掺铒光纤放大器的优化设计及实验研究
发布时间：2018-10-24 19:55
【摘要】：促使光通信产业快速发展的核心性器件是掺铒光纤放大器(erbium-doped fiber amplifier,EDFA),亦是全光型光先通信得以实现的不可或缺的主要器件。在最近几年中,随着通信业务多元化的持续发展,通信与信息技术也随之快速发展,与此同时对掺铒光纤放大器(EDFA)的功能特性也提出了更高的要求。在紧密波分多用(dense wavelength division multiplexing,DWDW)系统、有线电视网络(Community Antenna Television,CATV)等系统中,EDFA都起着非常重大的作用。EDFA对网络中的信号进行没有光-电转换过程直接的放大,使得EDFA具有如下优点：高增益；宽频带；小噪声指数；大功率等。 对掺铒光纤放大器的改进设计,在本文中的讨论有下列内容： 1.论文分析讨论了光网络中EDFA的框架构成、组成结构、基关键技术、研究现状以及发展方向。 2.采用粒子群改进算法(PSO)对光络中的S波段、C波段及L波段EDFA进行改进设计,最后得到了具有优良平坦度增益的C波段大增益(25dB)、小噪声(5dB)EDFA和L波段高增益(25dB)、低噪声(5dB)EDFA以及S波段大增益(10dB)、小噪声(5dB)EDFA的改进设计,同时给出了EDFA结构参数的解决方案。 3.对EDFA的平坦化增益现阶段采用的2种办法(改进设计自身平坦增益的EDFA及引进平坦增益增益滤波EDFA)的研讨现状给予了一定描述,并对它们的优缺点分别予以简介。 4.采用DSP芯片技术结合PID算法,实现了掺铒光纤(EDFA)泵浦的增益自动掌握,使得电路具有结构简洁、扩容容易、更加可靠和便于实现等的特点。
[Abstract]:Erbium-doped fiber amplifier (erbium-doped fiber amplifier,EDFA) is the core device to promote the rapid development of optical communication industry. It is also an indispensable part of all-optical pre-communication. In recent years, with the continuous development of the diversity of communication services, communication and information technology has also developed rapidly. At the same time, the functional characteristics of erbium-doped fiber amplifier (EDFA) have been put forward higher requirements. EDFA plays a very important role in the systems such as compact wavelength division multipurpose (dense wavelength division multiplexing,DWDW) system and cable television network (Community Antenna Television,CATV). EDFA amplifies the signal in the network without direct optoelectric conversion process, which makes EDFA have the following advantages: high gain; Wide band; small noise index; high power, etc. The improved design of erbium-doped fiber amplifier is discussed in this paper as follows: 1. In this paper, the structure, key technology, research status and development direction of EDFA in optical network are analyzed and discussed. Particle swarm optimization algorithm (PSO) is used to improve the design of S-band, C-band and L-band EDFA in the optical network. Finally, the improved design of C band large gain (25dB), small noise (5dB) EDFA and L band high gain (25dB), low noise (5dB) EDFA, S-band large gain (10dB) and small noise (5dB) EDFA with excellent flatness gain are obtained. At the same time, the solution of EDFA structural parameters is given. 3. This paper gives a description of the current research status of the two methods of flatting gain of EDFA (improving the design of EDFA with flat gain and introducing EDFA of flat gain filtering), and introduces their advantages and disadvantages respectively. 4. By using DSP chip technology and PID algorithm, the gain of erbium-doped fiber (EDFA) pump is automatically controlled, which makes the circuit structure simple, easy to expand, more reliable and easy to realize.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN722
本文编号：2292393
[Abstract]:Erbium-doped fiber amplifier (erbium-doped fiber amplifier,EDFA) is the core device to promote the rapid development of optical communication industry. It is also an indispensable part of all-optical pre-communication. In recent years, with the continuous development of the diversity of communication services, communication and information technology has also developed rapidly. At the same time, the functional characteristics of erbium-doped fiber amplifier (EDFA) have been put forward higher requirements. EDFA plays a very important role in the systems such as compact wavelength division multipurpose (dense wavelength division multiplexing,DWDW) system and cable television network (Community Antenna Television,CATV). EDFA amplifies the signal in the network without direct optoelectric conversion process, which makes EDFA have the following advantages: high gain; Wide band; small noise index; high power, etc. The improved design of erbium-doped fiber amplifier is discussed in this paper as follows: 1. In this paper, the structure, key technology, research status and development direction of EDFA in optical network are analyzed and discussed. Particle swarm optimization algorithm (PSO) is used to improve the design of S-band, C-band and L-band EDFA in the optical network. Finally, the improved design of C band large gain (25dB), small noise (5dB) EDFA and L band high gain (25dB), low noise (5dB) EDFA, S-band large gain (10dB) and small noise (5dB) EDFA with excellent flatness gain are obtained. At the same time, the solution of EDFA structural parameters is given. 3. This paper gives a description of the current research status of the two methods of flatting gain of EDFA (improving the design of EDFA with flat gain and introducing EDFA of flat gain filtering), and introduces their advantages and disadvantages respectively. 4. By using DSP chip technology and PID algorithm, the gain of erbium-doped fiber (EDFA) pump is automatically controlled, which makes the circuit structure simple, easy to expand, more reliable and easy to realize.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN722
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