發(fā)布時(shí)間：2018-03-29 05:23

  本文選題：全光通信　切入點(diǎn)：時(shí)鐘提取　出處：《北京交通大學(xué)》2014年博士論文

【摘要】：互聯(lián)網(wǎng)流量增速迅猛、用戶需求呈現(xiàn)急劇擴(kuò)大化與多媒體化等態(tài)勢(shì)均對(duì)光通信容量、光層功能提出了更高的要求,促使研究者不斷尋求技術(shù)突破。本文圍繞高速光通信中的全光關(guān)鍵技術(shù),結(jié)合國(guó)家973項(xiàng)目“面向光路交換網(wǎng)絡(luò)的光纖器件理論與關(guān)鍵技術(shù)研究”、國(guó)家863計(jì)劃項(xiàng)目“160Gb/s一泵多纖光傳輸技術(shù)的研究”、國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目“全光波長(zhǎng)交換關(guān)鍵技術(shù)研究”等,針對(duì)光時(shí)分復(fù)用(OTDM)及解復(fù)用技術(shù)和傳輸鏈路管理、全光時(shí)鐘提取技術(shù)、光延時(shí)技術(shù)、全光交換等方面進(jìn)行了深入的理論、仿真及實(shí)驗(yàn)研究,取得的主要?jiǎng)?chuàng)新成果如下： 1、采用自制的色散漸減光纖和色散位移光纖進(jìn)行皮秒脈沖壓縮,并利用調(diào)相方式對(duì)受激布里淵散射進(jìn)行了有效抑制,使入纖功率提高約10dB。利用研制的光時(shí)分復(fù)用器產(chǎn)生復(fù)用信號(hào)。采用對(duì)稱的強(qiáng)色散圖譜實(shí)現(xiàn)了100km傳輸鏈路的色散及色散斜率的精確補(bǔ)償,同時(shí)抑制了信道內(nèi)非線性損傷。提出了一種基于級(jí)聯(lián)電吸收調(diào)制器和時(shí)鐘提取模塊的反饋環(huán)結(jié)構(gòu),同時(shí)實(shí)現(xiàn)了時(shí)鐘增強(qiáng)、提取以及解復(fù)用。最終實(shí)現(xiàn)了160Gb/s OTDM信號(hào)100km兩小時(shí)無(wú)誤碼傳輸及解復(fù)用。提出一種通過(guò)設(shè)計(jì)解復(fù)用窗口的匹配光濾波器來(lái)提高OTDM信號(hào)光譜利用率的方案,與原始40Gb/s OTDM信號(hào)相比,光譜利用率提高了約3倍。 2、深入研究了基于受激布里淵散射的全光時(shí)鐘提取技術(shù),建立了數(shù)值模型進(jìn)行結(jié)構(gòu)優(yōu)化。分析了非等幅及非均勻光時(shí)分復(fù)用信號(hào)引入的時(shí)鐘分量增強(qiáng),提出了單路或群路時(shí)鐘的提取方案,并實(shí)現(xiàn)了幀時(shí)鐘提取。研究多路歸零碼信號(hào)的時(shí)鐘提取,理論分析并實(shí)驗(yàn)驗(yàn)證了兩路信號(hào)時(shí)鐘提取的最大頻率間隔,在此基礎(chǔ)上提出一種布里淵增益帶寬的測(cè)量方法。提出了基于半導(dǎo)體放大器和啁啾光纖光柵(CFBG)的改進(jìn)型時(shí)鐘分量增強(qiáng)結(jié)構(gòu),利用建立的數(shù)值模型進(jìn)行結(jié)構(gòu)分析及參數(shù)優(yōu)化,實(shí)驗(yàn)研究時(shí)鐘分量增強(qiáng)和提取結(jié)構(gòu)對(duì)輸入信號(hào)惡化程度的容忍度,實(shí)現(xiàn)了惡化非歸零碼(NRZ)信號(hào)以及兩路NRZ信號(hào)的時(shí)鐘增強(qiáng)并提取。 3、設(shè)計(jì)了一種基于微環(huán)諧振腔的集成波導(dǎo)光延時(shí)線,深入研究微環(huán)數(shù)目及微環(huán)諧振頻率偏差對(duì)延時(shí)特性的影響,采用一種高效的熱光調(diào)諧方案,在保證最大延時(shí)量的同時(shí)能有效提高延時(shí)帶寬,完成微環(huán)光延時(shí)線的制備及封裝測(cè)試,實(shí)現(xiàn)延時(shí)量從213ps到0ps的連續(xù)調(diào)節(jié),同時(shí)可實(shí)現(xiàn)多支路延時(shí)量高精度連續(xù)可調(diào)。 4、提出了一種基于CFBG的改進(jìn)型下路和續(xù)傳結(jié)構(gòu),用于實(shí)現(xiàn)光層組播的光交叉連接功能,實(shí)驗(yàn)表明還可實(shí)現(xiàn)波長(zhǎng)選擇和色散補(bǔ)償。實(shí)現(xiàn)了具有魯棒性、資源可配置性的實(shí)時(shí)視頻和數(shù)據(jù)業(yè)務(wù)的組播。引入了分布式網(wǎng)絡(luò)管理方案,實(shí)現(xiàn)對(duì)基于光路交換的全光網(wǎng)絡(luò)平臺(tái)的具體功能和業(yè)務(wù)的支撐與管理。
[Abstract]:The rapid growth of Internet traffic, the rapid expansion of user demand and multimedia are all put forward higher requirements for optical communication capacity and optical layer functions. This paper focuses on the all-optical key technologies in high-speed optical communication. Combined with the national 973 project "study on the theory and key technology of optical fiber devices for optical path switching network", the national 863 project "study of 160Gb/s-pump multi-fiber optical transmission technology", and the key project of National Natural Science Foundation "all Optical wavelength Interchange" For key technology research, etc., In this paper, the theory, simulation and experiment of optical time division multiplexing (OTDM), demultiplexing and transmission link management, all-optical clock extraction, optical delay and all-optical switching are studied. The main achievements are as follows:. 