本文選題：可重構(gòu)光分插復(fù)用器 + 微環(huán)諧振腔��； 參考：《蘭州交通大學(xué)》2017年碩士論文

【摘要】：隨著光通信技術(shù)的發(fā)展,新業(yè)務(wù)不斷涌現(xiàn),推動(dòng)了光網(wǎng)絡(luò)發(fā)生了根本的變化。密集波分復(fù)用光網(wǎng)絡(luò)正向著具有光交換、光路由以及智能波長分配功能的全光網(wǎng)絡(luò)方向發(fā)展。可重構(gòu)光分插復(fù)用器(ROADM)作為全光網(wǎng)絡(luò)中的關(guān)鍵節(jié)點(diǎn)器件,正在向波長可調(diào)諧、抑制串?dāng)_等更高性能的方向發(fā)展,逐漸成為光通信領(lǐng)域研究的熱點(diǎn)。其基本組成單元微環(huán)諧振腔具有功能多、結(jié)構(gòu)簡單、尺寸小、靈敏度高及良好的波長選擇性等優(yōu)點(diǎn),已被廣泛用于設(shè)計(jì)制作光濾波器、光調(diào)制器、波分復(fù)用器和光開關(guān)等光通信器件。微環(huán)諧振腔為設(shè)計(jì)結(jié)構(gòu)緊湊的高集成化可重構(gòu)光分插復(fù)用器提供了一條新的途徑,研究基于微環(huán)諧振腔結(jié)構(gòu)的可重構(gòu)光分插復(fù)用器對(duì)未來全光網(wǎng)絡(luò)的發(fā)展具有重要意義。為了突破傳統(tǒng)結(jié)構(gòu)的光分插復(fù)用器在光傳送骨干網(wǎng)上不能良好的實(shí)現(xiàn)低串?dāng)_、低損耗、可調(diào)諧的特性,所以本文研究了一種改進(jìn)的具有優(yōu)良性能的基于微環(huán)諧振腔結(jié)構(gòu)的可重構(gòu)光分插復(fù)用器。主要研究內(nèi)容和結(jié)果如下:(1)在廣泛閱讀國內(nèi)外文獻(xiàn)的基礎(chǔ)上,總結(jié)目前對(duì)可重構(gòu)光分插復(fù)用器的研究存在調(diào)諧速度不夠快、尺寸大、集成度不高的缺點(diǎn),了解了真正實(shí)際應(yīng)用的高速集成化的ROADM器件并不多。基于當(dāng)今對(duì)微環(huán)諧振腔的研究成為了熱點(diǎn),本課題重點(diǎn)介紹了微環(huán)諧振腔結(jié)構(gòu)的ROADM,對(duì)微環(huán)諧振腔的基本模型、工作原理、性能參數(shù)進(jìn)行了分析,之后運(yùn)用耦合模理論和傳輸矩陣法對(duì)微環(huán)諧振腔結(jié)構(gòu)的ROADM的輸出振幅、輸出光譜、插入損耗、串?dāng)_進(jìn)行了公式推導(dǎo),并數(shù)值模擬分析,為后文的設(shè)計(jì)與優(yōu)化奠定理論基礎(chǔ)。(2)針對(duì)傳統(tǒng)矩形十字波導(dǎo)交叉處存在串?dāng)_和散射損耗的缺點(diǎn),在十字交叉處引入了錐形多模干涉原理,設(shè)計(jì)了錐形多模干涉十字交叉波導(dǎo)。仿真結(jié)果表明該十字波導(dǎo)能實(shí)現(xiàn)尺寸小、低串?dāng)_、低損耗的特性。利用錐形十字波導(dǎo)代替?zhèn)鹘y(tǒng)矩形波導(dǎo),構(gòu)建錐形單環(huán)諧振結(jié)構(gòu)的ROADM模型,并模擬了其輸出光譜、串?dāng)_、輸出功率,仿真結(jié)果表明與傳統(tǒng)結(jié)構(gòu)的相比,該結(jié)構(gòu)的輸出光譜對(duì)稱、諧振峰平坦、串?dāng)_幾乎沒有、輸出功率提高了 16%。說明了采用線性錐形結(jié)構(gòu)能很好的實(shí)現(xiàn)低損耗光傳輸。(3)提出了一種具有優(yōu)良特性的四通道型的光分插復(fù)用器,即基于線性錐形級(jí)聯(lián)四環(huán)結(jié)構(gòu)的ROADM。介紹和分析了四環(huán)結(jié)構(gòu)的ROADM的工作原理和基本功能,并介紹了熱光調(diào)諧原理。運(yùn)用FDTD算法對(duì)傳統(tǒng)四環(huán)結(jié)構(gòu)與線性錐形四環(huán)結(jié)構(gòu)的ROADM特性進(jìn)行分析,仿真結(jié)果表明線性錐形四環(huán)結(jié)構(gòu)的ROADM具有非諧振光弱、箱型波譜響應(yīng)平坦、各信道的插入損耗低和串?dāng)_小等優(yōu)點(diǎn),控制好加熱片的加熱功率,該結(jié)構(gòu)能實(shí)現(xiàn)動(dòng)態(tài)的下載不同波長信號(hào)。因此對(duì)未來集成大規(guī)模的ROADM器件設(shè)計(jì)具有重要的參考價(jià)值。
[Abstract]:With the development of optical communication technology, new services are emerging, which promote the fundamental change of optical network. Dense wavelength division multiplexing (DWDM) optical networks are developing towards all-optical networks with optical switching, optical routing and intelligent wavelength assignment. As a key node device in all optical networks, the reconfigurable optical add-in multiplexer (ROADM) is developing towards higher performance such as wavelength tunability, crosstalk suppression and so on, which has gradually become a hot topic in the field of optical communication. The micro ring resonator, which has many functions, simple structure, small size, high sensitivity and good wavelength selectivity, has been widely used in the design and manufacture of optical filters and modulators. Optical communication devices such as wavelength division multiplexer and optical switch. The microring resonator provides a new way to design a compact and highly integrated reconfigurable optical add / drop multiplexer. It is of great significance to study