| Summary: | 碩士 === 中華科技大學 === 機電光工程研究所碩士班 === 100 === This thesis propose an all-optical logic AND gates that the optimization parameter to setting photonic crystals logical stracture is mainly in principle of the Bragg reflection effect and the electromagentic wave propagation, with the numerical analysis and software simulation. It is able to handle the information in the optical-communication band, where the transmitted prower are all in more than 90%; furthermore, it has advantages that include ultra-wideband, high-ratio, low-loss, and structure simplify conducive to integration and development in optical intregated circuits.
In research, we used the silion material as the dielectric cylinder with the numerical analysis of the Bragg’s law and FDTD(Finite-Difference Time-Domain) is designed in periodic lattice and radius parameter, and able to manufacture photonic crystal nanostructures arranged; depending on the bangap of different refractive index materials forms the optiacl-waveguide, and then, try the simulated and designed all-optiacl logic gates. In the meanwhile, our calculations proved and obtained AND gates at several carrying wavelength in optical-communcation band.
|
|---|
