Title :
Measurement of harmonic distortion in microwave photodetectors
Author :
Esman, R.D. ; Williams, K.J.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
fDate :
7/1/1990 12:00:00 AM
Abstract :
The use of an offset phase-lock heterodyne system with a large dynamic range (>110 dB) for measuring photodetector (PD) harmonic distortion out to microwave frequencies is discussed. Up to 40 harmonics and second-harmonic levels only 17.8 dB below the fundamental were observed in high-speed PDs with only 1.7 mW incident. Measurements of harmonic power versus incident optical power are reported, along with associated PD bandwidth reduction.<>
Keywords :
demodulation; high-speed optical techniques; microwave measurement; optical modulation; optical variables measurement; photodetectors; 1.7 mW; bandwidth reduction; harmonic distortion; harmonics; high-speed; incident optical power; large dynamic range; microwave photodetectors; offset phase-lock heterodyne system; photodetector harmonic distortion measurement; second-harmonic levels; Distortion measurement; Dynamic range; Frequency measurement; Harmonic distortion; Microwave frequencies; Microwave measurements; Phase measurement; Photodetectors; Power measurement; Power system harmonics;
Journal_Title :
Photonics Technology Letters, IEEE
