A Bilayer Plasmonic Metasurface for Polarization‐Insensitive Bidirectional Perfect Absorption

Li, Zhancheng; Liu, Wenwei; Tang, Chengchun; Cheng, Hua; Li, Zhi; Zhang, Yuebian; Li, Junjie; Chen, Shuqi; Tian, Jianguo

doi:10.1002/adts.201900216

Cited by 16 publications

(12 citation statements)

References 43 publications

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“…The photontrapping structure shown in Section 3.6.2 is a good example of using new mechanism in PD, which combines the advantages of photonics crystal formed slow light and typical PIN PD. [247] There are also some interesting simulation results in this area, [255,256] which can be used as a starting point to further improve the performance of high speed PDs on silicon photonics platform.…”

Section: Discussionmentioning

confidence: 99%

High‐Speed Photodetectors on Silicon Photonics Platform for Optical Interconnect

Chen

Shi

et al. 2022

Laser & Photonics Reviews

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A photodetector (PD) converts optical signals into electrical ones and is widely used in optical interconnect. High-speed PDs are in high demand as they are necessary to meet requirements of large-capacity optical interconnect. Many high-performance PDs with various absorption materials and structures are demonstrated on silicon photonics platform, including germanium (Ge) PDs, germanium tin (GeSn) PDs, heterogeneous integrated III-V PDs, all silicon (Si) PDs, 2D material PDs, etc. These kinds of PDs continue to set new records of speed and open an era of ultrahigh-speed optical interconnect. A comprehensive summary of the state-of-the-art high-speed PDs on silicon photonics platform is necessary and meaningful. In this review, the basic metrics and key process technologies for the PDs are introduced, and various types of high-speed PDs based on silicon photonics platform are reviewed and discussed. Furthermore, the summary and perspectives are provided. It is hoped that this review can provide readers more insights into recent advances in high-speed PDs on silicon photonics platform and contribute to the further development.

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Section: Discussionmentioning

confidence: 99%

High‐Speed Photodetectors on Silicon Photonics Platform for Optical Interconnect

Chen

Shi

et al. 2022

Laser & Photonics Reviews

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“…In recent years, numerous MSs with multiple functions have been proposed to manipulate different polarization waves. [15][16][17][18][19][20][21][22][23][24][25][26] Fan et al proposed an MS that could achieve reflection and transmission CP wave operating at two frequency points. [27] The independent amplitude and phase profiles of the designed MS can be obtained by varying the geometrical parameters of the unit-cell structure, vortex beam carrying orbital angular momentum (OAM), [28][29][30][31][32] abnormal refraction, [33] and focusing lens [34][35][36][37][38][39][40] have been studied at the interest frequencies.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, numerous MSs with multiple functions have been proposed to manipulate different polarization waves. [ 15–26 ] Fan et al. proposed an MS that could achieve reflection and transmission CP wave operating at two frequency points.…”

Section: Introductionmentioning

confidence: 99%

Terahertz Transmission‐Type Metasurface for the Linear and Circular Polarization Wavefront Manipulation

Cheng

2022

Advcd Theory and Sims

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A transmission‐type metasurface (MS) based on the combined geometric and transmission phase is proposed and investigated here numerically, which can achieve independently manipulation of the circular polarization (CP) and linear polarization (LP) wavefront at terahertz (THz) region. The unit‐cell of the proposed MS is composed of the dielectric substrate sandwiched with the bilayered inner centrosymmetric‐notched‐elliptic (CNE), outer C‐shaped, and single‐split‐ring (SSR) structures. The proposed MS can convert the normal incident LP wave to its orthogonal one at the lower frequency (f1 = 0.68 THz) after transmission and left‐handed circular polarization to the transmitted right‐handed circular polarization wave or vice versa at the higher frequency (f2 = 1.34 THz). The full 2π phase shifts of the both transmitted LP and CP waves can be realized independently and simultaneously by varying the opening and orientation angles of the outer SSR structure based on the transmission phase and the orientation angle of the inner CNE structure based on geometric phase, respectively. As proofs of concept, anomalous refraction, planar focusing, and vortex beam generation for both LP and CP waves are demonstrated numerically. These findings show great potential applications in imaging and communication systems, providing new possibilities to develop multifunctional THz device for both LP and CP waves.

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“…Based on metamaterials and metasurfaces, the transmission, reflection, and absorption intensity of EM and acoustic waves can be easily manipulated. As a result, near perfect absorbers [22][23][24] , Fano resonances 25 , plasmonically induced transparency 26 , antireflection metasurfaces 27,28 , and some other amplitude manipulation applications have been proposed. By manipulating the polarization of EM waves, polarizers 29 and wave plates 30 have been realized.…”

Section: Introductionmentioning

confidence: 99%

Multidimensional manipulation of wave fields based on artificial microstructures

Zhang¹,

Liu²,

Cheng³

et al. 2020

Opto-Electronic Advances

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112

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Artificial microstructures, which allow us to control and change the properties of wave fields through changing the geometrical parameters and the arrangements of microstructures, have attracted plenty of attentions in the past few decades. Some artificial microstructure based research areas, such as metamaterials, metasurfaces and phononic topological insulators, have seen numerous novel applications and phenomena. The manipulation of different dimensions (phase, amplitude, frequency or polarization) of wave fields, particularly, can be easily achieved at subwavelength scales by metasurfaces. In this review, we focus on the recent developments of wave field manipulations based on artificial microstructures and classify some important applications from the viewpoint of different dimensional manipulations of wave fields. The development tendency of wave field manipulation from single-dimension to multidimensions provides a useful guide for researchers to realize miniaturized and integrated optical and acoustic devices.

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A Bilayer Plasmonic Metasurface for Polarization‐Insensitive Bidirectional Perfect Absorption

Cited by 16 publications

References 43 publications

High‐Speed Photodetectors on Silicon Photonics Platform for Optical Interconnect

High‐Speed Photodetectors on Silicon Photonics Platform for Optical Interconnect

Terahertz Transmission‐Type Metasurface for the Linear and Circular Polarization Wavefront Manipulation

Multidimensional manipulation of wave fields based on artificial microstructures

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