CN204008075U - Optical Fiber Numerical Aperture experiments of measuring system - Google Patents
Optical Fiber Numerical Aperture experiments of measuring system Download PDFInfo
- Publication number
- CN204008075U CN204008075U CN201420472253.4U CN201420472253U CN204008075U CN 204008075 U CN204008075 U CN 204008075U CN 201420472253 U CN201420472253 U CN 201420472253U CN 204008075 U CN204008075 U CN 204008075U
- Authority
- CN
- China
- Prior art keywords
- box
- limit switch
- power
- optical fiber
- numerical aperture
- 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
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model provides a kind of Optical Fiber Numerical Aperture experiments of measuring system, comprises control and display device, host computer, is fixed on testing fiber stationary installation on guide rail slide, collimated light source and to smooth successively.Smooth centre is provided with to light hole, motor encapsulation box and limit switch box are installed between testing fiber stationary installation and collimated light source.In described motor encapsulation box, be provided with the stepper motor of controlling swing rotary arm swing, the other end of swing rotary arm is provided with power and surveys box, and vertical shadow shield is equipped with in the bottom of power detection box, and the opposite of test surface is provided with target shape mark.The end face of limit switch box is provided with three photoelectric limit switch curved arrangement, that shadow shield can therefrom pass.Rotation and then band that control and display device are used for control step motor drive the rotation of swing rotary arm, also for gathering the power of power detection box detection and being uploaded to the calculating that host computer carries out Optical Fiber Numerical Aperture.The utility model is measured fast, accurate, cost is lower.
Description
Technical field
The utility model relates to a kind of Optical Fiber Numerical Aperture experiments of measuring system.
Background technology
Optical Fiber Numerical Aperture (NA) is the parameter that optical fiber can receive optical radiation angular range, simultaneously it is also the important parameter of the coupling efficiency while characterizing optical fiber and light source, photodetector and other coupling fiber, junction loss, microbending loss and decay temperature characterisitic, transmission bandwidth etc. are had to impact simultaneously, therefore, in Guang fiber communication Xi System, the numerical aperture of optical fiber is had to certain requirement.
At present main measuring method has far field photon flux method, and it is the adjustable incoherent light source of intensity that the method requires light source, and intensity and wavelength keep stable, and measuring system assembly is more, application inconvenience, and high to light source requirements, cost is also higher; Also having a kind of method is spot method, and the method is determined with the subjective judgement of survey crew, though device is simple, is difficult to obtain accurately intensity and just in time drops to maximal value 5%, is difficult to accurately measure the numerical aperture of optical fiber; Another kind method is refracted near-field method, and the method needs first measurement of Refractive Index Profile o curve, then by curve calculation numerical aperture, the method measuring system is more complicated compared with the test macro of far field photon flux method, and cost is higher.
Summary of the invention
The utility model, according to the definition in CCITT logarithm value aperture, utilizes the reversibility of light, and the advantage of comprehensive far field photon flux method and spot method, provides quick, accurate, the lower-cost Optical Fiber Numerical Aperture experiments of measuring of a kind of measurement system.
A kind of Optical Fiber Numerical Aperture experiments of measuring system, comprise and controlling and display device, host computer, be fixed on successively the testing fiber stationary installation on guide rail slide, collimated light source and to smooth, smooth centre is provided with to light hole, motor encapsulation box and limit switch box are installed between testing fiber stationary installation and collimated light source, in described motor encapsulation box, be provided with stepper motor, motor shaft is connected with one end of swing rotary arm, the other end of swing rotary arm is provided with power and surveys box, vertical shadow shield is equipped with in the bottom of power detection box, power is surveyed the test surface of box towards testing fiber stationary installation, the opposite of test surface is provided with target shape mark, the end face of limit switch box is provided with the first photoelectric limit switch of curved arrangement, the second photoelectric limit switch, the 3rd photoelectric limit switch, shadow shield can be from the first photoelectric limit switch, the second photoelectric limit switch, in the middle of the 3rd photoelectric limit switch, pass, the laser that collimated light source sends with to the light hole of smooth, target shape mark and testing fiber that power is surveyed the box back side are positioned on same level line, rotation and then band that described control and display device are used for control step motor drive the rotation of swing rotary arm, also for gathering power, survey the power of box detection and are uploaded to the calculating that host computer carries out the numerical aperture of optical fiber.
