Disperssion and transmission property of resonator side coupling MDM waveguide based on surface plasmon polaritons

Abstract

Abstract:

A sub-wavelength surface plasmon polariton wavelength filter which consists of an “L” shape cavity and a rectangle cavity coupled to a straight Metal-Dielectric-Metal (MDM) waveguide is proposed and investigated numerically. The simulation results show that the real part and imagine part of effective index changed rapidly at short wavelength and reached a constant at long wavelength，the propagation length increased with the increasing of wavelength and waveguide width，the propagation distance beyond 4um when the width of waveguide is 50nm，which can meet the photonic device；The "L" shape cavity and the rectangle shape cavity side couple reached a similar result as if their length equal，the results expressed that the forbidden band only mentioned with cavity length , not the cavity shape，and it has a guidance meaning in development of integrated photonic device.

Key words: Surface plasmons, Filter, Coupled resonators, Dispersion relation, Filter

CLC Number:

TN252

JIN Gui, HUANG Xiao-yi, HUANG Jian-quan. Disperssion and transmission property of resonator side coupling MDM waveguide based on surface plasmon polaritons[J]. J4, 2015, 32(6): 648-653.

References

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Disperssion and transmission property of resonator side coupling MDM waveguide based on surface plasmon polaritons

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