標題: Artificial Neural-Network-Based Pre-Distortion for High Loss-Budget 60-km Long-Reach Passive Optical Network
作者: Nguyen, Hong-Minh
Huang, Szu-Chi
Wei, Chia-Chien
Chuang, Chun-Yen
Chen, Jason Jyehong
光電工程學系
Department of Photonics
關鍵字: Intensity modulation;OFDM;optical fiber communication;predistortion;neural networks;nonlinear distortion;wavelength division multiplexing
公開日期: 1-一月-2020
摘要: High launch optical power can compensate for severe fading and power loss in long-reach passive optical networks (LR-PONs); however, it also aggravates nonlinear degradation, which necessitates the use of complex DSP-based nonlinear compensation techniques at optical network users (ONUs). DSP-related techniques also necessitate the use of additional hardware/software components by the receiver, which can greatly increase implementation costs and energy consumption, particularly when dealing with large-scale ONU deployment. This is the first study to propose artificial neural network (ANN)-based pre-distortion to eliminate the need for complex DSP at ONUs in a high-launch-power LR-PON, thereby permitting the use of a simplified architecture at the user end. In the first phase of the study, the proposed ANN-based pre-distortion scheme was implemented in a single-channel IMDD OFDM LR-PON, which achieved a data rate of >55 Gbps over 60-km transmission with a loss budget of 30 dB without the need for optical inline- or pre-amplification. In the second phase of experiments, the same scheme was applied to a 4-channel wavelength division multiplexing (WDM) OFDM LR-PON. Here, the proposed scheme achieved data rates of >200 Gbps using launch power of 18 dBm per lane, resulting in a loss budget of roughly 29 dB over 60-km single mode fiber transmission.
URI: http://dx.doi.org/10.1109/ACCESS.2020.3007030
http://hdl.handle.net/11536/155213
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2020.3007030
期刊: IEEE ACCESS
Volume: 8
起始頁: 124824
結束頁: 124832
顯示於類別:期刊論文