Ultra-High-Capacity Optical Communications and Networking: Vertically-Integrated Primitives for a Bufferless, Temporally- and Spectrally-Efficient All-Optical Packet-Switched Netwo

超高容量光通信和网络：用于无缓冲、时间和频谱高效的全光分组交换网络的垂直集成基元

• 批准号: 0123512
• 负责人: Constance Chang-Hasnain
• 金额: $ 46.5万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-11-01 至 2005-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0123512&HistoricalAwards=false
• 关键词: Ultra; Capacity; Optical; Communications; Networking

0123512Chang-HasnainThis proposal was submitted in response to the solicitation NSF 01-65 on "Ultra-High Capacity Optical Communications and Networking." It is well accepted that future, high-speed, highly efficient optical networks must migrate from being circuit switched to ultimately packet switched. One of the key functions for any efficient packet-based network is the ability to avoid contention and blocking by using local buffers at the switching nodes. However, after more than 20 years of research, there has been scant progress in developing a practical all-optical buffer. The PIs propose to research the fundamental building blocks (i.e., "primitives") across different disciplines that will truly enable a bufferless packet-switched all-optical network. This research will be vertically integrated, to investigate unique fundamental primitives including devices, systems, and network architectures. The PIs will investigate the key functionalities, opportunities, and limitations when combining these primitives across these diverse disciplines. The PIs will demonstrate a new repetition/statistical algorithm code at the packet level in which packets are replicated at the transmitter array and sent along different network paths that will minimize the packet latency and packet loss, as well as reduce the complexity of each switching node inside the core network. This algorithm will accommodate and adjust to the transmission and device limitations that exist at the physical layer. Implementing this scheme will require unique 30-nm-wide wavelength-tunable laser devices that can be tuned in a few ns, a novel 3-dimensional fast (ns) high-port-count optical switch, the transmission and reception of packets that are statistical multicast, and all-optical synchronization and packet-header recognition at a switching node. Given the statistical multicasting that is needed to achieve a bufferless network the PI's algorithm design will attempt to conserve the use of the available spectral, temporal, and spatial domains. They will solve unique problems by enabling ultra-wide-wavelength-tunable lasers and by limiting the nonlinear interactions (i.e., Brillouin, FWM) when channel wavelength spacings decrease to below a fraction of the channel information bandwidth. It is not uncommon to have efficiencies as low as 5% for peak rate allocation of bursty video streams. Statistical multiplexing will give an order of magnitude gain over circuit switching even for long-lived data streams. Therefore, their new algorithms and experimental implementations will result in overall deflection loss probability much lower than can otherwise be achieved. This integrated research will take into account that each device and systems limitation will impact the network routing algorithm, and switching and routing efficiencies will drive the device and transmission requirements.

0123512 Chang-Hasnain本提案是应NSF 01-65“超高容量光通信和网络”的要求提交的。“人们普遍认为，未来的高速、高效光网络必须从电路交换过渡到最终的分组交换。任何有效的基于分组的网络的关键功能之一是通过在交换节点使用本地缓冲器来避免竞争和阻塞的能力。然而，经过20多年的研究，在开发实用的全光缓冲器方面进展甚微。PI建议研究基本构建模块（即，“原语”），这将真正实现无缓冲器分组交换全光网络。这项研究将是垂直整合的，以调查独特的基本原语，包括设备，系统和网络架构。PI将调查在这些不同学科中组合这些原语时的关键功能、机会和限制。PI将在数据包级别演示一种新的重复/统计算法代码，其中数据包在发射机阵列上复制，并沿沿着不同的网络路径发送，这将最大限度地减少数据包延迟和数据包丢失，并降低核心网络内每个交换节点的复杂性。该算法将适应和调整物理层存在的传输和设备限制。实现这一计划将需要独特的30 nm宽的波长可调谐激光器，可以在几个ns，一个新的3维快速（ns）高端口数的光开关，发送和接收的数据包是统计组播，和全光同步和包头识别在一个交换节点进行调谐。考虑到实现无缓冲网络所需的统计多播，PI的算法设计将尝试保存可用的频谱、时间和空间域的使用。他们将通过实现超宽波长可调谐激光器和限制非线性相互作用（即，布里渊，FWM）。对于突发视频流的峰值速率分配，具有低至5%的效率并不罕见。统计多路复用将给出一个数量级的增益超过电路交换，即使是长寿命的数据流。因此，他们的新算法和实验实现将导致整体偏转损失概率比其他方法低得多。这项综合研究将考虑到每个设备和系统的限制将影响网络路由算法，而交换和路由效率将推动设备和传输要求。