论文标题

通过掺入2D层氧化石墨烯膜实现的高性能集成极化器

High performance integrated polarizers achieved by incorporating 2D layered graphene oxide films

论文作者

Wu, Jiayang, Yang, Yunyi, Zhang, Yuning, Qu, Yang, Xu, Xingyuan, Jia, Linnan, Liang, Yao, Chu, Sai T., Little, Brent E., Morandotti, Roberto, Jia, Baohua, Moss, David

论文摘要

极化器和极化选择性谐振腔(例如环谐振器,光栅)是用于摄影应用,相干光学检测,极化 - 分离式插曲,光学传感和液晶显示器的关键组成部分。我们通过将它们与2D石墨烯(GO)分层薄膜整合在一起来证明波导极化器和极化区分微环共振器(MRR)。我们通过基于溶液的,逐层传递的无涂层方法与光刻和升降机结合的基于溶液的,逐层的无涂层方法来精确控制膜的厚度,放置和尺寸。这克服了2D材料的层传输方法的局限性,并且是与2D材料合并的制造集成光子设备的重大进步。我们测量波导偏振器的不同膜厚度和长度与波长,极化和功率,测量高极化损失(PDL)约为53.8 dB。对于Go涂层的MRR,我们实现了8.3 dB的TE/TM极化的消光比差。我们还介绍了2D层GO膜的线性光学特性的测量值,该膜产生GO膜的材料损失各向异性以及膜损失各向异性与偏振依赖性模式的相对贡献。我们的结果为分层GO膜从2D行为转变为类似行为的过渡提供了有趣的物理见解,并确认了基于GO的集成极化选择性设备的高性能。

Polarizers and polarization selective resonant cavities (e.g., ring resonators, gratings), are key components for applications to photography, coherent optical detection, polarization-division-multiplexing, optical sensing and liquid crystal displays. We demonstrate waveguide polarizers and polarization discriminating micro-ring resonators (MRRs) by integrating them with 2D graphene oxide (GO) layered thin films. We achieve precise control of the thickness, placement, and size of the films integrated onto photonic devices with a solution based, layer-by-layer transfer-free coating method combined with photolithography and lift-off. This overcomes limitations of layer transfer methods for 2D materials and is a significant advance to manufacturing integrated photonic devices incorporated with 2D materials. We measure the waveguide polarizer for different film thicknesses and lengths versus wavelength, polarization, and power, measuring a high polarization dependent loss (PDL) of ~ 53.8 dB. For GO-coated MRRs, we achieve an extinction ratio difference for TE/TM polarizations of 8.3-dB. We also present measurements of the linear optical properties of 2D layered GO films that yield the material loss anisotropy of the GO films and relative contribution of film loss anisotropy versus polarization-dependent mode overlap. Our results offer interesting physical insights into the transition of the layered GO films from 2D behaviour to quasi bulk like behavior and confirm the high performance of GO based integrated polarization selective devices.

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