基于PZT的高速扰偏器研究

发布时间：2018-11-16 20:03

【摘要】：偏振效应是光纤通信系统中普遍存在的一个重要问题。扰偏器是测试光纤系统偏振效应的一种重要设备,其原理是通过指定或者随机的方式使输出光的偏振态遍历整个邦加球,得到高度随机的偏振态,以供测试各种偏振相关的效应。研究高速扰偏器具有重要的理论和应用价值。本文的主要工作包括：1.编写MATLAB和单片机程序,实现计算机和单片机的串口通信,研制可编程随机信号发生器,每秒可发送5000个以上的随机数据；2.利用PZT挤压光纤模块制作高速偏振控制器,进行偏振态调节与控制实验研究。结果表明,在邦加球上,三组偏振控制单元的偏振态变化曲线两两正交.输入电压小于4V,满足随机偏振态发生器要求；3.以可编程随机信号发生器与高速偏振控制器为基础,搭建高速扰偏器系统,产生高速随机偏振态,数据分析表明,所产生的偏振态在邦加球上均匀分布,每秒可产生5000个以上的随机偏振态。本文研究结论对高速偏振态分析与高速光纤通信具有重要的参考价值。
[Abstract]:Polarization effect is an important problem in optical fiber communication systems. The polarizer is an important device for measuring the polarization effect of optical fiber system. Its principle is to make the polarization state of the output light traverse the whole Banga sphere in a specified or random way, and obtain highly random polarization state. For testing various polarization-related effects. It has important theoretical and practical value to study high speed polarizer. The main work of this paper includes: 1. Write MATLAB and MCU program, realize the serial communication between computer and single chip, develop programmable random signal generator, can send more than 5,000 random data per second; 2. The high-speed polarization controller is fabricated by PZT extruding fiber module, and the polarization state regulation and control are studied experimentally. The results show that the polarization state curves of the three groups of polarization control units are orthogonal on the Bonga sphere. The input voltage is less than 4 V, which meets the requirements of random polarization state generator. Based on programmable random signal generator and high speed polarization controller, a high speed polarizer system is built to produce high speed random polarization state. More than 5,000 random polarization states can be generated per second. The conclusion of this paper has important reference value for high-speed polarization state analysis and high-speed optical fiber communication.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN929.11

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