CN105553549A - Reverse middle-infrared band cluster laser communication system based on quantum cascade laser - Google Patents
Reverse middle-infrared band cluster laser communication system based on quantum cascade laser Download PDFInfo
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- CN105553549A CN105553549A CN201510971133.8A CN201510971133A CN105553549A CN 105553549 A CN105553549 A CN 105553549A CN 201510971133 A CN201510971133 A CN 201510971133A CN 105553549 A CN105553549 A CN 105553549A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
Abstract
The invention discloses a reverse middle-infrared band cluster laser communication system based on a quantum cascade laser. A laser communication mode is adopted, and a cat eye optical system is patricianly adopted to a passive end to improve the communication speed and the communication efficiency and perfect the information security and confidentiality in an information collection process; in view of the characteristics of a collection system, a reverse communication mode is adopted to reduce the power consumption of a sensor; a middle-infrared band based on the quantum cascade laser is used for carrying out the laser communication to reduce the influence of bad atmosphere to the laser communication; and the system has a wide application prospect, can be widely applied to cluster communication fields requiring information collection and summarization, and the system has the advantages of high confidentiality, high communication speed, anti-atmospheric interference, low power consumption requirements on the sensor and other sub-machines, etc.
Description
Technical field
The present invention relates to precise light electronic product, particularly relate to the reverse middle-infrared band cluster laser communication system based on quantum cascade laser.
Background technology
Along with modern information technologies development, to area-of-interest, the acquisition of information of interest becomes a prior development direction of modern information technologies, distributed sensor technology is a kind of important means solving area information acquisition, be widely used in the fields such as supervision of the cities, marine information acquisition, security protection security, space science experiment, and along with the extension of mankind's interest, to continuous expansive approach in direction such as intellectual material, Geophysical Monitoring, atmosphere environment supervisions, and the information between transducer and communication node is the key technology of distributed sensor technology.
Traditional information acquisition system utilizes Wireless microwave mode, closely gathers the sensor information in region, realizes the information transmission between transducer and host node.Because radiation scope is wide, make the confidentiality of information and fail safe low; Transducer needs to carry out energy transmitting to gatherer simultaneously, and the biosensor power consumption being is large; And when more for transducer obtaining information, because microwave means speed is low, need the more transmission time, reduce the efficiency of collection information.
Summary of the invention
The problem that confidentiality for conventional information acquisition system is low, power consumption is large, speed is low, the present invention proposes a kind of reverse middle-infrared band cluster laser communication system based on quantum cascade laser, improve traffic rate and communication efficiency, improve the Information Security in infonnation collection process and confidentiality.
Based on the reverse middle-infrared band cluster laser communication system of quantum cascade laser, comprise drive end and Partner; Described drive end comprises generating laser, active controller, servo turntable, laser receiving antenna, photoelectric sensor and signal demodulation unit;
Described Partner comprises opal optical antenna array, photodetector, demodulator of PM signal PM, Passive Control device, modulating driver and reverse modulator;
Described active controller is for controlling described servo turntable, simultaneously, start working or out-of-work control command for receiving the communication information that needs to send to Partner and controlling Partner, and by the described communication information and described control command time-sharing send to generating laser;
Described generating laser is arranged on described servo turntable, for receiving the described communication information of described active controller transmission or described control command, launches after the described communication information of current reception or described control command are modulated to laser signal;
The laser beam of laser transmitter projects, according to the control of controller, is pointed to Partner by described servo turntable;
Described laser receiving antenna is arranged on servo turntable, and servo turntable drives laser receiving antenna to point to Partner, receives the laser signal from Partner reflection;
Described photoelectric sensor is used for receiving described laser signal from described laser receiving antenna, and is changed into the signal of telecommunication, is transferred to signal demodulation unit; The described signal demodulation unit demodulation signal of telecommunication, realizes the acquisition of the Partner communication information;
After the laser signal that described opal optical antenna array received drive end is launched, be divided into two parts, photodetector described in a part of focusing illumination, the reverse modulator of a part of focusing illumination in addition;
The laser signal of reception is converted to the signal of telecommunication by described photodetector, and is transferred to demodulator of PM signal PM;
Described demodulator of PM signal PM resolve described photodetector send the signal of telecommunication, if receive be drive end send signal of communication, stored; If what receive is control command, be transferred to Passive Control device;
Described Passive Control device is to described modulating driver sending controling instruction;
Described modulating driver, according to control command, starts or quits work; After starting working, receive the communication information needing to send to drive end from Partner, and this communication information is encoded, finally coded data is sent to reverse modulator;
Described reverse modulator is according to coded data, to the unlatching of opal optical antenna array, close frequency and control, thus, make opal optical antenna array that the laser of reception is reflected back drive end with described unlatching, closedown frequency according to the mode of stroboscopic, realize the reverse communication of Partner.
