【摘要】：信息交流在人們工作、生活和學(xué)習(xí)中發(fā)揮著越來越重要的作用。在未來的光通信網(wǎng)中,制作工藝、調(diào)制格式簡(jiǎn)單,波長(zhǎng)可調(diào)諧,具有良好傳輸性能的半導(dǎo)體激光器將是必不可少的器件。直接幅度調(diào)制和電吸收調(diào)制以及馬赫-曾德爾電光相位調(diào)制等外調(diào)制方式相比,是最簡(jiǎn)單、成本最低的一種調(diào)制格式。然而,半導(dǎo)體激光器的直接幅度調(diào)制通常伴隨著人們不希望具有的正頻率啁啾現(xiàn)象。調(diào)制信號(hào)在1550nm標(biāo)準(zhǔn)正色散單模光纖中傳輸時(shí),正頻率啁啾會(huì)使信號(hào)的脈沖展寬,這將嚴(yán)重限制光纖通信系統(tǒng)的傳輸速率和傳輸距離。人們渴望得到可以在密集波分復(fù)用城域網(wǎng)使用的具有波長(zhǎng)可調(diào)諧功能和負(fù)啁啾特性的光發(fā)射機(jī)。本文首次發(fā)現(xiàn)并證實(shí)了直接調(diào)制可調(diào)諧半導(dǎo)體激光器的負(fù)啁啾現(xiàn)象。本文研究的多電極結(jié)構(gòu)的直接調(diào)制可調(diào)諧V型腔激光器,在調(diào)制過程中,其有源區(qū)的載流子密度與輸出光功率發(fā)生了巧妙地反向變化。因此,V型腔激光器輸出的光信號(hào)具有負(fù)啁啾特性,從而實(shí)現(xiàn)了人們期盼已久的愿望。本文首先用時(shí)域行波模型模擬分析了直接調(diào)制過程中V型腔激光器的載流子密度與輸出光功率之間的動(dòng)態(tài)變化關(guān)系,從理論上說明了負(fù)啁啾的正確性；其次用光帶通濾波方法測(cè)量了V型腔激光器的時(shí)域動(dòng)態(tài)啁啾,從實(shí)驗(yàn)上測(cè)得了負(fù)啁啾結(jié)果,得到了與模擬分析一致的結(jié)論；最后分析了V型腔激光器的負(fù)啁啾特性對(duì)光信號(hào)在G.652標(biāo)準(zhǔn)單模光纖中色散的部分補(bǔ)償作用,進(jìn)一步證實(shí)了V型腔激光器的負(fù)啁啾特性。具有制作簡(jiǎn)單、結(jié)構(gòu)緊湊、波長(zhǎng)可調(diào)諧和直接調(diào)制負(fù)啁啾特性的V型腔激光器在未來光通信網(wǎng)中必將會(huì)有廣闊的應(yīng)用前景。
[Abstract]:Information exchange plays a more and more important role in people's work, life and study. In the future optical communication networks, semiconductor lasers with simple modulation format, tunable wavelength and good transmission performance will be essential devices. Compared with direct amplitude modulation (DAM), electroabsorption modulation (EAM) and Mach Zehnder electro-optic phase modulation (EOPM), it is the simplest and least cost modulation scheme. However, the direct amplitude modulation of semiconductor laser is usually accompanied by the chirp of positive frequency which people do not want. When the modulated signal is transmitted in the 1550nm standard normal-dispersion single-mode fiber, the positive frequency chirp will widen the pulse of the signal, which will seriously limit the transmission rate and transmission distance of the optical fiber communication system. It is desirable to obtain wavelength tunable optical transmitters with negative chirp characteristics that can be used in dense wavelength division multiplexing metropolitan area networks (DWDM). In this paper, the negative chirp of direct modulation tunable semiconductor lasers is first found and verified. In the process of modulation, the carrier density of the active region and the output optical power of the direct-modulated tunable V-cavity laser with multi-electrode structure have been ingeniously reversed. Therefore, the optical signal produced by the V-cavity laser has negative chirp characteristics, thus realizing the long-awaited desire. In this paper, the time-domain traveling wave model is used to simulate and analyze the dynamic relationship between carrier density and output optical power of V-cavity laser during direct modulation, and the correctness of negative chirp is explained theoretically. Secondly, the time-domain dynamic chirp of V-cavity laser is measured by optical band-pass filtering method. The negative chirp results are measured experimentally and the results are in agreement with the simulation analysis. Finally, the negative chirp characteristic of V-cavity laser is analyzed to compensate the dispersion of optical signal in G. 652 standard single-mode fiber. The negative chirp characteristic of V-cavity laser is further confirmed. The V-cavity laser with simple fabrication, compact structure, tunable wavelength harmonic and direct modulation negative chirp will have a broad application prospect in the future optical communication network.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN248.4

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郝素君;波導(dǎo)激光器增益測(cè)量及注入載流子密度對(duì)增益的影響[J];上海交通大學(xué)學(xué)報(bào);1994年03期

2 黃立平;潘煒;;光g跬馇話氳繼寮す餛鱄參量模型的理論研究[J];半導(dǎo)體光電;2008年03期

3 張洪喜，，強(qiáng)亮生，張景文，徐崇泉，商學(xué)彬;光折變LiNbO_3晶體中的有效載流子密度[J];中國激光;1994年07期

4 ;激光物理[J];中國光學(xué)與應(yīng)用光學(xué)文摘;2001年04期

5 李焱,陳建國,李大義,陸洋;外腔半導(dǎo)體激光器多穩(wěn)條件的解析表達(dá)[J];激光與光電子學(xué)進(jìn)展;1999年S1期

6 黃立平;潘煒;;ECLD激光器三種模型的調(diào)諧特性比較[J];半導(dǎo)體技術(shù);2008年08期

7 Naoki Chinone et al ,趙魯光;橫模和載流子密度分布對(duì)半導(dǎo)體激光器動(dòng)力學(xué)行為的影響[J];國外發(fā)光與電光;1979年Z2期

8 李焱,陳建國,李大義,陸洋,周小紅;外腔半導(dǎo)體激光器調(diào)諧輸出曲線雙穩(wěn)環(huán)的多樣性及多解與基本參量的關(guān)系[J];物理學(xué)報(bào);1999年12期

9 劉國棟;王貴兵;李劍峰;付博;羅福;;絕緣襯底上硅表面載流子的超快動(dòng)力學(xué)研究[J];光學(xué)學(xué)報(bào);2009年03期

10 劉勁松;詹玉書;;閾值載流子密度對(duì)注入鎖定半導(dǎo)體激光器雙穩(wěn)輸出特性的影響[J];應(yīng)用激光;1988年02期

相關(guān)碩士學(xué)位論文 前1條

1 李敘倫;V型腔可調(diào)諧半導(dǎo)體激光器啁啾特性研究[D];浙江大學(xué);2015年

本文編號(hào)：2198515