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掺镱双包层光纤吸收特性的研究 总被引:3,自引:1,他引:3
对掺镱双包层光纤的吸收特性进行了研究。采用光纤截断法和包层模剥除技术,实现了掺镱双包层光纤纤芯吸收系数的精确测量,测量结果与实际吸收系数的测量误差小于5%。利用白光光源测量掺镱双包层光纤的损耗谱,对其有效吸收系数进行了详细的实验研究,发现有效吸收系数随着光纤长度的增加而减小,随着光纤纤芯直径的增加而增大,在不同弯曲状态下有效吸收系数的测量表明,在弯曲时不同内包层形状的掺镱双包层光纤的吸收特性并不相同,其中D型掺镱双包层光纤对976nm波长的有效吸收系数没有增大。 相似文献
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双包层掺镱光纤技术使高功率光纤激光器和放大器成为可能。最近几年随着制造技术和器件应用技术的发展双包层掺镱光纤也有了飞速发展,但是激光器的输出功率却受到受激拉曼散射和布里渊散射等非线性效应的限制,可以通过降低纤芯数值孔径、大模面积等方式来克服这种限制。分析和讨论了双包层掺镱光纤的激光放大原理、大模面积双包层掺镱光纤、多芯双包层掺镱光纤和微结构双包层掺镱光纤,介绍了掺镱光纤的研究现状和发展趋势。 相似文献
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980nm波段的掺镱光纤激光器因有望获得高亮度激光输出,代替980nm波段的半导体激光器成为掺铒/镱光纤激光器高亮度的抽运源而备受关注。从980nm波段光纤激光器广泛使用的4类增益光纤——单模单包层掺镱光纤、常规双包层掺镱光纤、JAC(Jacketed air-clad)掺镱光纤以及超大纤芯掺镱光子晶体光纤出发,对国际上各研究机构所做的工作进行了综述,介绍了其实验进展和存在的问题。最后就980nm波段光纤激光器的未来发展方向进行了探讨。 相似文献
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针对小芯径双包层掺镱光纤实现高功率光纤激光器的输出方案展开了理论研究,分析了双包层掺镱光纤的必要性和可行性,着重研究了高功率光纤激光器的基本原理,并给出了光源及放大器部分系统设计方案。系统仿真实验证明,能够获得高功率的1018nm激光信号。 相似文献
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报道了一种基于光纤饱和吸收体的掺镱全光纤调Q激光器,为了获得较高峰值功率较窄脉宽的激光脉冲输出,利用掺镱光纤的可饱和吸收效应,以20/130 μm规格的大模场双包层掺镱光纤作为增益光纤,以10/130 μm规格的单模双包层掺镱光纤作为可饱和吸收体来实现被动调Q。该激光器采用全光纤化的结构,结构紧凑,以较低的成本获得了较为高效的脉冲输出。最终获得了平均功率最高为3 W,直线效率约为30%,重复频率为10~100 kHz可调,脉宽最窄为344 ns,光谱宽度为0.05 nm、中心波长为1 064 nm的激光输出。 相似文献
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Kazunori Mukasa Katsunori Imamura Masanori Takahashi Takeshi Yagi 《Optical Fiber Technology》2010,16(6):367-377
This paper reviews the current situations of optical fibers used for terrestrial and submarine transmission systems as well as up-to-date R&;D on these fibers. The current fibers include standard single mode fibers (SMFs), non-zero dispersion shifted fibers (NZ-DSFs), and dispersion managed lines (DMLs). Even though these fibers show quite high and matured properties, the internet traffic is continuously growing, and around 2015–2020, it is expected that the current transmission fibers would become inadequate. To prepare for the future ultra high-capacity transmission, there are three important R&;D directions for transmission fibers. (1) Reducing non-linearity by means of enlarging Aeff and/or reducing attenuation loss. It is very important in the case of transmission systems using new multi-level signal formats. (2) Expanding the transmission band more than the current C- and/or L-Band by utilizing new transmission fibers. For example, holey fibers (HFs), which have an endlessly single mode (ESM) property, are one of the interesting candidates of the new transmission fibers. (3) Using Space Division Multiplexing (SDM) by using multi-core fibers. The multi-core fiber literally multiples the core number within a fiber dimension, which enables multiple transmission capacity per one fiber. In addition to the developments of transmission fibers, component fibers have also been studied and developed. Examples of R&;D on these component fibers will be also discussed in the latter part of this paper. 相似文献
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Clément Strutynski Ricardo Alvarado Meza Lionel Teulé-Gay Georges El-Dib Angeline Poulon-Quintin Jean-Paul Salvetat Luc Vellutini Marc Dussauze Thierry Cardinal Sylvain Danto 《Advanced functional materials》2021,31(22):2011063
Here, it is demonstrated that the stack-and-draw approach can be expanded to unusual materials association and profile geometries to generate fiber assemblies with unprecedented functionalities. This approach relies on the stacking of flat oxide glass slides into a preform, which is then thermally elongated into tens-of-meters-long ribbon fibers with preserved cross-section ratio. Fabrication methodology is introduced. In order to illustrate the versatility of the method, a panel of fibers with diverse geometries and functions is exposed, including glass-only exposed-core fibers for chemical sensing and, upon the insertion of metal electrodes, H-shaped multi-cavity structures and compact, glass-metal fiber optical detectors applied to a gas analysis by means of fiber-tip plasma spectroscopy. It is believed this new approach will offer an attractive, straightforward solution for designing innovative, complex multimaterial fiber platforms with enhanced functionalities. 相似文献
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微结构光纤及其双折射特性的研究 总被引:2,自引:0,他引:2
主要对微结构光纤以及其双折射特性研究情况进行总结,首先介绍了微结构光纤的研究历程和基本概念,然后重点总结了微结构光纤的解析和数值分析方法,接着介绍了高双折射微结构光纤设计和最新研究进展,最后对微结构光纤的应用和研究前景进行了展望。 相似文献
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多孔光纤及其双折射特性的研究 总被引:1,自引:0,他引:1
本文主要对多孔光纤以及其双折射特性研究情况进行总结。第一部分介绍了多孔光纤的研究历程和基本概念 ,以及光纤的双折射参数 ;第二部分重点地总结多孔光纤的分类、理论分析、数值模拟 ;第三部分介绍高双折射多孔光纤设计和制造、最新研究进展 ;第四部分对多孔光纤的应用和研究前景进行了展望 相似文献
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本文提出了计算扁保偏光纤双折射的一个近似方法。首先建立了扁保偏光纤的多层矩形介质波导模型,再用类似于Marcatili解矩形介质波导方法,将多层矩形波导分解为两个垂直交叉的多层平板波导,最后求解多层平板波导得到矩形波导的传播常数和双折射。用这一方法计算了双折射与扁保偏光纤结构参数,如应力包层掺硼浓度、椭圆度和归一化频率等的关系曲线,可供设计和工艺人员参考。 相似文献
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