Preferably, a corresponding multiple Partner of described drive end, quantity is determined according to communication requirement.
Preferably, described drive end is positioned over the network node place of distributed sensor system, for obtaining the information of transducer; Partner is placed on sensor side, for sending the information that transducer obtains.
Preferably, described generating laser adopts quantum cascade laser.
Preferably, after the laser signal that described opal optical antenna array received drive end is launched, by photodetector described in the light beam focusing illumination of 1% ~ 2%.
The present invention has following beneficial effect:
(1) the present invention adopts laser communication mode, particularly have employed opal optical system at Partner, improves traffic rate and communication efficiency, improves the Information Security in infonnation collection process and confidentiality;
For gathering system feature, adopt reverse communication mode, reduce biosensor power consumption;
Adopt and carry out laser communication based on the middle-infrared band of middle INFRARED QUANTUM CASCADE LASERS, reduce the impact of bad air on laser communication.
This system is with a wide range of applications, and can be widely used in and need information, the trunking communication field of gathering, have that highly dense property is high, traffic rate is high, anti-atmospheric interference, to advantages such as sensor handset power consumption requirements are low.
Accompanying drawing explanation
Fig. 1 is the theory diagram of reverse communication system of the present invention.
Fig. 2 is reverse modulator structure schematic diagram of the present invention.
Embodiment
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
As shown in Figure 1, reverse middle-infrared band cluster laser communication system based on quantum cascade laser of the present invention is made up of drive end and Partner two parts, and wherein drive end is positioned over the network node place of distributed sensor system for obtaining the information of transducer; Partner is placed on sensor side, for sending the information that transducer obtains.
Drive end aims at Partner by control system, Emission Lasers bundle also irradiates Partner, when Partner detects incident beam, information signal is converted into modulator driving signal change, by modulator by signal loading to incident beam, by reverse modulator, former for modulated beam of light road is turned back to drive end, drive end communication sink obtain modulated beam of light, finally processed signal by signal processing system, the information that realizes is by the transmission of Partner to drive end.
Drive end based on the reverse middle-infrared band cluster laser communication system of quantum cascade laser is made up of generating laser (comprise laser power device, Laser Driven and modulator, laser transmitting antenna form), laser receiving antenna, photoelectric sensor, demodulates information unit, active controller and servo turntable.Generating laser adopts quantum cascade laser.
