超密集波分复用无源光网络技术

[摘要] 超密集波分复用光接入网（UDWDM-PON）方案可以在C波段密排1 000个下行波长和1 000个上行波长，支持1 000个用户。每个用户独立使用一对波长，可实现速率千兆并具有速率万兆的潜力。使用分光器兼容现有光分配网，采用数字相干通信技术，功率预算将可超过43 dB。UDWDM-PON在用户带宽保证、容量汇聚能力、网络覆盖范围等方面发展潜力明显。

[关键词] 超密集波分复用；无源光网络；分光器；相干通信技术

[Abstract] A typical ultra-dense wavelength division multiplexed passive optical network (UDWDM-PON) can accommodate 1 000 pairs of upstream and downstream wavelengths for 1 000 access users. Each user uses a pair of wavelengths independently with one gigabit bandwidth and potentially ten gigabits itself. The system uses the same optical splitters as the legacy optical distribution network. The power budget can be greater than 43 dB by using the digital coherent optical communication technique. The UDWDM-PON has potential advantages in terms of guaranteed user bandwidth, aggregated capacity, and coverage distance.

[Keywords] ultra-dense wavelength division multiplexed; passive optical network; optical spliter; digital coherent communication