modeling and performance enhancement of active hybrid plasmonic electro-optic routing switch

This paper produces a more compact and efficient design for hybrid plasmonic 2 × 2 electro-optic routing switch, with aid of an active material that has an electrically tunable permittivity, and discusses its ability for realizing more advanced structures. the proposed 2 × 2 electro-optic switch, with foot print of 11.6 μm2 and switching time of 0.949 ps, satisfies transmission values (coupling efficiency) less than 7% at off state and greater than 75% at on state at the telecommunication wavelength. this design is used as a base unit to realize two advanced structures: (a) the 3 × 3 switching matrix, with a foot print of 47–49 μm2, which satisfies transmission greater than 60% at on states and transmission less than 10% at off states, and (b) the 4 × 4 switching matrix, with a foot print of 88 μm2, which satisfies transmission greater than 70% at on states and transmission less than 5% at off states. the obtained results have a validation with older researches. a 3d finite-difference time-domain (fdtd) solver is employed to simulate and characterize the realized structures. the components would be useful in the optical interconnect networks, photonic integrated circuits, and signal processing system.