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Optical phase-front inscription over optical fiber end for flexible control of beam propagation and beam pattern in free space

机译:光纤末端的光学相前题字,可灵活控制自由空间中的光束传播和光束方向图

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摘要

We report a novel compact all-fiber technique to control the beam propagation and beam pattern in free space. By coating an azo-polymer thin film layer on the optical fiber end surface, various surface relief grating (SRG) structures were inscribed over the film using a single step direct exposure of interference patterns to form a novel organic/inorganic composite fiber optics beam shape converter. The linear and concentric SRGs were experimental characterized along with numerical simulations.
机译:我们报告了一种新颖的紧凑型全光纤技术,以控制自由空间中的光束传播和光束方向图。通过在光纤端面上涂覆偶氮聚合物薄膜层,使用单步直接曝光干涉图案将各种表面起伏光栅(SRG)结构刻在薄膜上,以形成新颖的有机/无机复合光纤束形状转换器。对线性和同心SRG进行了实验表征和数值模拟。

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