رئوس مطالب
- چکیده
- کلیدواژه ها
- مقدمه
- سازه ها و روش شبیه سازی
- مدولاسیون فاز نور ارسال شده با ریشه ها
- لنز پلاسمونیک با یک همنواگر حلقوی دوار
- شکست پرتو با ریشه های پر شده با مواد غیر خطی
- نتیجه گیری ها
Abstract
Stub and circular ring-shaped plasmonic resonators are introduced into a metal–dielectric–metal (MDM) waveguide array to allow light transmission control. Light focusing and splitting effects are verified by the finite difference time domain method; the simulation results reveal that the resonators can be used for modulating the superposition phase of the interference between the surface plasmon wave (SPW) from the end of the resonator and the passing SPW in the waveguide array. Furthermore, a structure utilizing a stub cavity with nonlinear material to control the phase of the transmitted SPW is proposed; the deflection angle of the light can be controlled by means of the intensity of the incident light. The proposed MDM waveguide array with plasmonic resonators, with its compact size, ease of integration, and high output, certainly has potential for application in nanophotonic circuits.
Conclusions
In this paper, we have presented novel plasmonic beam manipulation structures consisting of MDM waveguide arrays coupled with stub and circular ring resonators. The propagation characteristics of SPWs have been studied by an FDTD method. The simulated results clearly show that the deflection angle and the focus position can be controlled easily through the introduction of the stub and the ring resonator. The demonstrated controllability of the radiation direction and focal length, by varying the intensity of light, opens a way to making feasible active plasmonic devices. Compared with existing plasmonic lenses which can bend light, our designs have the advantages of smaller device size, simplicity and ease of integration, indicating promise for finding potential applications in integrated optical circuits, data storage, and so on.