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Writing Bragg Gratings in Multicore Fibers
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单向合的奇拉纤维格子 单向合的奇拉纤维格子

Donghui Wang, Chao Ma, Hongye Wang

    Optics letters
    |February 15, 2024
    PubMed
    概括

    我们开发了一种单向合合纤维格子 (UCFG),允许向后传播合到模式,同时禁止向前合. 这一突破使光学设备的新应用成为可能.

    科学领域:

    • 光子学是指光子学的使用方法.
    • 光纤技术是光纤技术的一种.
    • 状元物质 (Chiral Metamaterials) 是一种基质元物质.

    背景情况:

    • 状纤维网格通常表现出相互合.
    • 单向合对于先进的光学功能至关重要.

    研究的目的:

    • 为了研究具有螺旋折射率 (RI) 和损失调制的单向合合纤维格子 (UCFG).
    • 为了证明禁止向前合和向后合到形模式.

    主要方法:

    • 使用光束传播方法 (BPM) 模拟模型.
    • 采用合模式分析来理解非赫密斯合矩阵.

    主要成果:

    • 通过在 RI 和损失调制之间引入 π/2 相差来实现单向合.
    • 禁止基本模式的向前传播.
    • 倒向传播将基本模式与状模式相结合,传输率差异高达30dB.

    结论:

    • UCFG的设计允许非互惠的光传播.
    • UCFG显示出作为一个被动波束发生器,过器和探测器的潜力.

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