Sol–Gel-Processed SiO2/TiO2/Methylcellulose Composite Materials for Optical Waveguides
SiO2–TiO2–methylcellulose (MC) composite materials processed by the sol-gel technique were studied for optical waveguide applications. Dense, crack-free and homogeneous films as thick as 2 m were obtained via the organic binder MC-assisted sol–gel process and single coating with low-temperature treatment. Light waveguiding in such hybrid film was demonstrated at a wavelength of 650 nm. About 1.1 dB/cm or lower propagation loss for the SiO2 (80 mol%)–TiO2 (20 mol%)–MC (22 wt%) film can be achieved. The effects of thermal treatment on the structure and properties of the gel films were also investigated.
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Document Type: Research Article
Nanotechnology Centre, Institute of Textiles & Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui, China
Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K.
Department of Physics, University of Science and Technology of China, Hefei, Anhui, China
Publication date: November 1, 2005