Terahertz wave polarizing beam splitter with silicon hole array structure

A polarization beam splitter and array structure technology, applied in the direction of instruments, light guides, optics, etc., can solve the problems of high cost, complex structure, and low polarization beam splitting efficiency, and achieve small size, small volume, and high polarization beam splitting efficiency Effect

Active Publication Date: 2019-02-12
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the existing terahertz wave polarization beam splitters have many shortcomings such as complex structure, low polarization beam splitting efficiency, and high cost. Therefore, research on simple structure, high polarization beam splitting efficiency, low cost, small size, and adjustable performance Terahertz wave polarizing beam splitter is of great significance

Method used

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  • Terahertz wave polarizing beam splitter with silicon hole array structure
  • Terahertz wave polarizing beam splitter with silicon hole array structure
  • Terahertz wave polarizing beam splitter with silicon hole array structure

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Embodiment 1

[0016] In this embodiment, the structure of the terahertz wave polarizing beam splitter is also as described above ( figure 1 and 2 ), the specific structure will not be repeated here. The specific structural parameters of the terahertz wave polarizing beam splitter are: the material of the hollow plate is silicon, and the refractive index is 3.45. The radius of the circular air holes is 39-41 μm, and the distance between the centers of adjacent circular air holes is 119-121 μm. The long axis of the elliptical air hole is 99-102 μm, the short axis is 39-41 μm, and the distance between the centers of adjacent elliptical air holes is 119-121 μm. The side length of the square air holes is 83-85 μm, and the distance between the centers of adjacent square air holes is 119-121 μm. image 3 It is the output power curve of the TE signal output terminal in the range of 0.85THz~1THz. It can be seen that only the TE mode terahertz wave input from the TE signal input terminal can be ou...

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Abstract

The invention discloses a terahertz wave polarization beam splitter with a silicon hole array structure. It includes a hole-shaped hollow plate, circular air holes arranged periodically in two dimensions, the first linear waveguide, the second linear waveguide, the third linear waveguide, the first zigzag waveguide, the second zigzag waveguide, the first resonance area, the second The resonance area, the third resonance area, the fourth resonance area, the TE signal input end, the TM signal input end, the TE signal output end, the TM signal output end, and the terahertz wave input by the TE signal input end can only be obtained from the TE signal by the TE mode. Output terminal output, TM mode cannot be output from TE signal output terminal or TM signal output terminal, the terahertz wave input from TM signal input terminal can only be output from TM signal output terminal, TE mode cannot be output from TE signal output terminal or TM signal input terminal The signal output port is output to obtain polarization beam splitting performance. The invention has the advantages of simple structure, high beam splitting rate, small size, low cost, easy integration and the like.

Description

technical field [0001] The invention relates to a terahertz wave polarization beam splitter, in particular to a terahertz wave polarization beam splitter with a silicon hole array structure. Background technique [0002] In recent years, the terahertz wave between the mature millimeter wave and infrared light on the electromagnetic spectrum is undoubtedly a new research field. The frequency of terahertz wave is 0.1-10THz, and the wavelength is 30μm-3mm. For a long time, due to the lack of effective terahertz wave generation and detection methods, compared with traditional microwave technology and optical technology, people have little understanding of the nature of electromagnetic radiation in this band, so that this band has become the terahertz wave in the electromagnetic spectrum. void. With the breakthrough of terahertz radiation source and detection technology, the unique and superior characteristics of terahertz have been discovered and have shown great application p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/126
CPCG02B6/126
Inventor 章乐李九生
Owner CHINA JILIANG UNIV
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