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Binary radially radially-chirped Bragg and graded graded-index Fresnelfibre lenses for singlemode fibre to photonic crystal coupling

机译:双模径向radially线性布拉格光栅和渐变折射率菲涅尔光纤透镜,用于单模光纤到光子晶体耦合

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摘要

Binary radially radially-chirped Bragg and graded graded-index Fresnel fibre lens couplers arerncompared. With 41 μm focal length, and 2.3 ave average refractive rage index index, a radially radially-chirped Braggrnfibre lens reduces spot spot-size from 4.5 μm to 600nm incurring 0.4dB loss.
机译:比较了二进制径向chi线性布拉格光栅和渐变折射率菲涅耳光纤透镜耦合器。具有41μm的焦距和2.3 ave的平均折光指数,径向径向chi的Braggrnfibre透镜将光斑尺寸从4.5μm减小到600nm,造成0.4dB的损耗。

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