Design of Four-Channel Demultiplexer Based on Whispering-Gallery Mode Resonators

A new four-channel demultiplexer of single photons is proposed, in which four microresonators are utilized to link the drop waveguides and bus waveguide. By adjusting system parameters, crosstalk effect multiple channel frequencies suppressed, peak with high efficiencies these output ports achieved. As 2 × model scalable, proposed structure can provide potential applications designing scalable optical devices.