CN201699014U - Photoelectric detecting component for wireless laser communication - Google Patents
Photoelectric detecting component for wireless laser communication Download PDFInfo
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- CN201699014U CN201699014U CN2010202241758U CN201020224175U CN201699014U CN 201699014 U CN201699014 U CN 201699014U CN 2010202241758 U CN2010202241758 U CN 2010202241758U CN 201020224175 U CN201020224175 U CN 201020224175U CN 201699014 U CN201699014 U CN 201699014U
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Abstract
The utility model discloses a photoelectric detecting component for wireless laser communication, mainly solving the problem that a beam splitter causes power dispersion and complex equipment. the component adopts an APD photoelectric detector (2) and a four-quadrant detector (1) of a PIN photoelectric diode which are plated with same anti-reflection films (11), are coaxially packaged in a passivating layer and are separated by an insulating layer (8); and the component is connected onto a circuit board by a common negative electrode (10) and an independent positive electrode (9) and is fixed into laser communication transceiving equipment. The APD photoelectric detector (2) detects direct current component by the four-quadrant detector (1) of the PIN photoelectric diode while detecting data signals, determines the position of a beam center on a photosensitive surface and realizes simultaneous provided detection of the data signals and the light spot position information on one component. The component simplifies a design of a communication system, improves the optical power of the received signals and can be used in the photoelectric detection field of wireless laser.
Description
Technical field
The utility model relates to the wireless laser communication technology, and specifically a kind of photoelectric sensor assembly can carry out the detection of data-signal and facula position information simultaneously at receiving terminal to light beam.
Background technology
Wireless laser communication is with respect to microwave communication, its wavelength ratio microwave wavelength is obviously short, coherence with height, good monochromaticjty and spatial orientation, characteristics such as this has determined that it has that message capacity is big, equipment volume is little, light weight, low in energy consumption, safe, good confidentiality, advantage such as in addition, also have that transmission rate height, available band are wide, construction and maintenance funds are cheap, its development prospect is very huge, is the Communication Studies focus that occurs in recent years.
At present, known radio telecommunicaltion system mostly is the light source that beacon beam and flashlight are taked different-waveband greatly, receiving terminal is surveyed data-signal and facula position information with APD photodetector and PIN photodiode 4 quadrant detector respectively, beacon beam and flashlight as German SOLACOS system are respectively 810nm and 1064nm, the beacon beam and the flashlight of U.S. SILEX system are respectively 797nm and 853nm, STRV-2 system beacon beam and flashlight are respectively 810nm and 852nm, and the beacon beam and the flashlight of Japanese LCE system are respectively 510nm and 830nm.The outstanding problem that this mode is brought is beacon beam and flashlight mutual interference mutually, and in the interference of the simultaneously necessary filtering beacon beam of detectable signal light, in order to solve the complexity that these interference must increase system design, cost obviously improves.In order to overcome this problem, produced the technology that beacon beam and flashlight adopt identical wave band light source gradually, receiving terminal utilizes light splitting technology, generally is that beam splitter is separated flashlight and beacon beam, respectively data-signal and facula position information are surveyed again.Common this beam splitter adopts by the power ratio beam split, causes power to disperse; For correct separation and detect data-signal and facula position information, receiving terminal must increase the complexity of whole communication system like this taking on the basis of beam splitter, needing survey data-signal and facula position information respectively.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, has proposed a kind of novel photoelectric sensor assembly, to improve the luminous power of received signal, reduces the complexity of communication system.
For achieving the above object, the utility model comprises APD photodetector and PIN photodiode 4 quadrant detector, wherein: APD photodetector and PIN photodiode 4 quadrant detector coaxial packaging, PIN photodiode 4 quadrant detector inside is reserved with the space, the APD photodetector is embedded in this space and fixedly is packaged as a whole with the PIN photodiode 4 quadrant detector, form integrative-structure, be separated by with insulating barrier between the two.The size of this APD photodetector is less than the size of PIN photodiode 4 quadrant detector, and both coaxial packaging are in a passivation layer.All be coated with anti-reflection film of the same race on the photosurface of PIN photodiode 4 quadrant detector and APD photodetector, the photosurface that is used to resist both increases the transmission light intensity to same wave band reflection of light.PIN photodiode 4 quadrant detector and the public negative electrode of APD photodetector, but each have independently positive electrode, make between the detected fast change photo-signal of detected direct current signal of PIN photodiode 4 quadrant detector and APD detector on external circuit, to be independent of each other.PIN photodiode 4 quadrant detector and APD detector are connected on the circuit board by electrode, and are fixed in the wireless laser communication transceiver.
