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

Jingru Zhou; Aiying Yang; Peng Guo; Lingwei Zhuang; Shaojian Guo; Yaojun Qiao

doi:10.1016/j.yofte.2020.102256

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

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

^*Corresponding author for this work

Beijing University of Posts and Telecommunications
Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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.

Original language	English
Article number	102256
Journal	Optical Fiber Technology
Volume	58
DOIs	https://doi.org/10.1016/j.yofte.2020.102256
Publication status	Published - Sept 2020
Externally published	Yes

Keywords

Coherent optical communication
Differential pilot (DP)
Inter-channel nonlinearity (NL)

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10.1016/j.yofte.2020.102256

Cite this

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title = "Experimental estimation of inter-channel nonlinearity power by using differential pilot",

abstract = "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{\textendash}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.",

keywords = "Coherent optical communication, Differential pilot (DP), Inter-channel nonlinearity (NL)",

author = "Jingru Zhou and Aiying Yang and Peng Guo and Lingwei Zhuang and Shaojian Guo and Yaojun Qiao",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Inc.",

year = "2020",

month = sep,

doi = "10.1016/j.yofte.2020.102256",

language = "English",

volume = "58",

journal = "Optical Fiber Technology",

issn = "1068-5200",

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}

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

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)

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SN - 1068-5200

VL - 58

JO - Optical Fiber Technology

JF - Optical Fiber Technology

M1 - 102256

ER -

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

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Keywords

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