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Atmospheric Communication System Using Supercontinuum Carrier Source

A supercontinuum, atmospheric communication technology, applied in free space transmission, electromagnetic transmitters, etc., can solve problems such as light intensity flicker, and achieve the effects of stable quality, low light intensity flicker factor, and simple structure

Active Publication Date: 2019-10-15
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

[0004] The present invention aims at problems such as flickering of light intensity in the atmospheric turbulent channel of the existing narrow-band coherent optical communication system, and proposes an atmospheric communication system using a supercontinuum carrier source

Method used

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  • Atmospheric Communication System Using Supercontinuum Carrier Source
  • Atmospheric Communication System Using Supercontinuum Carrier Source

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the atmospheric communication system using a supercontinuum carrier source includes an adjustable light source 1, an arbitrary waveform generator 2, a first Mach-Zehnder modulator 3, a first optical coupler 4, an erbium-doped fiber amplifier 5, and a first optoelectronic A detector 6 , an isolator 7 , a nonlinear optical fiber 8 , a second optical coupler 9 , a second Mach-Zehnder modulator 10 , a collimator mirror group 11 , a second photodetector 12 and a low-pass filter 13 .

[0020] The collimating mirror group 11 is coaxially arranged with the first collimating mirror 11-1 and the second collimating mirror 11-2.

[0021] The adjustable light source 1 is connected to the optical input end of the first Mach-Zehnder modulator 3 through an optical fiber, and the first radio frequency electrical signal sent by the arbitrary ...

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Abstract

The invention provides an ultra-continuous spectrum carrier source-based atmospheric communication system and belongs to the technical field of optical communication. In order to solve the problems inthe prior art, an adjustable light source and a first mach-zehnder modulator are connected. A first radio-frequency electrical signal sent by an arbitrary waveform generator is connected with the radio-frequency end of the first mach-zehnder modulator. A second radio-frequency electrical signal sent by the arbitrary waveform generator is connected with the radio-frequency end of a second mach-zehnder modulator. The first mach-zehnder modulator is connected with the common port of a first optical coupler. The second port B of the first optical coupler is connected with a first photoelectric detector. The first port A of the first optical coupler is connected with an erbium-doped fiber amplifier. The erbium-doped fiber amplifier is connected with an isolator. The isolator is connected witha nonlinear optical fiber. The nonlinear optical fiber is connected with the common input end of a second optical coupler. The first port C of the second optical coupler is connected with the second mach-zehnder modulator. The second mach-zehnder modulator, a collimating lens set, a second photoelectric detector and a low-pass filter are sequentially connected.

Description

technical field [0001] The invention relates to an atmospheric communication system using a supercontinuum carrier source, belonging to the technical field of optical communication. Background technique [0002] With the increase of communication demands, modern optical communication systems are developing towards diversity. Compared with the traditional optical fiber communication and microwave communication system, the free space optical communication system has the advantages of reducing the cost of the communication system, requiring no resource license, wide spectrum and large transmission capacity. As a supplementary solution to the wireless communication network, it can solve the "last mile" Therefore, it has an important application in mountainous areas, emergency rescue and other emergency situations where it is inconvenient to deploy optical cables or the optical cables are damaged. At the same time, in theory, the transmission of partially coherent light beams in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/11H04B10/54
Inventor 王天枢张欣梦陈俊达林鹏刘显著马万卓贾青松张鹏姚海峰
Owner CHANGCHUN UNIV OF SCI & TECH
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