الفهرس 
AbstractOnly 14 pages are availabe for public view
 |  | from | 145 |  |  |
| | | from | 145 | | |
Abstract
Modeling of plasmonic Nano-devices for optical communication system has received a great deal of attention over the last decade, due to the improving of numerical modeling methods and the advances in fabrication technologies. Among these, the metal-dielectric-metal plasmonic waveguides have attracted much attention because they strongly confines the propagated surface plasmon modes in the dielectric region with an acceptable propagation length, support modes with high group velocity and deep sub-wavelength over a very wide range of frequencies extending from DC to visible, and are easier to integrate into optical circuits compared with other kinds. Plasmonic slot waveguide is considered a basic structure unit to build the proposed Nano-optical devices which supports the fundamental transverse electric (TE0) mode. This thesis introduces modeling of different types of plasmonic Nano-optical devices that very important for communication system, these include absorption switches, directional coupler, logic gates, and band-reject filter. Modeling of these devices has been achieved using the technique of tuning the absorption coefficient of the active material using an external control signal. The absorption coefficient of that active material can be changed depending on the power level of control signal, and hence the transmission of the structure can be modified.