3 results about "Transmission function" patented technology

The invention discloses a terahertz magneto-optical polarization converter. The terahertz magneto-optical polarization converter is formed by a rectangular metal hole array and an orthogonal rectangular metal hole array which are attached to the two sides of YIG ferrite, and the terahertz-wave magneto-optical linear polarization state conversion and unidirectional transmission functions at the normal temperature and under a weak bias magnetic field are achieved. Through the F-P resonance and mode selecting effect formed between the two rectangular metal hole arrays, original weak faraday rotation effect of the YIG ferrite is enhanced, and the linear-polarization-state conversion rate of the device is increased. The working frequency of the device ranges from 0.1 THz to 1.5 THz, the highesttransmittance and the polarization conversion rate are larger than 70%, a Q value is larger than 200, and the polarization extinction ratio is larger than 60 dB. Through the high Q value and comb-shaped frequency spectrum output of the device, filtering, wavelength division multiplexing, signal processing and the like of the device in terahertz wideband communication have the application value. Meanwhile, the functions of the high transmittance, linear polarization selection, high-polarization-degree linear polarization state conversion and unidirectional transmission of the device are achieved, and a guarantee is provided for detection signal-to-noise ratio improvement and crosstalk reduction.