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Terahertz wave band wireless transmitting and receiving device and transmitting and receiving method thereof

A technology of wireless transmitting and receiving devices, which is applied in the field of wireless transmitting and receiving devices, and can solve problems such as difficulties

Active Publication Date: 2011-03-16
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the lack of effective THz radiation sources and detectors, it is still difficult to conduct THz wireless communication in the frequency range of 1-10THz

Method used

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  • Terahertz wave band wireless transmitting and receiving device and transmitting and receiving method thereof
  • Terahertz wave band wireless transmitting and receiving device and transmitting and receiving method thereof
  • Terahertz wave band wireless transmitting and receiving device and transmitting and receiving method thereof

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Embodiment Construction

[0041] In a terahertz band wireless transmitting and receiving device disclosed by the present invention, the lasing frequency of the terahertz quantum cascade laser used can be 2-7THz, and the frequency response range of the terahertz quantum well detector can be 2-7THz . In the following, a terahertz quantum cascade laser with an excitation frequency of 4.13THz and a terahertz quantum well detector with a frequency response range of 3.1-4.7THz will be used as a preferred embodiment, and the specific implementation of the present invention will be described in detail. For the components see figure 1 . It includes the transmitting end A, the optical path part B and the receiving end C.

[0042] 1. Composition of transmitter A

[0043]The transmitting end A includes: a first cold head 1, a first heat sink 2 installed in the first cold head 1, a terahertz quantum cascade laser installed on the first heat sink 2, and a first polyethylene window Sheet 3; the first polyethylene...

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Abstract

The invention discloses a terahertz wave band wireless transmitting and receiving device and a transmitting and receiving method thereof. The transmitting and receiving device comprises a transmitting terminal composed of a first cold head, a terahertz quantum-cascade laser and a first polyethylene window plate, an optical path part containing two off-axis parabolic mirrors and air and a receiving terminal composed of a second cold head, a terahertz quantum well detector and a second polyethylene window plate. The invention has the advantage that currently undistributed frequency range of electromagnetic wave is selected to transmit and receive electromagnetic wave, the absorption of the selected frequency point of electromagnetic wave by the air is relatively weaker, thus reducing the attenuation loss of terahertz wave during the transmission process; the semiconductor quantum-cascade laser which has high energy conversion efficiency and small volume, is easy to integrate, and can work for long time and perform mass production is adopted by the transmitting terminal; the semiconductor quantum well detector which has small volume, is stable and reliable and can perform mass production is adopted by the receiving terminal; and the adopted semiconductor laser and detector both can operate at high frequency, thus being suitable for future terahertz communication applications.

Description

technical field [0001] The invention relates to a wireless transmitting and receiving device in the terahertz band, in particular to a wireless transmitting and receiving device based on a terahertz quantum cascade laser and a terahertz quantum well detector and a transmitting and receiving method thereof. Background technique [0002] Terahertz (THz, 1THz=10 12 Hz) band refers to a section of electromagnetic wave region with a frequency between infrared and millimeter waves, which is called "THz gap". In recent years, THz technology and its applications have developed rapidly. As an important radiation source in the THz band, terahertz quantum cascade lasers (THz QCLs) have been extensively and deeply studied, and important progress has been made. It has high energy conversion efficiency, It has the characteristics of small size, easy integration, fast modulation rate and long service life. Terahertz quantum well detectors (THz QWPs) are the extension of quantum well infr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28H04B1/38H04B10/40
Inventor 谭智勇曹俊诚郭旭光黎华韩英军张戎
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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