A multi-channel terahertz wave modulation method and system

Abstract

The invention relates to a multi-channel terahertz wave modulation method. Incident terahertz waves pass through a terahertz wave collimator to become a collimated wave beam, the collimated wave beam sequentially enters multiple overlapped independent modulation channel modules to be independently modulated, each independent modulation channel module outputs an independent modulation signal, then all the output independent modulation signals are sequentially combined through terahertz wave channel combiners in the modulation channel modules and output uniformly from a system output opening, and clutter absorption devices are arranged in the independent modulation channel modules with the terahertz wave channel combiners. A system is composed of multiple terahertz wave modulator module units of different types in a free combination mode, and the purpose of increasing or decreasing the number of channels of modulation terahertz waves is quite easy and convenient to achieve; the function of performing selective modulation on specific channels (wave bands) is achieved, wave absorbers are used, in this way, disturbance of clutters or terahertz waves of non-attention wave bands is further reduced, and then the signal-to-noise ratio is further optimized.

Description

Technical field [0001] The invention relates to a terahertz wave communication technology, in particular to a multi-channel terahertz wave modulation method and system. Background technique [0002] Terahertz wave is an electromagnetic wave frequency band between infrared and microwave. Usually 0.1THz~10THz is defined as "THz Gap", that is, terahertz band. Electromagnetic waves in this band have both the directivity of visible light and the penetration of microwaves. This band has the characteristics of rich information carrying, high temporal and spatial coherence, low photon energy, etc., and has great application value in scientific fields such as astronomy, biology, computers, and communications. With a deep understanding of terahertz waves and terahertz technology, terahertz technology has played a pivotal role in the fields of biomedicine, safety monitoring, non-invasive detection, spectroscopy and imaging technology, and military radar. With the further development of te...

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Problems solved by technology

[0004] The present invention aims at the problem that the existing electronically controlled terahertz wave modulator can only modulate one or multiple frequency bands in linkage and cannot independently modulate multiple frequency bands respectively, and proposes a channel terahertz wave modulation method and system, aiming at To meet the needs of the communication field, combined with the two technologies of spatial modulation and integrated chip modulation, a terahertz wave modulation system with multi-band independent modulation capabilities has been skillfully realized

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