The spectrum form of square-wave controlled laser, optical signal heterodyne detecting device and principle of electrical signal demodulation are considered with emphasis.
文中着重分析了方波控制激光器的频谱形式、光信号外差探测装置和电信号解调原理。
In this spectroscopy, both laser frequency and Zeeman effect of a sample are modulated, and then the signal with high signal to noise will be obtained by double demodulation.
它同时对激光频率和样品的塞曼效应进行调制，然后通过双解调来提取微弱的光谱信号。
A novel method of edge filter demodulation for fiber Bragg grating that use wavelength tunable laser was proposed. Real-time monitoring of the multiple points' dynamic strain could be achieved.
提出了利用波长可调谐激光器对光纤光栅进行边沿滤波解调的新方法，该方法可实现多个测点动态应变的实时监测。
A novel approach for demodulation of fiber grating sensors with high-resolution is proposed based on a tunable fiber laser interrogating the sensing fiber grating.
报道了一种基于光纤激光器波长扫描寻址的高分辨率的光纤光栅传感解调方案。
Optical modulation and demodulation implementation scheme in mobile atmospheric laser communication system are designed.
论文设计了移动大气激光通信系统中的光信号调制解调的实现方案。
The system is based on Michelson interferometer. It USES a fiber laser with narrow linewidth as light source, and adopts homodyne demodulation with phase generated carrier scheme to restore signal.
该系统基于迈克尔逊干涉仪结构，以窄线宽光纤激光器为光源，采用相位载波零差解调方案实现信号的还原。
The paper introduces the working principles of the laser tracking system and the mechanism of the infrared laser hoist positioning system using DSP phase demodulation technology.
介绍了激光跟踪系统工作原理和基于DSP鉴相技术的红外激光矿井提升机位置跟踪系统的实现方法。
The paper introduces the working principles of the laser tracking system and the mechanism of the infrared laser hoist positioning system using DSP phase demodulation technology.
介绍了激光跟踪系统工作原理和基于DSP鉴相技术的红外激光矿井提升机位置跟踪系统的实现方法。
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