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。
2
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。
3
The technology of modulation and demodulation is one of the hotspot research in Optical Wireless Communication.