Monolithic‐Integrated Multiplexed Devices Based on Metasurface‐Driven Guided Waves,Advanced Theory and Simulations

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Monolithic‐Integrated Multiplexed Devices Based on Metasurface‐Driven Guided Waves
Advanced Theory and Simulations ( IF 2.9 ) Pub Date : 2021-01-12 , DOI: 10.1002/adts.202000239
Yingli Ha _{1,

2} , Yinghui Guo _{1,

2} , Mingbo Pu _{1,

2} , Xiong Li _{1,

2} , Xiaoliang Ma _{1,

2} , Zuojun Zhang _{1,

2} , Xiangang Luo _{1,

2}

Affiliation

The appearance of metasurfaces has solved the difficult problems of bulkiness, the complexity of traditional optics, and arbitrary optical response controlling. However, most free‐space metasurfaces and existing integrated metadevices do not meet the criteria of full on‐chip integration toward low loss and high information transmission capacity. Here, by decorating silicon‐on‐insulator waveguides with metasurfaces, one can realize the arbitrary phase and intensity manipulation of guided waves. Four‐channel multiplexer is demonstrated with inherent advantages of low loss and independent transmission of electromagnetic waves in x and y directions. As proof‐of‐concept demonstrations, monolithic‐integrated multiplexed orbital angular momentum (OAM) and holographic generators are developed at 1550 nm to realize high information transmission capacity, low loss, and low crosstalk. Specifically, when the electromagnetic wave is incident from x, −x, y, and −y directions, four kinds of OAM mode with different topological charge values (−1, +1, +2, and −2), and four different holographic images of the letter “U,” “C,” “A,” and “S” can be obtained with the four‐channel multiplexed OAM generator and holographic display device, respectively. The design methods proposed here are expected to open a new perspective for future versatile utilization of driven guided waves to achieve numerous functionalities.

中文翻译：

基于超表面驱动导波的单片集成多路复用设备

超表面的出现解决了体积大，传统光学的复杂性和任意光学响应控制的难题。但是，大多数自由空间元表面和现有的集成元设备都无法满足朝着低损耗和高信息传输能力进行完全片上集成的标准。在这里，通过用超表面装饰绝缘体上硅波导，可以实现导波的任意相位和强度控制。四通道多路复用器具有低损耗和在x和y中独立传输电磁波的固有优势指示。作为概念验证的演示，在1550 nm处开发了单片集成多路复用轨道角动量（OAM）和全息发生器，以实现高信息传输能力，低损耗和低串扰。具体地，当电磁波从x，-x，y和-y入射时方向，四种具有不同拓扑电荷值（-1，+ 1，+ 2和-2）的OAM模式，以及字母“ U”，“ C”，“ A”和“ S”的四种不同全息图像可以分别通过四通道多路复用OAM发生器和全息显示设备获得。预期这里提出的设计方法将为驱动波的未来多功能利用打开新的视野，以实现众多功能。

更新日期：2021-02-04

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