CN209330126U - A kind of laser communication system optical antenna isolation measuring device - Google Patents
A kind of laser communication system optical antenna isolation measuring device Download PDFInfo
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- CN209330126U CN209330126U CN201920092450.6U CN201920092450U CN209330126U CN 209330126 U CN209330126 U CN 209330126U CN 201920092450 U CN201920092450 U CN 201920092450U CN 209330126 U CN209330126 U CN 209330126U
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- fixing piece
- optical antenna
- reflecting mirror
- cross
- light source
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Abstract
The utility model belongs to field of optical measuring technologies, disclose a kind of laser communication system optical antenna isolation measuring device, including including light source, spectroscope, reflecting mirror, light power meter and diaphragm, it further include cross, the cross is located at the first fixing piece, the second fixing piece, third fixing piece and the 4th fixing piece is successively arranged in the two sides branch in a direction, and diaphragm, spectroscope and reflecting mirror is arranged along the optical axis of light source in second fixing piece, third fixing piece and the 4th fixing piece；The cross is respectively equipped with the 5th fixing piece and the 6th fixing piece in the two sides branch of gauge without light source and reflecting mirror, 5th fixing piece makes light power meter be directed at the spectroscope, and tested optical antenna is arranged on spectroscopical reflected light path in the 6th fixing piece.This programme is fixedly installed by each element to measuring device according to the route that optical path measures, and adjustment posture is required when without measuring tested optical antenna every time, improving measurement efficiency.
Description
Technical field
The utility model belongs to field of optical measuring technologies more particularly to a kind of laser communication system optical antenna isolation
Measuring device.
Background technique
Compared with traditional microwave space communication mode, laser space communication has broadband, height, anti-intercepting and capturing and anti-interference energy
Power is strong, the outstanding features such as small-sized, be suitable for vacant lot, absolutely empty, star, the information transmission between interspace and deep space link.?
It, can be at interface by the laser beam of a terminal transmission when terminal inner passes through different optical interfaces in laser communication system
Place occurs transmitting and scatters, and interferes light along with different degrees of the introducing on receiving photosurface of these optical phenomenas meeting.These
Interference light can have a adverse impact to system, reduce the signal-to-noise ratio of whole system, limit the communication distance of system, or even influence
The normal operation of whole system.Therefore, it is necessary to carry out high degree of isolation to hair reflection laser, its interference to receiving device is reduced.
Core component of the optical antenna as laser communication system, optical antenna is as transmitting in optic communication or receives
The equipment of optical signal, usually used is various lens, prism and plane mirror, and the control of the isolation of optical antenna decides whole
The bit error rate of a communication system.Due to using microwave, the measurement method of isolation can not be applied in optics legacy communications system
In the isolation measurement of antenna.
To solve the above problems, application No. is 201721437785.4 Chinese utility model patent, entitled laser
Communication system optical antenna isolation measuring device includes light source, spectroscope, reflecting mirror one, light power meter, two and of transmitting mirror
Diaphragm, diaphragm, spectroscope and reflecting mirror one are set gradually along light source optical axis, and reflecting mirror two is arranged in spectroscopical transmitting optical path
On, reflecting mirror and the installation space that tested optical antenna is reserved between spectroscope, reflecting mirror two is for being tested optical antenna
Pose adjustment is not involved in the measurement process of isolation.The program needs the posture to each element to adjust before measurements
It is whole, so that it is guaranteed that the transmission location of optical path is accurate, easily leads to measurement process trouble.And it also requires special using reflecting mirror two
For being tested the pose adjustment of optical antenna, reflecting mirror two is but not involved in the measurement process of practice, increases the survey of whole device
Measure cost.
Utility model content
In view of the problems of the existing technology, the utility model provides a kind of laser communication system optical antenna isolation
Measuring device is fixedly installed according to the route that optical path measures by each element to measuring device, it is tested not to be had to measurement every time
Adjustment posture is required when optical antenna, improves measurement efficiency；And tested optical antenna carries out posture without using reflecting mirror
Adjustment, reduce the element unrelated with measurement.
The base case of the utility model: a kind of laser communication system optical antenna isolation measuring device, including light source,
Diaphragm, spectroscope, reflecting mirror and light power meter further include cross, and the cross is located at in the two sides branch in a direction
It is successively arranged the first fixing piece for installing light source, the second fixing piece for installing diaphragm, for installing spectroscopical
The center of cross, institute is arranged in three fixing pieces and the 4th fixing piece for installing reflecting mirror, the third fixing piece
Stating the second fixing piece, third fixing piece and the 4th fixing piece is arranged diaphragm, spectroscope and reflecting mirror along the optical axis of light source；
The cross is respectively provided with the 5th fixing piece and use of installation light power meter in the two sides branch of gauge without light source and reflecting mirror
In the 6th fixing piece for installing tested optical antenna, the 5th fixing piece makes light power meter be directed at the spectroscope, and described the
Tested optical antenna is arranged on spectroscopical reflected light path in six fixing pieces；Be additionally provided on the cross controller and
For making the calculator of measurement isolation formula by oneself in advance, the light source and light power meter are connect with controller, the smooth function
Rate meter is also connect with the calculator；The controller is also used to control the light that reflecting mirror is deviated the light source by the 4th fixing piece
Axis direction.
