【作者】 向金山；

【导师】 郭永康；

【作者基本信息】 四川大学 ， 光学， 2002， 硕士

【摘要】 随着Internet技术的飞速发展，人们对信息的需求越来越高，使得信息产业成为二十世纪末的新兴主导产业。光通信器件作为光通信技术的重要组成部分，也得到飞速发展，世界各国都在技术上展开了激烈的竞争。本文结合光器件的设计方法和系统对光器件的要求，分析了光通信器件中器件与器件之间的光束耦合过程，以及光束在不同传输介质中的传输特点，从理论与实验两方面作了一些工作，主要概括为以下几方面： 一．针对可调型机械挡光衰减器的挡光特点，从衍射理论的角度分析和发现该器件的衰减特征，并根据该特征选择挡光片，制作了衰减器。在传输光路上试用，获得了较好的效果。 二．为了保证光器件的性能参数的稳定，在器件的研制过程中提出将折衍混合元件(球透镜加微光学元件)用于光束耦合，充分利用球透镜的对称性，减少了元件的调节自由度。同时对球透镜的像差设计位相补偿片进行补偿，得到了较高的光束耦合效率。 三．在一般的光束耦合中，通道的光束耦合多用光纤准直器实现，对DWDM系统的多通道的情况，必须寻找阵列化的准直器。结合密集波分复用系统的光束耦合特点，提出用菲涅尔透镜列阵做光纤阵列准直器，并设计不同结构的透镜列阵，得出了该阵列准直器的光束耦合损耗特征，与现有的光纤准直器的参数相比，体现出用菲涅尔透镜列阵作阵列光纤准直器的诸多优势。更多还原

【Abstract】 With the development of Internet technology, people have an increasing demand for information , which makes information industry a leading sector in the late 20th century. During which Optical fiber communication devices technology, an important part of IT , has developed at speed. Subsequently, worldwide fierce competition in this field have been conducted . This thesis, based on the design methods of optical devices and requirements of communication system, mainly analyses the inter-device coupling process , and has designed some optical devices in theory, some of which are substantiated in experiment.In general, the thesis covers the following aspects:First, In accordance with the property of variable tuning optical attenuator (VOA),which is analyzed and discovered through diffraction theory , selected block plate and made attenuator , and achieved satisfactory effect by experiment in light transportation circuit .Second, in the process of developing elements, applied diffraction-refraction mixed elements (ball-lens + micro-optics elements)to light beam coupling so as to ensure the stability of performance parameter of optical devices, and made full use of ball lens symmetry to reduce the tuning freedom of elements . Moreover , compensated for aberration of ball lens by designing phase compensating plate to get a higher energy utilization rate.Third, combining with the light beam property of DWDM system, put forward taking Fresnel lens array as fiber arrayed collimator ,designed differently structured lens array and discovered the arrayed collimator loss property, which compared with the existing parameter of fiber collimator, embodies many advantages as arrayed collimator.更多还原