Plasmonic narrow band pass filter based on planner Lange coupler

In this article, a new plasmonic narrow band pass filter is introduced and optimized versus different dimensions. The filter is based on Lange coupler with open circuit termination in two of its ports. The results are validated by two full-wave solvers. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:446–448, 2014