Applied Physics Letters · 1995 · 92 citations · 0 references
EngineeringElectrical EngineeringMaterials ScienceOptical MaterialsOpticsPhotonicsOptical ResonatorsOptical WaveguidesPhotonic CrystalsPhotonic Integrated CircuitsPhotonic MaterialsWaveguidesBand GapDefect ModesField ConfinementOptical Band GapPhotonic Band StructurePhotonic Crystal CavitiesPhotonic Crystal WaveguidesResonant Cavities
We introduce and analyze a new type of high-Q microcavity consisting of a channel waveguide and a one-dimensional photonic crystal. A band gap for the guided modes is opened and a sharp resonant state is created by adding a single defect in the periodic system. An analysis of the eigenstates shows that strong field confinement of the defect state can be achieved with a modal volume less than half of a cubic half-wavelength. We also present a feasibility study for the fabrication of suspended structures with micron-sized features using semiconductor materials.