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Related Experiment Video

Updated: Jun 12, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

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Published on: April 1, 2020

Efficient zone plate array accessor for optoelectronic integrated circuits: design and fabrication.

K Kodate, E Tokunaga, Y Tatuno

    Applied Optics
    |June 26, 2010
    PubMed
    Summary

    This study presents a novel spatially divided beam splitter for efficient laser diode light coupling into multiple fibers. The device achieves simultaneous focusing and separation, demonstrating high diffraction efficiency.

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    Area of Science:

    • Optics and Photonics
    • Micro-optics fabrication
    • Laser beam manipulation

    Background:

    • Efficient coupling of laser diode light into multiple optical fibers is crucial for various applications.
    • Existing beam splitting technologies often face limitations in terms of efficiency and simultaneous focusing capabilities.

    Purpose of the Study:

    • To design and fabricate a novel spatially divided beam splitter.
    • To achieve simultaneous focusing and separation of laser diode output into multiple fibers.
    • To investigate the focusing characteristics and diffraction efficiency of the designed beam splitter.

    Main Methods:

    • Design of a spatially divided beam splitter utilizing a cylindrical lens and a phase-type linear zone plate array.
    • Prediction of focusing characteristics using skew ray tracing.
    • Fabrication of a three-section linear zone plate array via holographic mask patterning and deep UV printing.

    Main Results:

    • The fabricated linear zone plate array exhibited a linewidth variation from 1.1 to 2.05 micrometers.
    • Diffraction efficiency reached 60% under oblique incident conditions near the Bragg angle.
    • Simultaneous focusing and separation of laser output were successfully achieved by integrating the zone plate array with a cylindrical lens.

    Conclusions:

    • The developed spatially divided beam splitter effectively couples laser diode light into multiple fibers.
    • The device demonstrates high diffraction efficiency and capability for simultaneous focusing and separation.
    • This technology holds potential for advancements in fiber optic communication and sensing systems.