Optical Fiber Numerical Aperture experiments of measuring system as above, described control and display device comprise data processing unit and the power collecting unit, control module, angle display unit, power display unit, the driver element that are electrically connected with described data processing unit, the output terminal of described driver element is connected with stepper motor, and described data processing unit is for being connected by serial ports with host computer; Power is surveyed box and is provided with the BNC output interface being connected with power collecting unit, and motor encapsulation box is provided with the DB9 input interface being connected with driver element.
Optical Fiber Numerical Aperture experiments of measuring system as above, described collimated light source adopts the solid state laser of external power supply, and wavelength is 1310nm.
Optical Fiber Numerical Aperture experiments of measuring system as above, described testing fiber stationary installation adopts three-dimensional trim holder.
Optical Fiber Numerical Aperture experiments of measuring system as above, it is the isosceles triangle of 26 ° that the first photoelectric limit switch, the 3rd photoelectric limit switch and stepper motor axle center are drift angle.
The utlity model has following beneficial effect: 1, increase alignment device, guarantee that luminous power probe is parallel with testing fiber output end face, improved the precision of measuring, greatly reduced the measuring error causing because of light path problem; 2, increase automatic metering system, after good light path, communicate with host computer, can allow instrument automatically move, obtain Optical Fiber Numerical Aperture, simplified measuring process, for survey crew has been saved the time, the accuracy of card measurement result; 3, adopt the collimated light source that wavelength is 1310nm, effectively eliminated the impact that surround lighting causes measurement result.
Accompanying drawing explanation
Fig. 1 is the vertical view of the utility model Optical Fiber Numerical Aperture experiments of measuring system;
Fig. 2 is the side view of the utility model Optical Fiber Numerical Aperture experiments of measuring system;
Fig. 3 is the circuit diagram of the utility model control and display device.
In figure: 1-testing fiber stationary installation, 2-motor encapsulation box, 3-swing rotary arm, 4-power is surveyed box, 5-BNC output interface, 6-limit switch box, 7-collimated light source, 8-to smooth, the 9-the first photoelectric limit switch, the 10-the second photoelectric limit switch, the 11-the three photoelectric limit switch, 12-anti-dazzling screen, 13-DB9 input interface, 14-guide rail slide, 15-light hole, 16-stepper motor, 20-control and display device, 21-data processing unit, 22-power collecting unit, 23-control module, 24-angle display unit, 25-power display unit, 26-driver element, 30-host computer.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described.
Please refer to Fig. 1 and Fig. 2, the utility model Optical Fiber Numerical Aperture experiments of measuring system comprise testing fiber stationary installation 1, motor encapsulation box 2, swing rotary arm 3, power survey box 4, limit switch box 6, collimated light source 7, to smooth 8, the first photoelectric limit switch 9, the second photoelectric limit switch 10, the 3rd photoelectric limit switch 11, guide rail slide 14, control and display device 20.
Testing fiber stationary installation 1, collimated light source 7 and smooth 8 is fixed on guide rail slide 14 successively, collimated light source 7 adopts the solid state laser of external power supplys, and wavelength is 1310nm; In the middle of smooth 8, be provided with light hole 15.The laser of collimated light source 7 outputs can see through the light hole 15 to smooth 8.In an embodiment, testing fiber stationary installation 1 can adopt three-dimensional trim holder therein, relatively fixed fiber fixed seat, and this programme can carry out trickle adjustment according to different optical fiber, and adaptability is stronger.
