CN206095586U - Novel optic fibre refraction index profile measures device - Google Patents
Novel optic fibre refraction index profile measures device Download PDFInfo
- Publication number
- CN206095586U CN206095586U CN201621147652.9U CN201621147652U CN206095586U CN 206095586 U CN206095586 U CN 206095586U CN 201621147652 U CN201621147652 U CN 201621147652U CN 206095586 U CN206095586 U CN 206095586U
- Authority
- CN
- China
- Prior art keywords
- photodetector
- utility
- model
- sample cell
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a novel optic fibre refraction index profile measures device, the laser instrument right side is equipped with the PD polarizer, polarizer right side is equipped with 14 wave plates, 1 4 the wave plate right side is equipped with 45 speculums, 45 the speculum top is provided with half anti - semitransparent mirror, half anti - semitransparent mirror left side is equipped with photoelectric detector b, half anti - semitransparent mirror top is provided with the beam expanding lens and links to each other with the shell, the beam expanding lens top is provided with focusing lens and links to each other with the shell, focusing lens is connected with Z axle focus control platform, the focusing lens top is provided with the spotlight ware, spotlight ware and X Y two -dimensional scan platform is connected, X Y two -dimensional scan platform passes through displacement sensor and computer link, spotlight ware inboard is provided with the sample cell, the sample cell top is provided with photoelectric detector a, photoelectric detector a passes through photoelectricity amplifier circuit and computer link, the utility model discloses simple structure can effectively realize functions such as signal generation, collection, analysis, and accuracy of measurement is high, and system's operation is reliable and stable, and application scope is wide.
Description
Technical field
The utility model is related to technical field of optical fiber, specifically a kind of novel optical fiber profile measurement device.
Background technology
With the continuous development of optical fiber technology, various novel optical fibers continuously emerge, and are widely used in fiber optic communication and light
The fields such as fibre sensing.The index distribution of optical fiber directly affects the transmission characteristic of optical fiber as important parameter, and passes through
Refractive Index Profile o can calculate the geometric parameter of optical fiber and the maximum theoretical numerical aperture of optical fiber etc..But it is current
Ray refractive index distribution measuring results accuracy is little, it is impossible to the quality of accurate evaluation optical fiber, it is impossible to effectively realize that signal occurs, adopts
The functions such as collection, analysis, system operation is unstable, and application surface is narrower, is not suitable for being widely popularized.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of novel optical fiber profile measurement dress
Put, its simple structure, can effectively realize the functions such as signal generation, collection, analysis, measuring accuracy is high, and system run all right can
Lean on, it is applied widely.
The utility model solves the technical scheme that its technical problem adopted：A kind of novel optical fiber profile measurement
Device, it includes shell, photodetector, sample cell, concentrator, X-Y two-dimensional scanning platforms, Z axis focus control platform, focusing
Lens, beam expanding lens, half-reflecting half mirror, 45 ° of speculums, quarter wave plate, the PD polarizers, laser instruments, the outer casing bottom is provided with sharp
Light device, the laser instrument right side is provided with the PD polarizers, and the PD polarizers right side is provided with quarter wave plate, and the quarter wave plate is right
Side is provided with 45 ° of speculums, and 45 ° of speculums top is provided with half-reflecting half mirror, and the half-reflecting half mirror left side is provided with
Photodetector b, the half-reflecting half mirror top is provided with beam expanding lens and is connected with shell, and the beam expanding lens top is provided with poly-
Focus lens and it is connected with shell, the condenser lens is connected with Z axis focus control platform, the Z axis focus control platform leads to
Cross control stepper motor to adjust focusing lens positions, the condenser lens top is provided with concentrator, the concentrator and X-Y
Two-dimensional scanning platform is connected, and the X-Y two-dimensional scanning platforms pass sequentially through displacement sensing detector, data acquisition circuit and meter
Calculation machine connects, and the concentrator inner side is provided with sample cell, and the sample cell top is provided with photodetector a, the photoelectricity
Detector a passes sequentially through the connection of photoamplifier circuit, data acquisition circuit and computer.