Compared with prior art, this base case the utility model has the advantages that 1, this programme using cross by light source, diaphragm, point
Light microscopic, reflecting mirror and light power meter are fixed according to the route that optical path measures, and are required when without measuring tested optical antenna every time
Posture is adjusted, measurement efficiency is improved；And this programme is measured using a reflective mirror, without addition to tested optical antenna into
The reflected light of row pose adjustment reduces optical element, and only tested optical antenna, which is mounted on the 6th fixing piece, to measure.
2 and this programme the automation of entire detection process, calculator makes isolation used in tested optical antenna by oneself in advance
Measure equation is spent, light power meter measures optical power value used in formula respectively, and is sent to calculator calculating, and calculator is final to be obtained
Angle value is isolated out.Meanwhile measuring signal is also sent to controller by light power meter, controller is according to the measuring signal controller gas
Cylinder adjusts the position of reflective mirror, so that light power meter obtains the required different optical powers of isolation measurement, simplifies the present apparatus
Measurement process.
Further, the 4th fixing piece includes cylinder and rubber ring, and the output end of the cylinder connects rubber ring, described
Reflecting mirror is set in rubber ring；The cross is equipped with the groove for accommodating the 4th fixing piece, and the cylinder is used for will be anti-
Mirror is penetrated to be located at the optical axis direction of the light source or take in reflecting mirror in the groove.
Controller can realize that reflecting mirror is located at the optical axis direction of light source or is collapsible into recessed by control cylinder, cylinder
In slot, structure is simple.
Further, the 6th fixing piece includes two springs and two suckers, and two springs are separately positioned on institute
The both sides of the edge of cross branch are stated, two suckers are connected on two springs.
Tested optical antenna is stuck between two suckers, two sucker connecting springs, to be applicable in different size of tested light
Antenna is learned, the practicability of this isolation measuring device is enhanced.
Further, first fixing piece, the second fixing piece, third fixing piece and the 5th fixing piece include two cards
Block, two fixture blocks form clamping space.
Light source, diaphragm, spectroscope and light power meter are individually fixed in corresponding clamping space, can be real using fixture block
Existing, structure is simple, easy to accomplish and at low cost.
Further, the fixture block surface is equipped with frictional layer.
Frictional layer enables to fixture block to be clamped more stable.
Further, the second fixing piece of the first fixing piece distance is at least 10mm.
Guarantee that the autocollimatic of the light beam of light source transmitting is straightforward, diaphragm is remoter apart from light source light-emitting window, and light beam autocollimatic is straightforward higher.
Detailed description of the invention
Fig. 1 is the vertical view that a kind of laser communication system optical antenna isolation measuring device embodiment of the utility model provides
Figure.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain that this is practical
It is novel, it is not used to limit the utility model.
With reference to the accompanying drawing and specific embodiment is further described the application principle of the utility model:
Appended drawing reference in Figure of description includes: cross 1, light source 2, diaphragm 3, spectroscope 4, reflecting mirror 5, tested light
Learn antenna 6, power meter 7, the first fixing piece 8, the second fixing piece 9, third fixing piece 10, sucker 11, spring 12, the 5th fixing piece
13, rubber ring 14, cylinder 15, groove 16, controller 17, calculator 18.
Embodiment is based on as shown in Fig. 1: a kind of laser communication system optical antenna isolation measuring device, including cross
Frame 1, light source 2, diaphragm 3, spectroscope 4, reflecting mirror 5 and light power meter 7, cross 1 be located in the two sides branch of vertical direction according to
It is secondary to be equipped with for installing the first fixing piece 8 of light source 2, the second fixing piece 9 for installing diaphragm 3, for installing spectroscope 4
Third fixing piece 10 and the 4th fixing piece for installing reflecting mirror 5, the first fixing piece 8 and the second fixing piece 9 are arranged in cross
In the branch of 1 upside of frame, 8 the second fixing piece of distance 9 of the first fixing piece is at least 10mm.Third fixing piece 10 is arranged in cross
The downside of cross 1 is arranged in the center that 1 center, i.e. spectroscope 4 are mounted on cross 1, the 4th fixing piece
In branch.Second fixing piece 9, third fixing piece 10 and the 4th fixing piece make diaphragm 3, spectroscope 4 and reflecting mirror 5 along light source respectively
2 optical axis setting.
