本文關(guān)鍵詞：高速光通信中多進(jìn)制調(diào)制格式傳輸性能研究　出處：《聊城大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 高速光纖傳輸系統(tǒng) 傳輸損傷 CSRZ-DQPSK CSRZ-8DPSK CSRZ-16DPSK 色散容忍度 非線性容忍度 偏振模色散 傳輸性能分析

【摘要】：如今，隨著互聯(lián)網(wǎng)業(yè)務(wù)的飛速增長和各種新業(yè)務(wù)的不斷出現(xiàn)，使得光通信網(wǎng)絡(luò)的傳輸速率持續(xù)增加。對于單信道40Gbps及其以上的高速光傳輸系統(tǒng)，其核心路由的接口速率將超過100Gbps，原本不需要考慮的非線性效應(yīng)和偏振模色散（PMD）影響變得嚴(yán)重，光信號質(zhì)量惡化，數(shù)據(jù)誤碼率急劇上升，降低了系統(tǒng)的傳輸性能。作為高速光傳輸系統(tǒng)研究的關(guān)鍵技術(shù)之一的新型碼型調(diào)制格式，不僅可以有效地降低傳輸系統(tǒng)的傳輸損傷和提高系統(tǒng)的抗色散能力和抗非線性效應(yīng)能力，而且可以適當(dāng)?shù)母纳聘咚俟馔ㄐ畔到y(tǒng)的頻譜效率和傳輸性能。由于不同的傳輸系統(tǒng)有不一樣的參數(shù)，如速率、長度、頻譜寬度、光纖型號、放大器等，所以不同的傳輸系統(tǒng)有其最為適用的調(diào)制格式。而采用新型的多進(jìn)制調(diào)制格式是解決上述問題的重要手段之一。 本論文主要針對基于相位調(diào)制的多進(jìn)制調(diào)制格式在高速光傳輸系統(tǒng)中的傳輸性能（包括色散容限和非線性容限等）進(jìn)行了系統(tǒng)模型仿真、對比，，同時還將先進(jìn)的編碼調(diào)制技術(shù)與偏振復(fù)用以及FDPC技術(shù)相結(jié)合，搭建了高速長距離光傳輸系統(tǒng)，仿真分析其系統(tǒng)的傳輸性能。所做的主要工作有： 1、研究并熟練掌握基于相位調(diào)制原理的三種多進(jìn)制調(diào)制格式CSRZ-DQPSK/CSRZ-8DPSK/CSRZ-16DPSK的調(diào)制和解調(diào)原理。 2、利用Matlab和OptiSystem光通信仿真軟件搭建高速單信道光傳輸系統(tǒng)模型，對三種多進(jìn)制相位調(diào)制格式在系統(tǒng)中的抗色散能力以及抗非線性能進(jìn)行了仿真分析，指出其在色散容限和非線性容限上的優(yōu)勢和不足。同時還研究了不同的色散補償方式對三種多進(jìn)制調(diào)制格式的影響。 3、在以上工作的基礎(chǔ)上，通過理論分析和軟件仿真，搭建起了100Gbps高速光POLMUX-CSRZ-DQPSK-WDM傳輸系統(tǒng)，并從系統(tǒng)Q值隨3dB帶寬濾波的變化曲線、系統(tǒng)的消光比隨光脈沖時延的變化曲線、系統(tǒng)的差分群時延（DGD）容忍度以及系統(tǒng)的非線性容忍度這四個方面分別對系統(tǒng)的傳輸性能進(jìn)行了研究分析。
[Abstract]:Nowadays, with the rapid growth of Internet services and the emergence of various new services, the transmission rate of optical communication networks continues to increase. For single-channel high-speed optical transmission systems with 40Gbps or more. The interface rate of the core route will exceed 100 Gbps. the nonlinear effect and polarization mode dispersion (PMDs) effect which should not be considered has become serious, the optical signal quality has deteriorated, and the data bit error rate has risen sharply. It reduces the transmission performance of the system. As one of the key technologies in the research of high-speed optical transmission system, it is a new type modulation format. It can not only effectively reduce the transmission damage of transmission system, but also improve the ability of anti-dispersion and anti-nonlinear effect of the system. Because different transmission systems have different parameters, such as speed, length, spectrum width, fiber type, amplifier and so on. Therefore, different transmission systems have their most suitable modulation format, and the adoption of a new multi-ary modulation format is one of the most important means to solve the above problems. In this paper, the transmission performance (including dispersion tolerance and nonlinear tolerance) of the multi-ary modulation scheme based on phase modulation in high-speed optical transmission system is simulated and compared. At the same time, the advanced coding modulation technology, polarization multiplexing and FDPC technology are combined to build a high-speed long distance optical transmission system. The transmission performance of the system is simulated and analyzed. The main work is as follows: 1. Study and master the modulation and demodulation principle of CSRZ-DQPSK/CSRZ-8DPSK/CSRZ-16DPSK based on phase modulation principle. 2. The high-speed single-channel optical transmission system model is built by using Matlab and OptiSystem optical communication simulation software. The anti-dispersion and anti-nonlinear performances of three kinds of multi-ary phase modulation schemes in the system are simulated and analyzed. Its advantages and disadvantages in dispersion tolerance and nonlinear tolerance are pointed out. At the same time, the influence of different dispersion compensation methods on the three multiary modulation schemes is also studied. 3. Based on the above work, a 100Gbps high speed optical POLMUX-CSRZ-DQPSK-WDM transmission system is built through theoretical analysis and software simulation. The Q value of the system varies with the 3dB bandwidth filter and the extinction ratio of the system with the time delay of the optical pulse. The differential group delay (DGD) tolerance of the system and the nonlinear tolerance of the system are studied and analyzed respectively.
【學(xué)位授予單位】：聊城大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 ;Adaptive PMD compensation experiment in 40 Gb/s CSRZ system[J];Optoelectronics Letters;2007年03期

本文編號：1382275