TY - JOUR
T1 - PAM-8 IM/DD Transmission Based on Modified Lookup Table Nonlinear Predistortion
AU - Zhang, Jiao
AU - Gou, Pengqi
AU - Kong, Miao
AU - Fang, Kaibo
AU - Xiao, Jiangnan
AU - Zhang, Qi
AU - Xin, Xiangjun
AU - Yu, Jianjun
N1 - Publisher Copyright:
© 2009-2012 IEEE.
PY - 2018/6
Y1 - 2018/6
N2 - In this paper, a modified lookup table (LUT) nonlinear predistortion method is proposed. With the modified LUT method, the number of patterns and the computational complexity can be reduced by half with a similar system performance comparing with normal LUT. We experimentally demonstrate an 8-ary pulse amplitude modulation (PAM-8) intensity modulation and direct detection (IM/DD) transmission over 15-km fiber using a directly modulated laser (DML) based on modified LUT. Around 1-dB receiver sensitivity improvement at bit-error ratio of 3.8 × 10-3 is achieved by adopting a modified LUT over 15-km fiber transmission at 2 Gbaud based on a commercial DML. In addition, we also experimentally demonstrate Mach-Zehnder modulator based 40 Gbaud PAM-8 IM/DD transmission under back-to-back case, about 1-dB receiver sensitivity can also be improved.
AB - In this paper, a modified lookup table (LUT) nonlinear predistortion method is proposed. With the modified LUT method, the number of patterns and the computational complexity can be reduced by half with a similar system performance comparing with normal LUT. We experimentally demonstrate an 8-ary pulse amplitude modulation (PAM-8) intensity modulation and direct detection (IM/DD) transmission over 15-km fiber using a directly modulated laser (DML) based on modified LUT. Around 1-dB receiver sensitivity improvement at bit-error ratio of 3.8 × 10-3 is achieved by adopting a modified LUT over 15-km fiber transmission at 2 Gbaud based on a commercial DML. In addition, we also experimentally demonstrate Mach-Zehnder modulator based 40 Gbaud PAM-8 IM/DD transmission under back-to-back case, about 1-dB receiver sensitivity can also be improved.
KW - Pulse amplitude modulation (PAM)
KW - intensity modulation and direct detection (IM/DD)
KW - look-up table (LUT) nonlinear pre-distortion
UR - http://www.scopus.com/inward/record.url?scp=85045724240&partnerID=8YFLogxK
U2 - 10.1109/JPHOT.2018.2828869
DO - 10.1109/JPHOT.2018.2828869
M3 - Article
AN - SCOPUS:85045724240
SN - 1943-0655
VL - 10
JO - IEEE Photonics Journal
JF - IEEE Photonics Journal
IS - 3
M1 - 7903709
ER -