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Mode-selective photonic lanterns for space-division multiplexing.

Sergio G Leon-Saval, Nicolas K Fontaine, Joel R Salazar-Gil

    Optics Express
    |February 12, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a novel 3x1 fiber photonic lantern spatial-multiplexer. This device achieves high mode-selectivity and low insertion loss, compatible with few-mode fiber technology.

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    Area of Science:

    • Optical Engineering
    • Photonics
    • Telecommunications

    Background:

    • Few-mode fibers (FMFs) enable higher data transmission capacity by supporting multiple spatial modes.
    • Efficiently multiplexing and demultiplexing these spatial modes is crucial for FMF-based systems.
    • Existing mode (de)multiplexers often suffer from high insertion loss and mode-dependent loss.

    Purpose of the Study:

    • To demonstrate a novel 3x1 fiber-based photonic lantern spatial-multiplexer.
    • To achieve high mode-selectivity and low insertion loss.
    • To ensure compatibility with existing few-mode fiber infrastructure.

    Main Methods:

    • Fabrication of a 3x1 fiber-based photonic lantern.
    • Characterization of the device's mode-selectivity.
    • Measurement of transmission loss and insertion loss when coupled to a graded-index few-mode fiber.
    • Evaluation of mode-dependent loss.

    Main Results:

    • Achieved mode-selectivity greater than 6 dB.
    • Demonstrated transmission loss of less than 0.3 dB.
    • Total insertion loss coupled to a graded-index few-mode fiber was less than 2 dB.
    • Mode-dependent loss was below 0.5 dB.

    Conclusions:

    • The developed photonic lantern spatial-multiplexer offers superior performance compared to existing devices.
    • The device exhibits the lowest reported insertion and mode-dependent loss for such components.
    • The multiplexer is fully compatible with conventional few-mode fiber technology and broadband operation, paving the way for enhanced optical communication systems.