A novel reflective fiber optic microphone was introduced. It USES a reflective fiber optic sensing probe to realize the outside modulation of sound to light.
一种新型的反射式光纤麦克风，它利用反射式光纤传感探头实现声音对光的外调制。
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Furthermore, the GJ-4 confocal probe uses an avalanche diode with high responsivity. Therefore, it can get better measuring signals from low-reflective surfaces.