Flexible optical networks based on coherent transmission technologies

基于相干传输技术的灵活光网络

• 批准号: 435362-2012
• 负责人: Tremblay, Christine
• 金额: $ 3.67万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=498598
• 关键词: Flexible; optical; networks; based; coherent

The use of advanced modulation formats, in combination with high-speed analog-to-digital conversion and digital signal processing (DSP) techniques for dispersion compensation and impairment mitigation, can be expected to bring about significant changes to optical networks, through: (1) coherent transceiver modems, an enabling technology for broadcast-and-select network architectures; (2) simplified optical line systems, which do not require active switching, dispersion compensating, and filtering elements; and (3) increased system margin and usable spectrum, which translate into improved flexibility for optical network design. The objective of this research project is to explore the benefit of using tunable transceivers with DSP capability to design future flexible and scalable optical backbone and submarine networks. Novel network architectures based on filterless, semi-filterless and elastic channel spacing concepts will be explored for core and submarine applications, from both theoretical and experimental viewpoints. Routing and spectrum assignment algorithms as well as cost- and energy- efficient filterless optical network design tools will be developed. The originality of the proposed research project lies in the filterless optical networking concept itself, which is looking increasingly like a very serious candidate architecture for future high capacity optical networks because of its main attributes (i.e. cost effectiveness, energy efficiency, and multicast capability). For the Canadian telecommunication industry, the commercial stakes in the development of an all-optical network architecture are considerable. Network design approaches based on increasing the flexibility of the optical layer of the network while minimizing its total cost of ownership and energy consumption are clearly winning strategies for future very high capacity networks. We believe that the passive filterless and semi-filterless networks hold promise and have the practical architectures that can respond to current needs in terms of cost, energy, reliability, flexibility, security and scalability. After three years, the project will produce at least 2 Ph.D. and 8 Master students and will enable the training of several undergraduate students.

高级调制格式的使用，结合高速模数转换和数字信号处理（DSP）技术用于色散补偿和损害减轻，可以预期通过以下方式给光网络带来重大变化：（1）相干收发机调制解调器，一种用于广播和选择网络结构的使能技术;（2）简化的光线路系统，其不需要有源切换、色散补偿和滤波元件;以及（3）增加的系统裕度和可用频谱，其转化为光网络设计的改进的灵活性。本研究项目的目标是探索使用具有DSP功能的可调谐收发器来设计未来灵活和可扩展的光骨干网和海底网络的好处。新的网络架构的基础上无滤波器，半滤波器和弹性信道间隔的概念将探索核心和潜艇应用，从理论和实验的角度。将开发路由和频谱分配算法以及成本和能量有效的无滤波器光网络设计工具。所提出的研究项目的独创性在于无滤波器光网络概念本身，由于其主要属性（即成本效益，能源效率和组播能力），它越来越像一个非常严重的候选架构，为未来的高容量光网络。 对于加拿大电信业来说，开发全光网络架构的商业利益是相当大的。基于增加网络的光层的灵活性同时最小化其总拥有成本和能耗的网络设计方法显然是未来非常高容量网络的获胜策略。 我们相信，无源无滤波器和半无滤波器网络具有前景，并且具有实用的架构，可以在成本，能源，可靠性，灵活性，安全性和可扩展性方面满足当前的需求。三年后，该项目将产生至少2个博士学位。和8名硕士生，并将使几个本科生的培训。