Ge/SiO2 Photonic Crystal Multichannel Wavelength Filters for Short Wave Infrared Wavelengths
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概要
- 論文の詳細を見る
Ge/SiO2 multilayer type two-dimensional photonic crystals (PhCs) for short wave infrared ($\lambda\sim 2000$ nm) application are demonstrated. The PhCs are fabricated by the autocloning method, which stacks multilayer on a glass substrate with initial line and space pattern by bias-sputtering. We verified their multi-channel wavelength filtering operation. Long wave pass or short wave pass filtering function is observed. Typical PhC dimensions are: Ge and SiO2 thickness is 220 nm, total number of layers is 16, horizontal lattice constant is approximately 500 nm. Transmission losses are the order of 30%, which mainly originates from the absorption of Ge layer. Extinction coefficient ($\kappa$) of the sputtered Ge was estimated to be less than 0.05 for the wavelength range between 1600 and 2400 nm.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-04-15
著者
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Kawashima Takayuki
Photonic Lattice Inc.
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Ohtera Yasuo
Biomedical Engineering Research Organization Tohoku University
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Kawashima Takayuki
Photonic Lattice, Inc., Sendai 980-0845, Japan
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Miura Kenta
Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan
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