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首页> 外文期刊>Optics Letters >Ultrafast laser fabrication of Bragg waveguides in chalcogenide glass
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Ultrafast laser fabrication of Bragg waveguides in chalcogenide glass

机译:硫族化物玻璃中布拉格波导的超快激光制备

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摘要

Bragg waveguides are fundamental components in photonic integrated circuits and are particularly interesting for mid-IR applications in high index, highly nonlinear materials. In this work, we present Bragg waveguides fabricated in bulk chalcogenide glass using an ultrafast laser. Waveguides with near circularly symmetric cross sections and low propagation loss are obtained through spatial and temporal beam shaping. Using a single-pass technique, the waveguide and Bragg structure are formed at the same time. First through sixth order gratings with strengths of up to 25 dB are realized, and performance is evaluated based on the modulation duty cycle of the writing beam.
机译:布拉格波导是光子集成电路中的基本组件,在高折射率,高度非线性材料的中红外应用中特别有趣。在这项工作中,我们介绍了使用超快激光器在块状硫族化物玻璃中制造的布拉格波导。通过空间和时间波束成形,可以获得具有近圆形对称横截面和低传播损耗的波导。使用单通技术,可以同时形成波导和布拉格结构。实现强度高达25 dB的一阶到六阶光栅,并根据写入光束的调制占空比评估性能。

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