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掺Ge石英纤芯光纤的耐辐照实验 总被引:2,自引:1,他引:1
研究了不同掺杂的光纤在辐照后引起的损耗增加,进而分析了掺Ge石英纤芯光纤的不同掺杂成分对其耐辐照性能的影响,提出最佳耐辐照掺Ge石英纤芯光纤的设想:包层掺F纤芯掺Ge的石英光纤,其中P的质量分数不超过0.5%,OH-含量在3×10-6以下,Cl的质量分数控制在0.9%左右。 相似文献
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本文设计了一款球-细芯-球结构的双参量光纤 传感器,再通过光纤拉锥,对光纤传感 器的折射率和轴向应变特性进行了前后对比,通过实验和理论分析可知,双球结构之间的细芯拉 锥后,对传感器的应变和锥部区域的折射率灵敏度影响较大。该实验结构简单,制作方便, 易于重复。该结构制作的双参量光纤传感器在拉锥后,锥部区域的折射率灵敏度比拉锥前提 高了两倍以上,达到50.53 nm/RIU,而轴向应变灵敏度也比拉锥前提 高了两倍左右,可达到 2.908 pm/με,实验结果基本符合理论推导。 相似文献
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J. Ballato T. Hawkins P. Foy B. Yazgan-Kokuoz C. McMillen L. Burka S. Morris R. Stolen R. Rice 《Optical Fiber Technology》2010,16(6):399-408
Presented here is a review of recent progress in the nascent field of glass-clad semiconductor core optical fibers. Such fibers, generally focused to-date on silicon and germanium cores, define a new class of optical fibers that have the potential to significantly advance the fields of nonlinear fiber optics and infrared power delivery. They also can provide considerable insight into the fundamentals of crystal growth and the interplay between thermodynamics and kinetics under non-equilibrium conditions. More specifically, this review begins with a brief history of the international efforts to-date and is followed by a more in-depth discussion of the processing and properties of crystalline unary (silicon and germanium) and binary (indium antimonide) semiconductor optical fibers prepared by a molten core approach that enables long lengths at relatively high speeds by comparison to other fabrication methods. Further, the fundamental performance limits are postulated as are a range of present and future applications. 相似文献
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圆形电介质包层金属空心光纤 总被引:2,自引:0,他引:2
苏宇欢 《光纤与电缆及其应用技术》2001,(4):39-45
综述了圆形电介质包层金属空心光纤的材料特性、制作工艺与应用 ,并指出了该材料的发展趋势 相似文献
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纯石英芯掺氟玻璃包层光纤的数值孔径 总被引:1,自引:0,他引:1
纯石英芯掺氟玻璃包层光纤是一种新结构的大芯径光纤,纤芯材料是纯石英玻璃,包层材料是掺氟石英玻璃,由于氟杂质可以降低石英玻璃的折射率,故纤芯材料与低折射率的包层材料可以组成传光波导。国外是采用POD(等离子体外相沉积)技术生产这种光纤,我们采用的是国内首创的管棒熔融套装法,制成了相同结构的光纤,为了提高光纤的性能,我们对该光纤进行了低、高折射率双层涂料涂覆,在测试中发现光纤的数值孔径参数随着光纤测试样品涂覆长度的变化而变化,变化范围为0.1889~0.3152。 相似文献
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本文从激光脉冲在单模光纤中传输所满足的非线性薛定谔方程出发,通过分步傅里叶变换方法,数值研究了超高斯啁啾光脉冲在单模光纤中脉冲形状的演化.研究表明,超高斯脉冲在单模光纤中传输将经历一个从近平顶、多峰、最后到单峰的演变过程,且高阶色散将引起脉冲形状发生畸变;在GVD和SPM效应的共同作用下,无啁啾的超高斯脉冲在特定条件下将出现孤子演变,具有正啁啾的超高斯脉冲在传输的初始阶段,脉冲形状的变化非常剧烈,而由于负初始啁啾减弱了非线性与色散效应引起的频率啁啾,所以其脉冲波形的变化平缓一些.研究表明,SPM产生的啁啾对入射脉冲的初始啁啾有一定的补偿作用. 相似文献
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In this paper, we report a preliminary theoret-ical study on optical fibers with fine material inclusions whose geometrical inhomogeneity is almost indistinguish-able by the operating wavelength. We refer to such fibers as metamaterial optical fibers, which can conceptually be considered as an extension from the previously much publicized microstructured optical fibers. Metamaterials can have optical properties not obtainable in naturally existing materials, including artificial anisotropy as well as graded material properties. Therefore, incorporation of metamaterial in optical fiber designs can produce a new range of fiber properties. With a particular example, we will show how mode discrimination can be achieved in a multimode Bragg fiber with the help of metamaterial. We also look into the mean field theory as well as Maxwell-Garner theory for homogenizing a fine metamaterial structure to a homogeneous one. The accuracies of the two homogenization approaches are compared with full-structure calculation. 相似文献
