本文關(guān)鍵詞：基于重構(gòu)等效啁啾技術(shù)的分布反饋式激光器設(shè)計(jì)研究及測(cè)試　出處：《南京大學(xué)》2016年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 分布反饋式半導(dǎo)體激光器 光子集成 重構(gòu)等效啁啾 等效相移 彎曲波導(dǎo) 激光器測(cè)試

【摘要】：隨著時(shí)代的快速發(fā)展,連入通信網(wǎng)絡(luò)的終端設(shè)備在不斷增長(zhǎng),每天傳輸?shù)臄?shù)據(jù)流量也都在在激增,而智慧城市、云計(jì)算與大數(shù)據(jù)、物聯(lián)網(wǎng)、光纖入戶(hù)(FTTH)等領(lǐng)域也都在蓬勃發(fā)展,這些都對(duì)光通信網(wǎng)絡(luò)的帶寬和傳輸速度提出了越來(lái)越高的要求。面對(duì)分立的光學(xué)器件體積大、功耗大等問(wèn)題,光子集成技術(shù)(PIC)即將若干光器件集成在一片基片上,是未來(lái)高速率、大容量的光通信網(wǎng)絡(luò)的重要發(fā)展方向。而半導(dǎo)體激光器作為光源在光通信網(wǎng)絡(luò)中起著重要作用,所以這對(duì)激光器的性能有很高的要求,同時(shí)大部分通信網(wǎng)絡(luò)和普通人息息相關(guān),這就需要考慮到半導(dǎo)體激光器制作成本的因素。通過(guò)重構(gòu)等效啁啾技術(shù)(REC)設(shè)計(jì)半導(dǎo)體激光器,可以提高激光器的性能,同時(shí)可以降低成本,它是通過(guò)設(shè)計(jì)采樣結(jié)構(gòu),利用均勻種子光柵同樣可以實(shí)現(xiàn)一些復(fù)雜結(jié)構(gòu)光柵的性能,因?yàn)椴蓸又芷谕ǔＪ俏⒚琢考?jí)精度,所以重構(gòu)等效啁啾技術(shù)將納米級(jí)別精度的工藝轉(zhuǎn)化成了微米級(jí)別精度的工藝,這大大降低了對(duì)工藝的要求,從而降低了成本。本論文主要是根據(jù)重構(gòu)等效啁啾技術(shù)設(shè)計(jì)了激光器,同時(shí)對(duì)半導(dǎo)體激光器進(jìn)行了測(cè)量。第一章是本論文的緒論部分,主要介紹了光通信發(fā)展歷史、光子集成技術(shù)、半導(dǎo)體激光器發(fā)展歷史、半導(dǎo)體激光器分類(lèi)、半導(dǎo)體激光器工作原理,主要是關(guān)于半導(dǎo)體激光器研究的一些背景。第二章是本論文半導(dǎo)體激光器設(shè)計(jì)研究工作的理論基礎(chǔ),首先介紹了耦合模理論,它是分析一維周期性結(jié)構(gòu)布拉格光柵的基礎(chǔ),傳輸矩陣法通過(guò)將整個(gè)光柵看成很多小段矩陣相乘,可以對(duì)耦合模方程進(jìn)行求解得到反射率和時(shí)延。然后介紹了本論文的基礎(chǔ)重構(gòu)等效啁啾技術(shù),以及重構(gòu)等效啁啾技術(shù)的延伸等效相移技術(shù),它是在采樣周期中引入相移從而等效地在不同級(jí)次的光柵中引入相移。第三章首先介紹了提高單模特性的半導(dǎo)體激光器設(shè)計(jì),它主要是利用彎曲波導(dǎo)實(shí)現(xiàn)了種子光柵左右兩部分的等效周期不一樣,而左右兩部分的采樣周期也不一樣,同時(shí)使用等效相移技術(shù),這樣就可以實(shí)現(xiàn)光柵在+1級(jí)或-1級(jí)透射波長(zhǎng)的重合,同時(shí)零級(jí)波長(zhǎng)變得雜亂無(wú)章,從而提高激光器的單模特性。彎曲波導(dǎo)可以解決制作非均勻種子光柵的工藝難度,同時(shí)也降低了制作的成本。同時(shí)利用該結(jié)構(gòu)設(shè)計(jì)了多波長(zhǎng)激光器陣列,并且研究了彎曲波導(dǎo)連接處的損耗和優(yōu)化問(wèn)題。其次是介紹了抑制空間燒孔效應(yīng)的激光器設(shè)計(jì)工作,它的結(jié)構(gòu)為在等效相移結(jié)構(gòu)的中間一部分區(qū)域沒(méi)有折射率調(diào)制,通過(guò)仿真我們發(fā)現(xiàn)這種結(jié)構(gòu)的中間區(qū)域光場(chǎng)分布沒(méi)有十分聚集,這從而可以達(dá)到抑制空間燒孔效應(yīng)。第四章介紹了激光器的測(cè)量工作和測(cè)量系統(tǒng)的搭建,主要測(cè)量了串聯(lián)可調(diào)諧激光器的光譜、彎曲波導(dǎo)激光器測(cè)試、基于REC技術(shù)設(shè)計(jì)的DFB激光器芯片無(wú)雜散動(dòng)態(tài)范圍(SFDR)和眼圖的測(cè)量。本論文的創(chuàng)新點(diǎn)主要有：第一,利用重構(gòu)等效啁啾技術(shù)和彎曲波導(dǎo)設(shè)計(jì)了光柵左右兩部分等效種子光柵周期不一樣、采樣周期不一樣的結(jié)構(gòu),從而實(shí)現(xiàn)了提高激光器的單模特性；第二,利用重構(gòu)等效啁啾技術(shù)設(shè)計(jì)了中間區(qū)域沒(méi)有光柵的新型半導(dǎo)體激光器,從而實(shí)現(xiàn)了抑制空間燒孔效應(yīng)的目的。
[Abstract]:With the rapid development of the times, even the terminal equipment into the communication network in the growing data traffic every day transmission are also in the surge in smart city, cloud computing and big data, networking, fiber to the home (FTTH) and other fields are booming, increasingly high demands on the optical communication network bandwidth and transmission speed. Face the problem of large volume of discrete optical devices and big power consumption, photonic integration technology (PIC) is a number of optical devices integrated on a semiconductor substrate, is an important development direction of optical communication network in the future high rate and large capacity of the. Semiconductor laser as an important source of light plays an important role in optical communication network. So this requires high performance of laser. At the same time, most communication networks are closely related to ordinary people. So we need to take account of the cost of semiconductor lasers. Through the reconstruction equivalent chirp technology (REC) design of semiconductor laser, can improve the performance of laser, and can reduce the cost, it is through sampling structure design, can achieve the same performance of complex