Motor encapsulation box 2 and limit switch box 6 are installed between testing fiber stationary installation 1 and collimated light source 7, in described motor encapsulation box 2, be provided with stepper motor 16, stepper motor 16 adopts 256 segmentations, and precision reaches 0.004 °, 0.2 ° of minimum step, measuring accuracy is greatly improved.
One end of motor encapsulation box 2 is provided with the DB9 input interface 13 being connected with stepper motor 16.Motor shaft is connected with one end of swing rotary arm 3, the other end installation power of swing rotary arm 3 is surveyed box 4, vertical shadow shield 12 is equipped with in the bottom of power detection box 4, power is surveyed the test surface of box 4 towards testing fiber stationary installation 1, the opposite of test surface is provided with target shape mark, power survey box 4 side be provided with BNC output interface 5.
The end face of limit switch box 6 is provided with the first photoelectric limit switch 9, the second photoelectric limit switch 10, the 3rd photoelectric limit switch 11 of curved arrangement, and it is the isosceles triangle of 26 ° that two ends limit switch (i.e. the first photoelectric limit switch 9, the 3rd photoelectric limit switch 11) and electrical axis are drift angle.
Please refer to Fig. 3, control and display device 20 are arranged in a casing, described control and display device 20 comprise data processing unit 21 and the power collecting unit 22, control module 23, angle display unit 24, power display unit 25, the driver element 26 that are electrically connected with described data processing unit 21, the output terminal of described driver element 26 is connected with stepper motor 16, and described data processing unit 21 is for being connected by serial ports with host computer 30.
Described driver element 26 adopts the special-purpose stepper motor driver of 256 segmentation, by the control of control module 23, can change the angle of swing rotary arm 3 and power detection box 4, host computer 30 records the performance number under different angles, describes curve, can obtain the numerical aperture of optical fiber.
Installation and the experimentation of whole experimental provision are as follows:
Allow the laser of collimated light source 7 outputs see through the aperture to smooth 8, slide to smooth 8 and regulate collimated light source 7, make light can pass through the aperture on slide block 8 all the time;
Power is surveyed to box 4 and together with motor encapsulation box 2, be fixed on guide rail, adjust the vertical height of collimated light source 7, laser is just seen through smooth 8, directive power is surveyed the target shape mark at box 4 back sides;
Remove power and survey box 4 and motor encapsulation box 2, load onto testing fiber stationary installation 1, and one of testing fiber is contained in testing fiber stationary installation 1, other end is connected with casing FC interface, adjust optic fibre fixing device 1, mobile to smooth 8, make the laser of collimated light source 7 can see through the aperture directive testing fiber end face to smooth 8 all the time, and the hot spot that makes all the time to return from testing fiber end face reflection cover the aperture smooth 8;
After good light, remove smooth 8 and collimated light source 7, motor is encapsulated to box 2 and limit switch box 6 is contained on guide rail, swing rotary arm 3, the anti-dazzling screen 12 that makes power survey box 4 lower ends can pass in the middle of three photoelectric limit switch 9,10,11, the first photoelectric limit switch 9 and the 3rd photoelectric limit switch 11 are by the maximum anglec of rotation of restriction swing rotary arm 3, and the second photoelectric limit switch 10 is the reset reference point of swing rotary arm 3; The BNC output interface 5 (as the signal output interface of power detection box 4) that power is surveyed on box 4 is connected with the power collecting unit 22 in casing, and the DB9 input interface 13 (as the signal input interface of stepper motor 16) that motor is encapsulated on box 2 is connected connected with the driver element 26 in casing.
Connect after above-mentioned line, click the reset key (control module 23) on casing, swing rotary arm 3 can be surveyed the centre that box 4 is got back to the second limit switch 10 with kinetic power, power display unit 25 on casing and the reading of angle display unit 24 all can zero clearings, by the key change swing rotary arm 3 on casing and power, survey the angle of box 4, record the performance number under different angles, describe curve, can obtain the numerical aperture of optical fiber.
