چكيده به لاتين
Abstract:
Surface plasmon polaritons (SPP) are electron density waves excited at the interface between metals and dielectric materials. Surface plasmons have been fully described by Maxwell’s theory and Drude’s model of the optical properties of metals more than a century ago. However, it took until the late 1950s until their existence was observed. Owning to their highly localized electromagnetic fields, they may be used for integrated circuit, transport and manipulation of photons on subwavelength scales. Until now, several plasmonic devices has been proposed such as filters, switches, antennas, sensors etc. Sensors are very important in the field of optical communication and integrated circuit.
In this thesis, two type of plasmonic sensors are proposed and analyzed by couple mode theory. The first sensor is based on a plasmonic MIM waveguide side coupled to a squircle cavity. The second sensor is based on a rectangle cavity coupled to a plasmonic bragg reflector.
The maximum sensivity and FOM have been obtained 1480 nm/RIU and 134.5 RIU-1 for first structure and 1320 nm/RIU and 45.5 RIU-1 for the second one.
Keywords: surface plasmon polaritons, couple mode theory, MIM sensors, plasmonic bragg reflector, MIM bus waveguide
