COMPACT SILICON-BASED INTEGRATED-OPTIC TIME DELAYS

We demonstrate a 3-b (eight-channel) guided-wave optical delay line ne twork in the silicon-on-insulator (SOI) waveguide technology with an i ncremental time delay of 12.3 ps measured over 2-20-GHz frequency rang e, The high-refractive index (compared to silica) combined with tight optical confinement and low propagation loss in the SOI waveguide enab les us to realize a compact time-delay network with fine resolution ti me delays necessary in a high-frequency phased-array antenna.