The two sides branch that cross 1 is located at horizontal direction is respectively provided with the 5th fixing piece 13 of installation light power meter 7
With the 6th fixing piece for installing tested optical antenna 6, the 5th fixing piece 13 is arranged in the left-hand branch of cross 1, the
Six fixing pieces are arranged in the right-hand branch of cross 1, and the 5th fixing piece 13 makes light power meter 7 be directed at the spectroscope 4, and the 6th
Tested optical antenna 6 is arranged on the reflected light path of the spectroscope 4 in fixing piece.
In the present embodiment, the 4th fixing piece includes cylinder 15 and rubber ring 14, and the output end of cylinder 15 is fixedly connected with rubber
Rubber ring 14, reflecting mirror 5 are set in rubber ring 14.The downside branch of cross 1 is equipped with for accommodating the recessed of the 4th fixing piece
Slot 16, cylinder 15 are placed in 16 bottom of groove, and cylinder 15 is used to for reflecting mirror 5 being located at the optical axis direction of light source 2 or by reflecting mirror 5
It is collapsible into groove 16.6th fixing piece includes two springs 12 and two suckers 11, and two springs 12 are separately positioned on cross
The lower edges of 1 right-hand branch of frame, two suckers 11 are connected on two springs 12, and tested optical antenna 6 is fastened on two
Between a sucker 11.First fixing piece 8, the second fixing piece 9, third fixing piece 10 and the 5th fixing piece 13 include being used to form
Two fixture blocks in space are clamped, each fixture block surface is equipped with frictional layer, and frictional layer selects rubber material, light source 2, diaphragm 3, light splitting
Mirror 4 and light power meter 7 are individually fixed in corresponding clamping space.
Controller 17 and the calculator 18 for making measurement isolation formula by oneself in advance, controller are additionally provided on cross 1
17 select STM32 serial model No., and calculator 18 selects 51 series monolithics.Light source 2 and light power meter 7 connect with controller 17
It connects, light power meter 7 is also connect with computer, and controller 17 is also used to control the 4th fixing piece and reflecting mirror 5 is deviated the light source 2
Optical axis direction, specifically, controller 17 control cylinder 15 drive reflecting mirror 5 be located at the optical axis direction of light source 2 or be collapsible into
In groove 16.
Specific implementation process is as follows: the measure equation that isolation is defined in calculator 18 is, wherein R1 is reflecting mirror 5
Reflectivity.
Tested optical antenna 6 is mounted on the 6th fixing piece, opens power supply, it is known that the spectroscope 4 of splitting ratio sends out light source 2
Light out is divided into reflected light and transmitted light, and reflected light is incident to the reception exit pupil position of tested optical antenna 6, through by photometry day
After line 6 reflects, reflective mirror projection is again passed by into the light for receiving exit pupil position and is reached at light power meter 7；Transmitted light is through reflecting
The reflection of mirror 5 is again introduced into the reflection of spectroscope 4, reaches at light power meter 7.
The optical power P1 that light power meter 7 obtains is the sum of two parts optical power, and one is tested 6 emergent pupil of optical antenna reflection
0 ' of power P passes through the optical power that spectroscope 4 projects, secondly receiving exit pupil position for tested optical antenna 6 emits optical power P0 warp
Cross the optical power of the projection of reflective mirror light beam and the reflection of reflecting mirror 5.The reflectivity for defining reflecting mirror 5 is R1, then light power meter 7 obtains
The optical power P1 taken:
P1=P0 ' T+R1TP0
Wherein, T is the transmitance of spectroscope 4.
The value of P1 can be sent to calculator 18 after obtaining optical power P1 by light power meter 7, and calculator 18 records the P1
Value, while the signal for having obtained optical power P1 is sent to controller 17 by light power meter 7, after controller 17 receives the signal, control
Device 17 processed controls cylinder 15 and takes in reflecting mirror 5 in groove 16, measures again: the spectroscope 4 of known splitting ratio is by light source 2
The light of sending is divided into reflected light and transmitted light, and reflected light is incident to the reception exit pupil position of tested optical antenna 6, through by photometry
After antenna 6 reflects, the projection of spectroscope 4 is again passed by into the light for receiving emergent pupil and is reached at light power meter 7；Transmitted light then no longer passes through
Reflecting mirror 5 is reflected into spectroscope 4.The power P 2 that light power meter 7 obtains is tested 6 emergent pupil reflection power P0 ' of optical antenna
With the product of the transmitance T of spectroscope 4:
P2=P0 ' T
The value of P2 can be sent to calculator 18 after obtaining optical power P2 by light power meter 7, and calculator 18 receives this
P2 value will pass through the calculation formula of definition, calculated value, the isolation of as tested optical antenna 6.Light power meter 7 simultaneously
The signal for having obtained optical power P2 will be sent to controller 17, controller 17 controls power supply and closes, and control cylinder 15 will
The optical axis direction of the stretching light source 2 of reflecting mirror 5.
