Planar reflection grating wavelength filters in silicon

The design, fabrication, and performance of reflection-type multiplexers and demultiplexers in the silicon-on-insulator material system is discussed. These devices provide a more compact alternative to arrayed waveguide grating filters in planar technologies. Their suitability for application to both dense wavelength-division multiplexing and coarse wavelength-division multiplexing optical communication systems is considered.