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。
By replacing the traditional wavelength demodulation with optical power detection technique, the demodulating process is simplified and immune to temperature variation.
利用光强差分检测技术取代传统波长解调方法，简化解调过程的同时传感系统免受温变影响。
The technology of modulation and demodulation is one of the hotspot research in Optical Wireless Communication.
调制解调技术一直是光无线通信领域中的研究热点之一。
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 key problem of FBG sensor study is the optical fiber diffraction grating signal demodulation, namely, the detection of small shifting of wave length.
研究光纤光栅传感器的关键问题是光纤光栅的信号解调，即波长微小移位的检测问题。
Chapter 6 summarizes all the works of the thesis and put forward some Suggestions to research optical PPM modulation and demodulation technique in the future.
第六章综述了本文的研究工作，提出了进一步研究光ppm调制解调技术的设想和建议。
The optical attenuation is used as optical modulator of demodulation system, which solves the problem of optical modulation.
将光衰减器用作解调系统的光调制器，解决了解调系统光信号的调制问题。
The demodulation process of the generated DPASK pulses is investigated and the relationship between optical signal-to-noise ratio (OSNR) penalty and the input ASK power is presented.
我们研究了DPASK脉冲的解调过程以及输入ask信号功率与光信噪比代价之间的关系。
This sensor system simultaneously measures the three parameters using the method of low coherence interferometric signal demodulation combined with optical spectrum measurement of the FBG and EFPI.
利用FBG、EFPI和低相干性干涉信号解调方法实现了用一个传感器同时测量三个参量。
The fiber Fabry-Perot sensor is an important branch of optical fiber sensors, which mainly USES intensity demodulation and phase demodulation.
光纤法布里-珀罗传感器是光纤传感器的一个重要分支，其解调主要采用强度解调法和相位解调法。
The fiber Fabry-Perot sensor is an important branch of optical fiber sensors, which mainly USES intensity demodulation and phase demodulation.
光纤法布里-珀罗传感器是光纤传感器的一个重要分支，其解调主要采用强度解调法和相位解调法。
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