Silicon-hole array structured terahertz wave polarization beam splitter

Abstract

The invention discloses a silicon-hole array structured terahertz wave polarization beam splitter. The splitter comprises a perforated hollow plate, a two-dimensional and circularly arranged circular air hole, a first linear waveguide, a second linear waveguide, a third linear waveguide, a first polyline waveguide, a second polyline waveguide, a first resonant region, a second resonant region, a third resonant region, a fourth resonant region, a TE signal input end, a TM signal input end, a TE signal output end, and a TM signal output end. The terahertz wave inputted from the TE signal input end can be outputted from the TE signal output end only in TE mode, and signal in TM mode cannot be outputted from the TE signal output end or the TM signal output end. The terahertz wave inputted from the TM signal input end can be outputted from the TM signal output end only in TM mode, and signal in TE mode cannot be outputted from the TE signal output end or the TM signal output end. In this way, the polarization beam splitting function is realized. The splitter has a simple structure and achieves high beam splitting efficiency. Small in size and cost-effective to manufacture, the splitter can also be integrated easily.

Description

technical field [0001] The invention relates to a terahertz wave polarization beam splitter, in particular to a terahertz wave polarization beam splitter with a silicon hole array structure. Background technique [0002] In recent years, the terahertz wave between the mature millimeter wave and infrared light on the electromagnetic spectrum is undoubtedly a new research field. The frequency of terahertz wave is 0.1-10THz, and the wavelength is 30μm-3mm. For a long time, due to the lack of effective terahertz wave generation and detection methods, compared with traditional microwave technology and optical technology, people have little understanding of the nature of electromagnetic radiation in this band, so that this band has become the terahertz wave in the electromagnetic spectrum. void. With the breakthrough of terahertz radiation source and detection technology, the unique and superior characteristics of terahertz have been discovered and have shown great application p...

AI Technical Summary

Problems solved by technology

However, most of the existing terahertz wave polarization beam splitters have many shortcomings such as complex structure, low polarization beam splitting efficiency, and high cost. Therefore, research on simple structure, high polarization beam splitting efficiency, low cost, small size, and adjustable performance Terahertz wave polarizing beam splitter is of great significance

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