CN207690371U - The optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference - Google Patents
The optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference Download PDFInfo
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- CN207690371U CN207690371U CN201721336455.6U CN201721336455U CN207690371U CN 207690371 U CN207690371 U CN 207690371U CN 201721336455 U CN201721336455 U CN 201721336455U CN 207690371 U CN207690371 U CN 207690371U
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Abstract
The utility model provides a kind of optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference, is related to method using in optic fiber displacement sensor class technical field of teaching instruments, and in particular to a kind of optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference.The utility model is to pertain only to building and debugging about light path to solve in Physics Practical Courses Michelson interference experiment, and content is single uninteresting, the problem of being unfavorable for the practical application of student's profound understanding Michelson interference.The utility model includes transparent outer cover, No.1 flange-interface, No. two flange-interfaces, fiber coupler, optoisolator, No.1 optical patchcord, No. two optical patchcords, No.1 single mode optical fiber, No. two single mode optical fibers, fiber fixed frame, Micro displacement controllers.It is integrated in a transparent outer cover by the optical fibre displacement sensor to Michelson interference, reduces the cost of manufacture of experiment device for teaching, improve the utilization ratio of the original experimental facilities in laboratory.
Description
Technical field
The utility model is related to method using in optic fiber displacement sensor class technical field of teaching instruments, and in particular to a kind of Michelson interference
Optical fiber micro-displacement sensing teaching and experimental demonstration device.
Background technology
Michelson's interferometer is that one kind dividing amplitude double beam interferometer, is the prototype of many modern age interferometers, can with it
With interference phenomenon such as equal inclination fringe, the equal thick interference fringes of observing light, research temperature, displacement, electric field, magnetic can also be used as
The influence that the factors such as field propagate light, while the coherence length etc. of monochromatic wavelength, light source and optical filter can also be measured,
It is a kind of common experimental instrument of have many uses general verification and Research foundation theory.The adjustment principle of Michelson's interferometer,
Method and its use have certain representativeness in numerous optical instruments, and study, which adjusts and using Michelson's interferometer, to be
It is laid a good foundation, the culture of student ability is played an important role, therefore using more complicated and accurate optical instrument
As one of indispensable Classic Experiments in Experiment of College Physics.
Michelson interference experiment in Physics Practical Courses.Student passes through building and adjusting to related experiment light path
Section understands principle, the condition interfered and the observation experiment phenomenon of study Michelson's interferometer.Experiment content is relatively single
And it is more uninteresting, it is unfavorable for student to the deep understanding of Fundamentals of Sensors while the reality of Michelson interference can not be grasped answers
With.Therefore, it is necessary to which the experimental courses of Michelson interference practical application are added.
The development of optical fiber sensing technology starts from the 1970s, being one of most active branch of Development of optoelectronic technology.By
In the exclusive advantage of optical fiber, therefore optical fiber sensing technology is just greatly paid attention to once coming out, and is almost obtained in every field
Research and application, become the guide of sensing technology, push flourishing for sensing technology.Method using in optic fiber displacement sensor principle is relatively simple
It is single, it is easier to realize building for related experiment light path.Michelson's interferometer and method using in optic fiber displacement sensor are combined, to students
The practical application of Michelson interference has more intuitive meaning.
Invention content
The embodiment of the utility model provides a kind of optical fiber micro-displacement sensing teaching experiment of Michelson interference and drills
Showing device is to pertain only to building and adjusting about light path to solve Michelson interference experiment in Physics Practical Courses
Examination, content is single uninteresting, the problem of being unfavorable for the practical application of student's profound understanding Michelson interference.
