Advances in Gain Control Techniques for Bismuth-Doped Fiber Amplifier

Authors

  • Lihong Wang Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University and Institute of Lightwave Technology, Beijing Jiaotong University, China
  • Ge Wu Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University and Institute of Lightwave Technology, Beijing Jiaotong University, China
  • Yidan Zhao Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University and Institute of Lightwave Technology, Beijing Jiaotong University, China
  • Jingjing Zheng Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University and Institute of Lightwave Technology, Beijing Jiaotong University, China https://orcid.org/0000-0002-6121-9300
  • Li Pei Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University and Institute of Lightwave Technology, Beijing Jiaotong University, China
  • Tigang Ning Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University and Institute of Lightwave Technology, Beijing Jiaotong University, China

DOI:

https://doi.org/10.47852/bonviewJOPR62027286

Keywords:

bismuth-doped fiber, fiber amplifier, gain control

Abstract

With the explosive growth of global data traffic, extending communication bandwidth is one of the important methods to alleviate the pressure on communication capacity. As the core device of an optical fiber communication system, the bandwidth extension of the optical amplifier is an indispensable research focus. Bismuth-doped fiber amplifier (BDFA) has been widely studied because of its unique broadband luminescence characteristics. In wavelength division multiplexing systems, the signal power fluctuates as the signal goes up and down, and the network is reconstructed. This results in a gain variation of the BDFA, which deteriorates the transmission system performance. The introduction and application of gain control technology can solve this problem well. In addition, the endogenous pump generated by the gain control structure can be combined with the characteristics of bismuth-doped fiber to achieve low-cost and efficient broadband amplification. The combination of these two technologies provides inspiration for the development and application of a broadband amplifier.

 

Received: 20 August 2025 | Revised: 13 October 2025 | Accepted: 18 December 2025

 

Conflicts of Interest

The authors declare that they have no conflicts of interest to this work.

 

Data Availability Statement

The data that support the findings of this study are openly available in Forc-Photonics at https://www.forc-photonics.ru/en/fibers_and_cables/Bi_doped_fibers/.

 

Author Contribution Statement

Lihong Wang: Methodology, Formal analysis, Investigation, Writing – original draft, Visualization. Ge Wu: Methodology, Investigation, Writing – original draft, Visualization. Yidan Zhao:  Validation, Investigation, Writing – review & editing. Jingjing Zheng: Conceptualization, Writing – original draft, Writing – review & editing, Project administration, Funding acquisition. Li Pei: Resources, Supervision. Tigang Ning: Supervision.

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Published

2026-01-09

Issue

Online First

Section

Review

License

Copyright (c) 2026 Authors

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Wang, L. ., Wu, G. ., Zhao, Y. ., Zheng, J. ., Pei, L., & Ning, T. . (2026). Advances in Gain Control Techniques for Bismuth-Doped Fiber Amplifier. Journal of Optics and Photonics Research. https://doi.org/10.47852/bonviewJOPR62027286