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IJEMS Vol.13(6) [December 2006] >

Title: Response of thin film Al2O3 optical waveguide to moisture in paper
Authors: Puri, R K
Puri, Vijaya
Issue Date: Dec-2006
Publisher: CSIR
IPC CodeH01F 17/075
Abstract: The response to paper moisture of thin film Al2O3 optical waveguide has been studied. The changes in the transmission of thin film optical waveguide due to changes in relative humidity of paper used as in touch overlay have been reported in this paper. The output decreases due to the overlay of paper. The transmission of the waveguide depends on the moisture content, texture and colour of the paper. Higher moisture content in paper tends to saturate the waveguide output. The sensitivity to moisture changes and type of paper is more for lower moisture content. Hysteresis is observed due to all the papers studied. The larger sensitivity in the lower moisture range may provide a means for detecting and controlling moisture in paper for packing, printing and other applications, as this overlay method requires only a small piece of paper.
Page(s): 549-551
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.13(6) [December 2006]

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