Terahertz wave polarization beam splitter with multiple banded structures

Abstract

The invention discloses a terahertz wave polarization beam splitter with multiple banded structures. The terahertz wave polarization beam splitter comprises a terahertz wave input end, a first signal output end, a second signal output end, a matrix, an L-shaped waveguide, a first straight waveguide, a second straight waveguide, a third straight waveguide, a fourth straight waveguide, a fifth straight waveguide, a sixth straight waveguide and coating layers; the L-shaped waveguide, the first straight waveguide, the second straight waveguide, the third straight waveguide, the fourth straight waveguide, the fifth straight waveguide and the sixth straight waveguide are arranged on the matrix, the surface of the matrix and surfaces of the waveguides are covered by the coating layers, and the second straight waveguide, the third straight waveguide, the fourth straight waveguide, the fifth straight waveguide and the sixth straight waveguide are equidistantly arranged between the L-shaped waveguide and the first straight waveguide; and terahertz wave signals are inputted from the terahertz wave input end, TE (transverse electric) waves are outputted from the first signal output end, TM (transverse magnetic) waves are outputted from the second signal output end, and accordingly a polarization beam splitting function is realized. The terahertz wave polarization beam splitter has the advantages of simple and compact structure, small size, convenience in manufacture, low loss, high splitting rate, easiness in integration and the like.

Description

technical field [0001] The present invention relates to a terahertz wave polarization beam splitter, in particular to a multi-strip structure terahertz wave polarization beam splitter. Background technique [0002] Terahertz (Terahertz, THz, 1THz=10 12 Hz) waves generally refer to electromagnetic waves located between microwaves and infrared rays on the electromagnetic spectrum, with frequencies in the range of 0.1 to 10 THz. For a long time, due to the lack of effective means to generate and detect THz waves, the characteristics of this segment of electromagnetic waves have been poorly understood, so that this band has been called the THz gap (THz Gap) on the electromagnetic spectrum. After the 1990s, with the development of femtosecond ultrafast laser technology, a stable and reliable excitation light source was provided for the generation of terahertz pulses, which made great progress in theoretical research and application technology in the terahertz band. Terahertz wa...

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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 simple structure and low loss in order to overcome the disadvantages of complex structure, difficult actual manufacture, high cost and difficult integration in the prior art

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