通信波段的多通道全光纤量子关联光源
发布时间：2018-08-23 12:03
【摘要】：光纤通信波段的全光纤量子关联光源因其与光纤通信系统良好的兼容性、小型、便携等优良特性受到广泛关注。本文以量子关联光源的实用化和小型化为目的,结合光纤通信系统对量子关联光源的要求,研制了通信波段的多通道全光纤量子关联光源。论文的主要内容如下:1、介绍了量子关联光源的研究现状及趋势,指出泵浦源和非线性介质光纤对全光纤化量子关联光源的影响。2、介绍了光纤制备关联光子对的理论基础,包括光子对产生的基础——自发四波混频效应和光纤中影响关联光源质量的其他因素。从量子角度出发,给出了关联光源重要参数表达,为实验研究关联光子对特性做铺垫。3、实验搭建了通信波段的多通道全光纤量子关联光源,并对其输出特性进行研究。该部分介绍了实验装置和实验结果,分析了量子关联光源的纯度。针对实验室已有的一台便携式量子关联光源的不足之处,本文进行了以下几点改进。首先,量子关联光源输出通道扩展至多通道,信号/闲频通道中心波长分别为:1567.13nm/1554.13nm和1569.59nm/1551.72nm。其次,利用非线性系数更高的高非线性光纤代替色散位移光纤,缩短了光纤使用长度,减少占用空间,减小了光源体积。最后,自搭建锁模光纤激光器,提高了关联光源泵浦脉冲的重复频率,达到41MHz。实验结果验证了四个通道输出光子的关联特性,实现了关联光源的多通道输出。
[Abstract]:All optical fiber quantum correlation light source in optical fiber communication band has attracted much attention because of its good compatibility with optical fiber communication system, small size and portable. Aiming at the practicality and miniaturization of quantum correlation light source and the requirement of optical fiber communication system for quantum correlation light source, a multi-channel all-fiber quantum correlation light source in communication band is developed in this paper. The main contents of this paper are as follows: 1. The research status and trend of quantum correlation light source are introduced. The effects of pump source and nonlinear dielectric fiber on all-fiber quantum correlation light source are pointed out. It includes the basis of photonic pairing-spontaneous four-wave mixing and other factors affecting the quality of correlated light source in optical fiber. From the angle of quantum, the important parameter expression of correlation light source is given, which lays the groundwork for the experimental study of correlation photon pair characteristics. The multi-channel all-fiber quantum correlation light source in communication band is constructed experimentally, and its output characteristics are studied. In this part, the experimental device and experimental results are introduced, and the purity of quantum correlation light source is analyzed. In view of the shortcomings of a portable quantum correlation light source in the laboratory, the following improvements have been made in this paper. Firstly, the output channel of quantum correlation light source is extended to multi-channel. The central wavelength of signal / idle frequency channel is 1 567.13 nm / 1554.13 nm and 1569.59 nm / 1 551.72 nm respectively. Secondly, a high nonlinear fiber with a higher nonlinear coefficient is used instead of a dispersion-shifted fiber, which shortens the length of the fiber, reduces the space and reduces the volume of the light source. Finally, the self-built mode-locked fiber laser improves the repetition rate of the pump pulse of the correlation light source, reaching 41 MHz. The experimental results verify the correlation characteristics of the four channels output photons and realize the multi-channel output of the correlation light source.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.11
本文编号：2199031
[Abstract]:All optical fiber quantum correlation light source in optical fiber communication band has attracted much attention because of its good compatibility with optical fiber communication system, small size and portable. Aiming at the practicality and miniaturization of quantum correlation light source and the requirement of optical fiber communication system for quantum correlation light source, a multi-channel all-fiber quantum correlation light source in communication band is developed in this paper. The main contents of this paper are as follows: 1. The research status and trend of quantum correlation light source are introduced. The effects of pump source and nonlinear dielectric fiber on all-fiber quantum correlation light source are pointed out. It includes the basis of photonic pairing-spontaneous four-wave mixing and other factors affecting the quality of correlated light source in optical fiber. From the angle of quantum, the important parameter expression of correlation light source is given, which lays the groundwork for the experimental study of correlation photon pair characteristics. The multi-channel all-fiber quantum correlation light source in communication band is constructed experimentally, and its output characteristics are studied. In this part, the experimental device and experimental results are introduced, and the purity of quantum correlation light source is analyzed. In view of the shortcomings of a portable quantum correlation light source in the laboratory, the following improvements have been made in this paper. Firstly, the output channel of quantum correlation light source is extended to multi-channel. The central wavelength of signal / idle frequency channel is 1 567.13 nm / 1554.13 nm and 1569.59 nm / 1 551.72 nm respectively. Secondly, a high nonlinear fiber with a higher nonlinear coefficient is used instead of a dispersion-shifted fiber, which shortens the length of the fiber, reduces the space and reduces the volume of the light source. Finally, the self-built mode-locked fiber laser improves the repetition rate of the pump pulse of the correlation light source, reaching 41 MHz. The experimental results verify the correlation characteristics of the four channels output photons and realize the multi-channel output of the correlation light source.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.11
【参考文献】
相关期刊论文 前1条
1 刘东峰,陈国夫,王贤华;自起振被动锁模掺Er~(3+)光纤环形腔孤子激光器的实验研究[J];中国科学(A辑);1999年07期
，本文编号：2199031
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