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Analysis and Design of Optical Demultiplexer Based on Arrayed Plasmonic Slot Cavities: Transmission Line Model

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5 Author(s)
Bahadori, M. ; Sharif University of Technology, Tehran, Iran ; Eshaghian, A. ; Hodaei, H. ; Rezaei, M.
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A simple yet accurate model for the analysis of coupling between arrayed plasmonic slot cavities and bus/drop metal-dielectric-metal waveguides is presented. The evanescent coupling region is replaced by a transmission line section whose propagation constant and characteristic impedance are given in closed form. The side coupling between the bus waveguide and the slot cavity is modeled together with the direct coupling between the slot cavity and the drop channel. The proposed model is validated by using rigorous numerical method, and is used to design a typical demultiplexer.

Published in:

Photonics Technology Letters, IEEE  (Volume:25 ,  Issue: 8 )