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Double-stepped terahertz wave polarization beam splitter

A polarizing beam splitter and stepped technology, applied in the field of terahertz beam splitters, can solve the problems of difficult actual production process, complex structure, low beam splitting rate, etc., and achieve compact structure, high beam splitting rate and small size. Effect

Inactive Publication Date: 2014-08-27
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dual-step terahertz wave polarization beam splitter with high beam splitting rate in order to overcome the deficiencies of low beam splitting rate, complex structure and difficult actual manufacturing process in the prior art

Method used

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  • Double-stepped terahertz wave polarization beam splitter

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Embodiment 1

[0016] Double-step terahertz wave polarizing beam splitter:

[0017] The material of the substrate is silicon dioxide, the length is 1270 μm, the width is 1000 μm, and the thickness is 400 μm. The materials of the first stepped waveguide, the second stepped waveguide and the elliptical waveguide are all silicon, and the thickness is 80 μm. The lengths of the first stepped waveguide and the second stepped waveguide are 1270 μm and 920 μm respectively, and the widths are both 300 μm. The distance between two adjacent elliptical waveguides of the elliptical waveguide array is 60 μm; the major axis length of the elliptical waveguide is 160 μm, and the minor axis length is 50 μm. The length of the large rectangular groove is 200 μm and the width is 30 μm; the length of the upper base of the first isosceles trapezoidal groove is 170 μm, the length of the lower base is 190 μm, and the height is 30 μm; the length of the upper base of the second isosceles trapezoidal groove is 140 μm ...

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Abstract

The invention discloses a double-stepped terahertz wave polarization beam splitter. It includes a signal input terminal, a first signal output terminal, a second signal output terminal, a substrate, a first stepped waveguide, a second stepped waveguide, and an elliptical waveguide array; the substrate is provided with a first stepped waveguide, a second stepped waveguide Waveguide, elliptical waveguide array, Hertz wave is input from the signal input end, TE wave is directly output from the first signal output end, and TM wave is output from the second signal output end through the coupling of the elliptical waveguide array to obtain the function of polarization beam splitting. The invention has the advantages of compact structure, small size, high beam splitting ratio, easy manufacture, easy integration, etc., and meets the application requirements in the fields of terahertz wave imaging, terahertz wave communication and the like.

Description

Technical field [0001] The present invention involves the Taehz wave beam, and especially involves a double -terrace -shaped Taehz wave polarizer. Background technique [0002] The electromagnetic wave (frequency is 0.1 ~ 10THz) with the microwave and far -infrared light.Prior to the 1980s, due to the lack of effective Tahhez source and sensitive testing methods, scientific researchers could not understand the nature of the electromagnetic waves of the frequency band.A spectrum range.In the past ten years, the rapid development of ultra -fast laser technology has provided a stable and reliable source of the production of the Taihez pulse. The research on the testing technology and its application of Taihez has also flourished.In modern research, the research of the Tahez system in semiconductor materials, the nature of high -temperature superconducting materials, fault imaging technology, non -marking gene examination, cellular imaging, chemistry and biological examinations, and ...

Claims

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Application Information

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