CN107196714A - For the integrated self-focusing opto-electronic receiver unit near radio optical communication system - Google Patents
For the integrated self-focusing opto-electronic receiver unit near radio optical communication system Download PDFInfo
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- CN107196714A CN107196714A CN201710569017.2A CN201710569017A CN107196714A CN 107196714 A CN107196714 A CN 107196714A CN 201710569017 A CN201710569017 A CN 201710569017A CN 107196714 A CN107196714 A CN 107196714A
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- Prior art keywords
- grin lens
- opto
- focusing
- receiver unit
- electronic receiver
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- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 238000004891 communication Methods 0.000 title claims abstract description 31
- 230000005693 optoelectronics Effects 0.000 title claims abstract description 26
- 239000002346 layers by function Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000000873 masking effect Effects 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000000644 propagated effect Effects 0.000 claims description 2
- 230000010287 polarization Effects 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
Classifications
-
- 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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
-
- 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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/67—Optical arrangements in the receiver
-
- 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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/67—Optical arrangements in the receiver
- H04B10/671—Optical arrangements in the receiver for controlling the input optical signal
-
- 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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
Abstract
Belong to wireless light communication technical field for the integrated self-focusing opto-electronic receiver unit near radio optical communication system.Prior art needs to debug opto-electronic receiver unit, and opto-electronic receiver unit has the optical energy loss caused by air dielectric.The integrated self-focusing opto-electronic receiver unit being used near radio optical communication system of the present invention includes receiving optics and photodetector, it is characterized in that, receiving optics is a GRIN Lens, the GRIN Lens is cylindrical, and the rear focus of GRIN Lens is located on the intersection point of optical axis and GRIN Lens exiting surface；The photosurface of photodetector is mutually attached with the exiting surface of GRIN Lens, and GRIN Lens optical axis intersects perpendicular to the photosurface and with the photosurface geometric center；Its refractive index of GRIN Lens N gradual change law is determined by following formula：In formula：N0The refractive index of the centre of GRIN Lens is represented, r represents the radius of GRIN Lens, and A represents the index distribution constant of GRIN Lens.
Description
Technical field
The present invention relates to a kind of integrated self-focusing opto-electronic receiver unit being used near radio optical communication system, belong to
Wireless light communication technical field.
Background technology
Near radio optical communication technique is a kind of carrier of use light wave as signal, is realized in short range big
The technology that the data such as volume file such as video are wirelessly transferred, between mobile device in a small range efficient wireless transmission everywhere
Big data quantity information.
Existing typical near radio optical communication system is successively by Signal coding and drive module, light source, transmitting optics
System, receiving optics, photodetector and signal decoder module composition.The receiving optics, photodetector
And signal decoder module constitutes the receiving module of near radio optical communication system, wherein receiving optics, photodetection
Device constitutes the opto-electronic receiver unit of receiving module.In the near radio optical communication system course of work, Signal coding and driving
Module sends coded electrical signal, and light source luminescent is driven by the coded electrical signal, and the light now sent by light source is passed as light carrier
Signal of communication is sent, the light carrier into atmospheric channel after optical transmitting system compression beam divergence angle to receiving module from transmitting；Connect
Receipts optical system, which focuses on the light carrier received, carries out opto-electronic conversion on photodetector photosurface, then decodes mould through signal
Block processing obtains transmitted signal of communication.
I.e. described receiving optics optical antenna is bonded by polylith Fresnel lens, sees Application No.
200910235096.9, the Chinese invention patent application of entitled " visible light LED wireless communication light receiving antenna ",
The program, which can be compressed, receives the distance between optical system and photodetector, and weight does not increase, such receiving module
It is more suitable for the mobile occupation mode of near radio optical communication system.
The photodetector uses high-speed photodetector, and its photosurface is smaller, therefore sensitivity is relatively low, it is necessary to by connecing
Receive optical system and light beam is focused into less hot spot, to receive more luminous energy, improve sensitivity.
The prior art is separated due to receiving optics and photodetector, it is therefore desirable to debug and difficulty compared with
Greatly；The luminous energy of reception is lost.
