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Power equalization method of a DFB fiber laser sensor array.

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    This summary is machine-generated.

    This study introduces an optimized array structure for distributed feedback fiber laser (DFB FL) sensor arrays to minimize output power variations. The new design significantly reduces power fluctuations, enhancing sensor performance and efficiency.

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    Area of Science:

    • Optics and Photonics
    • Laser Technology
    • Sensor Systems

    Background:

    • Output power ununiformity in distributed feedback fiber laser (DFB FL) sensor arrays is primarily caused by exponential pump power attenuation.
    • This ununiformity negatively impacts the performance and reliability of sensor arrays.
    • Existing methods for power equalization are insufficient for complex DFB FL sensor arrays.

    Purpose of the Study:

    • To propose and validate a power equalization method for DFB FL sensor arrays based on optimizing array structure.
    • To establish an output power prediction model for DFB FL wavelength division multiplexing (WDM) arrays.
    • To significantly reduce output power fluctuations and enhance overall sensor array performance.

    Main Methods:

    • Analysis of influencing factors on output power flatness in DFB FL arrays.
    • Development of an output power prediction model for DFB FL WDM arrays.
    • Implementation of an array structure optimization scheme using the simulated annealing algorithm.
    • Evaluation of power flatness using the standard deviation coefficient.

    Main Results:

    • An optimized array structure for a 64-element DFB FL sensor array was achieved.
    • Power fluctuation was reduced from 5-10 dB to less than 2.6 dB.
    • Improvements in noise floor, multiplexing capacity, and array design efficiency were observed.

    Conclusions:

    • The proposed array structure optimization method effectively reduces output power ununiformity in DFB FL sensor arrays.
    • The optimized DFB FL sensor array exhibits enhanced performance characteristics, including improved signal-to-noise ratio and greater data capacity.
    • This approach offers a significant advancement in the design and efficiency of DFB FL sensor arrays for various applications.