Electro-optic channelized modulator and receiver

Details Electro-optic channelized modulator and receiver Electro-optic channelized modulator and receiver

1989-12-06

1992-04-14

Smith, Jerry

Boots, shoes, and leggings

364822, 364827, 359245, G06G 702, G02B 2742

Patent

active

051053802

ABSTRACT:
A wideband electrical input signal is applied to a tapped delay line to produce a spatial representation of the input signal distributed along the delay line taps. Inputs of individual elements of a linear electro-optic modulator array are connected to the respective delay line taps, such that the modulator array produces a spatial optical pattern in which the transmittance varies in accordance with the amplitude of the input signal. A laser directs a coherent light beam through the modulator array for modulation by the optical pattern. A Fourier transform lens transforms the modulated light beam into a spatial light distribution pattern in which the light intensity varies in accordance with the amplitudes of the frequency components in the input signal. A photodetector array produces channelized electrical outputs corresponding to portions of the light distribution pattern which themselves correspond to respective ranges of frequencies in the input signal.

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