Polarization-Insensitive Narrow Band Filter with a Symmetrical Metal-Cladding Optical Waveguide

LI Hong-Gen; CAO Zhuang-Qi; LU Hai-Feng; SHEN Qi-Shun

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Polarization-Insensitive Narrow Band Filter with a Symmetrical Metal-Cladding Optical Waveguide

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@@ We demonstrate the promising configurations that permit very narrow spectral filtering. The waveguide filter consists of a glass slab with an anomalous thickness of about 500 μm, which is sandwiched between two pre-coated metal films. By using the free-space coupling technique, a polarization-insensitive and tunable notch filter with a spectral bandwidth as narrow as 0. 08nm has been obtained due to the excitation of ultrahigh-order modes of the symmetrical metal-cladding optical waveguide.

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《中国物理快报：英文版》 |2006年第3期|643-644|共2页
作者
LI Hong-Gen; CAO Zhuang-Qi; LU Hai-Feng; SHEN Qi-Shun;
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Department of Physics, Shanghai Jiao Tong University, Shanghai 200240;

Department of Physics, Shanghai Jiao Tong University, Shanghai 200240;

Department of Physics, Shanghai Jiao Tong University, Shanghai 200240;

Department of Physics, Shanghai Jiao Tong University, Shanghai 200240;

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中图分类物理学;
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Polarization-Insensitive Narrow Band Filter with a Symmetrical Metal-Cladding Optical Waveguide

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