發(fā)布時(shí)間：2018-11-07 16:56

【摘要】：隨著21世紀(jì)網(wǎng)絡(luò)的快速發(fā)展,光纖通信已成為現(xiàn)代通信網(wǎng)中非常重要的組成部分,該領(lǐng)域研究的下一個(gè)目標(biāo)是大容量、高寬帶的全光網(wǎng)(AON)。當(dāng)前的光網(wǎng)絡(luò)在長(zhǎng)距離傳輸?shù)那闆r下需要光中繼器。光中繼器和光交換節(jié)點(diǎn)中的處理過(guò)程稱(chēng)為“光-電-光”(OEO)的過(guò)程。OEO過(guò)程限制了OTN的傳輸速度,這使得人們急需找到新的方法來(lái)實(shí)現(xiàn)傳輸速率更高的光網(wǎng)絡(luò)。光標(biāo)記交換(OLS)是一個(gè)有前景的解決方案。它使用光學(xué)標(biāo)記攜帶路由信息而不是電子標(biāo)記。有效凈荷攜帶數(shù)據(jù),而標(biāo)記攜帶路由信息。故本文以光標(biāo)記交換傳輸為研究對(duì)象,深入分析相干探測(cè)帶內(nèi)標(biāo)記系統(tǒng),構(gòu)建了40 Gb/s ASK/ASK和40 Gb/s DPSK/ASK帶內(nèi)標(biāo)記交換系統(tǒng)的傳輸模型,并基于軟件VPI transmission maker 8.3實(shí)現(xiàn)仿真工作。論文的內(nèi)容包括:(1)介紹本文的研究背景和光標(biāo)記技術(shù)及其發(fā)展現(xiàn)狀。(2)介紹了光調(diào)制和解調(diào)技術(shù)。對(duì)搭建相干探測(cè)光標(biāo)記交換技術(shù)系統(tǒng)中用到的光調(diào)制基本格式—ASK、PSK,光調(diào)制關(guān)鍵器件—馬赫-曾德?tīng)栒{(diào)制器進(jìn)行了研究分析。另外,重點(diǎn)介紹了在接收端的兩種解調(diào)技術(shù),直接解調(diào)和相干解調(diào)。(3)具體研究了單節(jié)點(diǎn)相干探測(cè)帶內(nèi)光標(biāo)記系統(tǒng)。將上述分析的光調(diào)制格式ASK和DPSK引入到光標(biāo)記交換系統(tǒng)中,作為系統(tǒng)發(fā)送端的載波調(diào)制格式。分別搭建了40 Gb/s ASK/ASK和40 Gb/s DPSK/ASK帶內(nèi)光標(biāo)記交換仿真系統(tǒng),優(yōu)化系統(tǒng)參數(shù),分析了各器件對(duì)帶內(nèi)光標(biāo)記交換系統(tǒng)產(chǎn)生的影響,最后分析了系統(tǒng)的傳輸性能。(4)改進(jìn)了現(xiàn)有的單節(jié)點(diǎn)帶內(nèi)標(biāo)記系統(tǒng)結(jié)構(gòu),基于標(biāo)記棧路由原理,具體分析了40 Gb/s ASK/ASK和40 Gb/s DPSK/ASK多節(jié)點(diǎn)帶內(nèi)標(biāo)記交換系統(tǒng)。仿真分析了系統(tǒng)中各器件對(duì)多節(jié)點(diǎn)標(biāo)記交換系統(tǒng)的影響,包括激光器線寬、光濾波器帶寬、傳輸距離的影響等。最終,根據(jù)優(yōu)化后的參數(shù),驗(yàn)證了多節(jié)點(diǎn)帶內(nèi)標(biāo)記交換系統(tǒng)的最佳傳輸性能。
[Abstract]:With the rapid development of network in the 21st century, optical fiber communication has become a very important part of modern communication network. The next goal of the research in this field is the all-optical network (AON). With large capacity and high bandwidth. Current optical networks require optical repeaters for long distance transmission. The processing process in optical repeater and optical switching node is called "optical-electric-optical" (OEO). The OEO process limits the transmission speed of OTN, which makes it urgent to find new methods to realize the optical network with higher transmission rate. Optical label switching (OLS) is a promising solution. It uses optical tags to carry routing information rather than electronic tags. Valid payload carries data while marking carries routing information. In this paper, the optical label switching transmission is taken as the research object, the coherent detection in-band marking system is deeply analyzed, and the transmission models of 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK in-band label switching systems are constructed. And based on the software VPI transmission maker 8.3 to achieve the simulation work. The main contents of this paper are as follows: (1) introduce the research background, optical marking technology and its development status; (2) introduce the optical modulation and demodulation technology. The basic format of optical modulation used in coherent detection optical label switching system-ASK,PSK, optical modulation key device-Mach-Zehnder modulator is studied and analyzed. In addition, two kinds of demodulation techniques in the receiver, direct demodulation and coherent demodulation, are introduced. (3) the single-node coherent detection in-band optical label system is studied in detail. The optical modulation schemes ASK and DPSK are introduced into the optical label switching system as the carrier modulation format of the system transmitter. The 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK in-band optical label switching simulation systems are built, the system parameters are optimized, and the influence of each device on the in-band optical label switching system is analyzed. Finally, the transmission performance of the system is analyzed. (4) the existing single-node in-band label system architecture is improved. Based on the label stack routing principle, 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK multi-node in-band label switching systems are analyzed in detail. The effects of various devices on the multi-node label switching system are simulated and analyzed, including the influence of the laser linewidth, the bandwidth of the optical filter, the transmission distance, and so on. Finally, according to the optimized parameters, the optimal transmission performance of multi-node in-band label switching system is verified.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TN929.1

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