TY - JOUR
T1 - Experimental estimation of inter-channel nonlinearity power by using differential pilot
AU - Zhou, Jingru
AU - Yang, Aiying
AU - Guo, Peng
AU - Zhuang, Lingwei
AU - Guo, Shaojian
AU - Qiao, Yaojun
N1 - Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2020/9
Y1 - 2020/9
N2 - In this paper, we present the first experimental demonstration of inter-channel nonlinearity (NL) estimation with differential pilot (DP). This method has a simplified encoding structure of transmitter and low complexity. The distribution of different components in the received signal spectrum can be differentiated with Fast Fourier Transform (FFT), and the inter-channel NL power can be obtained by power subtraction. To verify the practicability of this method, a 25-GBaud coherent quadrature-phase-shift-keying (QPSK) wavelength division multiplexing (WDM) experiment system is employed with the launch power of 0–10 dBm per channel over 900-km standard single-mode fiber (SSMF). The results demonstrate that the inter-channel NL power estimation error is less than 1.5 dB when launch power is larger than 4 dBm per channel. Therefore, this method has good practicability for the inter-channel NL power estimation of coherent WDM systems.
AB - In this paper, we present the first experimental demonstration of inter-channel nonlinearity (NL) estimation with differential pilot (DP). This method has a simplified encoding structure of transmitter and low complexity. The distribution of different components in the received signal spectrum can be differentiated with Fast Fourier Transform (FFT), and the inter-channel NL power can be obtained by power subtraction. To verify the practicability of this method, a 25-GBaud coherent quadrature-phase-shift-keying (QPSK) wavelength division multiplexing (WDM) experiment system is employed with the launch power of 0–10 dBm per channel over 900-km standard single-mode fiber (SSMF). The results demonstrate that the inter-channel NL power estimation error is less than 1.5 dB when launch power is larger than 4 dBm per channel. Therefore, this method has good practicability for the inter-channel NL power estimation of coherent WDM systems.
KW - Coherent optical communication
KW - Differential pilot (DP)
KW - Inter-channel nonlinearity (NL)
UR - https://www.scopus.com/pages/publications/85084950854
U2 - 10.1016/j.yofte.2020.102256
DO - 10.1016/j.yofte.2020.102256
M3 - Article
AN - SCOPUS:85084950854
SN - 1068-5200
VL - 58
JO - Optical Fiber Technology
JF - Optical Fiber Technology
M1 - 102256
ER -