The beneficial effects of the utility model are：
1st, the utility model simple structure, by the optics for being provided with supporting optical bench, realizes the debugging of light path
Simplification.In measurement process, by the control that platform is focused on to two-dimentional machinery scanning platform and Z axis, the poly- of hot spot is realized
Burnt and hot spot fiber end face two-dimensional scan function, meanwhile, data acquisition circuit receives the signal of position feedback module,
The signal input for collecting to computer is realized the real-time monitoring of scan position, data acquisition circuit connects photodetector
The light intensity signal for receiving sends into computer after D/A modules realize digitlization, obtains treating light-metering after later image reduction
Fine index distribution image.It is cumulative to do mean value and carry out a series of by gathering multigroup refractive index profile of optical fibers picture
Reduction and process, obtain accurate Refractive Index Profile o two-dimensional silhouette figure, realization reduction optical system and acquisition system
Noise.The functions such as signal generation, collection, analysis can be effectively realized, measuring accuracy is high, system run all right reliability is suitable for model
Enclose wide.
Description of the drawings
Fig. 1 is the utility model device overall structure diagram.
Fig. 2 is the utility model working-flow figure.
Fig. 3 is the utility model device hardware module structure chart.
Fig. 4 is the utility model system light path figure.
Fig. 5 is the utility model location detection system module principle FB(flow block).
Fig. 6 is the utility model photoelectric detection module principle process block diagram.
Fig. 7 is the utility model Z axis Micro-displacement Driving module principle flow chart.
Description of reference numerals：1- photodetector a；2- sample cells；3- concentrators；4-X-Y two-dimensional scanning platforms；5-Z axles
Focus control platform；6- condenser lenses；7- beam expanding lens；8- half-reflecting half mirrors；9-45 ° of speculum；10-1/4 wave plates；11-PD rises
Inclined device；12- laser instruments；13- photodetector b；14- shells.
Specific embodiment
With reference to specific embodiment, the utility model is expanded on further, it should be appreciated that these embodiments are merely to illustrate this
Utility model rather than restriction scope of the present utility model.In addition, it is to be understood that in the content for having read the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values also fall within application
Appended claims limited range.
It is the utility model overall system architecture schematic diagram referring to Fig. 1, a kind of Refractive Index Profile o measurement of the structure is filled
Put, shell 14, photodetector, sample cell 2, concentrator 3, X-Y two-dimensional scanning platforms 4, Z axis focus control platform 5, focusing are saturating
Mirror 6, beam expanding lens 7, half-reflecting half mirror 8,45 ° of speculums 9, quarter wave plate 10, the PD polarizers 11, laser instruments 12, the bottom of shell 14 sets
Laser instrument 12 is equipped with, the right side of laser instrument 12 is provided with the PD polarizers 11, and the right side of the PD polarizers 11 is provided with the ripple of quarter wave plate 10,1/4
The right side of piece 10 is provided with the top of 45 ° of speculums, 9,45 ° of speculums 9 and is provided with half-reflecting half mirror 8, and the left side of half-reflecting half mirror 8 is arranged
There is photodetector b13, the top of half-reflecting half mirror 8 is provided with beam expanding lens 7 and is connected with shell 14, and the top of beam expanding lens 7 is provided with
Condenser lens 6 and it is connected with shell 14, condenser lens 6 is connected with Z axis focus control platform 5, Z axis focus control platform 5 leads to
Cross control stepper motor to adjust the position of condenser lens 6, the top of condenser lens 6 is provided with concentrator 3, and concentrator 3 is two-dimentional with X-Y
Scanning platform 4 is connected, and X-Y two-dimensional scanning platforms 4 pass sequentially through displacement sensing detector, data acquisition circuit and computer and connect
Connect, the inner side of concentrator 3 is provided with sample cell 2, the top of sample cell 2 is provided with photodetector a1, and photodetector a1 leads to successively
Cross the connection of photoamplifier circuit, data acquisition circuit and computer.
It is the utility model working-flow figure referring to Fig. 2, the utility model is realized to whole survey by computer
The functional module of amount device is controlled.In measurement process, by the control that platform is focused on to two-dimentional machinery scanning platform and Z axis
System, and then complete the two-dimensional scan function that the focusing of hot spot and hot spot are realized in fiber end face.Meanwhile, data acquisition circuit connects
The signal of position feedback module is received, the signal input for collecting to computer is realized the real-time monitoring of scan position, number
The light intensity signal for receiving photodetector according to Acquisition Circuit sends into computer after D/A modules realize digitlization, passes through
The index distribution image of testing fiber is obtained after later image reduction.