Claims (5)
1. an Optical Fiber Numerical Aperture experiments of measuring system, it is characterized in that: comprise and controlling and display device (20), host computer (30), be fixed on successively the testing fiber stationary installation (1) on guide rail slide (14), collimated light source (7) and to smooth (8), to being provided with light hole (15) in the middle of smooth (8), motor encapsulation box (2) and limit switch box (6) are installed between testing fiber stationary installation (1) and collimated light source (7), in described motor encapsulation box (2), be provided with stepper motor (16), motor shaft is connected with the one end of swing rotary arm (3), the other end of swing rotary arm (3) is provided with power and surveys box (4), vertical shadow shield (12) is equipped with in the bottom of power detection box (4), power is surveyed the test surface of box (4) towards testing fiber stationary installation (1), the opposite of test surface is provided with target shape mark, the end face of limit switch box (6) is provided with first photoelectric limit switch (9) of curved arrangement, the second photoelectric limit switch (10), the 3rd photoelectric limit switch (11), shadow shield (12) can be from the first photoelectric limit switch (9), the second photoelectric limit switch (10), in the middle of the 3rd photoelectric limit switch (11), pass, the laser that collimated light source (7) sends with to the light hole of smooth (8) (15), target shape mark and testing fiber that power is surveyed box (4) back side are positioned on same level line, described control and display device (20) drive swing rotary arm (3) rotation for rotation and then the band of control step motor (16), also for gathering the power of power detection box (4) detection and being uploaded to host computer (30), carry out the calculating of the numerical aperture of optical fiber.
2. Optical Fiber Numerical Aperture experiments of measuring system as claimed in claim 1, it is characterized in that: described control and display device (20) comprise data processing unit (21) and the power collecting unit (22), control module (23), angle display unit (24), power display unit (25), the driver element (26) that are electrically connected with described data processing unit (21), the output terminal of described driver element (26) is connected with stepper motor (16), and described data processing unit (21) is for being connected by serial ports with host computer (30); Power is surveyed box (4) and is provided with the BNC output interface (5) being connected with power collecting unit (22), and motor encapsulation box (2) is provided with the DB9 input interface (13) being connected with driver element (26).
3. Optical Fiber Numerical Aperture experiments of measuring system as claimed in claim 1, is characterized in that: described collimated light source (7) adopts the solid state laser of external power supply, and wavelength is 1310nm.
4. Optical Fiber Numerical Aperture experiments of measuring system as claimed in claim 1, is characterized in that: described testing fiber stationary installation (1) adopts three-dimensional trim holder.
5. Optical Fiber Numerical Aperture experiments of measuring system as claimed in claim 1, is characterized in that: it is the isosceles triangle of 26 ° that the first photoelectric limit switch (9), the 3rd photoelectric limit switch (11) and stepper motor (16) axle center are drift angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472253.4U CN204008075U (en) | 2014-08-20 | 2014-08-20 | Optical Fiber Numerical Aperture experiments of measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472253.4U CN204008075U (en) | 2014-08-20 | 2014-08-20 | Optical Fiber Numerical Aperture experiments of measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008075U true CN204008075U (en) | 2014-12-10 |
Family
ID=52048055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420472253.4U Expired - Fee Related CN204008075U (en) | 2014-08-20 | 2014-08-20 | Optical Fiber Numerical Aperture experiments of measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008075U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180875A (en) * | 2015-10-21 | 2015-12-23 | 长飞光纤光缆股份有限公司 | Testing method for numerical aperture of bend-insensitive multimode fiber |
