Accession Number : ADD011055

Title :   Signal Waveform Detector Using Synthetic FM Demodulation.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Cole,J H

Report Date : 13 Mar 1984

Pagination or Media Count : 6

Abstract : A test signal waveform detector that includes a fiber optic interferometer wherein the phase difference of the two parts of a split laser beam is modulated by the waveform of a sinusoidal test signal which is to be detected and by the waveform of a sinusoidal reference signal, and the two parts of the split beam are recombined and mixed on the face of a photodetector. A signal conversion circuit converts the ac signal that carries the test signal information as an equivalent frequency modulation, and a demodulator extracts the test signal information from the latter ac signal. (Author)

Descriptors :   *Patents, *Demodulation, *Frequency modulation, Interferometers, Fiber optics, Detectors

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE