Abstract
In this paper, we experimentally compared the performance of bit-loading discrete multi-tone (DMT) signal and discrete-Fourier-transform spread (DFT-Spread) DMT signal with pre-equalization in Intensity Modulation with Direct Detection (IM-DD) system. We first experimentally demonstrated that the bit error ratio (BER) of DFT-Spread DMT signal with optimized Quadric Curve (QC) fitting-based pre-equalization outperforms Zero-Forcing based pre-equalization in O-band over 20-km transmission utilizing directly modulated laser (DML). We also experimentally demonstrated that DFT-Spread DMT signal with optimized QC fitting pre-equalization shows better BER performance than bit-loading DMT signal in 95Gbit/s signal transmission with 19GHz bandwidth. The BER of bit-loading DMT signal and DFT-Spread DMT signal with optimized QC fitting pre-equalization after 20-km SSMF transmission at -1 dBm received optical power (ROP) are 5.8×10-3 and 1.8×10-3, respectively.
© 2018 The Author(s)
PDF ArticleMore Like This
Taiping Ye, Jing Zhang, Xingwen Yi, Changyuan Yu, and Kun Qiu
SpM4E.2 Signal Processing in Photonic Communications (SPPCom) 2016
Shaohua An, Qingming Zhu, Jingchi Li, Hongxin Pang, and Yikai Su
OT4A.10 Optoelectronic Devices and Integration (OEDI) 2018
Peixuan Li, Lilin Yi, Lei Xue, and Weisheng Hu
W2A.46 Optical Fiber Communication Conference (OFC) 2018