本文關(guān)鍵詞： 光模塊 激光器 激光驅(qū)動(dòng)器 高速電路 眼圖　出處：《中北大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著信息的快速發(fā)展，人們對(duì)網(wǎng)絡(luò)的要求越來(lái)越高。國(guó)內(nèi)3G、4G和FTTX的崛起，以及光通信技術(shù)的近期快速發(fā)展，使光模塊這個(gè)產(chǎn)業(yè)在近幾年備受關(guān)注。光模塊主要位于光纖通信以太網(wǎng)協(xié)議中的物理媒體相關(guān)層，對(duì)相關(guān)數(shù)據(jù)進(jìn)行發(fā)送和接收。光模塊的發(fā)展將會(huì)越來(lái)越智能化和小型化。光模塊應(yīng)用到光纖通信，對(duì)寬帶接入家庭有很重要的意義。 首先，本文從光纖通信發(fā)展的角度，，分析了光模塊的國(guó)內(nèi)外現(xiàn)狀。結(jié)合現(xiàn)在光模塊的發(fā)展以及光模塊的主要工作原理，選擇合適的器件來(lái)搭建系統(tǒng)。光模塊主要是完成光/電轉(zhuǎn)換和電/光轉(zhuǎn)換功能的一個(gè)產(chǎn)品，光通信技術(shù)的核心器件是光源，因此，本研究會(huì)用到激光器和探測(cè)器，前者是電信號(hào)轉(zhuǎn)為光信號(hào)，后者是光信號(hào)轉(zhuǎn)為電信號(hào)。因此，應(yīng)選擇合適的激光器，并了解激光器的主要工作原理及性能。 其次，掌握光模塊的工作原理并選擇合適的驅(qū)動(dòng)芯片。要使激光器能工作，就要選擇能使激光器工作的芯片，并結(jié)合它的工作原理，選擇合適的驅(qū)動(dòng)芯片。激光驅(qū)動(dòng)芯片為激光器提供驅(qū)動(dòng)電流，使激光器能正常工作，并能傳輸攜帶數(shù)據(jù)的信號(hào)。隨著激光器長(zhǎng)時(shí)間工作以及環(huán)境溫度的影響，激光器的工作電流會(huì)發(fā)生變化，因此需要加入一個(gè)自動(dòng)功率控制功能的電路，使發(fā)射電路正常工作。故本系統(tǒng)結(jié)合這些功能，選擇合適的激光驅(qū)動(dòng)器。 最后，根據(jù)選擇的芯片完成了電路設(shè)計(jì)。在設(shè)計(jì)光發(fā)射電路時(shí)，先研究激光驅(qū)動(dòng)器的電性能特點(diǎn)，根據(jù)它的電性能原理設(shè)計(jì)相關(guān)的電路，并對(duì)其進(jìn)行測(cè)試研究，通過對(duì)它電特性的研究來(lái)進(jìn)一步掌握光性能的工作原理，并針對(duì)激光驅(qū)動(dòng)器的光特性來(lái)設(shè)計(jì)電路，完成系統(tǒng)的設(shè)計(jì)。由于此電路傳輸?shù)男盘?hào)為高速信號(hào)，因此在設(shè)計(jì)電路時(shí)，要考慮高速電路的設(shè)計(jì)關(guān)鍵點(diǎn)，結(jié)合激光二極管的特性，以及激光二級(jí)管與PCB的接口電路對(duì)整個(gè)電路的影響，對(duì)系統(tǒng)進(jìn)行優(yōu)化設(shè)計(jì)，通過反復(fù)的測(cè)試，得到性能良好的電路。對(duì)此系統(tǒng)的電性能和光性能進(jìn)行測(cè)試，記錄測(cè)試波形、電眼圖、光眼圖和相關(guān)數(shù)據(jù)。
[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.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN929.11

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