Arpad L. Scholtz, Walter R. Leeb, Heinz K. Philipp, Ernst Bonek
Abstract
A homodyne receiver for 10 μm radiation has been built, based on the phase-locked-loop principle. Fast frequency control of the local CO2 laser is achieved by an acoustooptic frequency shifter. Demodulation of a 100 Mbit/s phase-modulated input signal has been demonstrated.
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A homodyne receiver for 10 μm radiation has been built, based on the phase-locked-loop principle. Fast frequency control of the local CO2 laser is achieved by an acoustooptic frequency shifter. Demodulation of a 100 Mbit/s phase-modulated input signal has been demonstrated.
Key concepts: Direct-conversion receiver, Local oscillator, Demodulation, Homodyne detection, Optics, SIGNAL (programming language), Physics, Radiation