CN107870039A - A kind of Fourier transform spectrometer - Google Patents
A kind of Fourier transform spectrometer Download PDFInfo
- Publication number
- CN107870039A CN107870039A CN201610852611.8A CN201610852611A CN107870039A CN 107870039 A CN107870039 A CN 107870039A CN 201610852611 A CN201610852611 A CN 201610852611A CN 107870039 A CN107870039 A CN 107870039A
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- Prior art keywords
- fiber
- optical fiber
- type optical
- process film
- heating process
- 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.)
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- 238000010438 heat treatment Methods 0.000 claims abstract description 78
- 239000000835 fiber Substances 0.000 claims abstract description 71
- 239000013307 optical fiber Substances 0.000 claims abstract description 64
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims description 41
- 229910052751 metal Inorganic materials 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 7
- 238000007747 plating Methods 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 2
- 239000010931 gold Substances 0.000 claims 2
- 229910052737 gold Inorganic materials 0.000 claims 2
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/45—Interferometric spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0286—Constructional arrangements for compensating for fluctuations caused by temperature, humidity or pressure, or using cooling or temperature stabilization of parts of the device; Controlling the atmosphere inside a spectrometer, e.g. vacuum
Abstract
The invention discloses a kind of Fourier transform spectrometer,It includes Mach once moral structure,Once moral structure includes the first fiber coupler of input optical signal to described Mach,Two fiber arms for exporting the second fiber coupler of optical signal and being connected between two fiber couplers,At least provided with the input port of input measured signal on the first described fiber coupler,The second described fiber coupler is provided with signal output port,Described two fiber arms wherein one are D-type optical fiber,Once moral structure also includes the heater that corresponding D-type optical fiber is set to described Mach,Described heater makes its expansion elongation for heating D-type optical fiber,Improve D-type optical fiber and the optical path difference of another fiber arm,Realize that the optical path difference of two fiber arms is adjusted using the expanded by heating of optical fiber,Not only increase the scanning resolution of spectrometer,Also make device scan effect stability more preferable.
Description
Technical field
The present invention relates to spectrometer device field, especially a kind of Fourier transform spectrometer.
Background technology
Fourier transform spectrometer is using FT-NIR spectra method to material atom and molecule absorption, emission spectrum
The instrument analyzed, its principle are the corresponding relations using between interference pattern and light source spectrogram, using measuring interference pattern and right
It carries out Fourier transform and obtains spectrogram, and then gets required spectral information, and traditional Fourier transform spectrometer needs
The resolution ratio for coordinating adjustment to improve scanning gained image, and conventional Fourier Transform spectrometer are carried out using moving component
Optical beam-splitter easily influenceed by environmental vibration, temperature easily causes phase error and intensity error, for this feelings
Condition, occurs the optical fiber Fourier transform spectrometer based on Mach-Zehnder interferometer at present, using optical fiber and fiber coupler point
Not instead of conventional light path and beam splitter, the scanning of optical path difference is realized instead of traditional index glass by changing the length of optical fiber, by
In Fourier transform spectrometer resolution ratio mainly by the optical path difference of two fiber arms of Mach-Zehnder interferometer come what is determined, think
The optical path difference of two fiber arms must just be improved by improving the resolution ratio of spectrometer, and spectrometer adjusts the side of optical fiber arm lengths at present
Formula is more single more by the way of physical extension, and easily causes machine volume to become big.
The content of the invention
In order to solve the deficiencies in the prior art, fast it is an object of the invention to provide a kind of high resolution, sweep speed
Fourier transform spectrometer.
In order to realize above-mentioned technical purpose, the technical scheme is that：A kind of Fourier transform spectrometer, including horse
Conspicuous once moral structure, once moral structure includes the first fiber coupler of input optical signal, exports the second of optical signal described Mach
Fiber coupler and two fiber arms being connected between two fiber couplers, at least set on the first described fiber coupler
There is the input port of input measured signal, the second described fiber coupler is provided with signal output port, described two light
Wherein one, fine arm is D-type optical fiber, and once moral structure also includes the heater that corresponding D-type optical fiber is set to described Mach, described
Heater be used to heating D-type optical fiber and make its expansion elongation, improve the optical path difference of D-type optical fiber and another fiber arm.
