| 摘要 |
The invention provides a waveguiding device and a method for guiding electromagnetic (EM) waves, in particular surface plasmon polaritons (SPPs), using strongly scattering random media exhibiting light localization. Also, the invention provides a cavity for providing resonance conditins for EM waves, in particular surface plasmon polaritons using strongly scattering random media exhibiting light localizatin. In a strongly scattering random medium with a high enough density of scatterers (so that the average distance between scatterers is smaller than the wavelength), EM waves can only ecist in localized modes and can therefore not propagate. By forming regions free from scatterers in the regins with randomly distributed scatterers, the localization effects in scattering media can be utilized to guide propagating modes in these regions. The invention can be used to form compact integrated optical components and circuits. |
