Research Article

Miniaturised Optical Fibre Sensor for Dew Detection Inside Organ Pipes

Figure 1

Sketch of the optoelectronic configuration used to measure the reflectivity changes which occurs at the distal end of the optical fibre. LD: laser diode; MPD: module to monitor the laser diode emission; P: voltage control to keep the laser diode emission constant; PD: hybrid photodetector; OUT1-3: signal output of the light-to-voltage converters.
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