Further, once moral structure also includes the air cooling equipment that corresponding D-type optical fiber is set to described Mach, and described is air-cooled
Device is used to cool down the D-type optical fiber after heating.
As a kind of embodiment of heater of the present invention, described heater includes METAL HEATING PROCESS film and laser shines
Emitter, the plating of described METAL HEATING PROCESS film are located at similar in D-type optical fiber planar side and fibre core on position, described laser irradiation device light
Line transmitting terminal is corresponding with METAL HEATING PROCESS film location.
As the another embodiment of heater of the present invention, described heater includes METAL HEATING PROCESS film, resistance
Silk and heating power supply, the plating of described METAL HEATING PROCESS film are located at similar in D-type optical fiber planar side and fibre core on position, described resistance
Silk is fixedly installed on the outer surface of METAL HEATING PROCESS film and electrically connected with heating power supply.
Further, described resistance wire passes through welding, glued or tie up and be fixed on the outer surface of METAL HEATING PROCESS film.
Further, the surface and the fibre core of D-type optical fiber that described METAL HEATING PROCESS film and D-type optical fiber planar side fit
The distance between be 2~3um.
As another embodiment of heater of the present invention, described heater includes ceramic cartridge heater, heating
Electrode, METAL HEATING PROCESS film, heating power supply, described heating electrode are arranged on outside ceramic cartridge heater parallel along cartridge heater length direction
Surface, and be coated and fixed by METAL HEATING PROCESS film, described D-type optical fiber is wrapped on the outer surface of METAL HEATING PROCESS film.
Using above-mentioned technical scheme, beneficial effects of the present invention are：By in the Mach of spectrometer once moral structure
Set METAL HEATING PROCESS film to carry out auxiliary heating to optical fiber wherein on a fiber arm, optical fiber is heated in a short time swollen
Swollen its optical path difference with another fiber arm of increase, is improved the scanning resolution of equipment, is pasted using D-type optical fiber and METAL HEATING PROCESS film
Closing can ensure that metal heating film keeps good contact effect with the planar side of D-type optical fiber, increase heat transfer area.
Brief description of the drawings
The present invention is further elaborated with reference to the accompanying drawings and detailed description：
Fig. 1 is the Mach once moral structure simplified diagram of the embodiment of the present invention 1；
Fig. 2 is the relative position schematic diagram of D-type optical fiber and laser irradiation device in the embodiment of the present invention 1；
Fig. 3 is the diagrammatic cross-section of D-type optical fiber in the embodiment of the present invention 1；
Fig. 4 is the Mach once moral structure simplified diagram of the embodiment of the present invention 2；
Fig. 5 is the diagrammatic cross-section of D-type optical fiber in the embodiment of the present invention 2；
Fig. 6 is the Mach once moral structure simplified diagram of the embodiment of the present invention 3；
Fig. 7 is the scheme of installation of the ceramic cartridge heater of the embodiment of the present invention 3, heating electrode, METAL HEATING PROCESS film and optical fiber.
Embodiment
Embodiment 1
As shown in Fig. 1 to one of 3, the present invention includes Mach once moral structure, and once moral structure includes input optical signal to described Mach
The first fiber coupler 1, export optical signal the second fiber coupler 2 and be connected between two fiber couplers two
Fiber arm, at least provided with the input port 11 of input measured signal, the second fiber coupler on the first described fiber coupler 1
2 are provided with signal output port 21, and described two fiber arms wherein one are D-type optical fiber 4, and once moral structure was also for described Mach
The heater set including corresponding D-type optical fiber 4, described heater include METAL HEATING PROCESS film 5 and laser irradiation device 6, institute
The plating of METAL HEATING PROCESS film 5 stated is located at the planar side of D-type optical fiber 4 with position, making METAL HEATING PROCESS film 5 and fibre core 41 similar in fibre core 41
Distance be 2~3um, the described light transmitting terminal of laser irradiation device 6 is corresponding with the position of METAL HEATING PROCESS film 5.
