Abstract

The sensor device is required to monitor harmful gases in the environments and industries. Many volatile organic compounds adsorbed on the sensor material will result in changes of the optical properties including the refractive index and the film thickness. This study designed and realized a vapor detection device using the principle of Michelson Interferometer. The laser light beamed with a wavelength of 620 nm was divided by using a beam splitter. Interference occurredwhen the two separated lights were recombined. The phase difference between the two beams determined whether the interference would destruct or construct each other to produce the curved fringes. The vapor samples used in these experiments were ethanol and benzene. The results showed that the ethanol concentration of 1611-32210 ppm produced a fringe shift of 197 pixels, while the concentration of benzene of 964-19290 ppm produced a fringe shift of 273 pixels.

Original languageEnglish
Article number012017
JournalJournal of Physics: Conference Series
Volume853
Issue number1
DOIs
Publication statusPublished - 7 Jun 2017
EventInternational Conference on Physical Instrumentation and Advanced Materials, ICPIAM 2016 - Surabaya, Indonesia
Duration: 27 Oct 2016 → …

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