In order to achieve the above object, the utility model embodiment adopts the following technical scheme that：
Provide a kind of optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference, the method using in optic fiber displacement sensor
Experiment device for teaching includes transparent outer cover（1）, No.1 flange-interface（2）, No. two flange-interfaces（3）, fiber coupler
（4）, optoisolator（5）, No.1 optical patchcord（6）, No. two optical patchcords（7）, No.1 single mode optical fiber（8）, No. two single mode optical fibers
（9）, fiber fixed frame（10）, Micro displacement controller（11）；
Transparent outer cover（1）, the transparent outer cover（1）For cube structure, it contains cube groove（1-1）,
And No.1 flange-interface（2）With No. two flange-interfaces（3）Positioned at transparent outer cover（1）Same side；
Cube groove（1-1）, the cube bottom portion of groove is with Micro displacement controller guide rail（1-1-1）, and two
Number single mode optical fiber（9）Part can pass through cube groove（1-1）；
Fiber coupler（4）Side is separately connected No.1 optical patchcord（6）With No. two optical patchcords（7）, other side difference
Connect No.1 single mode optical fiber（8）With No. two single mode optical fibers（9）, No.1 optical patchcord（6）The other side connects No.1 flange-interface
（2）, the other side connects No. two flange-interfaces（3）, and No.1 optical patchcord（6）It is upper to carry optoisolator（5）, and fiber fixed frame
（10）And Micro displacement controller（11）Positioned at cube groove（1-1）Both sides.
The Micro displacement controller guide rail（1-1-1）It is upper to carry scale, Micro displacement controller（11）It can on it freely
It slides and fixed.
The fiber coupler（4）For four port couplers, two-port is respectively provided in its both sides, and per side ports
Coupling ratio is 50:50, and bottom is by way of bonding and transparent outer cover（1）Bottom plate be connected.
The optoisolator（5）Optical signal can only be made in No.1 optical patchcord（6）It is interior along No.1 flange-interface（2）Xiang Guang
Fine coupler（4）Direction one-way transmission.
The No.1 optical patchcord（6）With No. two optical patchcords（7）Equal length.
No. two single mode optical fibers（9）Positioned at cube groove（1-1）Interior both ends are held on fiber fixed frame respectively
（10）And Micro displacement controller（11）On, and both ends are contour, and this part fiber is to remove the bare fibre of coat, and No. two lists
Mode fiber（9）End face be coated with optical reflection film.
The No.1 single mode optical fiber（8）End face is coated with optical reflection film, and No.1 single mode optical fiber（8）Than No. two lists of length
Mode fiber（9）The short 1.3mm of length.
The Micro displacement controller（11）With distance fine regulation knob, and distance fine regulation knob carries scale, by micro-
Displacement controller guide rail（1-1-1）On scale and distance fine regulation knob on scale it is readable go out fiber fixed frame（10）With microbit
Shift controller（11）Distance.
The utility model has the beneficial effects that：The utility model tests the Michelson interference in Experiment of College Physics real
Extended with change direction：Michelson's interferometer is combined with method using in optic fiber displacement sensor, has made the Michael of high integration
The method using in optic fiber displacement sensor experimental demonstration device of inferior interference.It is installed and is fixed needed for Michelson interference by a transparent outer cover
Laboratory apparatus and micro-displacement control device, integrated level are high.The experimental demonstration device can be by two flange ports and laboratory
Light source be connected with spectrometer, greatly reduce the input cost of experimental facilities while improving the utilization of laboratory existing equipment
Efficiency.The teaching experimental equipment shell is made of transparent material, experiment student can be made to see internal light path visual and clearly, just
Systematic learning is carried out to the practical application of Michelson's interferometer in student, deepens the understanding to its related practical content and the palm
It holds.Apparatus for demonstrating integrates Micro displacement controller, and the scale of distance scale is carried on Micro displacement controller and its guide rail, can lead to
The size that the graduated scale reads fiber optics displacement is crossed, the correspondence of displacement and spectrum change is obtained.The teaching experimental equipment has
Have the advantages that integrated level is high, easy to operate, visual and clear, cost of manufacture is cheap.
Description of the drawings
Fig. 1 is the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference.
Specific implementation mode
Specific embodiment of the present utility model is further illustrated with reference to the accompanying drawings of the specification.
