METHOD AND APPARATUS FOR ELECTRO-OPTIC DELAY GENERATION

摘要

An optical delay generator includes a waveguide (100) made electro-optically active material (107) which contains a chirped distributed Bragg reflector. An electric field generated across the waveguide (100) causes the index of refraction within the waveguide to change. A change in the index of refraction results in a change in the point at which light is reflected from the chirped distributed Bragg reflector within the waveguide, thus providing a controllable delay for optical pulses (31b). Optical pulse position modulation is provided by using the optical generator to control the delay imparted on each pulse within a stream of equally-spaced optical pulses (31a).