A heterodyne interference is caused by a frequency modulation of a laser diode (LD) with a ramp injection current, and a linear phase detection is realized.
传感器利用注入结电流直接调频的半导体激光(LD)产生外差干涉，从而实现了干涉相位的线性检测。
The design of a laser diode(LD) driver that can generate multi-waveforms for the modulation of drive current was present in this paper.
设计了一种能对输出电流实现多种波形调制的半导体激光二极管（LD）驱动电源。
Due to the excellent modulation characteristics of laser diode (LD), the infused current of the LD is modulated to make the intensity of the laser beam change with the modulation signal.
本文利用半导体激光器良好的调制特性，对其注入电流进行调制，使激光器输出光强随调制信号变化。
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