The utility model is by cross 1 by light source 2, diaphragm 3, spectroscope 4, reflecting mirror 5 and light power meter 7 according to optical path
The route of measurement is fixed, and adjustment posture is required when without measuring tested optical antenna 6 every time, it is only necessary to by tested optical antenna
6 are mounted on the 6th fixing piece and measure, and improve measurement efficiency.And the entire detection process of this programme automates, control
Device 17 controls cylinder 15 by the measuring signal that light power meter 7 is sent, and enables cylinder 15 to adjust the position of reflective mirror, makes
Different optical powers needed for light power meter 7 obtains isolation measurement are obtained, the measurement process of the present apparatus is simplified.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (6)
1. a kind of laser communication system optical antenna isolation measuring device, including it is light source (2), diaphragm (3), spectroscope (4), anti-
Penetrate mirror (5) and light power meter (7), which is characterized in that further include cross (1), the cross (1) is located at the two of a direction
The first fixing piece (8) for installing light source (2), the second fixing piece for installing diaphragm (3) are successively arranged in the branch of side
(9), the 4th fixing piece for installing the third fixing piece (10) of spectroscope (4) and for installing reflecting mirror (5), the third
In the center of cross (1), second fixing piece (9), third fixing piece (10) and the 4th are solid for fixing piece (10) setting
Determining part respectively is arranged diaphragm (3), spectroscope (4) and reflecting mirror (5) along the optical axis of light source (2)；The cross (1) is unglazed
The two sides branch of source (2) and reflecting mirror (5) is respectively provided with the 5th fixing piece (13) of installation light power meter (7) and for pacifying
The 6th fixing piece of tested optical antenna (6) is filled, the 5th fixing piece (13) makes light power meter (7) to be directed at the spectroscope
(4), tested optical antenna (6) are arranged on the reflected light path of the spectroscope (4) in the 6th fixing piece；The cross
(1) controller (17) and the calculator (18) for making measurement isolation formula by oneself in advance, the light source (2) and light are additionally provided on
Power meter (7) is connect with controller (17), and the light power meter (7) also connect with the calculator (18)；The controller
(17) it is also used to control the optical axis direction that reflecting mirror (5) are deviated the light source (2) by the 4th fixing piece.
2. laser communication system optical antenna isolation measuring device according to claim 1, which is characterized in that described
Four fixing pieces include cylinder (15) and rubber ring (14), and the output end of the cylinder (15) connects rubber ring (14), the reflection
Mirror (5) is set in rubber ring (14)；The cross (1) is equipped with the groove (16) for accommodating the 4th fixing piece, the gas
Cylinder (15) is for being located at the optical axis direction of the light source (2) for reflecting mirror (5) or reflecting mirror (5) being taken in the groove (16)
It is interior.
3. laser communication system optical antenna isolation measuring device according to claim 1 or 2, which is characterized in that institute
Stating the 6th fixing piece includes two springs (12) and two suckers (11), and two springs (12) are separately positioned on the cross
The both sides of the edge of frame (1) branch, two suckers (11) are connected on two springs (12).
4. laser communication system optical antenna isolation measuring device according to claim 3, which is characterized in that described
One fixing piece (8), the second fixing piece (9), third fixing piece (10) and the 5th fixing piece (13) include two fixture blocks, two cards
Block forms clamping space.
5. laser communication system optical antenna isolation measuring device according to claim 4, which is characterized in that the card
Block surface is equipped with frictional layer.
6. according to claim 1, laser communication system optical antenna isolation measuring device described in 4 or 5, which is characterized in that
First fixing piece (8), second fixing piece of distance (9) is at least 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920092450.6U CN209330126U (en) | 2019-01-21 | 2019-01-21 | A kind of laser communication system optical antenna isolation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920092450.6U CN209330126U (en) | 2019-01-21 | 2019-01-21 | A kind of laser communication system optical antenna isolation measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN209330126U true CN209330126U (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920092450.6U Expired - Fee Related CN209330126U (en) | 2019-01-21 | 2019-01-21 | A kind of laser communication system optical antenna isolation measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855153A (en) * | 2020-07-21 | 2020-10-30 | 武汉优光科技有限责任公司 | Device and method for testing isolation degree of optical isolator |
-
2019
- 2019-01-21 CN CN201920092450.6U patent/CN209330126U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855153A (en) * | 2020-07-21 | 2020-10-30 | 武汉优光科技有限责任公司 | Device and method for testing isolation degree of optical isolator |
| CN111855153B (en) * | 2020-07-21 | 2022-06-10 | 武汉优光科技有限责任公司 | Device and method for testing isolation degree of optical isolator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20200121 |