TY - JOUR
T1 - Experimental comparison of discrete Fourier transform-spread high-order quadrature amplitude modulation discrete multitone systems for optical interconnection
AU - You, Jialin
AU - Wu, Xinxing
AU - He, Hailian
AU - Xiao, Qinghua
AU - Zeng, Youxu
AU - Chen, Yifan
AU - Dong, Ze
N1 - Publisher Copyright:
© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).
PY - 2019/7/1
Y1 - 2019/7/1
N2 - The performance of discrete Fourier transform-spread (DFT-spread) discrete multitone (DMT) transmission systems based on four high-order quadrature amplitude modulation (QAM) formats (4/16/32/64QAM) for optical interconnection is investigated and experimentally compared on the same platform. We first theoretically study and analyze the benefits of the implemented DFT spread for the peak-to-average power ratio (PAPR) deduction in DMT transmission systems, and then experimentally compare the receiver optical power sensitivities and transmission performance using flexible transceiver configuration in standard single-mode fiber (SSMF) link. Experimental results show that the power penalties are 1.2, 1.8, 2.2, and 2.7 dB for 10 Gbaud DFT-spread DMT signal employing 4/16/32/64QAM over 10-km SSMF transmission. There are, respectively, 0.3, 0.7, 0.9, and 1.1 dB transmission power penalty improvements by the implementation of the DFT-spread scheme, compared with the conventional DMT transmission systems. Furthermore, we experimentally compare the improved fiber nonlinear effect tolerance for the proposed DFT-spread DMT system, which shows the potential reach improvement and thus can provide an abundant system loss budget for leveraging legacy optical access networks. In addition, a comparison of the hardware implementation complexity of the DFT-spread scheme with several typical PAPR deduction schemes is also presented.
AB - The performance of discrete Fourier transform-spread (DFT-spread) discrete multitone (DMT) transmission systems based on four high-order quadrature amplitude modulation (QAM) formats (4/16/32/64QAM) for optical interconnection is investigated and experimentally compared on the same platform. We first theoretically study and analyze the benefits of the implemented DFT spread for the peak-to-average power ratio (PAPR) deduction in DMT transmission systems, and then experimentally compare the receiver optical power sensitivities and transmission performance using flexible transceiver configuration in standard single-mode fiber (SSMF) link. Experimental results show that the power penalties are 1.2, 1.8, 2.2, and 2.7 dB for 10 Gbaud DFT-spread DMT signal employing 4/16/32/64QAM over 10-km SSMF transmission. There are, respectively, 0.3, 0.7, 0.9, and 1.1 dB transmission power penalty improvements by the implementation of the DFT-spread scheme, compared with the conventional DMT transmission systems. Furthermore, we experimentally compare the improved fiber nonlinear effect tolerance for the proposed DFT-spread DMT system, which shows the potential reach improvement and thus can provide an abundant system loss budget for leveraging legacy optical access networks. In addition, a comparison of the hardware implementation complexity of the DFT-spread scheme with several typical PAPR deduction schemes is also presented.
KW - discrete Fourier transform-spread
KW - discrete multitone
KW - high-order quadrature amplitude modulation
KW - optical interconnection
KW - peak-to-average power ratio
UR - http://www.scopus.com/inward/record.url?scp=85069540484&partnerID=8YFLogxK
U2 - 10.1117/1.OE.58.7.076101
DO - 10.1117/1.OE.58.7.076101
M3 - Article
AN - SCOPUS:85069540484
SN - 0091-3286
VL - 58
JO - Optical Engineering
JF - Optical Engineering
IS - 7
M1 - 076101
ER -