The content of the invention
Process is debug in order to remove the opto-electronic receiver unit in the receiving module near radio optical communication system from, is subtracted
The small optical energy loss for appearing in opto-electronic receiver unit, we invent it is a kind of be used near radio optical communication system in it is integrated from
Opto-electronic receiver unit is focused on, receiving optics is become one with photodetector, goal of the invention is not only realized, also enters
One step reduces the volume of the receiving module near radio optical communication system.
The integrated self-focusing opto-electronic receiver unit being used near radio optical communication system of the present invention includes receiving light
System and photodetector, it is characterised in that as shown in Figure 1 and Figure 2, receiving optics are a GRIN Lens 1, institute
State that GRIN Lens 1 is cylindrical, the rear focus of GRIN Lens 1 is located at the intersection point of optical axis and the exiting surface of GRIN Lens 1
On；The exiting surface of the photosurface of photodetector 2 and GRIN Lens 1 is mutually attached, and the optical axis of GRIN Lens 1 is perpendicular to the sense
Smooth surface simultaneously intersects with the photosurface geometric center；The gradual change law of its refractive index of GRIN Lens 1 N is determined by following formula：
In formula：N0The refractive index of the centre of GRIN Lens 1 is represented, r represents the radius of GRIN Lens 1, and A represents self-focusing
The index distribution constant of lens 1.
The present invention it has technical effect that：As long as the 1, the photosurface of photodetector 2 and the exiting surface of GRIN Lens 1 are close
Laminating, the geometric center of photosurface intersect with the optical axis of GRIN Lens 1, the opto-electronic receiver unit with regard to energy normal work, without
Other optics are carried out to debug；2nd, because photodetector 2 is contacted with the zero distance of GRIN Lens 1, integrated self-focusing photoelectricity is constituted
Receiving unit, therefore, will not occur because of the presence of air dielectric and caused by luminous energy be lost.
The subsidiary technique effect that the present invention is brought includes, and reduces the volume and weight of opto-electronic receiver unit, improves light
The reliability of electric receiving unit and life-span, reduce the design and processing cost of opto-electronic receiver unit.
Brief description of the drawings
Fig. 1 for the present invention for the integrated self-focusing opto-electronic receiver unit structure near radio optical communication system and
Continuous self-focusing light path schematic front view, the figure is used as Figure of abstract simultaneously.Fig. 2 is the cylindric GRIN Lens in the present invention
Structure schematic top plan view.Fig. 3 is the GRIN Lens refractive index continuous distribution curve coordinate diagram in the present invention.Fig. 4 is the present invention
Be used near radio optical communication system in integrated self-focusing opto-electronic receiver unit structure and gradient self-focusing light path main view
Schematic diagram.Fig. 5, Fig. 6 be respectively with revolution concave curved surface, the present invention for turning round convex surface plane of incidence functional layer for closely
Integrated self-focusing opto-electronic receiver unit structure and continuous self-focusing light path schematic front view in radio optical communication system.
Embodiment
In being used in the integrated self-focusing opto-electronic receiver unit near radio optical communication system for the present invention, self-focusing
The gradually changed refractive index mode of lens 1 has two kinds, and a kind of mode is consecutive variations, and as shown in Figure 1, Figure 3, the GRIN Lens 1 is
The serial masking liquid continuously successively decreased by refractive index is formed from inner outside brushing, as shown in Fig. 2 described serial masking liquid passes through electron pole
The low ion of electronic polarizability that the 1 valency ion that rate is high, diffusion coefficient is big replaces varying number at high operating temperatures prepare and
Into；Another way is graded, as shown in figure 4, the GRIN Lens 1 is the serial uniform thickness mirror successively decreased by refractive index gradient
Body nesting is formed, and described serial uniform thickness mirror body is formed using series of optical plastic production.