| CN106568581A (en) * | 2016-11-15 | 2017-04-19 | 中电科天之星激光技术（上海）有限公司 | Optical fiber numerical aperture measuring method |
| CN108534994A (en) * | 2018-03-23 | 2018-09-14 | 中国科学院西安光学精密机械研究所 | Device and method for testing uniformity of large-diameter uniform light source |
| CN108827603A (en) * | 2018-09-03 | 2018-11-16 | 深圳市杰普特光电股份有限公司 | Semiconductor laser numerical aperture automatic test equipment and method |
-
2014
- 2014-08-20 CN CN201420472253.4U patent/CN204008075U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180875A (en) * | 2015-10-21 | 2015-12-23 | 长飞光纤光缆股份有限公司 | Testing method for numerical aperture of bend-insensitive multimode fiber |
| CN105180875B (en) * | 2015-10-21 | 2018-05-18 | 长飞光纤光缆股份有限公司 | A kind of test method of anti-bending multimode fiber numerical aperture |
| CN106568581A (en) * | 2016-11-15 | 2017-04-19 | 中电科天之星激光技术（上海）有限公司 | Optical fiber numerical aperture measuring method |
| CN108534994A (en) * | 2018-03-23 | 2018-09-14 | 中国科学院西安光学精密机械研究所 | Device and method for testing uniformity of large-diameter uniform light source |
| CN108534994B (en) * | 2018-03-23 | 2024-04-05 | 中国科学院西安光学精密机械研究所 | Device and method for testing uniformity of large-caliber uniform light source |
| CN108827603A (en) * | 2018-09-03 | 2018-11-16 | 深圳市杰普特光电股份有限公司 | Semiconductor laser numerical aperture automatic test equipment and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204008075U (en) | Optical Fiber Numerical Aperture experiments of measuring system | |
| CN110567685B (en) | Device and method for detecting refractive index of lens | |
| US10571359B2 (en) | Hydraulic structure seepage property distributed optical fiber sensing integrated system and method | |
| CN101832760B (en) | Remote three-dimensional micro-deformation visual on-line monitoring method and system | |
| CN102798377B (en) | Planar error measurement analysis system and method | |
| CN101349576A (en) | Optical fiber position digital encoder and uses thereof | |
| CN105891074B (en) | A kind of dust concentration image collecting device and acquisition method | |
| CN104007560A (en) | Auxiliary adjustment device for optical lenses | |
| CN202938795U (en) | Laser measuring device for measuring micro angles | |
| CN103048046A (en) | Double-beam spectrometer | |
| CN105526909A (en) | Settlement detecting method and device based on image recognition principle | |
| CN104180901A (en) | Transmittance spectrum measurement device and method for ultra-narrow band filter | |
| CN104930988A (en) | Optical fiber array end surface tilt angle measuring instrument and measuring method | |
| CN205691318U (en) | A kind of optical fiber macrobending loss test system | |
| CN204479031U (en) | Bidirectional integral laser diameter measuring instrument | |
| CN101865684A (en) | Device and method for measuring slope and length of dry beach | |
| CN105866071B (en) | A kind of fiber optic interferometric method surveys the device of refractive index | |
| CN205145403U (en) | A vane of multi -vane collimator structure for optical fiber positioning | |
| CN101290264B (en) | Lens laser focus-measuring device | |
| CN201021920Y (en) | Focusing automatic Abei reflector | |
| CN202709996U (en) | Device capable of measuring film thickness accurately | |
| CN203116948U (en) | Laser transverse mode discriminator | |
| CN109631948A (en) | A kind of optical fiber transfer device and method for total station calibration | |
| CN202956093U (en) | Simple optical detection device for lens thicknesses | |
| CN102620760A (en) | Optical fiber probe and composite type liquid optical fiber concentration meter employing optical fiber probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430000 Optics Valley City, Hubei Province, East Lake hi tech Development Zone, No. 111 Optics Valley Avenue, 1-02 core technology center, building No. 3, building No., No. 303 Patentee after: Wuhan light education Polytron Technologies Inc Address before: 430000 Optics Valley City, Hubei Province, East Lake hi tech Development Zone, No. 111 Optics Valley Avenue, 1-02 core technology center, building No. 3, building No., No. 303 Patentee before: WUHAN GUANGCHI TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20190820 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |