Direct and Efficient Optical Coupling Into Plasmonic Integrated Circuits From Optical Fibers
Direct and Efficient Optical Coupling Into Plasmonic Integrated Circuits From Optical Fibers
复制标题
从光纤直接高效地光耦合到等离子体集成电路
DOI：
10.1109/lpt.2016.2533583
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发表时间：
2016
影响因子：
2.6
通讯作者：
Alan X. Wang
中科院分区：
文献类型：
--
作者：
Qian Gao;Fanghui Ren;Alan X. Wang
我们展示了使用超紧凑等离子体偶极纳米天线在 1.55 μm 波长下从光纤到等离子体集成电路 (PIC) 的直接高效光耦合。 PIC 由缝隙波导和单芯片集成八木宇田天线组成。为了提高光纤的光耦合效率，我们添加了500 nm厚的高折射率Su-8薄膜作为顶部包层。我们通过实验实现了从高数值孔径光纤到等离子体缝隙波导的 8.6% 耦合输入效率，以及从等离子体缝隙波导的 46% 总耦合输出效率。我们还定量地描述了耦合效率对入射光光斑尺寸的依赖性。
We demonstrate direct and efficient optical coupling from an optical fiber into plasmonic integrated circuits (PICs) at 1.55-μm wavelength using ultra-compact plasmonic dipole nanoantennas. The PICs consist of slot waveguides with single-chip integrated Yagi-Uda antennas. To improve the optical coupling efficiency from optical fibers, we add 500-nm-thick Su-8 film with a high refractive index as the top cladding. We experimentally achieve 8.6% couple-in efficiency from a high numerical aperture fiber to the plasmonic slot waveguide and 46% total couple-out efficiency from the plasmonic slot waveguide. We also quantitatively characterize the dependence of the couple-in efficiency to the spot size of the incident light.
影响因子：
10.8
作者：
Kriesch, Arian;Burgos, Stanley P.;Peschel, Ulf
通讯作者：
Peschel, Ulf