Combating Fiber Nonlinearity Using Dual-Order Raman Amplification and OPC

Mohammad Al-khateeb; Mingming Tan; Tingting Zhang; Andrew D. Ellis

doi:10.1109/LPT.2019.2911131

Combating Fiber Nonlinearity Using Dual-Order Raman Amplification and OPC

Mohammad Al-khateeb, Mingming Tan, Tingting Zhang, Andrew D. Ellis

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

Abstract

We experimentally demonstrate, for the first time, a significant 34-dB nonlinear product power compensation in a mid-link optical phase conjugation (OPC) system using an optimized dual-order distributed Raman amplification (DRA) technique. The dual-order backward (BW)-pumping scheme shows a record signal power symmetry of 97% over 50.4-km single-mode fiber (SMF) spans. We also demonstrate that the required accuracy for span-to-span power alignment is within ±1 dB in order to maintain 20-dB nonlinear product compensation. For a 256-Gb/s dual-polarization-16 QAM transmission over 100.8 km (2×50.4 km) SMF with mid-link OPC, the proposed Raman amplification scheme enables the OPC to improve the nonlinear threshold by 7 dB and the optimum signal launch power by 5 dB compared with the system without OPC.

Original language	English
Pages (from-to)	877-880
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	31
Issue number	11
Early online date	15 Apr 2019
DOIs	https://doi.org/10.1109/LPT.2019.2911131
Publication status	Published - 1 Jun 2019

Bibliographical note

© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Funding: This work was supported by the U.K. EPSRC Programme
under Grant EP/L000091/1 (PEACE) and Grant EP/S003436/1 (PHOS).

Keywords

Optical amplifiers
nonlinear optics
optical fiber communication
phase conjugation

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10.1109/LPT.2019.2911131

Combating Fiber Nonlinearity
© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Cite this

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abstract = "We experimentally demonstrate, for the first time, a significant 34-dB nonlinear product power compensation in a mid-link optical phase conjugation (OPC) system using an optimized dual-order distributed Raman amplification (DRA) technique. The dual-order backward (BW)-pumping scheme shows a record signal power symmetry of 97% over 50.4-km single-mode fiber (SMF) spans. We also demonstrate that the required accuracy for span-to-span power alignment is within ±1 dB in order to maintain 20-dB nonlinear product compensation. For a 256-Gb/s dual-polarization-16 QAM transmission over 100.8 km (2×50.4 km) SMF with mid-link OPC, the proposed Raman amplification scheme enables the OPC to improve the nonlinear threshold by 7 dB and the optimum signal launch power by 5 dB compared with the system without OPC.",

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AB - We experimentally demonstrate, for the first time, a significant 34-dB nonlinear product power compensation in a mid-link optical phase conjugation (OPC) system using an optimized dual-order distributed Raman amplification (DRA) technique. The dual-order backward (BW)-pumping scheme shows a record signal power symmetry of 97% over 50.4-km single-mode fiber (SMF) spans. We also demonstrate that the required accuracy for span-to-span power alignment is within ±1 dB in order to maintain 20-dB nonlinear product compensation. For a 256-Gb/s dual-polarization-16 QAM transmission over 100.8 km (2×50.4 km) SMF with mid-link OPC, the proposed Raman amplification scheme enables the OPC to improve the nonlinear threshold by 7 dB and the optimum signal launch power by 5 dB compared with the system without OPC.

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Combating Fiber Nonlinearity Using Dual-Order Raman Amplification and OPC

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Combating Fibre Nonlinearity Using Dual-Order Raman Amplification and OPC

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Combating Fiber Nonlinearity Using Dual-Order Raman Amplification and OPC

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Combating Fibre Nonlinearity Using Dual-Order Raman Amplification and OPC

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