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Indium oxide overlay gratings realised on glass waveguides using excimer laser ablation

机译:使用准分子激光烧蚀在玻璃波导上实现氧化铟覆盖光栅

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摘要

Relief gratings overlaid on optical waveguides may be used as high-extinction ratio wavelength filters with applications in integrated optics and optical communications. Cross-patterned, high contrast relief grating waveguide structures may potentially perform as 2-D photonic band gaps if properly designed and fabricated. A new waveguide grating design process which relies on a novel grating patterning method and new materials will be presented in this paper. This design consists of the combination of a potassium ion-exchanged singlemode channel waveguide with a high-index film (InOx) overlaid on its upper surface [1]. The high-index overlayer is deposited over a part of the waveguide length. A relief grating is patterned on the InOx layer using 248nm interferometric excimer laser ablation [2].
机译:叠加在光波导上的释放光栅可以用作高消光比波长滤波器,并应用于集成光学和光通信中。如果正确设计和制造,交叉图案的高对比度浮雕光栅波导结构可能会充当二维光子带隙。本文将提出一种新的波导光栅设计过程,该过程依赖于一种新颖的光栅构图方法和新材料。该设计由钾离子交换单模通道波导与覆盖在其上表面的高折射率薄膜(InOx)组成[1]。高折射率覆盖层沉积在一部分波导长度上。使用248nm干涉受激准分子激光烧蚀在InOx层上构图起伏光栅[2]。

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