The PIN photodiode 4 quadrant detector is as a kind of position sensitive device commonly used, when the incident luminous point drops on the diverse location of device photosurface, each quadrant detecting area of PIN photodiode 4 quadrant detector is exported the signal of telecommunication of different amplitudes, by these signal amplitudes are calculated, can determine the position of incident beam center on photosurface.Light beam is in the promptly fast photoelectric current that becomes of transmission of data signals, the low-speed DC composition is provided, after arriving receiving terminal, directly passes through light beam this assembly, the APD photodetector is as a kind of highly sensitive detector, when the photoelectric current that detects fast change is high-speed data signal, detect average current by the PIN photodiode 4 quadrant detector, the promptly fast flip-flop that becomes photoelectric current, this electric current can linear reflect the variation of average received signal strength intuitively, calculate by amplitude these signals, can determine the position of launching spot center on photosurface, be implemented in the detection of simultaneously receiving beam being carried out data-signal and facula position information on the assembly.
The utility model has been avoided power loss because light beam directly need not pass through beam splitter by this assembly after arriving receiving terminal, has improved the luminous power of received signal; Realized simultaneously light beam being carried out the detection of data-signal and facula position information, simplified the design of communication system complexity at receiving terminal.
Description of drawings
Fig. 1 is a structure chart of the present utility model;
Fig. 2 is a sectional structure chart of the present utility model;
Fig. 3 is use principle figure of the present utility model.
Among the figure, 1.PIN photodiode 4 quadrant detector, 2.APD photodetector, 3. raceway groove, 4～7. first, second, third and fourth PIN photodiode, 8. insulating barrier, 9. positive electrode, 10. negative electrode, 11 anti-reflection films.
Embodiment
With reference to Fig. 1, the utility model is made up of PIN photodiode 4 quadrant detector 1 and APD photodetector 2, PIN photodiode 4 quadrant detector 1 and APD photodetector 2 coaxial packaging are in passivation layer, PIN photodiode 4 quadrant detector 1 inside is reserved with the space, APD photodetector 2 is embedded in this space and fixedly is packaged as a whole with PIN photodiode 4 quadrant detector 1, separates with insulating barrier 8 between the two.The size of APD photodetector 2 is less than the size of PIN photodiode 4 quadrant detector 1.As a kind of preferred embodiment of the present utility model, the photosurface diameter of APD detector 2 is 200 μ m, and the photosurface diameter of PIN photodiode 4 quadrant detector 1 is 3mm.Wherein PIN photodiode 4 quadrant detector 1 is formed four quadrants by four PIN photodiode: first quartile 4, second quadrant 5, third quadrant 6, four-quadrant 7, be equipped with isolation channel 3 between these four quadrants, when light beam impinges upon on the photosurface of PIN photodiode 4 quadrant detector 1, the average current signal of each quadrant output varying strength, calculate by strong or weak relation, can determine the position of incident beam center on photosurface these signals.When light beam impinged upon on the photosurface of APD detector 2, light beam institute data signals transmitted was changed into the photoelectric current of fast change by APD detector 2.Because the existence of insulating barrier 8, PIN photodiode 4 quadrant detector 1 and APD detector 2 are isolated, like this, in this assembly, be independent of each other between PIN photodiode 4 quadrant detector 1 detected direct current signal and the APD detector 2 detected fast change photoelectric currents.
