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Multi-channel phase regeneration of QPSK signals based on phase sensitive amplification

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Abstract

In this paper, we propose and demonstrate simultaneous phase regeneration of four different channels of QPSK signal based on phase sensitive amplification. The configuration can be divided into two parts. The first one uses four wave mixing in high nonlinear fiber (HNLF) to generate the corresponding three harmonic conjugates precisely at the frequency of the original signals. The other one uses optical combiner to realize coherent addition which is aimed at completely removing the interaction in phase regeneration stage. The simulation results suggest that this scheme can optimize signal constellation to a large extend especially in high noise environment. Besides, optical signal to noise ratio (OSNR) can improve more than 3 dB while the bit-error-rate (BER) reaches 10–3 with a constant white noise and 15° phase noise.

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Acknowledgements

This work was supported in part by the National Natural Science Foundation of China (NSFC) (Grant No. 61372118).

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Authors and Affiliations

  1. State Key Lab of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Post and Telecommunications, Beijing, 100876, China

    Hongxiang Wang, Tiantian Luo & Yuefeng Ji

Authors
  1. Hongxiang Wang
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  2. Tiantian Luo
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  3. Yuefeng Ji
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Corresponding author

Correspondence to Yuefeng Ji.

Additional information

Invited, Wuhan Optoelectronics Forum (WHOF) 129

Hongxiang Wang is currently an associate professor at the School of Information and Communication Engineering, Beijing University of Posts and Telecommunications. His present research interests are focused on all optical signal processing in optical communications and networks.

Tiantian Luo received the bachelor degree from Beijing Jiaotong University. She is currently pursuing the Master degree in Broadband Network Innovation Research Center of Beijing University of Posts and Telecommunications. Her present research work involves all optical phase regeneration for signals with advanced modulation formats.

Yuefeng Ji is currently a professor at the School of Information and Communication Engineering, Beijing University of Posts and Telecommunications. His present research work involves optical communication and broadband information network.

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Wang, H., Luo, T. & Ji, Y. Multi-channel phase regeneration of QPSK signals based on phase sensitive amplification. Front. Optoelectron. 12, 24–30 (2019). https://doi.org/10.1007/s12200-018-0754-8

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  • DOI: https://doi.org/10.1007/s12200-018-0754-8

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