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PRESSURE SENSING USING PHASE MODULATION ON POLYMER [PMMA] | ||
| Iraqi Journal of Science | ||
| Article 1, Volume 52, Issue 4, 2011, Pages 475-483 | ||
| Authors | ||
| KH. I. HAJIM; ; SHATHA M. A. AL; N. M. Hassan | ||
| Abstract | ||
| The effect of pressure, applied to PMMA sample, on Mach -Zender interference pattern has been studied. The effects of length, depth and height of the PMMA samples on the resulting number of fringes are investigated. The results of the experiments show almost a linear behavior between the numbers of displaced fringes and the displacement of the PMMA molecules with the applied pressure in all cases. Finally, comparing the experimental with the theoretical results, it is found that, there is a good agreement, in most cases, between them provided introducing a correction factor which is found to be equal approximately 3.This effect can be used as a pressure sensor. | ||
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