Optical time-division demultiplexing using second-order-optical nonlinear effects

A novel scheme using second-order-optical nonlinear effects for optical time-division demultiplexing is proposed. This scheme is all-optical, and has potential bandwidth on the order of tera (1012) Hz. A prototype demultiplexer using this scheme has been demonstrated, achieving bit rate capacity of 100 Gb/s and crosstalk of −20 dB. This scheme could be realized in a compact form with further advances in nonlinear-waveguide devices and high-peak power semiconductor lasers.