Novel atmospheric laser communication device

An atmospheric laser communication and laser technology, which is applied in the direction of electrical components, electromagnetic wave transmission systems, electromagnetic transmitters, etc., can solve the problems of poor transmission directionality, limited communication capacity, and inability to meet communication needs, so as to prevent information leakage and ensure reliable The effect of signal decoding

Active Publication Date: 2021-03-30
XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with optical fiber communication, atmospheric laser communication does not require optical fiber laying and maintenance; compared with microwave communication, it does not require the approval of a frequency use license and is free from radio interference. The existing microwave communication technology faces insufficient microwave frequency band resources, limited communication capacity, and transmission Poor directionality, etc., can no longer meet the growing communication needs

Method used

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  • Novel atmospheric laser communication device
  • Novel atmospheric laser communication device
  • Novel atmospheric laser communication device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1 is based on a method of using a new atmospheric laser communication device.

[0051] like figure 1 As shown, 1 represents a semiconductor laser, 2 represents a wavelength division multiplexer, 3 represents the first gain fiber, 4 represents a nonlinear device, 5 represents a fiber splitter, 6 represents the second gain fiber, and 7 represents the first collimator , 8 denotes the second collimator, 9 denotes the first mirror, 10 denotes the second mirror, 11 denotes the third mirror, 12 denotes the fourth mirror, 13 denotes the spatial light modulator, 14 denotes the signal encoder, 15 denotes a stepping motor, 16 denotes a filter, 17 denotes a charge-coupled device image sensor, and 18 denotes a signal decoder.

[0052] Semiconductor laser 1, wavelength band 980nm, maximum output laser power 30w adjustable, semiconductor laser;

[0053] WDM 2, 980 nm / 1550 nm WDM, HI1060 optical fiber, no connector;

[0054] The first gain fiber 3, erbium-doped fiber, 1...

Embodiment 2

[0079] Embodiment 2 is based on a method of using a new type of atmospheric laser communication equipment that uses a 1620nm laser as a carrier.

[0080] In one embodiment, the above-mentioned new atmospheric laser communication equipment is used to communicate information, and the spatial light modulation method is used to send "Hello World", and the signal is received at the receiving end to realize decoding and receive "Hello Word". communication system such as figure 1 shown. figure 1 Among them, 1 represents the light source, 2 represents the wavelength division multiplexer, 3 represents the first gain fiber, 4 represents the nonlinear device, 5 represents the fiber splitter, 6 represents the second gain fiber, 7 represents the first collimator, 8 Indicates the second collimator, 9 the first reflector, 10 the second reflector, 11 the third reflector, 12 the fourth reflector, 13 the spatial light modulator, 14 the signal encoder, 15 A stepper motor, 16 represents a filte...

Embodiment 3

[0112] Use the above-mentioned new atmospheric laser communication equipment for information communication, use the spatial light modulation method to send "Hello World", and receive the signal at the receiving end, realize decoding, and receive "Hello Word".

[0113] The details of related devices are as follows:

[0114] Semiconductor laser 1, which produces a light source with a wavelength of 980nm, and the maximum output laser power is 30w adjustable;

[0115] WDM 2, 980 nm / 1550 nm WDM, HI1060 optical fiber, no connector;

[0116] The first gain fiber 3, erbium-doped fiber, 1m;

[0117] Nonlinear fiber optic device 4, fiber optic microspheres, 400 microns in diameter;

[0118] Optical fiber splitter 5, 50:50 optical fiber splitter, working wavelength 1620;

[0119] The second gain fiber 6, thulium-doped fiber, 50cm;

[0120]The first collimator 7, the working wavelength is 1050~1700nm;

[0121] The second collimator 8, the working wavelength is 1050~1700nm;

[0122...

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Abstract

The invention discloses a novel atmospheric laser communication device. The novel atmospheric laser communication device comprises a signal encoder, a laser generation module, a carrier selection module, a signal modulation module, a signal receiving module and a signal decoder. The signal encoder converts the to-be-sent information into an electric signal and sends the electric signal to the signal modulation module; the laser generation module outputs two paths of lasers with different wavelengths in the wave band of 1600 nanometers to 1700 nanometers as carrier signals; the carrier selection module selects laser with one wavelength and sends the laser to the signal modulation module to perform spatial mode modulation on the laser, and the modulated laser is sent to the signal receivingmodule through the atmosphere; and the signal receiving module receives the optical signal and converts the optical signal into an electric signal, and the signal decoder decodes the electric signal by using a neural network to complete atmospheric laser communication. The invention not only comprises intensity modulation, but also modulates a laser space mode, parallel transmission of multi-dimensional information is achieved, and a new solution is provided for improving the communication rate of atmospheric laser communication.

Description

technical field [0001] The invention belongs to the technical field of atmospheric laser communication, in particular to a novel atmospheric laser communication device and a communication method thereof. Background technique [0002] The principle of laser communication is similar to ordinary radio communication. The difference is that radio communication modulates sound, image or other signals onto a radio carrier and transmits them, while laser communication modulates sound, images or other information onto a laser carrier and transmits them. Laser communication can be divided into ground-atmospheric communication, space communication and optical fiber communication. [0003] Compared with traditional communication methods, laser communication has the outstanding advantages of strong confidentiality and strong anti-interference ability. Compared with optical fiber communication, atmospheric laser communication does not require optical fiber laying and maintenance; compar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/11H04B10/50H04B10/516
CPCH04B10/11H04B10/506H04B10/503H04B10/516
Inventor 周伟鲜安华柳阳雨曹雪王敬如康健陈浩
Owner XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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