Masayuki Morisawa et al 2001 Meas. Sci. Technol. 12 877 doi:10.1088/0957-0233/12/7/322
Masayuki Morisawa1, Yumiko Amemiya1, Hidenori Kohzu1, Chuan Xin Liang2 and Shinzo Muto1
Show affiliationsNew plastic optical fibre sensors for detecting alcohol vapour have been studied. A certain kind of polymer such as a Novolac resin causes swelling when it is exposed to alcohol vapour. This effect produces a change in the polymer refractive index. Based on this principle, the plastic optical fibre (POF) type sensor head was fabricated by coating Novolac-resin and Novolac/Fe:SO complex film as a cladding layer on the plastic fibre core. When this sensor head was exposed to ethanol and methanol vapour, the light intensity passing through the sensor head changed remarkably depending on the vapour pressure. The sensor response was also found to be fast, stable and reproducible.
78.66.Qn Polymers; organic compounds
Soft matter, liquids and polymers
Condensed matter: electrical, magnetic and optical
Issue 7 (July 2001)
Received 11 January 2001, accepted for publication 10 April 2001
Masayuki Morisawa et al 2001 Meas. Sci. Technol. 12 877
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