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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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Multimode fiber coupler.

K Ogawa, A R McCormick

    Applied Optics
    |March 6, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed two plastic-clad multimode fiber couplers. Cross-type couplers achieved 30-50 dB coupling efficiency, while parallel-type couplers exhibited low loss and 15-30 dB efficiency, aligning with theoretical predictions.

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    Area of Science:

    • Optoelectronics
    • Fiber optics engineering

    Background:

    • Multimode fiber couplers are essential components in optical communication systems.
    • Plastic-clad fibers offer potential advantages in cost and flexibility for fiber optic applications.

    Purpose of the Study:

    • To design and characterize two novel types of multimode fiber couplers using plastic-clad fibers.
    • To evaluate the coupling efficiency and transmission loss of these coupler designs.

    Main Methods:

    • Fabrication of cross-type and parallel-type multimode fiber couplers using plastic-clad fibers.
    • Experimental measurement of coupling efficiencies and transmission losses for both coupler types.
    • Comparison of experimental results with theoretical models.

    Main Results:

    • Cross-type couplers demonstrated coupling efficiencies ranging from 30 dB to 50 dB, influenced by the crossover angle.
    • Parallel-type couplers showed low transmission loss with coupling efficiencies between 15 dB and 30 dB, dependent on coupling length.
    • Experimental data showed strong agreement with theoretical predictions for both coupler designs.

    Conclusions:

    • The developed plastic-clad multimode fiber couplers meet performance expectations.
    • Both cross-type and parallel-type designs offer viable solutions for optical coupling applications.
    • The study validates the theoretical framework for plastic-clad fiber coupler design.