Such as Fig. 1, a kind of optical fiber micro-displacement sensing teaching and experimental demonstration dress of Michelson interference described in present embodiment
It sets, which includes transparent outer cover（1）, No.1 flange-interface（2）, No. two flange-interfaces
（3）, fiber coupler（4）, optoisolator（5）, No.1 optical patchcord（6）, No. two optical patchcords（7）, No.1 single mode optical fiber
（8）, No. two single mode optical fibers（9）, fiber fixed frame（10）, Micro displacement controller（11）；
Transparent outer cover（1）, the transparent outer cover（1）For cube structure, it contains cube groove（1-1）,
And No.1 flange-interface（2）With No. two flange-interfaces（3）Positioned at transparent outer cover（1）Same side；
Cube groove（1-1）, the cube bottom portion of groove is with Micro displacement controller guide rail（1-1-1）, and two
Number single mode optical fiber（9）Part can pass through cube groove（1-1）；
Fiber coupler（4）Side is separately connected No.1 optical patchcord（6）With No. two optical patchcords（7）, other side difference
Connect No.1 single mode optical fiber（8）With No. two single mode optical fibers（9）, No.1 optical patchcord（6）The other side connects No.1 flange-interface
（2）, the other side connects No. two flange-interfaces（3）, and No.1 optical patchcord（6）It is upper to carry optoisolator（5）, and fiber fixed frame
（10）And Micro displacement controller（11）Positioned at cube groove（1-1）Both sides.
The Micro displacement controller guide rail（1-1-1）It is upper to carry scale, Micro displacement controller（11）It can on it freely
It slides and fixed.
The fiber coupler（4）For four port couplers, two-port is respectively provided in its both sides, and per side ports
Coupling ratio is 50:50, and bottom is by way of bonding and transparent outer cover（1）Bottom plate be connected.
The optoisolator（5）Optical signal can only be made in No.1 optical patchcord（6）It is interior along No.1 flange-interface（2）Xiang Guang
Fine coupler（4）Direction one-way transmission.
The No.1 optical patchcord（6）With No. two optical patchcords（7）Equal length.
No. two single mode optical fibers（9）Positioned at cube groove（1-1）Interior both ends are held on fiber fixed frame respectively
（10）And Micro displacement controller（11）On, and both ends are contour, and this part fiber is to remove the bare fibre of coat, and No. two lists
Mode fiber（9）End face be coated with optical reflection film.
The No.1 single mode optical fiber（8）End face is coated with optical reflection film, and No.1 single mode optical fiber（8）Than No. two lists of length
Mode fiber（9）The short 1.3mm of length.
The Micro displacement controller（11）With distance fine regulation knob, and distance fine regulation knob carries scale, by micro-
Displacement controller guide rail（1-1-1）On scale and distance fine regulation knob on scale it is readable go out fiber fixed frame（10）With microbit
Shift controller（11）Distance.
When in use, Micro displacement controller is first set into zero in the enterprising line position of Micro displacement controller guide rail, then adjusts microbit
Distance fine regulation knob on shift controller makes its zero, and No. two single mode optical fibers are clamped in fiber fixed frame and Micro displacement controller
On.Wideband light source is connect by an optical patchcord with No.1 farad interface, spectrometer passes through an optical patchcord and No. two farads
Interface connects.Open wideband light source switch and spectrometer switch.Micro-displacement is adjusted after the output of the optical signal of wideband light source is stablized
Position of the controller on Micro displacement controller guide rail, adjustable range vernier knob read corresponding displacement size, pass through recording light
Change in displacement and the relationship of spectral drift can be obtained in the spectrum of different displacements on spectrometer.
Operation principle：
The optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference：
The course of work：Micro displacement controller is first set into zero in the enterprising line position of Micro displacement controller guide rail, then adjusts microbit
Distance fine regulation knob on shift controller makes its zero, and No. two single mode optical fibers are clamped in fiber fixed frame and Micro displacement controller
On.Wideband light source is connect by an optical patchcord with No.1 farad interface, spectrometer passes through an optical patchcord and No. two farads
Interface connects.Open wideband light source switch and spectrometer switch.Optical signal enters the apparatus for demonstrating through No.1 flange-interface.Light is believed
No.1 optical patchcord number is first passed through in apparatus for demonstrating reaches fiber coupler, light is divided into two beams after fiber coupler,
In a branch of reach reference beam of the No.1 single mode optical fiber as Michelson interference.Another light beam reaches No. two single mode optical fibers, makees
For the sensing light beam of Michelson interference.When change in displacement, No. two single mode optical fibers are by fiber fixed frame and Micro displacement controller
Clamping movement deform upon, cause light path of transmission light in it to change.Two-beam is reflected back fiber coupler simultaneously respectively
Interference is generated in fiber coupler.Interfering beam is reached through No. two optical patchcords at No. two flange-interfaces, and the optical signal is by light
Spectrometer receives and shows corresponding interference spectrum on spectrometer.When displacement changes, interference spectrum drifts about, and leads to
The collection analysis to spectrometer data is crossed, the correspondence of change in displacement and spectral drift can be obtained, realizes the sensing of displacement.