With reference to Fig. 2, it is a profile of the present utility model, about two be respectively PIN photodiode 5 and 4, the centre is an APD photodetector 2, PIN photodiode 5 and 4 and the photosurface of APD photodetector 2 on all be coated with anti-reflection film 11 of the same race, be used to resist PIN photodiode 5 and 4 and the photosurface of APD photodetector 2 to same wave band reflection of light, increase the transmission light intensity.PIN photodiode four- quadrant diode 5 and 4 and APD photodetector 2 public negative electrodes 10, be used to simplify circuit design, but each have independently positive electrode 9, make between PIN photodiode 4 quadrant detector 4 and 5 detected direct current signals and the APD detector 2 detected fast change photo-signals on external circuit, to be independent of each other.PIN photodiode 4 quadrant detector 4 and 5 and APD detector 2 be connected on the circuit board by positive electrode 9 and negative electrode 10, and be fixed in the wireless laser communication transceiver.PIN photodiode 5 and 4 is between the very high P type of doping content, N type semiconductor, adds the lightly doped n type material of one deck, is called I (N) layer, through forming a very wide depletion layer after the diffusion.APD photodetector 2 comprises drawing and leads to type APD and protect ring-like APD that as a kind of preferred embodiment of the present utility model, APD photodetector 2 selects to draw logical type APD, will add one deck P at depletion layer for primary photoelectric current being amplified usually
+The section bar material.
With reference to Fig. 3, it is use principle figure of the present utility model, comprise optical receiver antenna 12, photoelectric sensor assembly 13, positional information controller 14 is formed, wherein, optical receiver antenna 12 collection space light beams, during through photoelectric sensor assembly 13, when the photoelectric current that the APD photodetector detects fast change is data-signal, detect average current by the PIN photodiode 4 quadrant detector, the promptly fast flip-flop that becomes photoelectric current, this electric current can linear reflect the variation of average received signal strength intuitively, can determine the position of beam center on photosurface, this positional information forms control signal via positional information controller 14, realizes catching, aim at and following function.This assembly realizes simultaneously receiving beam being carried out the detection of data-signal and facula position information.
Claims (6)
1. photoelectric sensor assembly that is used for wireless laser communication, comprise APD photodetector (2) and PIN photodiode 4 quadrant detector (1), it is characterized in that: APD photodetector (2) and PIN photodiode 4 quadrant detector (1) coaxial packaging form integrative-structure in a passivation layer.
2. photoelectric sensor assembly according to claim 1 is characterized in that: separate by insulating barrier (8) between APD photodetector (2) and the PIN photodiode 4 quadrant detector (1).
3. photoelectric sensor assembly according to claim 1 is characterized in that: the size of APD photodetector (2) is less than the size of PIN photodiode 4 quadrant detector (1).
4. photoelectric sensor assembly according to claim 1 is characterized in that: all be coated with anti-reflection film of the same race (11) on the photosurface of PIN photodiode 4 quadrant detector (1) and APD photodetector (2).
5. photoelectric sensor assembly according to claim 1 is characterized in that: PIN photodiode 4 quadrant detector (1) and the public negative electrode of APD photodetector (2) (10).
