Straullu S, Forghieri F, Bosco G, Ferrero V, Gaudino R
Opt Express. 2014 Jan 13;22(1):9-14. doi: 10.1364/OE.22.000009.
We discuss the compatibility between reflective PON architectures and the recently defined ITU-T G.989.1 TWDM-PON. Focusing on the upstream, we experimentally demonstrate that, by using burst-mode coherent detection at OLT, reflective PON can achieve the specification target set for TWDM-PON, without requiring precise wavelength accuracy at ONU. Compared to the companion ECOC 2013 paper, we investigate on the differential optical path loss (DOPL) issue, proposing a simple SOA gain control algorithm to achieve reliable transmission for DOPL up to 17 dB.
我们讨论了反射型无源光网络(PON)架构与最近定义的ITU-T G.989.1时分复用波分复用无源光网络(TWDM-PON)之间的兼容性。聚焦于上行链路,我们通过实验证明,通过在光线路终端(OLT)使用突发模式相干检测,反射型PON可以实现为TWDM-PON设定的规范目标,而无需光网络单元(ONU)具备精确的波长精度。与2013年欧洲光通信会议(ECOC)的配套论文相比,我们研究了差分光路径损耗(DOPL)问题,提出了一种简单的半导体光放大器(SOA)增益控制算法,以实现高达17 dB的DOPL的可靠传输。