Electronics Letters · 1982 · 236 citations · 5 references
EngineeringElectrical EngineeringInstrumentationOpticsSensorsInterferometryLaser DiodesOptical InstrumentationOptical SensorsOptical Signal ProcessingOptical SourcesHeterodyne DetectionHeterodyne InterferometryHeterodyne ReceiversInterferometric MeasurementInterferometric SensorsOptical InterferometersOptical Interferometry
A heterodyne signal recovery scheme for interferometric sensors based on frequency ramping of the laser diode source is described. Using a PLL detector, signals in the range 10−4 to 6 rad have been recovered, the system being linear over 5 decades.
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Optical fibre magnetic field sensors
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