中国激光, 2015, 42 (8): 0805001, 网络出版: 2022-09-24
空间光通信光纤激光器脉冲位置调制特性研究
Research of Pulse Position Modulation Modulation Characteristics of Fiber Laser in Space Optical Communications
光通信 脉冲位置调制特性 光纤激光器 调Q optical communications pulse position modulation characteristics fiber laser Q-switch
摘要
将激光器和脉冲位置调制(PPM)技术作为一个整体分析研究,提出了基于光纤激光器的PPM 特性方面的概念。对脉冲调Q 光纤激光器单脉冲能量、峰值功率、脉冲宽度进行了理论研究,通过仿真得出了脉冲调Q 光纤激光器峰值功率与激光器震荡参数之间的特性曲线,再结合3 种PPM 信号模型分析了光纤激光器的震荡参数N 与3 种PPM 方式的传输速率、所需功率以及所需带宽之间的关系。并通过实验仿真,得出了光纤激光器的抽运功率、初始通过率和腔长对3种PPM 方式的传输速率以及所需带宽的影响。
Abstract
The laser and pulse positon modulation (PPM) modulation technology as a whole is studied. The concept based on PPM characteristics of fiber laser is proposed. Theoretical research of single pulse energy, peak power, pulse width of the Q-switched fiber laser is studied, and characteristic curves between the pulse peak power of Q-switched fiber laser and the laser parameters are obtained through simulation. Combined with three PPM signal model analysises, the relationships between the transmission rate, the required power, the required bandwidth of the three PPM modes and laser parameters N are obtained. From the experiment modulation, the influences of the pumped current, the initial transmittance and the cavity length of the optical laser on the transmission rate and required bandwidth of the three PPM modes are concluded.
王岩, 李洪祚, 张猛, 郝子强. 空间光通信光纤激光器脉冲位置调制特性研究[J]. 中国激光, 2015, 42(8): 0805001. Wang Yan, Li Hongzuo, Zhang Meng, Hao Ziqiang. Research of Pulse Position Modulation Modulation Characteristics of Fiber Laser in Space Optical Communications[J]. Chinese Journal of Lasers, 2015, 42(8): 0805001.