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Related Experiment Video

Updated: Jun 19, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Multiwavelength fiber laser using a spatial mode beating filter.

A J Poustie, N Finlayson, P Harper

    Optics Letters
    |October 22, 2009
    PubMed
    Summary
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    Researchers achieved a multiwavelength comb using doped fiber lasers and multimode fiber. This setup acts as a wavelength-dependent filter, enabling new laser functionalities.

    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Materials Science

    Background:

    • Fiber lasers are crucial for various applications, but generating multiwavelength outputs efficiently remains a challenge.
    • Controlling laser output spectra is essential for applications like spectroscopy and telecommunications.

    Purpose of the Study:

    • To develop a novel method for generating a multiwavelength comb from doped fiber lasers.
    • To investigate the filtering mechanism within the laser cavity.

    Main Methods:

    • Incorporating a section of multimode optical fiber into a single-mode fiber ring cavity of Er(3+)- and Nd(3+)-doped fiber lasers.
    • Analyzing the spatial mode beating phenomenon in the multimode fiber section.

    Main Results:

    More Related Videos

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
    14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

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    Last Updated: Jun 19, 2026

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
    08:48

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

    Published on: November 22, 2019

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
    14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

    • Successfully obtained a multiwavelength comb from the fiber laser system.
    • Demonstrated that the multimode fiber section acts as a wavelength-dependent filter.
    • Identified spatial mode beating between LP(01) and LP(11) modes as the filtering mechanism.

    Conclusions:

    • The integration of multimode fiber into doped fiber lasers provides an effective method for generating multiwavelength combs.
    • Spatial mode beating in multimode fiber offers a novel approach for wavelength filtering in laser systems.
    • This technique has potential applications in areas requiring broadband or multiwavelength laser sources.