All-Optical Diode Action in Quasiperiodic Fibonacci Nanostructures |
| A. Namdara and F. Ebadi-Garjan b
aFaculty of Physics, University of Tabriz, Tabriz, Iran bPhysics Department, Azarbaijan University of Tarbiat Moallem, Tabriz, Iran |
| Received: June 7, 2012 |
| Full Text PDF |
| We theoretically investigate the feasibility of nonreciprocal light propagation by using the unique features of quasiperiodic one-dimensional photonic crystals. The intrinsic spatial asymmetry of the Fibonacci sequence leads to strong non-reciprocal electric field distribution, so the nonlinear transmission becomes sensitive to the propagation direction. In this work we emphasise on bistability and all optical switching where the switching threshold for one propagation direction is lower than that for the other. In addition we demonstrate that this structure exhibits high transmission due to the existence of high transmission resonances in its linear transmission spectrum, and these features allow creating an all-optical diode. |
DOI: 10.12693/APhysPolA.123.45 PACS numbers: 42.65.-k, 42.70.-a, 78.20.-e |