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A tunable multi-band terahertz pulse wireless communication transmitter

A terahertz pulse and wireless communication technology, applied in the field of tunable multi-band terahertz pulse wireless communication transmitters, can solve the problems of terahertz communication pulse center frequency, uncontrollable pulse repetition frequency pulse width, limited spectrum resources and capacity, etc.

Active Publication Date: 2019-10-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this system can solve the problem of limited spectrum resources and capacity in existing wireless communication systems, the center frequency, pulse repetition frequency and pulse width of terahertz communication pulses are uncontrollable, so it cannot adapt to and meet actual application requirements.

Method used

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  • A tunable multi-band terahertz pulse wireless communication transmitter

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0029] figure 1 It is a structural schematic diagram of the tunable multi-band terahertz pulse wireless communication transmitting device provided by the present invention. Such as figure 1 As shown, the tunable multi-band terahertz pulse wireless communication transmitter includes an optical frequency comb, a programmable optical processor, a modulator, and a single-line carrier photodetector.

[0030] In this embodiment, the optical frequency comb is generated by cascaded electro-optic modulators. The frequency interval of the optical frequency comb generated by the...

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Abstract

The invention discloses a tunable multi-band terahertz pulse wireless communication transmitting device, comprising: an optical frequency comb generating module, for generating an optical frequency comb; a programmable optical processor, connected with the optical frequency comb generating module and used for performing frequency filtering on the generated optical frequency comb to generate multiple paths of output, each of which includes a single wavelength optical local oscillator and a multi-wavelength optical carrier signal; a modulator, disposed on each output optical path to modulate thebaseband signal to the multi-wavelength optical carrier signal; and a photodetector, connected to each modulator and used for acting on the signal output by the modulator to generate a multi-band terahertz pulse, wherein the center frequency of the terahertz pulse is decided by a center wavelength difference of the each path of output single-wavelength local oscillator and the multi-wavelength baseband optical carrier, the period of the terahertz pulse is controlled by a baseband modulation implemented by the modulator, and the width and time interval of the terahertz pulse are controlled bythe number and interval of wavelengths of the multi-wavelength baseband optical carrier.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a tunable multi-band terahertz pulse wireless communication transmitting device based on an optical frequency comb. Background technique [0002] With the development of modern society, the amount of communication data is increasing exponentially. The spectrum resources of the current wireless communication system can no longer meet the needs of ultra-high-speed wireless communication. Terahertz communication has received extensive attention in recent years. The terahertz frequency band usually refers to 0.3-10THz, and the communication bandwidth is much larger than that of the microwave band. The terahertz communication system based on the photoelectric method can achieve a communication rate of several hundred gigabits (Gbps). [0003] Terahertz communication methods mainly include continuous terahertz carrier modulation and terahertz pulse modulation. The con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/516H04B10/50
Inventor 余显斌李伟
Owner ZHEJIANG UNIV
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