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We experimentally demonstrate a photonic crystal microcavity biosensor with 1pM sensitivity. Radiation loss engineering for high Q and increased mode overlap with analyte are combined to achieve the highest sensitivity in silicon-on-insulator platform.
A novel nanophotonic waveguide for light confinement in low-index media is reported in this paper. Waveguide modal properties have been evaluated by the 3D Finite Element Method. Dependence of both confinement factor and propagation length on waveguide size has been investigated. Finally, waveguide group velocity dispersion and waveguide sensitivity have been calculated. The numerical results we have...
In the last few years, a significant research effort has been spent on both single ring resonators coupled to straight bus waveguides and multi-ring coupled resonators. In this paper main physical phenomena occurring in those structures and their most promising potential applications are briefly reviewed, with particular attention to the recent advances. Spectral properties of coupled rings are discussed...
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