ELECTRO-OPTIC CONTROLSYSTEM

摘要

An optic system including: an integrated optical device including an electrically controllable photonic circuit element for receiving an optical signal from at least one optical path and selectively directing the optical signal to a selected one or more of a plurality of optical output paths, and being electrically adjustable between a plurality of states at which the input optical signal is selectively directed to a different output path or combination of output paths; electrically controllable pin diode attenuating elements associated with each of the output paths; and electrical circuitry for controlling the pin diode attenuating elements in co-ordination with the photonic circuit element such that the pin diode attenuating elements associated with the one or more selected paths are in an on state, and the pin diode attenuating elements associated with output paths other than the selected paths are in an off state to substantially extinguish any signal power in those output paths.