Patent ID: 6028424
Filing Date: 2000-02-22
Classification: G02F,G11C

Abstract:
An apparatus for measuring an electrical signal comprising:a) an electro-optic modulator having a modulator transfer function and an inverse transform of the modulator transfer function, the modulator comprising:i) an optical signal input for receiving an input optical signal having an input optical signal intensity;ii) an electrical signal input; andiii) at least one optical signal output that provides at least one modulated optical signal;b) a first detector optically coupled to the optical signal input that generates an electrical signal corresponding to the input optical signal intensity;c) a second detector optically coupled to one of the at least one optical signal output, the second detector generating an electrical signal in response to an optical intensity of the one of the at least one modulated optical signal; andd) a signal processor in electrical communication with the first and second detectors, the signal processor applying the inverse transform of the modulator transfer function and generating an electrical signal in response to the electrical signals generated by the first and second detectors and from the inverse transform of the modulator transfer function, the electrical signal being linearly related to an electrical signal applied to the electrical signal input of the electro-optic modulator.