Optimizing band-edge slow light in silicon-on-insulator waveguide gratings
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A systematic analysis of photonic bands and group index in silicon grating waveguides is performed, in order to optimize band-edge slow-light behavior in integrated structures with low losses. A combination of numerical methods and perturbation theory is adopted. It is shown that a substantial increase of slow light bandwidth is achieved when decreasing the internal width of the waveguide and the silicon thickness in the cladding region. It is also observed that a reduction of the internal width does not undermine the performance of an adiabatic taper.
Passoni , M , Gerace , D , O'Faolain , L & Andreani , L C 2018 , ' Optimizing band-edge slow light in silicon-on-insulator waveguide gratings ' , Optics Express , vol. 26 , no. 7 , 315253 , pp. 8470-8478 . https://doi.org/10.1364/OE.26.008470
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DescriptionFunding: European Union Horizon H2020 Programme (H2020-ICT27-2015, COSMICC no. 688516).
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