Velocity matched optical gate

摘要

The coupling between a pair of coupled wavepaths (11, 12) is modulated by means of a biasing wave travelling in synchronism with the signal in the coupled wavepaths. In particular, by limiting the coupling to a small interval about the zero crossover point of the biasing signal, subpicosecond pulses can be generated by means of a simple sine wave biasing signal. Such a velocity matched gate can be employed as a pulse generator; a modulator; a multiplexer/demultiplexer; and pulse shape analyzer.