1. Picosecond pulse compression is carried out by self-made dispersion decreasing fiber and dispersion shifted fiber, and stimulated Brillouin scattering is effectively suppressed by phase modulation. Using the developed optical time division multiplexer to generate multiplexed signals, the symmetrical strong dispersion spectrum is used to accurately compensate the dispersion and dispersion slope of the 100km transmission link. At the same time, the nonlinear damage in the channel is restrained. A feedback loop structure is proposed based on the stage coupling absorber modulator and the clock extraction module, and the clock enhancement is realized at the same time. Finally, the two-hour error-free transmission and demultiplexing of 160Gb/s OTDM signal 100km are realized. A scheme to improve the spectral utilization ratio of OTDM signal by designing a matched optical filter with demultiplexing window is proposed, which is compared with the original 40Gb/s OTDM signal. The spectral utilization ratio was increased by about 3 times. 2. The all-optical clock extraction technique based on stimulated Brillouin scattering (SBS) is studied, and a numerical model is established to optimize the structure. The enhancement of clock components induced by non-equal-amplitude and non-uniform optical time-division multiplexing signals is analyzed. A single or group clock extraction scheme is proposed, and frame clock extraction is realized. The clock extraction of multi-channel return-to-zero code signal is studied. The maximum frequency interval between two signal clock extraction is theoretically analyzed and verified experimentally. On this basis, a Brillouin gain bandwidth measurement method is proposed. An improved clock component enhancement structure based on semiconductor amplifiers and chirped fiber Bragg grating (CFBG) is proposed. The structural analysis and parameter optimization are carried out by using the established numerical model. The tolerance of clock component enhancement and extraction structure to the deterioration of input signal is studied experimentally. The clock enhancement and extraction of the deteriorated NRZ signal and two NRZ signals are realized. 3. An integrated waveguide delay line based on microring resonator is designed. The effects of the number of microrings and the resonant frequency deviation of microring on the delay characteristics are studied in depth, and an efficient thermo-optical tuning scheme is adopted. At the same time, the delay bandwidth can be increased effectively while the maximum delay amount is guaranteed. The fabrication and encapsulation test of the microloop optical delay line can be completed. The delay amount can be continuously adjusted from 213ps to 0ps, and the multi-branch delay can be continuously adjusted with high precision. 4. An improved downpath and continuation structure based on CFBG is proposed, which is used to realize optical cross-connection function of optical layer multicast. Experiments show that wavelength selection and dispersion compensation can also be realized. Resource configurable real-time video and data services multicast. A distributed network management scheme is introduced to support and manage the specific functions and services of the all-optical network platform based on optical path switching.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN929.1

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