Design of all-optical switch using Kerr nonlinearities and dipole induced(DIT) transparency with 5-level nanocrystals

We propose a novel two state and all-optical controllable switch using DIT, Kerr effect and interaction between quantum dots (QD) with quantum electrodynamics cavity (CQED).The two state and all-optical controllable switch is coupled to photonic waveguide from a rapid nonlinear environment (photonic crystal) and CQED. We consider the nanocrystal which are doped tocrystal photonic cavity as a 5-level atomic system then design the proposed all-optical switch with quantumatic methods. We Wright Hamiltonian of the system and realize the dynamic equation then we show the optical switching operation by calculating the transition probability for two waveguides with simulations in MATLAB. Simulation results were different with 4-level nanocrystals. In this paper by choosing the proper values for basic parameters an improved all-optical switch were obtained for example the switching speed is increased 7 times rather than previous designs with first control field, 75% with second control field and 60% with third control field for intended 5-level atomic system

کلیدواژه ها:

all-optical switch ، EIT