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Author Mohamed, R. ♦ Razali, N. ♦ Ehsan, A.A. ♦ Shaari, S.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2004
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Optical polymers ♦ Optical waveguides ♦ Optical materials ♦ Curing ♦ Optical device fabrication ♦ Optical refraction ♦ Temperature ♦ Resists ♦ Optical variables control ♦ Solvents
Abstract In this paper, we present our recent progress on the characterisation and process optimisation of photoresist-like fluorinated acrylate and cyclomer acrylate copolymers. Different acrylate formulations from cyclomer acrylates have been exploited and compared with fluorinated polymer from available sources. Both acrylates show negative thermooptic (TO) effect with temperature. The thermooptic coefficient, dn/dT of the polymers are as high as the order of 10/sup -3/, which is comparable to those of available optical polymers. Higher values of dn/dT are shown by the fluorinated acrylate compared to that of the cyclomer acrylate type. Characterisation of prebaked and UV cured polymer samples had been analysed using FTIR. The time and intensity of UV curing were optimised to obtain waveguide channel of width between 40/spl mu/m and 10/spl mu/m for cyclomer whereas for fluorinated only the UV curing time has been optimised. The development techniques of these acrylates are also different; the cyclomer used the aqueous based developers while the fluorinated acrylate develops use the hydrocarbon solvent. Refractive indices of the cyclomer acrylates is between 1.52-1.53 while the fluorinated type is 1.521. Microstructural channel waveguide had also been analysed via scanning electron microscope (SEM) which shows the channel waveguide structures.
Description Author affiliation: Fac. of Appl. Sci., Universiti Teknologi MARA, Selangor, Malaysia (Mohamed, R.)
ISBN 0780386582
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2004-12-07
Publisher Place Malaysia
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 2.14 MB

Source: IEEE Xplore Digital Library