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Research Progress in Tunable Fiber Lasers Based on Multimode Interference Filters.

Liqiang Zhang1,2, Kexin Zhu1, Yicun Yao1,2

  • 1School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252000, China.

Micromachines
|November 25, 2023
PubMed
Summary
This summary is machine-generated.

Multimode interference filters offer a simple and flexible solution for tunable fiber lasers. Their development enhances laser performance and practicality in communication and sensing applications.

Keywords:
multi-core fibermultimode fibermultimode interference filterno-core fibertapered fibertunable fiber laser

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Area of Science:

  • Optics and Photonics
  • Laser Technology
  • Fiber Optics

Background:

  • Tunable fiber lasers are crucial for optical fiber communication and sensing due to their adjustable wavelengths and high beam quality.
  • Fiber filters are essential components in tunable fiber lasers, dictating their performance and spectral characteristics.

Purpose of the Study:

  • To review and analyze multimode interference (MMI) filters for tunable fiber lasers.
  • To explore various MMI filter structures and their working principles.
  • To summarize research progress and discuss future trends in MMI filter-based tunable fiber lasers.

Main Methods:

  • Review of MMI filter structures utilizing multimode fibers, no-core fibers, multi-core fibers, and tapered fibers.
  • Analysis of the working principles and tuning mechanisms of different MMI filters.
  • Summarization of recent research advancements in tunable fiber lasers employing MMI filters.

Main Results:

  • MMI filters offer advantages like simple structure, easy implementation, flexible tuning, and adaptable spectral range design.
  • Various fiber structures (multimode, no-core, multi-core, tapered) can be employed to create effective MMI filters.
  • Research shows significant progress in utilizing MMI filters to enhance tunable fiber laser capabilities.

Conclusions:

  • MMI filters are a promising technology for advancing tunable fiber laser performance.
  • The ongoing development of MMI filters will improve the practicality of continuous and pulsed tunable fiber lasers.
  • Further research into MMI filters will drive innovation in optical fiber communication and sensing.