Described active controller is for controlling described servo turntable, simultaneously, for receiving the communication information that needs to send to Partner and starting working or out-of-work control command for controlling Partner, and by the described communication information and described control command time-sharing send to generating laser;
Described generating laser is arranged on described servo turntable, for receiving the described communication information of described active controller transmission or described control command, launches after the described communication information of current reception or described control command are modulated to laser signal;
Described servo turntable, according to the control of controller, makes the laser beam of laser transmitter projects point to Partner;
Described laser receiving antenna is arranged on servo turntable, and servo turntable drives laser receiving antenna to point to Partner, for receiving the laser signal from Partner reflection;
Described photoelectric sensor is used for receiving described laser signal from described laser receiving antenna, and is changed into the signal of telecommunication, is transferred to signal demodulation unit; The described signal demodulation unit demodulation signal of telecommunication, realizes the acquisition of the Partner communication information;
Partner based on the reverse middle-infrared band cluster laser communication system of quantum cascade laser is made up of opal optical antenna array, photodetector, demodulator of PM signal PM, Passive Control device, modulating driver and reverse modulator;
After the laser signal that described opal optical antenna array received drive end is launched, be divided into two parts, photodetector described in fraction (1 ~ 2%) focusing illumination, the reverse modulator of major part (98 ~ 99%) focusing illumination in addition;
The laser signal of reception is converted to the signal of telecommunication by described photodetector, and is transferred to demodulator of PM signal PM;
Described demodulator of PM signal PM 6 resolve described photodetector send the signal of telecommunication, if receive be drive end send signal of communication, stored; If what receive is control command, be transferred to Passive Control device;
Described Passive Control device is to described modulating driver sending controling instruction;
Described modulating driver, according to control command, starts or quits work; After starting working, receive the communication information needing to send to drive end from Partner, and this communication information is encoded, finally coded data is sent to reverse modulator;
As shown in Figure 2, described reverse modulator is according to coded data, the opening and closing frequency of opal optical antenna array is controlled, thus, make opal optical antenna array that the laser of reception is reflected back drive end with described opening and closing frequency according to the mode of stroboscopic, realize the reverse communication of Partner.
Cluster laser communication system of the present invention can solve the problem of existing microwave information means:
Traditional approach is microwave means, adopts laser communication mode within the system, has higher traffic rate relative to microwave means, can realize hundreds of Mbps to number Gbps in less power consumption situation.
Have and adopt laser communication mode, only have drive end and Partner can obtain optical information, the spilling of other position no signals, not Existential Space radiation, therefore significantly improve the Information Security in infonnation collection process and confidentiality;
Use reverse laser communication system, receiving terminal, without turntable structure, without the need to carrying out beam emissions, is only launched, Partner lower power consumption;
Transmitting terminal adopts quantum cascade laser as transmitting illuminant, relative near infrared band, the impact of middle-infrared band on air has better compensation effect, relative near infrared communication mode, reduce the impact of bad air on laser communication, this systematic difference field and application conditions can be expanded further.
This system is with a wide range of applications, and can be widely used in and need information, the trunking communication field of gathering, have that highly dense property is high, traffic rate is high, anti-atmospheric interference, to advantages such as sensor handset power consumption requirements are low.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a reverse middle-infrared band cluster laser communication system, is characterized in that, comprise drive end and Partner; Described drive end comprises generating laser, active controller, servo turntable, laser receiving antenna, photoelectric sensor and signal demodulation unit;
Described Partner comprises opal optical antenna array, photodetector, demodulator of PM signal PM, Passive Control device, modulating driver and reverse modulator;
Described active controller is for controlling described servo turntable, simultaneously, start working or out-of-work control command for receiving the communication information that needs to send to Partner and controlling Partner, and by the described communication information and described control command time-sharing send to generating laser;
Described generating laser is arranged on described servo turntable, for receiving the described communication information of described active controller transmission or described control command, launches after the described communication information of current reception or described control command are modulated to laser signal;
The laser beam of laser transmitter projects, according to the control of controller, is pointed to Partner by described servo turntable;
Described laser receiving antenna is arranged on servo turntable, and servo turntable drives laser receiving antenna to point to Partner, receives the laser signal from Partner reflection;
Described photoelectric sensor is used for receiving described laser signal from described laser receiving antenna, and is changed into the signal of telecommunication, is transferred to signal demodulation unit; The described signal demodulation unit demodulation signal of telecommunication, realizes the acquisition of the Partner communication information;
After the laser signal that described opal optical antenna array received drive end is launched, be divided into two parts, photodetector described in a part of focusing illumination, the reverse modulator of a part of focusing illumination in addition;
The laser signal of reception is converted to the signal of telecommunication by described photodetector, and is transferred to demodulator of PM signal PM;
Described demodulator of PM signal PM resolve described photodetector send the signal of telecommunication, if receive be drive end send signal of communication, stored; If what receive is control command, be transferred to Passive Control device;
Described Passive Control device is to described modulating driver sending controling instruction;
Described modulating driver, according to control command, starts or quits work; After starting working, receive the communication information needing to send to drive end from Partner, and this communication information is encoded, finally coded data is sent to reverse modulator;
Described reverse modulator is according to coded data, to the unlatching of opal optical antenna array, close frequency and control, thus, make opal optical antenna array that the laser of reception is reflected back drive end with described unlatching, closedown frequency according to the mode of stroboscopic, realize the reverse communication of Partner.
