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Terahertz wave polarization beam splitter with double regular hexagon structures

A technology of regular hexagonal structure and polarization beam splitter, applied in the coupling direction of optical waveguide, can solve the problems of complex structure, bulky, expensive, etc., and achieve the effect of small size, high beam splitting rate, simple and compact structure

Inactive Publication Date: 2014-04-16
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, polarization beam splitters in the terahertz band are still very limited. Existing terahertz wave polarization beam splitters are often complex in structure, bulky, difficult to manufacture, and expensive. Therefore, it is necessary to design a simple, compact, small-volume terahertz polarization beam splitter with light weight and high beam splitting efficiency to meet the needs of future terahertz wave technology applications

Method used

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  • Terahertz wave polarization beam splitter with double regular hexagon structures
  • Terahertz wave polarization beam splitter with double regular hexagon structures
  • Terahertz wave polarization beam splitter with double regular hexagon structures

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Embodiment 1

[0016] The first hole-shaped hollow array of the terahertz wave polarization beam splitter with double regular hexagon structure is composed of 3×32 large hole-shaped hollows, the second hole-shaped hollow array has 10 rows, and the third hole-shaped hollow array consists of 1× It is composed of 19 large hole-shaped hollows, and the fourth hole-shaped hollow array is composed of 4×32 large-hole hollows. The distance between adjacent large hole-shaped hollows and adjacent small hole-shaped hollows is 240 μm. The large hole-shaped hollowing radius is 80 μm, and the small hole-shaped hollowing radius is 40 μm. All the adjacent two rows of the hole-shaped hollow array on the flat polarizer are staggered, and the staggered distance is 120 μm. The material of the flat polarizer is gallium arsenide, and the refractive index is 3.25. The transmission curve of TM wave and TE wave output from the first output end of the terahertz wave polarization beam splitter with double regular hexa...

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Abstract

The invention discloses a terahertz wave polarization beam splitter with double regular hexagon structures. The terahertz wave polarization beam splitter comprises a terahertz wave input end, a first output end, a second output end and a flat polarizer, wherein the upper part of the flat polarizer is provided with a first porous hollow array, the middle of the flat polarizer is provided with a second porous hollow array, and the lower part of the flat polarizer is provided with a third porous hollow array and a fourth porous hollow array; the terahertz wave input end is arranged on the left side between the first porous hollow array and the second porous hollow array; the first output end is arranged on the right side between the first porous hollow array and the second porous hollow array; and the second output end is arranged on the right side between the second porous hollow array and the fourth porous hollow array. The terahertz wave polarization beam splitter has the advantages of simple and compact structure, small dimension, small size, light weight, high beam-splitting rate and the like, and the application requirements in the fields of terahertz wave medical imaging, environmental monitoring, terahertz wave communication and the like are met.

Description

technical field [0001] The invention relates to a beam splitter, in particular to a terahertz wave polarizing beam splitter with double regular hexagonal structure. Background technique [0002] The terahertz frequency domain refers to the electromagnetic wave band between the high-frequency end of microwave and the low-frequency end of far-infrared light with a frequency between 0.1THz and 10THz. It is in the field of transition from electronics to photonics, and integrates the advantages of microwave communication and optical communication: First, terahertz wave communication can obtain much larger bandwidth than microwave communication, which can effectively solve the increasingly severe problem of frequency band resource shortage. In addition, terahertz waves have good penetrability. It can penetrate smoke, walls, carbon plates, cloth, ceramics and other substances with very small attenuation, which solves the limitations of optical communication in harsh environments su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/27
Inventor 李九生
Owner CHINA JILIANG UNIV
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