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首页> 外文会议>Transparent Optical Networks, 2003. Proceedings of 2003 5th International Conference on >'The 2nd order of magnitude' - the video revolution and all-optical services
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'The 2nd order of magnitude' - the video revolution and all-optical services

机译：“第二数量级”-视频革命和全光服务

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Summary form only given. "The 1st order of magnitude" - from POTS to DSL (64 kb/s to 512 kb/s) - is today being installed with a speed that exceeds expectations. It is now time to look ahead to "the 2nd order of magnitude" in research and development. This means the step from sub-Mb/s to multi-Mb/s to the end-user, and the corresponding networks. Practically the only driver for this would be video services in some form. The paper reviews the drivers for video services from a basic human and historic perspective. It also examines the bandwidth and service requirements for this "video revolution", and the role optical networks can play. The new image devices are not "stationary targets", so that the existing common perception of "2 Mb/s per image channel" will not be satisfactory for all time. Moreover, delivery will be over a multiplicity of competing media: broadcast, cable, discs, copper, and fibre. Quality and personalisation, both very bandwidth-driving, will be a critical competitive advantage. The role of optics is fundamental, but its role as an independent service-layer is more unclear, and depends on a matching between end-user and business oriented requirements, that must have a direct, technical realisation in the optical layer if the function shall be effectively solved by "all-optical" approaches.
机译：仅提供摘要表格。从POTS到DSL（64 kb / s到512 kb / s）的“第一数量级”今天正在以超出预期的速度进行安装。现在是时候展望研发的“第二个数量级”了。这意味着从子Mb / s到多Mb / s到最终用户以及相应网络的步骤。实际上，唯一的驱动因素是某种形式的视频服务。本文从基本的人类和历史的角度回顾了视频服务的驱动程序。它还检查了这种“视频革命”的带宽和服务要求，以及光网络可以发挥的作用。新的图像设备不是“固定目标”，因此“每个图像通道2 Mb / s”的现有常见感觉将不会一直令人满意。此外，交付将通过多种竞争性媒体进行：广播，电缆，光盘，铜缆和光纤。质量和个性化（都非常依赖带宽）将是至关重要的竞争优势。光学的作用是基本的，但其作为独立服务层的作用尚不清楚，并且取决于最终用户和面向业务的要求之间的匹配，如果功能必须实现，则必须在光学层中具有直接的技术实现。通过“全光学”方法有效解决。

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