FTTX-how close to the end user should fiber come?
FTTX-how close to the end user should fiber come?
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FTTX——光纤应该距离最终用户多远？
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
G. N. van den Hoven
中科院分区：
文献类型：
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作者：
G. N. van den Hoven
仅给出摘要表格。这个问题的答案很简单：最终，光纤应该走进千家万户。大多数科学家、工业工程师和经济学家都会同意这一点。真正的大问题是：它应该多快到达家？光纤能够长距离传输巨大的带宽。品质因数就是所谓的带宽距离乘积。实验证明单模光纤的最高带宽距离产品超过1000 Tbit/s × km。相比之下，双绞线铜缆和同轴电缆的带宽距离乘积在 100 Mbit/s × km 的范围内。随着带宽需求的不断增长，每个最终用户使用的平均带宽量每两年就会翻一番，光纤是为家庭带来带宽的唯一现实的最终解决方案。然而，如果我们只考虑当今对带宽的直接需求，则可以通过铜缆解决方案或混合光纤铜缆网络轻松满足。在本文中，光纤到户 (FTTH) 的部署技术将与其他光纤到 X (FTTX) 方法进行比较。我们将讨论几种架构，例如无源光网络 (PON)、点对点网络、使用多波长的网络 (WDM-PON) 以及光纤到节点或街道机柜。除了纯粹的技术比较之外，我们还将审查通信服务和服务提供商在光纤铺设方面的角色。
Summary form only given. The answer to the question is easy: In the end, optical fiber should come all the way into the home. Most scientists, industry engineers and economists will agree. The really big question is: How fast should it come to the home? Optical fiber is capable of transporting huge bandwidth over long distances. The figure-of-merit is the so-called bandwidth-distance product. The highest bandwidth-distance products experimentally demonstrated for single mode optical fiber are more than 1000 Tbit/s times km. In comparison the bandwidthdistance product for twisted pair copper and coaxial cable is in the range of 100 Mbit/s times km. With the ever-increasing demand for bandwidth the average amount of bandwidth used per end-user doubles every 2 years optical fiber is the only realistic end-solution to bring bandwidth to the home. However, if we only look at today's immediate demand for bandwidth, it can be easily met with copper cable solutions or with hybrid fiber-copper networks. In this paper, the deployment technologies for fiber-to-the-home (FTTH) will be compared to other fiber-to-the-X (FTTX) approaches. Several architecture will be discussed, such as passive optical networks (PON), point-to-point networks, networks using multiple wavelengths (WDM-PON), and fiber-to-the-node or street cabinet. Besides a pure technology comparison, we will also review the roles of the communication services and service providers with respect to fiber roll-out.