State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876 School of Science, Beijing University of Posts and Telecommunications, Beijing 100876
Abstract：A compact high-resolution structure for plasmonic wavelength demultiplexers with cascading square resonators is proposed and demonstrated numerically by using the two-dimensional finite element method. It is found that the full width at half maximum of the transmission spectrum can be narrower (～10 nm) than any results reported before. The simulation results can be explained by the temporal coupled-mode theory. This structure can be easily extended to 1×N channels, which has an important role in the wavelength division multiplexing system in nanoscale.
2013, Vol. 30 
