Liu Bo, Xin Xiangjun, Zhang Lijia, Yu Jianjun
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Opt Express. 2011 Jul 18;19(15):14542-8. doi: 10.1364/OE.19.014542.
This paper has experimentally demonstrated and analyzed the performance of 2.5-Gb/s × 3-channel upstream transmission in electrical code divided multiplexing-orthogonal frequency division multiplexing access (ECDM-OFDM) passive optical network (PON). The colorless upstream link can be realized in ECDM-OFDM-PON. The experimental results show that the performance degradation due to optical beating interference (OBI) noise can be well suppressed in this network when the three channels adopt the same upstream wavelength. Compared with the WDM-OFDM-PON upstream signals without ECDM, the error floor shows about three orders of magnitude improvement due to the code gain when the same wavelength is used for all upstream signals.
本文通过实验论证并分析了电码分复用-正交频分复用接入（ECDM-OFDM）无源光网络（PON）中2.5 Gb/s×3通道上行传输的性能。在ECDM-OFDM-PON中可实现无色上行链路。实验结果表明，当三个通道采用相同的上行波长时，该网络中由光拍频干扰（OBI）噪声导致的性能下降可得到很好的抑制。与没有ECDM的波分复用-正交频分复用无源光网络（WDM-OFDM-PON）上行信号相比，当所有上行信号使用相同波长时，由于码增益，误码平台显示出约三个数量级的改善。