2. a kind of reverse middle-infrared band cluster laser communication system as claimed in claim 1, is characterized in that, a corresponding multiple Partner of described drive end, quantity is determined according to communication requirement.
3. a kind of reverse middle-infrared band cluster laser communication system as claimed in claim 2, it is characterized in that, described drive end is positioned over the network node place of distributed sensor system, for obtaining the information of transducer; Partner is placed on sensor side, for sending the information that transducer obtains.
4. a kind of reverse middle-infrared band cluster laser communication system as claimed in claim 1, is characterized in that, described generating laser adopts quantum cascade laser.
5. a kind of reverse middle-infrared band cluster laser communication system as claimed in claim 1, is characterized in that, after the laser signal that described opal optical antenna array received drive end is launched, by photodetector described in the light beam focusing illumination of 1% ~ 2%.
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| CN201510971133.8A CN105553549A (en) | 2015-12-22 | 2015-12-22 | Reverse middle-infrared band cluster laser communication system based on quantum cascade laser |
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| CN201510971133.8A CN105553549A (en) | 2015-12-22 | 2015-12-22 | Reverse middle-infrared band cluster laser communication system based on quantum cascade laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306679A (en) * | 2017-12-19 | 2018-07-20 | 中国人民解放军战略支援部队航天工程大学 | A kind of reverse modulator of opal based on focal plane imbalance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020109887A1 (en) * | 2001-02-15 | 2002-08-15 | Ntt Docomo, Inc. | Optical transmitting/receiving method and system, and optical communication network |
| CN104270193A (en) * | 2014-10-28 | 2015-01-07 | 长春理工大学 | Full duplex cat eye reverse modulation recovery free space laser communication system |
| CN105071854A (en) * | 2015-08-03 | 2015-11-18 | 中国人民解放军理工大学 | Single-light-source full-duplex retro-modulating wireless optical communication device and method |
-
2015
- 2015-12-22 CN CN201510971133.8A patent/CN105553549A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020109887A1 (en) * | 2001-02-15 | 2002-08-15 | Ntt Docomo, Inc. | Optical transmitting/receiving method and system, and optical communication network |
| CN104270193A (en) * | 2014-10-28 | 2015-01-07 | 长春理工大学 | Full duplex cat eye reverse modulation recovery free space laser communication system |
| CN105071854A (en) * | 2015-08-03 | 2015-11-18 | 中国人民解放军理工大学 | Single-light-source full-duplex retro-modulating wireless optical communication device and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306679A (en) * | 2017-12-19 | 2018-07-20 | 中国人民解放军战略支援部队航天工程大学 | A kind of reverse modulator of opal based on focal plane imbalance |
| CN108306679B (en) * | 2017-12-19 | 2020-08-11 | 中国人民解放军战略支援部队航天工程大学 | Cat eye reverse modulator based on focal plane imbalance |
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Application publication date: 20160504 |