Lasing behavior of an active NIM-PIM directional coupler

摘要: Negative index materials are a subclass of metamaterials which having properties that not found in nature. Present day research regarding indicates they possess remarkable behavior. This thesis is focused on metamaterial-based photonic directional coupler employing negative material (NIM) one its waveguides while the other waveguide consists positive (PIM). A NIM-PIM (DC) exhibits optical feedback even without any actual traditional resonator structure. exists because NIM employed structure’s waveguides. The ability DC to propagate light backward direction possible use for component requiring feedback. We seek study, first time, laser based DC. Coupledmode equations and corresponding solutions have been devised an active NIMPIM gain introduced. An analysis transmittivity