与V型耦合腔波长可调谐激光器集成的电吸收调制器研究

发布时间：2018-01-06 13:12

本文关键词：与V型耦合腔波长可调谐激光器集成的电吸收调制器研究　出处：《浙江大学》2015年硕士论文　论文类型：学位论文

【摘要】：光通信技术的突破极大地推动了信息化时代的发展,信息化的发展始终伴随着对光通信系统传输容量与带宽需求的提高。以波分复用(WDM)技术为代表的光通信技术是未来构建智能光网络的关键。为了尽量发挥WDM技术的优势,在通信网络中,我们需要波长可调谐的半导体激光器。可调谐半导体激光器能够根据要求来动态调整输出波长,在宽带光通信系统和智能光网络(SDN)中有着重要的应用。为密集波分复用(DWDM)系统中的固定波长激光器提供备份,波长转换以及光路由等都是其重要功能。大规模的应用可调谐激光器将减少所需的备份器件数量,从而简化系统,降低成本,提高可靠性。如今可调谐半导体激光器已成为新一代密集波分复用系统以及全光网络中光子交换的关键光电器件。与此同时,对波长可调谐激光器发出的光进行外调制,可以有效的避免直接调制所带来的高啁啾并在一定程度上克服传统单模光纤中的色散效应。基于QCSE的高速电吸收调制器,由于其低成本,低能耗,结构紧凑且易与DFB激光器、SOA等光器件集成的特点,也已经成为40-Gb/s光通信系统中的关键组件。利用量子阱混合等有源、无源集成技术,设计单片集成的可调谐电吸收调制激光器(EML),对于未来光通信网络的扩大与普及有着重要的现实意义。本文提出了一种基于V型耦合腔波长可调谐激光器与集总型电吸收调制器的新型电吸收调制激光器(EML),采用了量子阱混合技术来进行单片集成；引入了一个简洁的电吸收光调制器模型来分析其高频特性；通过对EML的层状结构以及外部尺寸进行优化,仿真结果显示其电光响应-3 dB带宽可达16GHz,电吸收调制器部分的结电容仅为0.17 pF。最后,依据仿真结果进行了实物器件的制作并对其静态性能进行了测试,我们相信这种新型波长可调谐EML在未来DWDM系统的应用中将发挥重要的作用。
[Abstract]:The breakthrough of optical communication technology has greatly promoted the development of the information age. The development of information technology has always been accompanied by the increase of transmission capacity and bandwidth of optical communication system. The optical communication technology represented by WDM technology is the key to construct intelligent optical network in the future. In order to give full play to the advantages of WDM technology. In communication networks, we need wavelength tunable semiconductor lasers, which can dynamically adjust the output wavelength according to the requirements. It has important applications in broadband optical communication system and intelligent optical network (SDN). It provides backup for fixed wavelength lasers in dense wavelength division multiplexing (DWDM) system. Wavelength conversion and optical routing are important functions. The large scale application of tunable lasers will reduce the number of backup devices required, thus simplifying the system and reducing the cost. Improving reliability. Nowadays tunable semiconductor lasers have become the key optoelectronic devices in the new generation of dense wavelength division multiplexing (DWDM) systems and photonic exchange in all optical networks. The light emitted by the wavelength tunable laser is externally modulated. It can effectively avoid the high chirp brought by direct modulation and overcome the dispersion effect in traditional single-mode fiber to a certain extent. High speed electric absorption modulator based on QCSE has low cost and low energy consumption. Compact and easy to integrate with DFB lasers and other optical devices, it has become a key component of 40-GB / s optical communication system, using the quantum well hybrid active, passive integration technology. A monolithic integrated tunable electroabsorption modulated laser (EMLs) is designed. It is of great practical significance to expand and popularize the optical communication network in the future. In this paper, a new type of electro absorption modulated laser based on V type coupled cavity wavelength tunable laser and lumped electric absorption modulator is proposed. EMLs. The quantum well mixing technique is used for monolithic integration. A simple model of electrically absorbed light modulator is introduced to analyze its high frequency characteristics. By optimizing the layered structure and the external dimension of EML, the simulation results show that the electro-optic response can reach 16GHz in 3 dB bandwidth. The junction capacitance of the electric absorption modulator is only 0.17 PF. Finally, the physical device is fabricated and its static performance is tested according to the simulation results. We believe that this novel wavelength tunable EML will play an important role in the application of DWDM systems in the future.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN248

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