Integrated wideband antenna for molecular emission spectroscopy

We demonstrate a versatile, scalable integrated silicon photonics wideband radiation detector leveraging an Nx1 arrayed waveguide grating (AWG) wavelength multiplexer combined with grating antennas, operating over the 1500-1600 nm spectral range. Each AWG input channel is excited by a dedicated phased array of grating antennas designed to couple from a fixed, distinct angle at a certain wavelength. The radiation spectrum of the detected particles is coupled into multiple antenna arrays each designed to selectively receive a certain frequency, and the AWG combines each array’s signal to produce the full spectrum at its output.