Title :
A structure for narrow-band coupler type plasmonic filter and wavelength de-multiplexer
Author :
Arefin, Md Shamsul ; Raju, S.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
Abstract :
The authors present a structure for coupler type narrow-band infrared filter and a wavelength de-multiplexer that is tunable by device parameters. Numerical simulation is realized in a two-dimensional (2D) plasmon polariton metal using finite difference time domain (FDTD) method with a perfectly matched layers (PMLs) boundary conditions. The filter can be used as a selective and rejection type plasmonic filter simultaneously; this is a unique feature of this filter structure. The tunable characteristics of the central wavelength of the filter are discussed. By using the filter, design of a 1×3 wavelength de-multiplexer is also outlined.
Keywords :
circuit tuning; demultiplexing equipment; finite difference time-domain analysis; matched filters; optical couplers; optical filters; plasmons; 2D plasmon polariton metal; FDTD method; PMLs boundary condition; central wavelength; coupler type narrow-band infrared filter; device parameter; filter structure; finite difference time domain method; narrow-band coupler type plasmonic filter; numerical simulation; perfectly matched layers; rejection type plasmonic filter; selective type plasmonic filter; tunable characteristics; wavelength demultiplexer; Cavity resonators; Couplers; Optical waveguides; Plasmons; Rectangular waveguides; Time-domain analysis; Filter; Narrow-band; Plasmonic; Wavelength de-multiplxer;
Conference_Titel :
Electrical & Computer Engineering (ICECE), 2012 7th International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4673-1434-3
DOI :
10.1109/ICECE.2012.6471603