It is the utility model device hardware module structure chart referring to Fig. 3, the optical fibre refractivity designed by the utility model divides
The hardware module of the whole system of cloth measurement apparatus is broadly divided into mechanical scanning drive module, location detection system module, light work(
Rate detecting module and Z axis Micro-displacement Driving module.
It is the utility model system light path figure referring to Fig. 4, wherein, light source sends for the He-Ne laser instruments 12 of 632.8nm
Many longitudinal modes, the 1w laser beams of single transverse mode become single linearly polarized light after the polarizer 11, are entering after quarter wave plate 10
It is mapped on 45 ° of speculum 9, the light through reflecting continues to propagate, then after a half-reflecting half mirror 8, a part of light
Propagation is continued up, another part light is received the monitoring for carrying out power by the photodetector on side.The light for upwardly propagating
After beam expanding lens 7 and condenser lens 6, Gaussian beam is finally converted into the focus on light beam of lambertian distribution, and the hot spot after focusing is straight
Footpath is approximately equal to one micron, and focal beam spot is finally beaten on the testing fiber sample end face being marked with the sample cell 2 of matching fluid, its
In the refractive index of matching fluid be slightly above the refractive index of fibre cladding, larger incidence angle will encourage refraction mould through tested
Reflect into ellipsoid concentrator 3 after the covering of optical fiber, finally received by the photodetector a1 on top.
It is the utility model location detection system module principle FB(flow block) referring to Fig. 5, position sensing module is in whole light
Main function is the vibration displacement for monitoring X, Y two-dimentional machinery shaking platform on fine profile measurement device, to draw
Sweep limits of the hot spot in fiber end face.When two-dimentional machinery shaking platform vibrates, between platform surface and measuring probe away from
From changing, ultimately result in voltage across poles and change.Subsequently, by the displacement signal for detecting using data acquisition electricity
Road collects, and recently entering after computer is processed can obtain position signalling, realize the real-time monitoring of position.
Fig. 6 is the utility model photoelectric detection module principle process block diagram, and photoelectric detection module is mainly used to receive by gathering
Light device collects the refraction light of coming, and the light intensity signal collected is transformed into into voltage signal, is typically converted by photodetector
The voltage signal for coming is relatively small, so the utility model adds later a photoamplifier circuit to be put voltage signal
Greatly, and after data acquisition circuit is by voltage signal acquisition it is input to computer to calculate luminous power.
Fig. 7 is the utility model Z axis Micro-displacement Driving module principle flow chart, and the major function of the module is to realize light beam
Focussing force, by adjust focusing lens positions, optimal convergence hot spot can be obtained to incide testing fiber end face.This
Utility model realizes the signal transmission to drive module by Z axis control module to reach the control to stepper motor, and then
Realize the control of position accurately to condenser lens.
