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LiNbO(3) platforms for optical fiber alignment.

T Ichikawa, M Kagami, H Ito

    Optics Letters
    |December 19, 2007
    PubMed
    Summary
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    A new technique uses excimer-laser ablation and high-speed sawing to create precise grooves in lithium niobate (LiNbO3) substrates. This method enables low-cost fabrication of optical platforms for fiber alignment and waveguide formation.

    Area of Science:

    • Materials Science
    • Optoelectronics
    • Photonics

    Background:

    • Lithium niobate (LiNbO3) is a key material for optical devices.
    • Precise groove fabrication is essential for optical component integration.
    • Existing methods can be complex and costly.

    Purpose of the Study:

    • To develop a simple and cost-effective technique for fabricating grooves in LiNbO3 substrates.
    • To enable the creation of both V-grooves for fiber alignment and vertical grooves for waveguide end-face formation.
    • To demonstrate the versatility of the technique for various optical platform materials.

    Main Methods:

    • Utilizing excimer-laser ablation to shape the grooves.
    • Employing a high-speed rotation saw cut for precise substrate dicing.

    Related Experiment Videos

  • Varying ablation mask shapes to achieve diverse cross-sectional groove profiles.

    • Main Results:

    • Successful fabrication of V-grooves and vertical grooves in LiNbO3.
    • Achieved optical-quality cutting faces.
    • Demonstrated the ability to create various groove shapes through mask design.

    Conclusions:

    • The proposed method offers a simple, low-cost approach to fabricating optical platforms.
    • The technique is applicable to LiNbO3, glasses, polymers, and semiconductors.
    • This advancement facilitates the integration of optical components and the development of new photonic devices.