Silicon Photonic Arrayed Waveguide Grating Devices and Sub-Wavelength Structures

We review recent advances in silicon photonic arrayed waveguide grating and sub-wavelength grating devices developed at the NRC Canada. We present three original microspectrometer concepts, namely a compact 50 channel AWG microspectrometer with a spectral resolution of 1 A and a total chip size of 8 x 8 mm", a Fourier- transform AWG with a markedly increased light gathering capability compared to conventional AWG devices, and an AWG with a resolution significantly increased by inserting a triangular photonic crystal waveguide region in the phased array. Various new sub-wavelength grating waveguide structures will also be presented, including monolithic fibre-chip couplers, anti-reflective waveguide facets and mirrors.