초록 ▼

A sampler that can be used to sample optical or electrical signals, having an improved sensitivity-resolution product compared to conventional samplers. A coded switched electrode modulator has electrodes that produce polarity reversals in an applied voltage signal in accordance with a pseudorandom

A sampler that can be used to sample optical or electrical signals, having an improved sensitivity-resolution product compared to conventional samplers. A coded switched electrode modulator has electrodes that produce polarity reversals in an applied voltage signal in accordance with a pseudorandom code having small sidelobes. An optical signal is injected into an optical waveguide that is oriented parallel to the electrodes. When the optical signal is proportional to the coded electrode pattern, the device is used as an electrical sampler. When the applied voltage signal is proportional to the coded electrode pattern, the device is used as an optical sampler.

대표청구항 ▼

A sampler comprising: a test input for a signal to be sampled; an output; and modulation means, responsive to a set of R reference signals Rr(t) (r=0, . . . , R-1) and to a test signal S(t) applied to the test input, for producing at the output an output signal O(t) proportional to [Figure] where [8

A sampler comprising: a test input for a signal to be sampled; an output; and modulation means, responsive to a set of R reference signals Rr(t) (r=0, . . . , R-1) and to a test signal S(t) applied to the test input, for producing at the output an output signal O(t) proportional to [Figure] where [8 hr(t)S2(t)]][hr(t)S(t)]denotes the convolution of hr(t) with S(t), where * denotes the correlation of Rr(t) with [[hr(t)S2(t)]][hr(t)S(t)], where hr(t) is the impulse response function of the sampler when S(t) and Rs(t) (for s≠r) are constant and Rr(t) is a delta function, and where [Figure] is substantially equal to a delta function plus an error function that has a peak amplitude much smaller than the integral of the delta function.