Demonstration of a 10 Gbit/s Long Reach Wavelength Converting Optical Access Network

This paper demonstrates a 10 Gbit/s wavelength converting access network utilising a centralised optical processing unit that consolidates multiple low cost PONs onto a DWDM backhaul. The centralised processing unit functions as an amplifier, wavelength converter, pre-chirping stage and optical burst equaliser to map legacy PONs onto a DWDM grid for efficient backhaul transmission and to ease the dynamic range requirement of the 10 Gbit/s burst-mode receiver at the optical line termination (OLT). The dispersion limited performance, wavelength tolerance, and burst-mode dynamic range are evaluated demonstrating a maximum range of 62 km for 20 nm of input wavelength variation and a dynamic range of up to 22 dB.

本论文展示了一种10吉比特每秒（10 Gbit/s）波长转换接入网，该网络采用集中式光处理单元（centralised optical processing unit）将多个低成本无源光网络（PON）整合至密集波分复用（DWDM）回传链路中。该集中式光处理单元可作为放大器、波长转换器、预啁啾模块与光突发均衡器，将传统无源光网络映射至密集波分复用栅格，以实现高效回传传输，并缓解光线路终端（OLT）处10吉比特每秒突发模式接收机的动态范围需求压力。本研究对该系统的色散受限传输性能、波长容限与突发模式动态范围进行了评估，结果显示在输入波长偏移20纳米的条件下，其最大传输距离可达62千米，突发模式动态范围最高可达22分贝（dB）。