Claims (8)
1. the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference, it is characterised in that：It includes transparent outer cover
（1）, No.1 flange-interface（2）, No. two flange-interfaces（3）, fiber coupler（4）, optoisolator（5）, No.1 optical patchcord
（6）, No. two optical patchcords（7）, No.1 single mode optical fiber（8）, No. two single mode optical fibers（9）, fiber fixed frame（10）, micro-displacement control
Device（11）；
Transparent outer cover（1）, the transparent outer cover（1）For cube structure, it contains cube groove（1-1）, and one
Number flange-interface（2）With No. two flange-interfaces（3）Positioned at transparent outer cover（1）Same side；
Cube groove（1-1）, the cube bottom portion of groove is with Micro displacement controller guide rail（1-1-1）, and No. two lists
Mode fiber（9）Part can pass through cube groove（1-1）；
Fiber coupler（4）Side is separately connected No.1 optical patchcord（6）With No. two optical patchcords（7）, the other side is separately connected
No.1 single mode optical fiber（8）With No. two single mode optical fibers（9）, No.1 optical patchcord（6）The other side connects No.1 flange-interface（2）, two
Number optical patchcord（7）The other side connects No. two flange-interfaces（3）, and No.1 optical patchcord（6）It is upper to carry optoisolator（5）, and
Fiber fixed frame（10）And Micro displacement controller（11）Positioned at cube groove（1-1）Both sides.
2. the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference according to claim 1, feature
It is：The Micro displacement controller guide rail（1-1-1）It is upper to carry scale, Micro displacement controller（11）It can be free to slide on it
And fixation.
3. the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference according to claim 1, feature
It is：The fiber coupler（4）For four port couplers, two-port, and the coupling per side ports are respectively provided in its both sides
Composition and division in a proportion is 50:50, and bottom is by way of bonding and transparent outer cover（1）Bottom plate be connected.
4. the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference according to claim 1, feature
It is：The optoisolator（5）Optical signal can only be made in No.1 optical patchcord（6）It is interior along No.1 flange-interface（2）To optical fiber
Coupler（4）Direction one-way transmission.
5. the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference according to claim 1, feature
It is：The No.1 optical patchcord（6）With No. two optical patchcords（7）Equal length.
6. the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference according to claim 1, feature
It is：No. two single mode optical fibers（9）Positioned at cube groove（1-1）Part, both ends are held on optical fiber and fix respectively
Frame（10）And Micro displacement controller（11）On, and both ends are contour, this part fiber is to remove the bare fibre of coat, and No. two lists
Mode fiber（9）End face be coated with optical reflection film.
7. the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference according to claim 1, feature
It is：The No.1 single mode optical fiber（8）End face is coated with optical reflection film, and No.1 single mode optical fiber（8）Than No. two single modes of length
Optical fiber（9）The short 1.3mm of length.
8. the optical fiber micro-displacement sensing teaching and experimental demonstration device of Michelson interference according to claim 1, feature
It is：The Micro displacement controller（11）With distance fine regulation knob, and distance fine regulation knob carries scale, passes through micro-displacement
Controller guide rail（1-1-1）On scale and distance fine regulation knob on scale it is readable go out fiber fixed frame（10）With micro-displacement control
Device processed（11）Distance.
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443404A (en) * | 2018-12-04 | 2019-03-08 | 中国计量大学 | A kind of optical fiber white light interference device of band measurement sliding rail |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443404A (en) * | 2018-12-04 | 2019-03-08 | 中国计量大学 | A kind of optical fiber white light interference device of band measurement sliding rail |
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Granted publication date: 20180803 Termination date: 20191018 |