共查询到19条相似文献,搜索用时 156 毫秒
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光纤连接器是组成光纤传输通信线路以及测量系统不可缺少的一种重要器件。本文通过实验测试说明,用于多模工作的活动接头,其特性依赖于模功率的分布,接头的插入损耗只能在收发两端均在稳态条件下测量。光纤活动连接器的互换是有条件的。 相似文献
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插入损耗和回波损耗是光纤连接器最重要的光学指标,而影响这两个光学指标的主要因素包括光纤连接器端面质量和对准光纤的横向位移、间隙及角位移等.讨论了光纤连接器插入损耗的主要因素,对横向位移产生的插入损耗进行了理论分析及实验验证,所得到的实验值与计算值基本吻合.同时对单模光纤连接器端面研磨工艺与其光学指标的关系进行了大量的实验和理论分析,研究了光纤端面质量与回波损耗的关系,优化了适合工业生产光纤连接器的端面研磨工艺. 相似文献
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针对光纤旋转连接器在轴向旋转光通信系统中的应用和技术特点,研制了一种基于Dove棱镜和光纤准直器的空分复用多通道宽带光纤旋转连接器。通过分析光信号在多通道宽带光纤旋转连接器中的光路和光程,得出了850、1 310和1 550nm 3波长光路传输时的出射偏移量,并据此设计Dove棱镜的几何尺寸和光纤准直器收发光路,使其达到宽带耦合最佳位置。实验结果表明,经由多通道宽带光纤旋转连接器传输的850~1550nm波长信号最大插入损耗为4.7dB,回波损耗为43.78dB。光纤旋转连接器在-40~70℃时的插入损耗最大变化值为2.0dB。将光纤旋转连接器接入传输速率为1.32Gbit/s的数字视频复用系统中,数字信号的丢帧率为0,以太网和视频指标均满足实际信号传输要求。 相似文献
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光纤连接器插入损耗的机理及降低插入损耗的关键技术 总被引:1,自引:0,他引:1
潘劲松 《光纤光缆传输技术》2008,(2):20-22
光纤连接器的插入损耗是光纤连接器的主要技术指标。分析了影响光纤接头和连接器损耗的机理,并讨论了降低接头损耗的关键技术。 相似文献
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本文介绍了光纤连接器的基本结构,阐述了导致光纤连接器产生插入损耗的主要原因,对实际测试和试验中发现的问题进行了分析,给出连接器测试及试验的建议. 相似文献
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Myoung Jin Kim Tae Joong Eom Un-Chul Paek Byeong Ha Lee 《Lightwave Technology, Journal of》2005,23(2):588-596
Optical fiber connectors that had a long working distance and wide alignment tolerance were implemented by utilizing long-period fiber gratings (LPGs) written in double-cladding fiber. The power coupling between two separated pieces of fiber was accomplished through the inner cladding modes of both fibers. Assisted by the LPGs, approximately 450 /spl mu/m was achieved for a 1-dB working distance, as well as about 3 mm of 3-dB working distance. When the separation between two fiber tips was 1.5 mm, the 3-dB lateral tolerance was measured to be about 30 /spl mu/m, which was five times better than was the case when not utilizing the LPGs. By using the inner cladding mode of a dispersion-compensating fiber, it was possible to implement a fiber connector that was insensitive to the perturbations at the cladding surface of the fiber. The total insertion loss of the device at the maximum coupling was 2.06 dB, from which the loss purely induced by inserting the fiber gratings was analyzed to be smaller than 0.9 dB. The experimental results show strong feasibility for implementing a simple and cost-effective fiber connector that does not require any bulk optic elements. 相似文献
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菲涅尔反射对光纤连接器插入损耗的影响 总被引:1,自引:0,他引:1
光纤连接器在研磨完成后,纤芯端面的3D图通常显示为凹陷,即在跳线两两对接时,两光纤端面间会存在空气间隙。当光经过此光纤连接器时,在两个端面之间必定产生菲涅尔反射。基于菲涅尔反射理论,分别讨论了在计入干涉和不计干涉两种情况下光纤连接器的插入损耗,并绘制了不同空气间隙厚度时的插入损耗曲线,解释了Telcordia GR-326-CORE Issue3把光纤凹陷限定在50nm之内的实际意义。 相似文献
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《Photonics Technology Letters, IEEE》2010,22(1):60-62
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Trunk transmission network systems connecting exchange offices were the first transmission systems using optical fiber cables. Subscriber network systems connecting the exchange office with each subscriber including local area networks or CATV network systems are under development at present. Two main techniques are newly required to be developed for making optical fiber mechanical connectors for optical fiber subscriber network system realization. The first is to realize a new connector with a high return loss and a low connecting loss. The second is to cut the joining cost of optical fibers. The newly developed "optical contact connector" realized a high return loss of more than 25 dB and a low connecting loss of 0.15 dB average value. A newly developed "multifiber connector" which can connect many optical fibers at the same time can save time and space for joining fiber cables, and also a "plastic molding technique" can save the cost of the connector. The performance of all these connectors is the same as that of the "optical contact connector." This paper describes the present status of the technique to obtain a high return loss connector, a multifiber connector, and a plastic molded connector for the subscriber network system. 相似文献
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Van Erps J. Debaes C. Singh R. Nasilowski T. Mergo P. Wojcik J. Aerts T. Terryn H. Vynck P. Watte J. Thienpont H. 《Photonics Technology Letters, IEEE》2008,20(3):187-189
High-efficiency low-cost field-installable 180deg-bend single-mode fiber (SMF) sockets are promising new fiber connector components that can facilitate network element footprint reduction and allow for more comfortable connector handling in the field. We present a novel type of small-form-factor 180deg coupling SMF socket component, yielding coupling losses between two side-by-side positioned fibers as low as 0.5 dB, making use of specially designed low bending loss hole-assisted fiber. The components are prototyped in a polymer using deep proton writing and show all the potentialities for low-cost fabrication in different types of plastics. 相似文献
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An angled, physical contact type multifiber connector is developed on the basis of a structural design which enables direct fiber endface contact between multifiber arrays. The direct contact is achieved by utilizing the elastic nature of a ferrule material under compressive force. The fabricated connector provides a low insertion loss of 0.2 dB and a high return loss of 58.8 dB without index-matching. This connector is used in the successful development of push-on type and backpanel type 16-fiber connectors with a low insertion loss of 0.25 dB and a high return loss of 58.0 dB for future subscriber networks 相似文献
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介绍最新研制的直插式双芯SC型光纤连接器,概述连接器的结构、设计特点、材料特性及制造工艺,给出了各种实验结果,该连接器用于单模光纤时平均插入损耗为0.16dB,回波损耗〉38dB。 相似文献