单模光纤的熔接损耗与测量

论述了光纤熔接损耗产生的原因及如何降低光纤的熔接损耗 ;如何使用 OTDR测量光纤熔接损耗和怎样对测试曲线进行分析     

电力光纤熔接损耗研究

通过对电力光纤的熔接损耗研究,开展光纤熔接点的损耗测试以及测试数据的 统计分析?建立其熔接损耗的评估模型,为工程人员在光纤熔接损耗的故障判断中提供理论依据,指导电力光纤实际工作中的预判问题,避免盲目更换光纤所造成的浪费,相比于单纯的理论分析结果更加实用?     

减少光纤接头熔接损耗技术研究

光纤通信网络中光信号传输到光缆线路的光纤熔接接头位置处会产生极大的信号传输损耗,研究降低光纤接头熔接损耗技术具有现实意义.本文介绍了光纤接头熔接损耗的定义以及测量损耗值的方法.并且本文依据接头熔接损耗产生因素,对减少接头熔接损耗的具体措施进行了详细阐述,对光纤通信实际应用起到一定的参考价值.     

影响光纤熔接损耗的因素及解决方法

针对造成光纤熔接损耗的各种本征和非本征因素,进行了详细的分析和总结.说明了各个损耗因素的取值范围;并以模场直径为例,分析了光纤模场直径不同时引起的连接损耗的变化.即举例介绍了光纤熔接损耗的计算方法;最后提出了降低光纤熔接损耗的解决方法,为进一步研究先纤的熔接损耗提供了理论依据.     

光纤熔接技术

光在光纤中传输时会产生损耗,这种损耗主要由光纤自身的传输损耗和光纤接头处的熔接损耗组成。光纤自身的传输损耗是一个确定值,而光纤接头处的熔接损耗则与光纤的本身及现场施工有关。努力降低光纤接头处的熔接损耗,则可增大光纤中继放大传输距离和提高光纤链路的衰减裕量。     

光纤熔接技术

本文通过对影响光纤熔接误差参数的分析,介绍了光纤熔接技术中的端面制备、对中、电弧熔接技术、接头增强措施等主要工艺过程.其接头具有损耗小、占空小、价格低、简单、快速等优点.     

光纤熔接施工中降低光纤接头熔接损耗的措施

介绍光纤接头熔接损耗的概念及其测量方法、影响熔接损耗的主要因素以及降低熔接损耗的方法。     

光纤熔接实用技术

光在光纤中传输会产生损耗,这种损耗主要由传输损耗和接续损耗组成,尽量降低光纤接头处的熔接损耗,可增大光信号传输距离和提高光纤链路的衰减裕量,因此光纤熔接是一项重要的工作。     

浅析减少光纤接续熔接损耗的措施

光纤接头熔接损耗是光纤熔接后光线传到接头处产生的损耗。在光纤熔接中要减少光纤线路损耗首先要降低光纤接头熔接损耗；本文从理论上分析了影响光纤熔接损耗的一些主要因素，根据理论分析和实践提出了减小熔接损耗的方法。     

浅谈如何降低光纤的熔接损耗

详细介绍了光纤熔接的过程和步骤、光纤熔接损耗的影响因素及降低光纤熔接损耗的措施。     

光子晶体光纤与普通光纤的耦合熔接

为了实现光子晶体光纤与普通光纤低损耗熔接,采用优化熔接机参量和逐渐塌缩光子晶体光纤空气孔的方法,对光子晶体光纤和普通光纤熔接损耗的主要来源及普通熔接机参量的选择进行了详细的理论分析,并对光子晶体光纤和普通光纤模场直径相匹配和不匹配两种情况分别进行了熔接实验研究,取得了小于0.2dB和0.3dB的熔接损耗.结果表明,通过...     

Fusion splicing between optical circuits and optical fibres

Splicing between an optical fibre and a planar deposited silica waveguide was performed by using a CO2 laser as a heat source. The average splicing loss of 30 samples between a multimode graded-index fibre and a deposited silica waveguide was 0.18 dB. Reflection from the joining point disappeared by the fusion splicing.     

