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Three-triangular structure terahertz wave polarization beam splitter

A polarization beam splitter and terahertz technology, applied in the coupling direction of optical waveguide, can solve the problems of difficult manufacturing process, complex structure, low transmittance, etc., and achieve the effect of simple structure, high beam splitting rate and small size

Inactive Publication Date: 2013-02-13
CHINA JILIANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a terahertz wave polarization beam splitter with three triangular structures with a high beam splitting rate in order to overcome the shortcomings of the prior art such as relatively low transmittance, complex structure, difficult actual manufacturing process, and high cost

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Embodiment 1

[0015] Three terahertz wave polarization beam splitters with triangular structure:

[0016] The length of the first straight waveguide is 280μm, the width is 40μm, and the height is 30μm; the length of the second straight waveguide is 90μm, the width is 40μm, and the height is 30μm; the length of the third straight waveguide is 200μm, the width is 40μm, and the height is 30μm ; The fourth straight waveguide has a length of 300 μm, a width of 40 μm, and a height of 30 μm. The inner diameter of the first arc-shaped waveguide is 270 μm, the outer diameter is 310 μm, and the center angle is 6°; the inner diameter of the second arc-shaped waveguide is 270 μm, the outer diameter is 310 μm, and the center angle is 310°. The inner side length of the first equilateral triangle waveguide is 190 μm, and the outer side length is 220 μm. The length of the inner side of the second equilateral triangle waveguide is 95 μm, and the length of the outer side is 110 μm. The inner side length of th...

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Abstract

The invention discloses a three-triangular structure terahertz wave polarization beam splitter which comprises a signal input end, a first signal output end, a second signal output end, a first straight waveguide, a second straight waveguide, a third straight waveguide, a fourth straight waveguide, a first arc waveguide, a second arc waveguide, a first equilateral triangle waveguide, a second equilateral triangle waveguide and a third equilateral triangle waveguide. Terahertz wave can be input from the terahertz wave input end, transverse magnetic (TM) wave is output from the first signal output end, and the transverse electrical (TE) wave can be output from the second signal output end to obtain the polarization beam splitting function. The three-triangle structure terahertz wave polarization beam splitter has the advantages of being simple in structure, high in beam splitting rate, small is size, low in cost, convenient to manufacture and the like.

Description

technical field [0001] The invention relates to a beam splitter, in particular to a terahertz wave polarization beam splitter with three triangular structures. Background technique [0002] Terahertz waves or terahertz rays were officially named from the mid-to-late 1980s. Before that, scientists collectively referred to them as far-infrared rays. Terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1THz~10THz (wavelength 30μm~3mm), which is between microwave and infrared. In fact, in 1896 and 1897, Rubens and Nichols were involved in this band, and the infrared spectrum reached 9 μm and 20 μm, and then it was recorded that it reached 50 μm. In the next hundred years, far-infrared technology has made many achievements and has been industrialized. However, there are very few research results and data related to the terahertz band, mainly due to the limitation of effective terahertz generation sources and sensitive detectors, so this band is also...

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Application Information

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