초록 ▼

A linearized optical sampler is described. The optical sampler includes an electro-optic modulator having an optical signal input, an electrical signal input, and at least two optical signal outputs that generate at least two modulated optical signals. The optical sampler also includes at least two

A linearized optical sampler is described. The optical sampler includes an electro-optic modulator having an optical signal input, an electrical signal input, and at least two optical signal outputs that generate at least two modulated optical signals. The optical sampler also includes at least two detectors each of which being optically coupled to a respective one of the at least two modulated optical signals. Each detector generates an electrical signal in response to an optical intensity of the respective one of the at least two modulated optical signals. The optical sampler also includes a signal processor electrically connected to each of the at least two detectors. The signal processor applies an inverse transform of the modulator transfer function. The signal processor also generates an electrical signal from the electrical signals generated by the detectors and from the inverse transform that is linearly related to an RF signal electrically that is coupled to the electrical signal input.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for sampling 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 sig

[ What is claimed is:] [1.] An apparatus for sampling 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) a first modulated optical signal output providing a first modulated optical signal having a first modulated optical signal intensity and a second modulated optical signal output providing a second modulated optical signal having a second modulated optical signal intensity, wherein the first and second modulated optical signals are different;b) a first detector optically coupled to the first modulator optical signal output and a second detector optically coupled to the second modulator optical signal output, each of the first and second detectors generating a respective electrical signal in response to the respective optical intensities of the first and second modulator optical signals; andc) a signal processor in electrical communication with the first and second detectors, the signal processor applying inverse transform of the modulator transfer function and generating an electrical signal in response to the inverse transform and the electrical signals generated by the first and second detectors, the electrical signal being linearly related to an electrical signal applied to the electrical signal input.