Acta Optica Sinica, Volume. 39, Issue 6, 0606003(2019)
50 Gbit/s NRZ IM-DD Downstream Transmission System Based on 25G-Class Optical Components
The fourth-order pulse amplitude modulation signal requires high linearity and a small dispersion tolerance in an optoelectronic device. The bandwidth limitation of the 10G-class optics device severely degrades system performance. This study describes a 50 Gbit/s non-return zero (NRZ) signal transmission scheme using commercial 25G-class optical components. Herein, for a back-to-back and 25-km standard single-mode fiber transmission, the maximum likelihood sequence estimation and decision feedback equalization based on the least mean square algorithm are used for decoding. A comparison of the bit error rate performances under different received optical power conditions proves that the 50 Gbit/s NRZ signal transmission based on the 25G-class optics device can act as a single-wavelength 50 Gbit/s candidate solution.
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Wei Chen, Yingxiong Song, Zhengxuan Li, Chengcheng Li, Jian Chen, Yingchun Li. 50 Gbit/s NRZ IM-DD Downstream Transmission System Based on 25G-Class Optical Components[J]. Acta Optica Sinica, 2019, 39(6): 0606003
Category: Fiber Optics and Optical Communications
Received: Jan. 3, 2019
Accepted: Mar. 21, 2019
Published Online: Jun. 17, 2019
The Author Email: Chen Wei (davidchan@shu.edu.cn), Chen Jian (chenjian@shu.edu.cn)