Abstract
An interferometer based optical sensor for displacement measurement is reported. This method requires quite simple signal processing as well as least electronic components. Referring to this technique, two photodiodes spatially shifted by 90 degrees were used. The output of photodiodes was converted into rectangular signals which were extracted in LabVIEW using the data acquisition card without using an analog to digital converters (ADC). We have also processed the signals in C++ after acquiring via parallel port. A Michelson interferometer configuration was used to produce linear fringes for the detection of displacements. The displacement less than 100 nm could be measured using this technique.
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Y. N. Ning, K. T. V. Grattan, A. W. Palmer, and B. T. Meggit, “A novel detection scheme for vibration monitoring using optical techniques,” Optics and Lasers in Engineering, vol. 15, no. 2, pp. 115–126, 1991.
J. R. Baker, R. I. Laming, T. H. Wilinshurt, and N. A. Halliwell, “A new high sensitivity laser vibrometer,” Optics and Laser technology, vol. 22, no. 4, pp. 241–244, 1990.
K. Wier, W. J. O. Boyle, B. T. Meggit, A. W. Palmer, and K. T. V. Grattan, “A novel adaptation of the Michelson interferometer for the measurement of vibration,” Journal of Lightwave Technology, vol. 10, no. 5, pp. 700–703, 1992.
C. Shakher, A. L. Vyas, and A. Seth, “Real time monitoring of vibrations using interferometric sensor,” in Proceedings of International Conference on Communications and Signal, vol. 2, pp. 1185–1188, 1997.
S. Prakash, I. P. Singh, and C. Shakher, “Display of tilt information of vibrating object in time average mode using lateral shearing interferometry and interferometric grating,” Optics and Laser Technology, vol. 33, no. 2, pp. 117–120, 2001.
J. J. Dosch and D. M. Lally, “A heterodyne laser interferometer for primary calibration of accelerometers,” in Proceedings of 21st IMAC Conference on Structural Dynamics, Kissimmee, Florida, pp. 977–984, 2003.
O. D. Rochefoucauld, S. M. Kannah, and E. S. Olson, “Recording depth and signal competition in heterodyne interferometry,” Journal of the Acoustical Society of America, vol. 117, no. 3, pp. 1267–1284, 2005.
L. Yarovoi and G. Siegmund, “The effect of three-wave interference in laser Doppler vibrometry,” Measurement Science and Technology, vol. 15, no. 10, pp. 2150–2156, 2004.
C. Rembe and A. Draebenstedt, “Laser-scanning confocal vibrometer microscope: theory and experiments,” Review of Scientific Instruments, vol. 77, no. 8, pp. 083702-1–083702-11, 2006.
M. Bauer, F. Ritter, and G. Siegmund, “High-precision laser vibrometers based on digital Doppler signal processing,” in Proc. SPIE, vol. 4827, pp. 50–61, 2002.
G. Siegmund, “Sources of measurement error in laser Doppler vibrometers and proposals for unified specifications,” in Proc. SPIE, vol. 7098, pp. Y1–Y13, 2008.
L. B. Yuan, “Recent progress of in-fiber integrated interferometers,” Photonic Sensors, vol. 1, no. 1, pp. 1–5, 2011.
Y. J. Rao, “Study on fiber-optic low-coherence interferometric and fiber Bragg grating sensors,” Photonic Sensors, vol. 1, no. 4, pp. 382–400, 2011.
Y. Jiang and W. H. Ding, “Recent developments in fiber optic spectral white-light interferometry,” Photonic Sensors, vol. 1, no. 1, pp. 62–71, 2011.
T. K. Gangopadhyay, “Non-contact vibration measurement based on an extrinsic Fabry-Perot interferometer implemented using arrays of single mode fibres,” Measurement Science and Technology, vol. 15, no. 5, pp. 911–917, 2004.
B. Hussain, M. Ahmed, G. Hussain, M. Saleem, and M. Nawaz, “Analog processing based vibration measurement technique using Michelson interferometer,” Photonic Sensors, DOI: 10.1007/s13320-012-0061-8, 2012.
L. B. Yuan and Y. T. Dong, “Loop topology based white light interferometric fiber optic sensor network for application of perimeter security,” Photonic Sensors, vol. 1, no. 3, pp. 260–267, 2011.
Q. X. Yu and X. L. Zhou, “Pressure sensor based on the fiber optic extrinsic Fabry-Perot interferometer,” Photonic Sensors, vol. 1, no. 1, pp. 72–83, 2011.
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Hussain, B., Muhammad, T., Rehan, M. et al. Fast processing of optical fringe movement in displacement sensors without using an ADC. Photonic Sens 3, 241–245 (2013). https://doi.org/10.1007/s13320-013-0088-5
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DOI: https://doi.org/10.1007/s13320-013-0088-5