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7 March 2005 On-chip silicon-based waveguide with light guiding in low-index core materials
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A new on-chip silicon-based Bragg cladding waveguide with full CMOS compatibility is developed. This novel optical waveguide has a low refractive index core (SiO2) surrounded by a 1D photonic crystal cladding. The cladding consists of several dielectric bilayers, where each bilayer consists of a high index-contrast pair of layers of Si and Si3N4. This new waveguide guides light based on omnidirectional reflection, reflecting light at any angle or polarization back into the core. Its fabrication is fully compatible with current microelectronics processes. In principle, a core of any low-index material can be realized with our novel structure, including air. Potential applications include tight turning radii, high power transmission, nonlinear properties engineering and biomaterials sensors on silicon chip.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yasha Yi, Peter Bermel, Shoji Akiyama, Xiaoman Duan, and Lionel C. Kimerling "On-chip silicon-based waveguide with light guiding in low-index core materials", Proc. SPIE 5730, Optoelectronic Integration on Silicon II, (7 March 2005);

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