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Terahertz wave polarization beam splitter connected in series with three semi-arc structures

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

Inactive Publication Date: 2013-01-30
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the deficiencies of relatively low transmittance, complicated structure, difficult actual manufacturing process and high cost in the prior art, the present invention provides a terahertz wave polarizing beam splitter with high beam splitting rate and three semicircular arc structures connected in series

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  • Terahertz wave polarization beam splitter connected in series with three semi-arc structures
  • Terahertz wave polarization beam splitter connected in series with three semi-arc structures
  • Terahertz wave polarization beam splitter connected in series with three semi-arc structures

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Embodiment 1

[0017] Terahertz wave polarizing beam splitters connected in series with three semi-circular structures:

[0018] The length of the first straight waveguide is 350 μm, the width is 300 μm, and the height is 250 μm; the length of the second straight waveguide is 500 μm, the width is 300 μm, and the height is 250 μm; the length of the third straight waveguide is 500 μm, the width is 300 μm, and the height is 250 μm ; The length of the fourth straight waveguide is 500 μm, the width is 300 μm, and the height is 250 μm. The length d of the first cladding layer was 450 μm, and the length L of the second cladding layer was 200 μm. Radii of the first semicircular waveguide structure, the second semicircular waveguide structure, and the third semicircular waveguide structure are all r, and r is 300 μm. Materials of the first cladding layer and the second cladding layer are birefringent materials. Materials of the first straight waveguide, the second straight waveguide, the third stra...

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Abstract

The invention discloses a terahertz wave polarization beam splitter connected in series with three semi-arc structures. The terahertz wave polarization beam splitter 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 semicircular waveguide structure, a second semicircular waveguide structure, a third semicircular waveguide structure, a first cladding layer and a second cladding layer, wherein the first cladding layer is uniformly and symmetrically coated at the periphery of the second straight waveguide; the second cladding layer is uniformly and symmetrically coated at the periphery of the third straight waveguide; and a signal is input from the signal input end, TE waves are output from the first signal output end and TM waves are output from the second signal output end through the asymmetric coupling functions of the first cladding layer and the second cladding layer, and polarization beam-splitting performance is obtained. The terahertz wave polarization beam splitter is simple in structure, high in beam-splitting rate, small in size, low in cost and easy to manufacture.

Description

technical field [0001] The invention relates to a beam splitter, in particular to a terahertz wave polarization beam splitter with three semicircular arc structures connected in series. Background technique [0002] Terahertz radiation is a general term for electromagnetic radiation of a specific band, which is located between microwave and infrared radiation in the electromagnetic spectrum. In the field of electronics, electromagnetic waves of this frequency band are also called millimeter waves and submillimeter waves; and In the field of spectroscopy, it is also known as far infrared rays. Terahertz waves are electromagnetic waves with a frequency of 0.1-10 THz or a wavelength of 30 μm to 3 mm. Due to the lack of high-efficiency emission sources and sensitive detectors in the terahertz band, electromagnetic radiation in this band has not been studied in depth. Microwave and infrared radiation on both sides of the terahertz wave have already been widely used in communicat...

Claims

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Application Information

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IPC IPC(8): G02B6/125G02B6/27
Inventor 李九生
Owner CHINA JILIANG UNIV
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