Pore-shaped flat plate TeraHertz wave polarization beam splitter with quadrilateral structure

A polarization beam splitter and quadrilateral technology, applied in the direction of instruments, optical waveguide coupling, light guide, etc., can solve the problems of large size, limited coverage, complex structure, etc., and achieve low cost, simple structure, and high beam splitting rate Effect

CN102902015AInactive Publication Date: 2013-01-30CHINA JILIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-01-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a pore-shaped flat plate TeraHertz wave polarization beam splitter with a quadrilateral structure, and the beam splitter comprises a signal input end, two signal output ends, a pore-shaped hollowed flat plate polarization apparatus and branch-shaped gaps, wherein the pore-shaped hollowed flat plate polarization apparatus consists of upper and lower two rows of large-pore-shaped hollow parts which are adjacently arrayed in a staggered manner and the staggered distances are the same; the pore-shaped hollowed flat plate polarization apparatus is provided with the branch-shaped gaps; the branch-shaped gaps comprise an upper side gap, a left-side parallelogram-shaped gap, a right-side parallelogram-shaped gap, a lower-side transverse gap, a lower-side isosceles-trapezoid-shaped gap, a lower-side parallelogram-shaped gap and a right-lower-side gap; two small-pore-shaped hollow parts are arranged between the lower-side transverse gap and the right-lower-side gap. TeraHertz signals are input from the signal input ends; and a TE (Transverse Electric) wave and a TM (Transverse Magnetic) wave are respectively output from a first signal output end and a second signal output end through the coupling effect between the branch-shaped gaps and the pore-shaped hollowed flat plate polarization apparatus. The pore-shaped flat plate TeraHertz wave polarization beam splitter has the advantages of simple structure, small occupied space, high beam splitting efficiency, easiness for manufacturing, and low cost.
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Description

technical field

[0001] The invention relates to a beam splitter, in particular to a flat plate terahertz wave polarizing beam splitter with a quadrilateral structure. Background technique

[0002] The terahertz spectrum lies between microwave and infrared radiation. In the field of electronics, electromagnetic waves in this frequency band are also called millimeter waves and submillimeter waves; in the field of spectroscopy, it is also called far-infrared radiation. Generally, the so-called terahertz band has a frequency range of 0.1~10THz. Before the mid-1980s, the properties of this band were so poorly understood due to the lack of effective methods for generating and detecting THz radiation that it was called the THz gap in the electromagnetic spectrum. THz wave is between microwave and far-infrared light, it integrates the advantages of microwave communication and optical communication. The advanced ultra-wideband technology is hundreds or even thousands of times fast...

Examples

Embodiment 1

[0017] The hole-shaped hollow plate polarizer has a length of 2600 μm and a width of 1300 μm, and the material is gallium arsenide with a refractive index of 3.25. The hole radius of the large hole-shaped hollow is 20 μm, and the distance between adjacent holes is 60 μm. The space between the hollows is 60 μm. The upper void is formed by removing the large hole-like cutouts of the fourth and fifth rows. The left parallelogram void, the right parallelogram void, and the lower parallelogram void are respectively formed by removing 8×4, 8×7, and 2×5 large hole-shaped hollows, and the left parallelogram void is parallel to the right The large hole-like cutouts for quadrilateral void removal are in the same row. The left side of the lower lateral gap is parallel to the left side of the left parallelogram gap, and the right side is parallel to the right side of the right parallelogram gap. between. The isosceles trapezoidal void on the lower side is formed by removing two rows o...