Experimental estimation of inter-channel nonlinearity power by using differential pilot

Jingru Zhou, Aiying Yang*, Peng Guo, Lingwei Zhuang, Shaojian Guo, Yaojun Qiao

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

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.

源语言英语
文章编号102256
期刊Optical Fiber Technology
58
DOI
出版状态已出版 - 9月 2020

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