چكيده به لاتين
Switches are the cornerstone of every Integrated Circuit (IC). As Photonics permeated the data-processing field, the ICs’ infrastructures have experienced a transition from electronics to optics; hence, employing optical switches has inevitably prevailed their electronic counterparts. All-optical switches lie at the heart of modern Photonic ICs (PICs) and, unlike other switches, are destitute of any electronic division. In these switches, optical pulse transmission is controlled by a second optical pulse, and in this case, the responsivity would, by far, be ameliorated in comparison with other optical switches. Hitherto, proposed all-optical switches are mostly based on Fiber-Optics or simply possess highly nonlinear media. Not only do such devices suffer from numerous technical and structural issues, they also confront bandwidth limitations.
In this thesis, we are to restrict ourselves to a new type of all-optical switches, in which quantum dots (QDs) act as the main active medium. Investigating the energy transfer between these QDs, we scrutinize any other involving quantum phenomena as well. In doing so, we discuss the radiation beam attenuation and amplification, upon propagating the switch. Optical Bistability (OB) and Optical Multistability (OM) will also be studied thoroughly, in order to demonstrate our proposed switch remarkability.
Analytic calculations, adopting minimum approximations, using density matrix approach, including all decay processes and resonant transitions are the primary theoretical advantages of the proposed project. Moreover, synthesizability, cost-effective architecture and wide bandwidth are considered to be the assets of this switch, and thus, make it superior to the other proposed designs.