gratings using uniform seed grating, because the sampling period is usually micron precision, so the reconstruction equivalent chirp technology will transform the nanometer level precision technology the process of micron level precision, which greatly reduces the requirement of the process, thereby reducing the cost. The main purpose of this thesis is to design a laser based on the reconstructed equivalent chirp technique and measure the semiconductor laser at the same time. The first chapter is the introduction of this paper. It mainly introduces the development history of optical communication, the technology of photonic integration, the development history of semiconductor lasers, the classification of semiconductor lasers, and the working principles of semiconductor lasers, mainly about the background of semiconductor laser research. The second chapter is the theoretical basis of semiconductor laser design research, first introduced the coupled mode theory, it is the basis of analysis of one-dimensional periodic structure of the Prague grating, transfer matrix method by the grating as many small matrix multiplication, the coupled mode equations are solved by the reflectivity and time delay. Then we introduce the basic reconstruction equivalent chirp technology and the extended equivalent phase shift technique of reconstructed equivalent chirp technology. It introduces phase shift in the sampling period, which is equivalent to introducing phase shift in different grades of grating. The third chapter introduces the improvement of semiconductor laser design single-mode characteristics, it is mainly to achieve the equivalent period of two parts about seed grating is not the same as the bend waveguide, around the two part of the sampling period is not the same, at the same time using the equivalent phase shift technology, which can realize overlap gratings in +1 or -1 transmission wavelength at the same time, the zero order wavelength becomes out of order, so as to improve the single mode laser. The bending waveguide can solve the process difficulty of making non-uniform seed gratings and also reduce the cost of production. At the same time, the multi wavelength laser array is designed by this structure, and the loss and optimization of the junction of the curved waveguide are studied. Then it introduces the design of laser work to eliminate the spatial hole burning effect, its structure for phase shift structure of the middle part in the region without equivalent refractive index modulation, through the simulation we find that the optical field distribution of the middle area of this structure is not gathered, which was to eliminate the spatial hole burning effect. The fourth chapter introduces the establishment of laser measurement and measurement system, a series of laser spectroscopy, laser bending test, waveguide DFB laser based on chip REC technology to design the SFDR measurement (SFDR) measurement and eye. The main innovation points of this paper are: first, the design of the grating around two part equivalent seed grating period is not the same, not the same as the sampling cycle structure using reconstruction equivalent chirp technology and curved waveguide, so it can improve the properties of single-mode laser; second, the new type of semiconductor laser with no grating middle region is designed by using the technology of reconstruction equivalent chirp thus, achieve the purpose of inhibiting the spatial hole burning effect.
【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TN248

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