Demultiplexing device based on metasurface of V-shaped optical antenna and working method of demultiplexing device

A metasurface and optical antenna technology, applied in the field of metamaterials and integrated photonic devices, can solve the problems of difficult integration, difficult large-scale application, high cost, etc., and achieve the effect of reducing length, flexible modulation, and facilitating integration

Inactive Publication Date: 2019-04-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing demultiplexing devices have problems such as large size, high cost, difficulty in integration, and difficulty in large-scale application, making it difficult to meet the needs of large-scale applications such as data centers and Internet sensing nodes.

Method used

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  • Demultiplexing device based on metasurface of V-shaped optical antenna and working method of demultiplexing device
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  • Demultiplexing device based on metasurface of V-shaped optical antenna and working method of demultiplexing device

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Embodiment 1

[0044] A demultiplexing device based on a V-shaped optical antenna metasurface, such as figure 2 As shown, it includes a base and several V-shaped antenna unit groups periodically arranged on the base. The demultiplexing device is a rectangle. Each V-shaped antenna unit group is arranged in sequence along the X axis and arranged in parallel along the Y axis. The axis is the longer side of the demultiplexing device, and the Y axis is the adjacent side of the longer side of the demultiplexing device (the device can be adjusted according to specific needs). Each V-shaped antenna unit group includes 6 V-shaped antennas, The schematic diagram of the structure of a single V-shaped antenna is shown in figure 1 shown. The phase difference between adjacent V-shaped antennas is π / 3, achieving phase coverage from 0 to 2π. The demultiplexing device of the present invention can realize different angle deflection for multi-wavelength light in a specific band.

[0045] Based on the gener...

Embodiment 2

[0048] According to a kind of demultiplexing device based on V-shaped optical antenna metasurface described in embodiment 1, its difference is that,

[0049] The 6 V-shaped antennas include V-shaped antenna 1, V-shaped antenna 2, V-shaped antenna 3, V-shaped antenna 4, V-shaped antenna 5, and V-shaped antenna 6 arranged in sequence. V-shaped antenna 1 and V-shaped antenna 4 are about X Axisymmetric, the V-shaped antenna 2 and the V-shaped antenna 5 are symmetrical about the X-axis, and the V-shaped antenna 3 and the V-shaped antenna 6 are symmetrical about the X-axis.

[0050] When the included angle of V-shaped antenna 1 is 45°, the arm length of V-shaped antenna 1 is 0.28um; when the included angle of V-shaped antenna 2 is 90°, the arm length of V-shaped antenna 2 is 0.26um; When the included angle is 135°, the arm length of the V-shaped antenna 3 is 0.22um; each V-shaped antenna includes two connected arms, and an included angle is formed between the two arms.

Embodiment 3

[0052] According to a kind of demultiplexing device based on V-shaped optical antenna metasurface described in embodiment 1, its difference is that,

[0053] When the included angle of V-shaped antenna 1 is 45°, the arm length of V-shaped antenna 1 is 0.3um; when the included angle of V-shaped antenna 2 is 90°, the arm length of V-shaped antenna 2 is 0.28um; When the included angle is 135°, the arm length of the V-shaped antenna 3 is 0.24um; each V-shaped antenna includes two connected arms, and an included angle is formed between the two arms.

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Abstract

The invention relates to a demultiplexing device based on the metasurface of a V-shaped optical antenna and a working method of the demultiplexing device. The device comprises a substrate and a plurality of periodically-arranged V-shaped antenna unit groups arranged on the substrate; the plurality of the V-shaped antenna unit groups are arranged in sequence along an X axis and are arranged in parallel along a Y axis; each V-shaped antenna unit group comprises six V-shaped antennas; a phase difference between every two adjacent V-shaped antennas is pi/3; and phase coverage of 0 to 2 pi is achieved. The demultiplexing device can realize different angle deflection for multi-wavelength light of a specific waveband. Based on a generalized Snell law, in a working waveband of 1,450-1,650nm, the arm length and an included angle of the V-shaped antennas are modulated to introduce a phase sudden change gradient at an interface, so that abnormal refraction is achieved. Through the interaction between incident light and a micro-nano antenna array at the interface, linear polarization conversion transmission phase shift in the range of 0-2 pi can be flexibly modulated, and chromatic dispersionat different angles can be performed for light with different wavelengths.

Description

technical field [0001] The invention relates to the technical field of metamaterials and integrated photonic devices, in particular to a demultiplexing device based on a V-shaped optical antenna metasurface and a working method thereof. Background technique [0002] Metamaterials refer to artificial composite structures or composite materials that do not exist in nature and have extraordinary physical properties that natural materials do not have. Generally, they have extraordinary physical properties such as perfect absorption and negative refractive index. [0003] Optical dispersion is a part of great research value in optics, and it plays an important role in optical information processing and other aspects. The modulation of beam wavefront by traditional optical components is achieved through the accumulation of continuous phase delays when the beam passes through the components. The size of optical components is usually large, and the dielectric constant of natural mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/12G02B1/00
CPCG02B1/002G02B6/12007G02B2006/12164
Inventor 李炎刘亚楠李康
Owner SHANDONG UNIV
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