挡光片式可变光衰减器研究

发布时间：2018-03-31 16:28

本文选题：光通信　切入点：可变光衰减器　出处：《南京邮电大学》2017年硕士论文

【摘要】：光衰减器是对光功率进行衰减的无源光学器件,主要应用于测量光纤系统指标,匹配通信系统中光信号功率等。在全光通信网络系统中,可变光衰减器(Variable Optical Attenuator,VOA)可以解决功率匹配、信道衰减增益、接收机匹配等问题,研究VOA具有重要并巨大的商业价值。挡光片式可变光衰减器作为一种常见的VOA,本研究发现国内外尚未有太多文献对不同形状孔挡光片对光场和衰减性能的影响有着全面的探讨。本文通过从实验角度分析了不同形状挡光片对VOA内部光场特性的影响,分别对矩形、圆形、三角形三种挡光片的光衰减特性做了对比分析。得出了三角形挡光片的衰减调控性能更为理想。然后,基于实验研究挡光片式可调光衰减器设计了一种空气挡光片式微流控VOA,它结合了挡光片衰减原理和微流控光学技术。本文阐述了这种空气挡光片式微流控VOA的结构设计和工作原理,通过FLUENT软件对器件特性进行了仿真分析。本研究的意义在于:补充了国内外缺少的不同形状孔挡光片对衰减器性能影响的研究,所设计的空气挡光片式微流控VOA促进了微流控光学技术在光通信中的应用。
[Abstract]:Optical attenuator is a passive optical device that attenuates optical power. It is mainly used to measure optical fiber system index and match optical signal power in communication system. Variable Optical Attenuator VOAA can solve the problems of power matching, channel attenuation gain, receiver matching, etc. The study of VOA is of great commercial value. As a common variable optical attenuator, it is found that there are not too many literatures at home and abroad on the influence of different shape aperture dampers on the optical field and attenuation performance. In this paper, we analyze the influence of different shapes on the light field characteristics of VOA from the point of view of experiment. The attenuation characteristics of rectangle, circle and triangle are compared and analyzed respectively. It is concluded that the attenuation control performance of triangle block is more ideal. Based on the experimental study of the optical attenuator, an air stopper microfluidic control (VOAA) is designed, which combines the attenuation principle and the microfluidic optical technology. The junction of this kind of air-blocking microfluidic VOA is described in this paper. Structural design and working principles, The characteristics of the device are simulated and analyzed by FLUENT software. The significance of this study is to supplement the research on the influence of different shapes of aperture damper on the performance of the attenuator, which is not available at home and abroad. The designed microfluidic VOA promotes the application of microfluidic optical technology in optical communication.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN715

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