High capacity coherent transport systems for elastic optical networks

用于弹性光网络的高容量相干传输系统

• 批准号: 479311-2015
• 负责人: Cartledge, John
• 金额: $ 10.53万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=580019
• 关键词: capacity; coherent; transport; systems; elastic

Coherent optical fiber transport systems exploit a new paradigm in optical fiber communications. Advances in high-speed digital-to-analog converters, analog-to-digital converters, and digital signal processors have allowed substantial improvements in system performance and functionality. These systems also make possible the concept of elastic optical networks for which, unlike conventional dense wavelength division multiplexed networks, the channel carrier frequencies and bandwidths are flexible and dynamically assignable. This allows for efficient use of the available optical spectrum by assigning only the bandwidth needed by a specific modulated signal. The research represents a strategic activity between Queen's University, McGill University and Ciena that is directed at key challenges in coherent optical fiber transport systems: increasing the spectral efficiency and transmission distance of elastic long-haul networks, and increasing the flexibility and capacity of elastic metropolitan networks. The specific objectives of the research are: (i) to develop techniques for mitigating the effects of transmission impairments in elastic long-haul and metropolitan networks that offer improvements in system performance with acceptable levels of complexity, and (ii) to develop multi-dimensional coding techniques for long-haul networks that provide a finer granularity in the number of bits/symbol and that suppress the generation of signal degradations due to fiber nonlinearities. Through the training of highly skilled personnel for the Canadian information and communications sector, the research will develop innovative techniques that challenge current technological limits but are aligned with anticipated increases in signal processing capability, thereby creating competitive advantages for companies in Canada.

相干光纤传输系统开发了光纤通信中的新范例。高速数模转换器、模数转换器和数字信号处理器的进步已经允许系统性能和功能的实质性改进。这些系统还使得弹性光网络的概念成为可能，与传统的密集波分复用网络不同，弹性光网络的信道载波频率和带宽是灵活的并且是可动态分配的。这允许通过仅分配特定调制信号所需的带宽来有效地使用可用光谱。该研究代表了皇后大学，麦吉尔大学和Ciena之间的战略活动，旨在解决相干光纤传输系统的关键挑战：提高弹性长途网络的频谱效率和传输距离，并提高弹性城域网的灵活性和容量。研究的具体目标是：（i）开发用于减轻弹性长距离和城域网中传输损害的影响的技术，这些技术以可接受的复杂程度提供系统性能的改进，以及（ii）开发用于长途网络的多维编码技术，其在比特/比特的数量上提供更精细的粒度。并抑制由于光纤非线性而产生信号劣化。通过为加拿大信息和通信部门培训高技能人员，这项研究将开发创新技术，挑战目前的技术限制，但与信号处理能力的预期增长保持一致，从而为加拿大公司创造竞争优势。