Modulator apparatus for terahertz wave of photon crystal and its method

A photonic crystal and terahertz technology, applied in the field of terahertz wave application, achieves the effect of compact structure, small loss and wide modulation bandwidth

Inactive Publication Date: 2008-10-08
CHINA JILIANG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At present, the application of BWO is either used for spectrum analysis or imaging detection, but there is no such technology at home and abroad to apply BWO to THz wave communication

Method used

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  • Modulator apparatus for terahertz wave of photon crystal and its method
  • Modulator apparatus for terahertz wave of photon crystal and its method
  • Modulator apparatus for terahertz wave of photon crystal and its method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Terahertz wave modulation at 0.6THz frequency:

[0022] Choose the BWOs sold by Microtech, where the return wave tube model is selected as QS-400ov81 (the frequency is tunable in the 0.6-0.9THz frequency band). The designed silicon photonic crystal period a=133 μm, the silicon photonic crystal refractive index is 3.4, the photonic crystal hole radius r=53.2 μm, the width of the line defect of the silicon photonic crystal is to remove a row of holes (width is 2a), select the nanoscale In the 5CB liquid crystal injection hole, the terahertz wave frequency for terahertz communication is 0.6THz. When the obtained electrodes have no external voltage, the steady-state transmission of terahertz waves in the photonic crystal modulator structure is as follows: Figure 4 (a); When the electrode has an applied voltage (0.71V), the steady-state transmission of the terahertz wave in the structure of the photonic crystal modulator is shown in the attached Figure 4 (b). The extinc...

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Abstract

This invention discloses one photon crystal Hertz wave modulation device and its method, wherein, the device comprises silicon photon crystal with deficiency, electrode, liquid crystal, silica dioxide underlay; the underlay is set with silicon photon crystal on and injects liquid crystal into silicon photon crystal holes with deficiency and sets electrode on both sides of silicon photon crystal with deficiency; The photon crystal Hertz wave modulation method is to use photon edge to modulate Hertz wave signals.

Description

technical field [0001] The invention belongs to the technical field of terahertz wave applications, and in particular relates to a photonic crystal terahertz wave modulator device and a method thereof. Background technique [0002] Terahertz (THz, 1THz=10E+12Hz) radiation usually refers to electromagnetic radiation waves with a frequency range from 0.1THz to 10THz. This band is located at the junction of electronics and optics. It occupies a very special position in the electromagnetic spectrum. , has a series of special properties and important academic and application value. Terahertz communication has the advantages of rich frequency band resources, large bandwidth, good confidentiality, transmission rate can reach 1-10Gb / s, etc., and terahertz communication does not require the approval of radio management department, so terahertz wave has unique advantages in the application of communication field. [0003] At present, the terahertz wave sources used for terahertz wave...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13G02F1/01
Inventor 李九生
Owner CHINA JILIANG UNIV
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