Silica nanoparticle brick array polarizing beam splitter

A polarizing beam splitter and silicon nano-brick technology, which is applied in the direction of polarizing components, can solve the problems that cannot meet the development trend of photonic devices, is not suitable for optical integration, and is expensive, and achieves light weight, compact structure, and mature and simple manufacturing process. Effect

Active Publication Date: 2015-07-15
CHINA INFORMATION COMM TECH GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, traditional polarization splitting devices are expensive, complex in process, large in size and heavy i

Method used

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  • Silica nanoparticle brick array polarizing beam splitter
  • Silica nanoparticle brick array polarizing beam splitter
  • Silica nanoparticle brick array polarizing beam splitter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1-2 As shown, a silicon nanobrick array polarizing beam splitter includes a transparent substrate and an array of silicon nanobricks uniformly distributed on the transparent substrate, the silicon nanobricks are cuboids, and the arrangement direction of the nanobricks is the same; When incident, light with polarization directions along the long and short sides of the nanobricks is reflected and transmitted, respectively.

[0033] The working wavelength range of the silicon nano-brick array polarization beam splitter is 1460nm-1625nm.

[0034] The substrate material is quartz glass, and the silicon nano-brick material is silicon film.

[0035] The length, width and height of the silicon nano bricks are both sub-wavelength.

[0036] The silicon nano brick has a length of 400nm, a height of 500nm and a width of 180-245nm.

[0037] The preparation method of the silicon nano-brick array polarizing beam splitter is a projection photolithography method or an...

Embodiment 2

[0040] This embodiment selects the dominant wavelength λ in the communication band 0 =1547.5nm, the specific structural parameters of the silicon nanobrick polarizing beam splitter are: nanobrick periodic size C=690nm, nanobrick long axis dimension L=400nm, nanobrick short axis dimension W=220nm, nanobrick height H=500nm. After the xyz coordinate system is established on the nanobrick layer, its long axis is along the x direction, its short axis is along the y direction, and the incident direction is the z direction. When light waves containing multiple polarization states are incident on the silicon nanobrick polarizing beam splitter, the linearly polarized light polarized along the y direction passes through the polarizing beam splitter, while the linearly polarized light polarized along the x direction is reflected, thereby achieving polarization Spectral effect.

[0041] According to the parameters in this embodiment, the polarization splitting effect of the silicon nanob...

Embodiment 3

[0043] This embodiment selects the dominant wavelength λ in the communication band 0 =1460nm, the specific structural parameters of the silicon nanobrick polarizing beam splitter are: nanobrick period size C=690nm, nanobrick long axis dimension L=400nm, nanobrick short axis dimension W=180nm, nanobrick height H=500nm. After the xyz coordinate system is established on the nanobrick layer, its long axis is along the x direction, its short axis is along the y direction, and the incident direction is the z direction. When light waves containing multiple polarization states are incident on the silicon nanobrick polarizing beam splitter, the linearly polarized light polarized along the y direction passes through the polarizing beam splitter, while the linearly polarized light polarized along the x direction is reflected, thereby achieving polarization Spectral effect.

[0044] The silicon nanobrick polarization beam splitter designed according to the parameters in this embodiment h...

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Abstract

The invention discloses a silica nanoparticle brick array polarizing beam splitter, and belongs to the field of micro-nano optics and polarizing optics. The silica nanoparticle brick array polarizing beam splitter comprises a transparent substrate and silica nanoparticle brick arrays evenly distributed on the transparent substrate. Silica nanoparticle bricks are cuboid. The arrangement directions of the silica nanoparticle bricks are the same. When incident light perpendicularly enters the silica nanoparticle brick array polarizing beam splitter, light in the polarization direction along long edges and short edges of the silica nanoparticle bricks is reflected and transmitted. The silica nanoparticle brick array polarizing beam splitter can enable one kind of linearly polarized light to be fully transmitted and the other kind of linearly polarized light to be fully reflected, wherein the two kinds of linearly polarized light are perpendicular to each other in the polarization direction. Accordingly, light in the two polarization states is completely separated, and meanwhile the direction of an optical axis is not changed. The silica nanoparticle brick array polarizing beam splitter can adopt a manufacturing method of a binary optical device, is easily copied and produced on a large scale, and has the advantages of being good in beam splitting effect, small in size, low in weight, compact in structure, easy to integrate and capable of conforming to the development trend of the optical element.

Description

technical field [0001] The invention relates to the fields of micro-nano optics and polarization optics, in particular to a silicon nano-brick array polarization beam splitter. Background technique [0002] The control of the polarization state is very important in many optical systems, especially in engineering optics, researchers often need to obtain, test and measure the polarization characteristics of light, change the polarization state, and use the polarization characteristics to perform some physical quantities Measurements, etc., and devices that can generate and examine the polarization state of light are essential in these studies. Among them, the polarization beam splitter is one of the most important polarizing devices. It can separate the light waves of two polarization states whose polarization directions are perpendicular to each other. Key devices in information processing and many other applications. [0003] Traditional polarization splitting devices are ...

Claims

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Application Information

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IPC IPC(8): G02B5/30
CPCG02B5/30
Inventor 李子乐郑国兴何平安李松田昕周辉赵江南高俊玲杨晋陵张霜
Owner CHINA INFORMATION COMM TECH GRP CORP
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