Chromatic Dispersion Estimation Based on CAZAC Sequence for Optical Fiber Communication Systems

Feilong Wu; Peng Guo; Aiying Yang; Yaojun Qiao

doi:10.1109/ACCESS.2019.2944026

Chromatic Dispersion Estimation Based on CAZAC Sequence for Optical Fiber Communication Systems

Feilong Wu, Peng Guo^*, Aiying Yang, Yaojun Qiao

^*Corresponding author for this work

School of Optics and Photonics

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

4 Citations (Scopus)

Abstract

We propose a chromatic dispersion (CD) estimation method based on constant amplitude zero-autocorrelation (CAZAC) sequence and fractional Fourier transform (FrFT) algorithm for optical fiber communication systems, which extends the application of CAZAC sequence. By applying FrFT on the CAZAC sequence signal, the optimal order is searched and employed to estimate the accumulated CD because that the CAZAC sequence shares similar properties with chirp signal. We demonstrate the feasibility of the proposed method by the simulation of a 28 GBaud polarization-division-multiplexed (PDM) quadrature phase-shift keying (QPSK) optical fiber communication system. The error of CD estimation is less than 70 ps/nm for the standard single mode fiber (SSMF) link of 2000 km with OSNR in the range of 10-20 dB and the launch power in the range of 0-4 dBm per channel in a five channel system. It shows that the method is robust to ASE noise and optical fiber nonlinearity. Furthermore, the proposed method has been experimentally verified with the error of CD estimation less than 50 ps/nm after 100-900 km fiber link transmission.

Original language	English
Article number	8850100
Pages (from-to)	139388-139393
Number of pages	6
Journal	IEEE Access
Volume	7
DOIs	https://doi.org/10.1109/ACCESS.2019.2944026
Publication status	Published - 2019

Keywords

CAZAC sequence
Chromatic dispersion
fiber optics systems
fractional domain

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10.1109/ACCESS.2019.2944026

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title = "Chromatic Dispersion Estimation Based on CAZAC Sequence for Optical Fiber Communication Systems",

abstract = "We propose a chromatic dispersion (CD) estimation method based on constant amplitude zero-autocorrelation (CAZAC) sequence and fractional Fourier transform (FrFT) algorithm for optical fiber communication systems, which extends the application of CAZAC sequence. By applying FrFT on the CAZAC sequence signal, the optimal order is searched and employed to estimate the accumulated CD because that the CAZAC sequence shares similar properties with chirp signal. We demonstrate the feasibility of the proposed method by the simulation of a 28 GBaud polarization-division-multiplexed (PDM) quadrature phase-shift keying (QPSK) optical fiber communication system. The error of CD estimation is less than 70 ps/nm for the standard single mode fiber (SSMF) link of 2000 km with OSNR in the range of 10-20 dB and the launch power in the range of 0-4 dBm per channel in a five channel system. It shows that the method is robust to ASE noise and optical fiber nonlinearity. Furthermore, the proposed method has been experimentally verified with the error of CD estimation less than 50 ps/nm after 100-900 km fiber link transmission.",

keywords = "CAZAC sequence, Chromatic dispersion, fiber optics systems, fractional domain",

author = "Feilong Wu and Peng Guo and Aiying Yang and Yaojun Qiao",

note = "Publisher Copyright: {\textcopyright} 2013 IEEE.",

year = "2019",

doi = "10.1109/ACCESS.2019.2944026",

language = "English",

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journal = "IEEE Access",

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T1 - Chromatic Dispersion Estimation Based on CAZAC Sequence for Optical Fiber Communication Systems

AU - Wu, Feilong

AU - Guo, Peng

AU - Yang, Aiying

AU - Qiao, Yaojun

PY - 2019

Y1 - 2019

N2 - We propose a chromatic dispersion (CD) estimation method based on constant amplitude zero-autocorrelation (CAZAC) sequence and fractional Fourier transform (FrFT) algorithm for optical fiber communication systems, which extends the application of CAZAC sequence. By applying FrFT on the CAZAC sequence signal, the optimal order is searched and employed to estimate the accumulated CD because that the CAZAC sequence shares similar properties with chirp signal. We demonstrate the feasibility of the proposed method by the simulation of a 28 GBaud polarization-division-multiplexed (PDM) quadrature phase-shift keying (QPSK) optical fiber communication system. The error of CD estimation is less than 70 ps/nm for the standard single mode fiber (SSMF) link of 2000 km with OSNR in the range of 10-20 dB and the launch power in the range of 0-4 dBm per channel in a five channel system. It shows that the method is robust to ASE noise and optical fiber nonlinearity. Furthermore, the proposed method has been experimentally verified with the error of CD estimation less than 50 ps/nm after 100-900 km fiber link transmission.

AB - We propose a chromatic dispersion (CD) estimation method based on constant amplitude zero-autocorrelation (CAZAC) sequence and fractional Fourier transform (FrFT) algorithm for optical fiber communication systems, which extends the application of CAZAC sequence. By applying FrFT on the CAZAC sequence signal, the optimal order is searched and employed to estimate the accumulated CD because that the CAZAC sequence shares similar properties with chirp signal. We demonstrate the feasibility of the proposed method by the simulation of a 28 GBaud polarization-division-multiplexed (PDM) quadrature phase-shift keying (QPSK) optical fiber communication system. The error of CD estimation is less than 70 ps/nm for the standard single mode fiber (SSMF) link of 2000 km with OSNR in the range of 10-20 dB and the launch power in the range of 0-4 dBm per channel in a five channel system. It shows that the method is robust to ASE noise and optical fiber nonlinearity. Furthermore, the proposed method has been experimentally verified with the error of CD estimation less than 50 ps/nm after 100-900 km fiber link transmission.

KW - CAZAC sequence

KW - Chromatic dispersion

KW - fiber optics systems

KW - fractional domain

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DO - 10.1109/ACCESS.2019.2944026

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EP - 139393

JO - IEEE Access

JF - IEEE Access

M1 - 8850100

ER -

Chromatic Dispersion Estimation Based on CAZAC Sequence for Optical Fiber Communication Systems

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Keywords

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