title: Wavelength and loss splitting in directly coupled photonic-crystal defect microcavities.
abstract: Coupling between photonic-crystal defect microcavities is observed to result in a splitting not only of the mode wavelength but also of the modal loss. It is discussed that the characteristics of the loss splitting may have an important impact on the optical energy transfer between the coupled resonators. The loss splitting--given by the imaginary part of the coupling strength--is found to arise from the difference in diffractive out-of-plane radiation losses of the symmetric and the antisymmetric modes of the coupled system. An approach to control the splitting via coupling barrier engineering is presented.
authors.affiliation: Ecole Polytechnique Fédérale de Lausanne, Laboratory of Physics of Nanostructures, CH-1015 Lausanne, Switzerland. kirill.atlasov@epfl.ch
authors.forename: Kirill A
authors.initials: KA
authors.lastname: Atlasov
authors.forename: Karl F
authors.initials: KF
authors.lastname: Karlsson
authors.forename: Alok
authors.initials: A
authors.lastname: Rudra
authors.forename: Benjamin
authors.initials: B
authors.lastname: Dwir
authors.forename: Eli
authors.initials: E
authors.lastname: Kapon
mesh_terms: D003198:Computer Simulation; D003460:Crystallization; D004735:Energy Transfer; D004867:Equipment Design; D005336:Fiber Optic Technology; D008027:Light; D015233:Models, Statistical; D008962:Models, Theoretical; D055095:Optics and Photonics; D017785:Photons; D012542:Scattering, Radiation; D013997:Time Factors