Claims (1)
1. a kind of novel optical fiber profile measurement device, it is characterised in that：It include shell, photodetector, sample cell,
Concentrator, X-Y two-dimensional scanning platforms, Z axis focus control platform, condenser lens, beam expanding lens, half-reflecting half mirror, 45 ° of speculums,
Quarter wave plate, the PD polarizers, laser instrument, the outer casing bottom is provided with laser instrument, and the laser instrument right side is provided with PD and is polarized
Device, the PD polarizers right side is provided with quarter wave plate, and the quarter wave plate right side is provided with 45 ° of speculums, 45 ° of speculums
Top is provided with half-reflecting half mirror, and the half-reflecting half mirror left side is provided with photodetector b, and the half-reflecting half mirror top sets
It is equipped with beam expanding lens and is connected with shell, the beam expanding lens top is provided with condenser lens and is connected with shell, the condenser lens
It is connected with Z axis focus control platform, the Z axis focus control platform adjusts condenser lens position by controlling stepper motor
Put, the condenser lens top is provided with concentrator, and the concentrator is connected with X-Y two-dimensional scanning platforms, and the X-Y is two-dimentional
Scanning platform passes sequentially through the connection of displacement sensing detector, data acquisition circuit and computer, and the concentrator inner side is provided with
Sample cell, the sample cell top is provided with photodetector a, and the photodetector a passes sequentially through photoamplifier circuit, number
It is connected with computer according to Acquisition Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621147652.9U CN206095586U (en) | 2016-10-19 | 2016-10-19 | Novel optic fibre refraction index profile measures device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621147652.9U CN206095586U (en) | 2016-10-19 | 2016-10-19 | Novel optic fibre refraction index profile measures device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206095586U true CN206095586U (en) | 2017-04-12 |
Family
ID=58484831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621147652.9U Expired - Fee Related CN206095586U (en) | 2016-10-19 | 2016-10-19 | Novel optic fibre refraction index profile measures device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206095586U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883652A (en) * | 2019-03-29 | 2019-06-14 | 北京交通大学 | Optical fibre refractivity and internal stress measuring device based on QPM and BKC technology |
| CN112284690A (en) * | 2020-10-28 | 2021-01-29 | 山东省科学院激光研究所 | Testing device for accurately measuring distribution of distributed radial refractive indexes of optical fibers |
| CN114659737A (en) * | 2020-12-22 | 2022-06-24 | 余姚舜宇智能光学技术有限公司 | Modal measuring method and system and electronic equipment |
-
2016
- 2016-10-19 CN CN201621147652.9U patent/CN206095586U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883652A (en) * | 2019-03-29 | 2019-06-14 | 北京交通大学 | Optical fibre refractivity and internal stress measuring device based on QPM and BKC technology |
| CN112284690A (en) * | 2020-10-28 | 2021-01-29 | 山东省科学院激光研究所 | Testing device for accurately measuring distribution of distributed radial refractive indexes of optical fibers |
| CN114659737A (en) * | 2020-12-22 | 2022-06-24 | 余姚舜宇智能光学技术有限公司 | Modal measuring method and system and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102062678B (en) | Device and method for measuring transmissivity and reflectivity of optical element with heavy calibre | |
| CN103543125B (en) | All-optical gas detection method and device based on Michelson interference principle | |
| CN201110835Y (en) | Laser scattering detection device of large caliber neodymium glass surface blemishes | |
| CN206095586U (en) | Novel optic fibre refraction index profile measures device | |
| CN102589428B (en) | Asymmetric-incidence-based sample axial position tracking and correcting method and device | |
| CN107121095A (en) | A kind of method and device of accurate measurement super-large curvature radius | |
| CN101135653A (en) | Laser scattering detecting system of optical flat surface blemishes | |
| CN105044895B (en) | A kind of super-resolution confocal microscopic imaging apparatus and method | |
| CN102692394B (en) | Two-dimensional imaging method and device based on thermal lens effect | |
| CN101852676B (en) | Method and device for multifocal holographic differential confocal super-long focus measurement | |
| CN109807471A (en) | A kind of laser mark printing device and method | |
| CN102998290A (en) | Fluorescent lifetime microimaging system | |
| CN203164118U (en) | A fluorescence lifetime microimaging system | |
| CN103542813A (en) | Laser diameter measuring instrument based on boundary differential and environmental light self-calibration | |
| CN101261224B (en) | Optical non-linear method for measuring material based on 4f phase coherent imaging system | |
| CN108426633A (en) | A kind of vibration measuring method and vibration detecting device based on ligh trap | |
| CN201673113U (en) | Rock core scanner | |
| CN102589848B (en) | System for testing optical thin film damage threshold | |
| CN101294965A (en) | Miniature non-mark protein chip detecting system | |
| CN203216701U (en) | Aberration detection device for image transmitting optical fiber bundles | |
| CN219694503U (en) | Device for measuring radial misalignment distance of light beams in double-beam optical trap | |
| CN202676595U (en) | Two-dimensional imaging device based on thermal lens effect | |
| CN105510234A (en) | Optical fiber sensing-based laser excitation heat wave signal detection device | |
| CN112432766A (en) | Method for detecting performance of laser scanning galvanometer | |
| WO2023098349A1 (en) | Optical lens parameter measurement device and method |
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: 20170412 Termination date: 20171019 |