数字全息中基于优化Harris角点的相位拼接算法

针对数字全息技术中测量面积受限的问题,提出基于优化Harris角点算法的拼接算法实现相位的双方向拼接。在获取数字全息图像时,保证相邻区域具有部分重叠,再对获得的物体的各子孔径相位图像进行拼接;用Harris角点算法检测角点密集区域为匹配模板,可高效且精准地确定重叠区域,结合高斯尺度空间和金字塔匹配思想对算法进行优化,通过加权融合实现三维形貌的再现相位拼接。以玻璃样板为实验对象,完成了物体再现相位的双方向拼接。实验结果表明:该拼接方法能够有效扩大数字全息测量物体的测量面积,并保证了较高的拼接准确度。     

Low loss fusion splicing polarization-maintaining photonic crystal fiber and conventional polarization-maintaining fiber

An efficient and simple method of fusion splicing of a Polarization-Maintaining Photonic Crystal Fiber (PM-PCF) and a conventional Polarization-Maintaining Fiber (PMF) with a low loss of 0.65 dB in experiment is reported. The minimum bending diameter of the joint can reach 2 cm. Theoretical calculation of the splicing loss based on mode field diameters (MFDs) mismatch of the two kinds of fibers is given. All parameters affected the splicing loss were studied.     

融合拼接大屏幕显示系统可靠性研究及优化策略

分析了当前热门的融合拼接大屏幕显示系统运行机理和主要技术特点。在此基础上,研究了融合拼接与非融合拼接两类大屏幕显示系统可靠性。通过对比和分析,论证了前者可靠度存在薄弱环节。针对不同的应用环境和要求,分别提出了融合拼接大屏幕显示系统可靠性设计优化策略,使其可靠度获得显著提升。     

Fusion splicing of a 31.6 km monomode optical fibre system

The fusion splicing of a 14-fibre, 31.6 km-cabled, monomode optical fibre system, with a mean splice loss of 0.18 dB at ? = 1.3 ?m and 0.12 dB at ? = 1.55 ?m, is reported.     

Fusion splicing of heavy metal fluoride glass optical fibres

Heavy metal fluoride (HMF) glass optical fibres were spliced by fusing the two ends of fibres using a DC arc. An average optical loss of 0.08 dB per splice and strengths of up to 600 MPa were achieved for fusion splices using an inert gas purge during splicing. Estimates are made to determine the feasibility of achieving a splice loss of 0.005 dB for single-mode (HMF) fibres.<>     

Improving the quantum efficiency of erbium-doped fiber laser by using a low-loss tipped fiber splicing process

A tipped single-mode fiber (SMF) structure is employed to reduce the fusion-splicing loss induced at the interface between SMFs and erbium-doped fibers (EDFs). By fusing the EDF and the tipped SMF with lens-like end face at once, the optimized fusion-splicing loss of as low as 0.2/spl sim/0.29 dB is obtained. An improvement on splicing loss of up to 0.46 dB is obtained as compared to the conventional EDF/SMF fusion geometry. The effects of tapered angle and radius of curvature at the end face of tipped fiber on the optimization of fusion-splicing loss are compared. The erbium-doped fiber laser with maximum quantum efficiency of 2.75% is reported by using the proposed splicing technology.     

Miniature fiber Fabry-Perot sensors based on fusion splicing

Fiber-optic Fabry-Perot (F-P) sensors are widely investigated because they have several advantages over conventional sensors, such as immunity to electromagnetic interference, ability to operate under bad environments, high sensitivity and the potential for multiplexing. A new method to fabricate micro-cavity Fabry-Perot interferometer is introduced, which is fusion splicing a section of conventional single-mode fiber (SMF) and a section of hollow core or solid core photonic crystal fiber (PCF) together to form a micro-cavity at the splice joint. The technology of fusion splicing is discussed, and two miniature optical fiber sensors based on Fabry-Perot interference using fusion splicing are presented. The two sensors are completely made of fused silica, and have good high-temperature capability.     

Exact splice loss prediction for single-mode fiber

This paper describes the direct measurement method of spot size for single-mode fibers and its application to the splice loss prediction. Using a core-centering-type automatic fusion splicing machine, predicted splice loss is examined for several MCVD and VAD fibers. The accuracy of splice loss predicted by this method is better than that calculated from core radius and refractive index. The experimental splice loss is equal to the sum of the loss predicted by this method and the loss caused by the splicing technique.