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Related Experiment Video

Updated: Jul 29, 2025

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

8.2K

Multi-wavelength random fiber laser based on a tilted parallel inscribed apodized fiber Bragg grating array.

Ming Shen, Jiancheng Deng, Yanxin Li

    Optics Letters
    |May 23, 2023
    PubMed
    Summary

    We developed a new multi-wavelength random fiber laser (RFL) using a compact fiber Bragg grating array. This laser offers stable, tunable wavelength emissions with low power thresholds, showing great potential for various applications.

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    Area of Science:

    • Photonics and Optics
    • Fiber Laser Technology

    Background:

    • Multi-wavelength fiber lasers are crucial for applications like optical sensing and spectroscopy.
    • Existing random fiber lasers (RFLs) often face challenges in achieving stable, multi-wavelength output and require complex fabrication.

    Purpose of the Study:

    • To propose and demonstrate a novel, compact apodized fiber Bragg grating array (AFBGA) for multi-wavelength RFLs.
    • To investigate the performance of an RFL utilizing hybrid erbium-Raman gain and the novel AFBGA.

    Main Methods:

    • Fabrication of a compact AFBGA using a femtosecond laser with point-by-point tilted parallel inscription.
    • Implementation of hybrid erbium-Raman gain to lower the lasing threshold.
    • Utilizing a thermo-electric cooler for enhanced RFL stability.

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    Last Updated: Jul 29, 2025

    Writing Bragg Gratings in Multicore Fibers
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    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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    Main Results:

    • Stable emissions at two to six wavelengths were achieved using the novel AFBGA.
    • The hybrid gain mechanism reduced the lasing threshold to a sub-watt level.
    • A three-wavelength RFL demonstrated maximum wavelength and power fluctuations of 64 pm and 0.35 dB, respectively.

    Conclusions:

    • The proposed compact AFBGA enables flexible fabrication and control for multi-wavelength RFLs.
    • The RFL exhibits stable, multi-wavelength output with low threshold and improved stability.
    • This technology offers a promising, versatile solution for multi-wavelength light sources in practical applications.