The present invention be used near radio optical communication system in integrated self-focusing opto-electronic receiver unit in, such as Fig. 1,
Shown in Fig. 4~6, photodetector 2 is embedded in substrate 3, and the photosurface of photodetector 2 is with the upper surface of substrate 3 and certainly
The exiting surface of condenser lens 1 is in a plane.The light intensity electric signal output pin 4 of photodetector 2 is fixed under substrate 3
Portion.
In GRIN Lens 1, incoming signal light is propagated along sinusoidal trajectory, and the length for completing a sine wave period is claimed
For a pitch P；The height of GRIN Lens 1 is1/4P odd-multiple, such as1/4P or3/4P。
In the glued functional layer 5 of the incidence surface of GRIN Lens 1, as shown in Figure 5, Figure 6, the plane of incidence of functional layer 5 has two kinds
A kind of scheme, scheme is revolution concave curved surface, as shown in figure 5, such as concave spherical surface, the recessed higher-order curved surfaces of revolution, a kind of recessed height of revolution
Rank curved surface is determined by following formula：
In formula：Φ is rotation axes of symmetry, and s is radial distance of the upper surface a little between optical axis, and C falls for radius of curvature
Number, k is the constant of the cone, A4、A6、A8... it is the 4th, 6,8 ... secondary asphericity coefficients；Revolution concave curved surface can be received more broadly
Flashlight, such as when it is sphere to turn round recessed higher-order curved surfaces, connects the side of the plane of incidence of functional layer 5 respectively from the tangent plane symmetric points A of the centre of sphere
Edge point, obtains the angle α of the line of the maximum incident angle of GRIN Lens 1, i.e., two1。
Another scheme of the plane of incidence of functional layer 5 is revolution convex surface, as shown in fig. 6, the program is used for Communication ray
Situation from spot light, the marginal point of the plane of incidence of functional layer 5 is connected from spot light B respectively, and the maximum for obtaining GRIN Lens 1 enters
The angle α of the line of firing angle, i.e., two2。
Claims (5)
1. a kind of integrated self-focusing opto-electronic receiver unit being used near radio optical communication system, including receiving optics
And photodetector, it is characterised in that receiving optics is a GRIN Lens (1), and the GRIN Lens (1) is in circle
Column, the rear focus of GRIN Lens (1) is located on the intersection point of optical axis and GRIN Lens (1) exiting surface；Photodetector
(2) exiting surface of photosurface and GRIN Lens (1) is mutually attached, GRIN Lens (1) optical axis perpendicular to the photosurface simultaneously
Intersect with the photosurface geometric center；The gradual change law of its refractive index of GRIN Lens (1) N is determined by following formula：
<mrow>
<mi>N</mi>
<mrow>
<mo>(</mo>
<mi>r</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<msub>
<mi>N</mi>
<mn>0</mn>
</msub>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mfrac>
<mi>A</mi>
<mn>2</mn>
</mfrac>
<msup>
<mi>r</mi>
<mn>2</mn>
</msup>
<mo>)</mo>
</mrow>
<mo>,</mo>
</mrow>
In formula：N0The refractive index of the centre of GRIN Lens (1) is represented, r represents the radius of GRIN Lens (1), and A represents self-focusing
The index distribution constant of lens (1).
2. the integrated self-focusing opto-electronic receiver unit according to claim 1 being used near radio optical communication system,
Characterized in that, the gradually changed refractive index mode of GRIN Lens (1) has two kinds, a kind of mode is consecutive variations, and the self-focusing is saturating
The serial masking liquid that mirror (1) system is continuously successively decreased by refractive index is formed from inner outside brushing, and described serial masking liquid passes through electronic polarization
The low ion of electronic polarizability that the 1 valency ion that rate is high, diffusion coefficient is big replaces varying number at high operating temperatures is formulated；
Another way is graded, and the serial uniform thickness mirror body nesting that GRIN Lens (1) system is successively decreased by refractive index gradient is formed,
Described serial uniform thickness mirror body is formed using series of optical plastic production.
3. the integrated self-focusing opto-electronic receiver unit according to claim 1 being used near radio optical communication system,
Characterized in that, photodetector (2) is embedded in substrate (3), the photosurface of photodetector (2) and the upper table of substrate (3)
The exiting surface of face and GRIN Lens (1) is in a plane.
