期刊
OPTICS EXPRESS
卷 19, 期 22, 页码 21707-21716出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.19.021707
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- Air Force Office of Scientific Research [FA9550-10-1-0417]
Using analysis and numerical simulation, we have investigated near-infrared and mid-infrared second-harmonic generation (SHG) and sum frequency generation (SFG) in crystal silicon (SOI) waveguides that possess a strong second-order nonlinear susceptibility by virtue of a Si3N4 straining layer applied directly to the top surface of the waveguide. This layer induces anisotropic compressive strain in the waveguide core. Using the technique of TE/TM mode birefringence, we have derived waveguide geometries for both slab and strip channel waveguides that offer perfect phase matching of three lightwaves for SHG/SFG along a uniform waveguide, thereby offering the prospect of efficient wavelength conversion in monolithic silicon photonics. (C) 2011 Optical Society of America
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