光模块的研究与测试

发布时间：2018-02-25 05:01

本文关键词： 光模块激光器激光驱动器高速电路眼图　出处：《中北大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着信息的快速发展，人们对网络的要求越来越高。国内3G、4G和FTTX的崛起，以及光通信技术的近期快速发展，使光模块这个产业在近几年备受关注。光模块主要位于光纤通信以太网协议中的物理媒体相关层，对相关数据进行发送和接收。光模块的发展将会越来越智能化和小型化。光模块应用到光纤通信，对宽带接入家庭有很重要的意义。首先，本文从光纤通信发展的角度，，分析了光模块的国内外现状。结合现在光模块的发展以及光模块的主要工作原理，选择合适的器件来搭建系统。光模块主要是完成光/电转换和电/光转换功能的一个产品，光通信技术的核心器件是光源，因此，本研究会用到激光器和探测器，前者是电信号转为光信号，后者是光信号转为电信号。因此，应选择合适的激光器，并了解激光器的主要工作原理及性能。其次，掌握光模块的工作原理并选择合适的驱动芯片。要使激光器能工作，就要选择能使激光器工作的芯片，并结合它的工作原理，选择合适的驱动芯片。激光驱动芯片为激光器提供驱动电流，使激光器能正常工作，并能传输携带数据的信号。随着激光器长时间工作以及环境温度的影响，激光器的工作电流会发生变化，因此需要加入一个自动功率控制功能的电路，使发射电路正常工作。故本系统结合这些功能，选择合适的激光驱动器。最后，根据选择的芯片完成了电路设计。在设计光发射电路时，先研究激光驱动器的电性能特点，根据它的电性能原理设计相关的电路，并对其进行测试研究，通过对它电特性的研究来进一步掌握光性能的工作原理，并针对激光驱动器的光特性来设计电路，完成系统的设计。由于此电路传输的信号为高速信号，因此在设计电路时，要考虑高速电路的设计关键点，结合激光二极管的特性，以及激光二级管与PCB的接口电路对整个电路的影响，对系统进行优化设计，通过反复的测试，得到性能良好的电路。对此系统的电性能和光性能进行测试，记录测试波形、电眼图、光眼图和相关数据。
[Abstract]:With the rapid development of information, people are demanding more and more network. The rise of 3G 4G and FTTX, as well as the rapid development of optical communication technology, The industry of optical modules has attracted much attention in recent years. The optical modules are mainly located in the physical media related layer in the Ethernet protocol of optical fiber communication. The development of optical module will be more and more intelligent and miniaturized. The application of optical module to optical fiber communication is very important for broadband access home. First of all, from the perspective of the development of optical fiber communication, this paper analyzes the current situation of optical modules at home and abroad, combined with the current development of optical modules and the main working principles of optical modules. The optical module is a product of optical / electrical conversion and electrical / optical conversion. The core of optical communication technology is light source. Therefore, laser and detector will be used in this study. The former is an electric signal to an optical signal, the latter is an optical signal to an electric signal. Therefore, a suitable laser should be selected, and the main working principle and performance of the laser should be understood. Secondly, master the working principle of the optical module and choose the appropriate driving chip. To make the laser work, we must choose the chip that can make the laser work, and combine it with its working principle. Choose the right driver chip. The laser drive chip provides the driving current for the laser, so that the laser can work properly and can transmit the signal carrying data. With the long working time of the laser and the influence of the ambient temperature, The operating current of the laser will change, so it is necessary to add an automatic power control circuit to make the transmitting circuit work normally. Therefore, the system combines these functions to select the appropriate laser driver. Finally, the circuit design is completed according to the selected chip. In the design of the optical emission circuit, the characteristics of the electrical properties of the laser driver are studied first, and the related circuits are designed according to the principle of the laser driver's electrical properties, and the relevant circuits are tested and studied. Through the study of its electrical characteristics, the working principle of optical performance is further grasped, and the circuit is designed according to the optical characteristics of the laser driver to complete the design of the system. Because the signal transmitted by this circuit is a high speed signal, so in the design of the circuit, Considering the key points of high speed circuit design, combining the characteristics of laser diode and the influence of laser secondary transistor and PCB interface circuit on the whole circuit, the system is optimized and tested repeatedly. The electrical and optical properties of the system are tested, and the test waveforms, eye charts, optical ophthalmograms and related data are recorded.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.11

【参考文献】