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介绍光纤分析的数值基础和程序设计过程,并给出最后软件。文中利用该软件设计分析了新型的三抛物线型光纤的传输特性。 相似文献
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与传统微结构光纤相比,开放式微结构光纤不仅保持了可通过灵活的几何结构设计,从而获得优化光学传感性能的优点,利用其开放式无需预填充的特点,还可较大幅度地提高传感实时工作效率。本文对近年来出现的几种具有代表性的开放式微结构光纤进行了讨论。比较了利用开放全内反射型、WagonV%甜型及嵌入导流孔型开放式微结构光纤作为实时气液传感器时各自的优缺点。研究表明,这几种开放式微结构光纤都在气液实时传感领域显示了较为独特的优点。借助于开放式微结构光纤,可为未来高精度实时光纤传感器领域的设计提供一种较有竞争力的技术支撑。 相似文献
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代康 《光纤与电缆及其应用技术》2002,(1):21-24,38
简要归纳了紧套光纤的主要技术要求,对比介绍了改善紧套光纤缓冲层剥离性以及室内光缆低温性能的几种方法。最后介绍了近年来紧套光纤设计和制造技术的新进展。 相似文献
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杨祥林 《电子科学学刊(英文版)》1989,6(3):263-271
This paper describes a method for fast engineering evaluation of the transmission characteristicsof single-mode optical fibers.A versatile microcomputer program is presented which can be utilized to ana-lyze mode field characteristics of single-mode fibers with arbitrary refractive index profiles.Our computationshows that the mathematical algorithm and the corresponding programs developeod in this paper are rela-tively simple and accurate enough for the engineenring design of single-mode fibers for optical communica-tion systems. 相似文献
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《Optical Fiber Technology》2014,20(4):395-402
We demonstrate the fabrication of a novel type of optical fibers with multiple parallel air-suspended cores by the sheet-stacking method. Using this technique we have constructed optical fibers with up to 10 parallel micron-size suspended cores. No extra scattering loss from the fabrication process was observed in a fabricated dual air-suspended core fiber. The sheet-stacking method opens the way towards using a wide range of optical glasses for manufacturing multiple parallel suspended-core specialty optical fibers with novel optical functionalities such as dispersion tunability. Fusion splicing has also been successfully used to connect such a multiple core fiber with a conventional silica fiber. 相似文献
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Luc THVENAZ 《中国光电子学前沿》2010,3(1)
Optical fiber sensors based on stimulated Brillouin scattering have now clearly demonstrated their excellent capability for long-range distributed strain and temperature measurements. The fiber is used as sensing element, and a value for temperature and/or strain can be obtained from any point along the fiber. After explaining the principle and presenting the standard implementation, the latest developments in this class of sensors will be introduced, such as the possibility to measure with a spatial resolution of 10 cm and below while preserving the full accuracy on the determination of temperature and strain. 相似文献