6. photoelectric sensor assembly according to claim 1 is characterized in that: this assembly is connected on the circuit board, and is fixed in the wireless laser communication transceiver by public negative electrode (10), independent positive electrode (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202241758U CN201699014U (en) | 2010-06-11 | 2010-06-11 | Photoelectric detecting component for wireless laser communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202241758U CN201699014U (en) | 2010-06-11 | 2010-06-11 | Photoelectric detecting component for wireless laser communication |
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| Publication Number | Publication Date |
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| CN201699014U true CN201699014U (en) | 2011-01-05 |
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| CN2010202241758U Expired - Fee Related CN201699014U (en) | 2010-06-11 | 2010-06-11 | Photoelectric detecting component for wireless laser communication |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104618015A (en) * | 2015-01-04 | 2015-05-13 | 西安应用光学研究所 | Small atmosphere laser communication device and method |
| CN105783593A (en) * | 2016-05-04 | 2016-07-20 | 北京川瀚科技股份有限公司 | Laser guidance seeker and guiding method based on same |
| CN106716059A (en) * | 2014-09-29 | 2017-05-24 | 巴斯夫欧洲公司 | Detector for optically determining a position of at least one object |
| CN107124223A (en) * | 2017-05-23 | 2017-09-01 | 中国科学院半导体研究所 | To the transmitting terminal of latent communication, receiving terminal and to communication system of diving |
| CN107271142A (en) * | 2017-05-22 | 2017-10-20 | 河海大学 | Real-time optical fiber positioning device and localization method based on center drilling type 4 quadrant detector |
| CN109061831A (en) * | 2018-09-19 | 2018-12-21 | 西安理工大学 | A kind of reflective aiming tracking system of wireless laser communication and laser aiming tracking |
| CN109427923A (en) * | 2017-08-25 | 2019-03-05 | 中国科学院大连化学物理研究所 | A kind of semiconductive thin film four-quadrant optical sensor and preparation method thereof |
| CN114814714A (en) * | 2022-06-30 | 2022-07-29 | 国网湖北省电力有限公司营销服务中心(计量中心) | Photoelectric sampling device compatible with different types of intelligent electric energy meter detection |
| CN115276801A (en) * | 2022-09-19 | 2022-11-01 | 西安空间无线电技术研究所 | Satellite laser communication link light spot tracking compensation method and signal transmission method |
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2010
- 2010-06-11 CN CN2010202241758U patent/CN201699014U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106716059B (en) * | 2014-09-29 | 2020-03-13 | 巴斯夫欧洲公司 | Detector for optically determining the position of at least one object |
| CN106716059A (en) * | 2014-09-29 | 2017-05-24 | 巴斯夫欧洲公司 | Detector for optically determining a position of at least one object |
| CN104618015A (en) * | 2015-01-04 | 2015-05-13 | 西安应用光学研究所 | Small atmosphere laser communication device and method |
| CN105783593B (en) * | 2016-05-04 | 2017-06-13 | 北京川瀚科技股份有限公司 | A kind of laser seeker and its guidance method |
| CN105783593A (en) * | 2016-05-04 | 2016-07-20 | 北京川瀚科技股份有限公司 | Laser guidance seeker and guiding method based on same |
| CN107271142A (en) * | 2017-05-22 | 2017-10-20 | 河海大学 | Real-time optical fiber positioning device and localization method based on center drilling type 4 quadrant detector |
| CN107271142B (en) * | 2017-05-22 | 2019-06-18 | 河海大学 | Real-time optical fiber positioning device and localization method based on center opening type 4 quadrant detector |
| CN107124223A (en) * | 2017-05-23 | 2017-09-01 | 中国科学院半导体研究所 | To the transmitting terminal of latent communication, receiving terminal and to communication system of diving |
| CN109427923A (en) * | 2017-08-25 | 2019-03-05 | 中国科学院大连化学物理研究所 | A kind of semiconductive thin film four-quadrant optical sensor and preparation method thereof |
| CN109427923B (en) * | 2017-08-25 | 2020-06-16 | 中国科学院大连化学物理研究所 | Semiconductor thin film four-quadrant illumination sensor and preparation method thereof |
| CN109061831A (en) * | 2018-09-19 | 2018-12-21 | 西安理工大学 | A kind of reflective aiming tracking system of wireless laser communication and laser aiming tracking |
| CN109061831B (en) * | 2018-09-19 | 2021-01-15 | 西安理工大学 | Wireless laser communication reflection type aiming tracking system and laser aiming tracking method |
| CN114814714A (en) * | 2022-06-30 | 2022-07-29 | 国网湖北省电力有限公司营销服务中心(计量中心) | Photoelectric sampling device compatible with different types of intelligent electric energy meter detection |
| CN115276801A (en) * | 2022-09-19 | 2022-11-01 | 西安空间无线电技术研究所 | Satellite laser communication link light spot tracking compensation method and signal transmission method |
| CN115276801B (en) * | 2022-09-19 | 2022-12-23 | 西安空间无线电技术研究所 | Satellite laser communication link light spot tracking compensation method and signal transmission method |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20160611 |
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| CF01 | Termination of patent right due to non-payment of annual fee |