OPTICAL PROPERTY MODIFICATION OF PMMA BY ION-BEAM IMPLANTATION


Wan Hong, Hyung-Joo Woo, Han-Woo Choi and Young-Suk Kim
Korea Institute of Geology, Mining & Materials, 305-350, Yusong-ku Gajung-dong 30, Taejon, Republic of Korea

Polymeric waveguides were fabricated by proton implantation on Poly(methyl methacrylate) (PMMA). Depth profiles of the refractive indices of modified regions were obtained using new method, and were found to be in good agreement with the stopping power curve of proton in PMMA. It means that the waveguides were made at the depth where the stopping power becomes the maximum value. Waveguide losses were also measured to confirm if this technique could be applied to the fabrication of optical devices. Three-prism method was employed to obtain transmittances of 633 nm light in planar waveguides, and the transmittances in the modified regions kept almost unchanged by implantation. [VASSCAA-1, 8-10th, Sep. 1999, Tokyo]


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