4. the integrated self-focusing opto-electronic receiver unit according to claim 1 being used near radio optical communication system,
Characterized in that, in GRIN Lens (1), incoming signal light is propagated along sinusoidal trajectory, the length of a sine wave period is completed
Degree is referred to as a pitch P；The height of GRIN Lens (1) is 1/4P odd-multiple.
5. the integrated self-focusing opto-electronic receiver unit according to claim 1 being used near radio optical communication system,
Characterized in that, in the glued functional layer (5) of incidence surface of GRIN Lens (1), functional layer (5) plane of incidence has two schemes,
A kind of scheme is revolution concave curved surface, and revolution concave curved surface can more broadly receive flashlight；Another scheme is revolution evagination
Face, the program is used for situation of the Communication ray from spot light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569017.2A CN107196714A (en) | 2017-07-13 | 2017-07-13 | For the integrated self-focusing opto-electronic receiver unit near radio optical communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569017.2A CN107196714A (en) | 2017-07-13 | 2017-07-13 | For the integrated self-focusing opto-electronic receiver unit near radio optical communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107196714A true CN107196714A (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710569017.2A Pending CN107196714A (en) | 2017-07-13 | 2017-07-13 | For the integrated self-focusing opto-electronic receiver unit near radio optical communication system |
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| Country | Link |
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| CN (1) | CN107196714A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491092A (en) * | 2019-01-10 | 2019-03-19 | 京东方科技集团股份有限公司 | A kind of display device, production method and wearable device |
| CN112363256A (en) * | 2020-11-25 | 2021-02-12 | 龙岩市帝昂光学有限公司 | Self-focusing lens for power coupler and preparation method thereof |
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|---|---|---|---|---|
| US20040101247A1 (en) * | 2001-03-13 | 2004-05-27 | Yeou-Yen Chen | Filter based multiplexer/demultiplexer component |
| CN102520492A (en) * | 2011-11-30 | 2012-06-27 | 北京航星机器制造公司 | Optical receiving focusing lens for close-range free space optical communication |
| CN103712564A (en) * | 2014-01-03 | 2014-04-09 | 安徽理工大学 | Reflection type optical fiber displacement sensor based on Y-shaped optical fiber coupler and self-focusing lens |
| CN207200710U (en) * | 2017-07-13 | 2018-04-06 | 长春光客科技有限公司 | For the integrated self-focusing opto-electronic receiver unit near radio optical communication system |
-
2017
- 2017-07-13 CN CN201710569017.2A patent/CN107196714A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040101247A1 (en) * | 2001-03-13 | 2004-05-27 | Yeou-Yen Chen | Filter based multiplexer/demultiplexer component |
| CN102520492A (en) * | 2011-11-30 | 2012-06-27 | 北京航星机器制造公司 | Optical receiving focusing lens for close-range free space optical communication |
| CN103712564A (en) * | 2014-01-03 | 2014-04-09 | 安徽理工大学 | Reflection type optical fiber displacement sensor based on Y-shaped optical fiber coupler and self-focusing lens |
| CN207200710U (en) * | 2017-07-13 | 2018-04-06 | 长春光客科技有限公司 | For the integrated self-focusing opto-electronic receiver unit near radio optical communication system |
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| 张尹馨 等: "低耦合损耗的光电混合光纤旋转连接器" * |
| 贾大功 等: "自聚焦透镜装配误差对光信号耦合效率的影响" * |
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| 魏新国;晨晓;宋镜明;: "一种新颖的微型化收发一体模块" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491092A (en) * | 2019-01-10 | 2019-03-19 | 京东方科技集团股份有限公司 | A kind of display device, production method and wearable device |
| CN112363256A (en) * | 2020-11-25 | 2021-02-12 | 龙岩市帝昂光学有限公司 | Self-focusing lens for power coupler and preparation method thereof |
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Application publication date: 20170922 |
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