Acousto-Optic Spectrum Analyzer: Temporal Response and Detection of Pulsed Signals.
DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
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This report describes the temporal response of an acousto optic spectrum analyzer to pulse modulated cw signals. The detected waveforms from the outputs of a real-time photodector array are analyzed as a function of pulse width, weighting function parameters, and relative photodector to spectral centroid location. The input pulse envelope is modified in the forms of signal duration stretching, the appearance of a flattop, multiple humps, and longer rise and fall times. Various schemes are discussed on the determination of the pulse width from the detected waveform. Keywords Acoustooptic spectrum analyzer Pulsewidth determination Acoustooptic receiver Bragg cells Continous wave signals Canada.
- Acoustooptic and Optoacoustic Devices