【摘 要】
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Design of nonmagnetic optical isolators integrated with silicon waveguides is important for rapidly growing silicon photonics in optical communications.We intro
【机 构】
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National Laboratory of Solid State Microstructures, and Department of Materials Science and Engineer
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Design of nonmagnetic optical isolators integrated with silicon waveguides is important for rapidly growing silicon photonics in optical communications.We introduce a silicon waveguide consisting of an array of complex sinusoidal-shaped structures that create the designed time-dependent modulation of refractive indices.These time-dependent sinusoidal-shaped structures are engineered to have in-phase mode conversion only in one direction,thus leading to asymmetric optical mode conversion in the silicon waveguide and one-way light transmission with high contrast ratios,confirmed by numerically simulated field maps and calculated transmission at the wavelength of 1550nm.Our design may offer another practical design to the compact chip-scale optical isolators in silicon waveguides.
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