Open AccessEnhanced 3D-CAP modulation with information-inserted time slots for seven-core fiber transmissions
Author(s) -
Jingyi Zhang,
Bo Liu,
Yaya Mao,
Jianxin Ren,
Shun Han,
Shuaidong Chen,
Xinguang Xu,
Xiangyu Wu,
Xiumin Song,
Lei Jiang,
Junfeng Zhao
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.398383
Subject(s) - bit error rate , modulation (music) , optics , transmission (telecommunications) , pulse position modulation , core (optical fiber) , phase modulation , computer science , pulse amplitude modulation , telecommunications , physics , acoustics , channel (broadcasting) , phase noise , detector , pulse (music)
An enhanced three-dimensional carrier-less amplitude phase (3D-CAP) modulation with information-inserted time slots is proposed in this paper. Compared with the traditional 3D-CAP, the proposed scheme can reduce the value of the up-sampling factor by loading information on the time slots position, thus achieving better bit error rate (BER) performance under the same bit rate. An experiment demonstrating 43.75 Gb/s MIMO-free transmission employing the proposed enhanced 3D-CAP modulation over 2 km weakly coupled 7-core fiber is successfully carried out. The experimental results show that the difference between the best and worst core is about 1.7 dB in receiver sensitivity at a BER of 1 × 10 -3 due to the geometrical reason, and the proposed scheme outperforms the traditional 3D-CAP-16 by 2.7 dB in core-1.