-optic hydrophone incorporating a push-pull transducer in a Sagnac interferometer," J. Lightwave Technol. 12, 1696-1700 (1994).   DOI
8 J.-K. Lee, "Sound pressure sensitivity variation of the hollow cylinder type Sagnac fiber optic sensor according to the mandrel install direction and its material," Trans. Korean Soc. Noise. Vibration Eng. 22, 626-633 (2012).   DOI
9 V. S. Sudarshanam and K. Srinivasan, "Static phase change in a fiber optic coil hydrophone," Appl. Opt. 29, 855-863 (1990).   DOI
10 G. W. McMahon and P. G. Cielo, "Fiber optic hydrophone sensitivity for different sensor configurations," Appl. Opt. 18, 3720-3722 (1979).   DOI
11 T. S. Jang, S. S. Lee, I. B. Kwon, W. J. Lee, and J. J. Lee, "Noncontact detection of ultrasonic waves using fiber optic Sagnac interferometer," IEEE Trans. Ultrason. Ferroelectr. Freq. Control 49, 767-775 (2002).   DOI
12 J. Blake, P. Tantaswadi, and R. T. D. Carvalho, "In-line Sagnac interferometer current sensor," IEEE Trans. Power Delivery 11, 116-121 (1996).   DOI
13 J. Posada-Roman, J. A. Garcia-Souto, and J. Rubio-Serrano, "Fiber optic sensor for acoustic detection of partial discharges in oil-paper insulated electrical systems," Sensors 12, 4793- 4802 (2012).   DOI
14 J. F. Nye, Physical properties of crystals: their representation by tensors and matrices (Clarendon Press, Oxford, UK, 1957), pp. 243-253.