the reconfigurable optical add / drop multiplexer based on the micro ring resonator structure for the development of all optical networks in the future. In order to break through the characteristics of low crosstalk, low loss and tunability of traditional optical add / drop multiplexer in optical transport backbone network, So an improved reconfigurable optical add-in multiplexer with excellent performance based on the micro-ring resonator structure is studied in this paper. The main research contents and results are as follows: (1) on the basis of extensive reading of domestic and foreign literature, this paper summarizes the shortcomings of the current research on the reconfigurable optical add / drop multiplexer, such as not fast tuning speed, large size and low integration. There are not many high-speed integrated ROADM devices used in real applications. The research of micro ring resonator has become a hot topic in this paper. The basic model, working principle and performance parameters of micro ring resonator are analyzed. Then, the output amplitude, output spectrum, insertion loss and crosstalk of ROADM with micro-ring resonator structure are deduced by coupling mode theory and transfer matrix method. In order to solve the problem of crosstalk and scattering loss in the traditional rectangular cross waveguide, the conical multimode interference principle is introduced and the conical multi mode interference cross waveguide is designed. The simulation results show that the cross waveguide can achieve the characteristics of small size, low crosstalk and low loss. The ROADM model of conical single ring resonant structure is constructed by using conical cross waveguide instead of traditional rectangular waveguide. The output spectrum, crosstalk and output power of the structure are simulated. The simulation results show that the output spectrum of the structure is symmetrical compared with the traditional structure. The resonance peak is flat, the crosstalk is almost no, and the output power is increased by 16%. It is shown that the low loss optical transmission can be realized well by using linear conical structure. A four-channel optical add / drop multiplexer with excellent characteristics is proposed, that is, ROADM based on linear conical cascade four-ring structure. This paper introduces and analyzes the working principle and basic function of four ring structure ROADM, and introduces the principle of thermo-optical tuning. By using FDTD algorithm, the ROADM characteristics of the traditional four-ring structure and the linear conical four-ring structure are analyzed. The simulation results show that the ROADM with the linear conical four-ring structure has a non-resonant light weak, and the box wave spectrum response is flat. With the advantages of low insertion loss and low crosstalk of each channel, the heating power of the heating chip can be controlled well. The structure can dynamically download different wavelength signals. Therefore, it has important reference value for the future integrated large scale ROADM device design.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN929.1

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