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Structure Tuning of Line-Defect Waveguides Based on Silicon-on-Insulator Photonic Crystal Slabs |
WANG Chun-Xia 1,2;XU Xing-Sheng 1;XIONG Gui-Guang 2;HU Hai-Yang 1,
SONG Qian 1;DU Wei 1;CHEN Hong-Da 1 |
| 1State Key Laboratory Integrated Optoelectronics, Institute of Semiconductor, Chinese Academy of Sciences, Beijing 1000832Department of Physics, Wuhan University, Wuhan 430072 |
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| Cite this article: |
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WANG Chun-Xia, XU Xing-Sheng, XIONG Gui-Guang et al 2007 Chin. Phys. Lett. 24 738-740 |
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Abstract We present fabrication and experimental measurement of a series of photonic crystal waveguides. The complete devices consist of an injector taper down from 3μm into a triangular-lattice air-hole single-line-defect waveguide with lattice constant from 410nm to 470nm and normalized radius 0.31. We fabricate these devices on a silicon-on-insulator substrate and characterize them using a tunable laser source over a wavelength range from 1510nm to 1640nm. A sharp attenuation at photonic crystal waveguide mode edge is observed for most structures. The edge of guided band is shifted about 30nm with the 10nm increase of the lattice constant. We obtain high-efficiency light propagation and broad flat spectrum response of the photonic crystal waveguides.
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| Keywords:
42.70.Qs
42.82.Cr
42.25.Bs
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Received: 12 September 2006
Published: 08 February 2007
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| PACS: |
42.70.Qs
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(Photonic bandgap materials)
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42.82.Cr
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(Fabrication techniques; lithography, pattern transfer)
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42.25.Bs
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(Wave propagation, transmission and absorption)
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