An Eight-Channel Demultiplexing Switch Array Using Vertically Coupled Active Semiconductor Microdisk Resonators

We demonstrate a 1.6-nm spectrally spaced eight-channel demultiplexer using active semiconductor microdisk resonators as a platform technology. Taking full advantage of the active microdisks, we are able to switch on and off a resonator individually and tune the resonant wavelength as well by controlling the current injection levels. The use of active microdisks affords narrow spectral linewidth (15 dB) for the demultiplexed output signals.