When equipment is actuated for scanning, measured signal is passed to respectively after the fiber coupler 1 of input port 11 and first
Into two fiber arms 3,4, now, laser irradiation device 6 starts and sends laser to be carried out to the METAL HEATING PROCESS film 5 in D-type optical fiber 4
Irradiation, make 41 elongation heated and expanded of fibre core of D-type optical fiber 4 after the heated heating of METAL HEATING PROCESS film 5 by heat transfer, change to be measured
Optical path difference of the signal between fiber arm 3 and D-type optical fiber 4, improve the image resolution ratio after device scan.
In order that equipment, after scanned, D-type optical fiber 4 can be cooled to original state as early as possible, to carry out in next step
Scanning, once moral structure also includes the air cooling equipment that corresponding D-type optical fiber 4 is set to described Mach, is cooled down using air cooling equipment
D-type optical fiber 4 after heating.
Embodiment 2
As shown in Fig. 4 to one of 5, the present invention includes Mach once moral structure, and once moral structure includes input optical signal to described Mach
The first fiber coupler 1, export optical signal the second fiber coupler 2 and be connected between two fiber couplers two
Fiber arm, at least provided with the input port 11 of input measured signal, the second fiber coupler on the first described fiber coupler 1
2 are provided with signal output port 21, and described two fiber arms wherein one are D-type optical fiber 4, and once moral structure was also for described Mach
The heater set including corresponding D-type optical fiber 4, described heater include METAL HEATING PROCESS film 5, resistance wire 7, heating power supply
8, the plating of described METAL HEATING PROCESS film 5 is located at the planar side of D-type optical fiber 4 with position, making METAL HEATING PROCESS film 5 and fibre similar in fibre core 41
The distance of core 41 is 2~3um, described resistance wire 7 can by welding, it is glued, tie up and be arranged on the appearance of METAL HEATING PROCESS film
On face, the both ends connection heating power supply 8 of resistance wire 7.
When equipment is actuated for scanning, measured signal is passed to respectively after the fiber coupler 1 of input port 11 and first
Into two fiber arms 3,4, now, heating power supply 8 starts to the electrified regulation of resistance wire 7, to metal after the heated heating of resistance wire 7
Heating film 5 carries out heat transfer, makes the fibre core 41 of D-type optical fiber 4 heated and expanded by heat transfer after the heated heating of METAL HEATING PROCESS film 5
Elongation, change optical path difference of the measured signal between fiber arm 3 and D-type optical fiber 4, improve the image resolution ratio after device scan.
In order that equipment, after scanned, D-type optical fiber 4 can be cooled to original state as early as possible, to carry out in next step
Scanning, once moral structure also includes the air cooling equipment that corresponding D-type optical fiber 4 is set to described Mach, is cooled down using air cooling equipment
D-type optical fiber 4 after heating.
Embodiment 3
As shown in Fig. 6 to one of 7, the present invention includes Mach once moral structure, and once moral structure includes input optical signal to described Mach
The first fiber coupler 1, export optical signal the second fiber coupler 2 and be connected between two fiber couplers two
Fiber arm, at least provided with the input port 11 of input measured signal, the second fiber coupler on the first described fiber coupler 1
2 are provided with signal output port 21, and described two fiber arms wherein one are D-type optical fiber 4, and once moral structure was also for described Mach
The heater set including corresponding D-type optical fiber 4, described heater include ceramic cartridge heater 9, heating electrode 10, metal
Heating film 5, heating power supply, described heating electrode 10 are arranged on outside ceramic cartridge heater 9 parallel along the length direction of ceramic cartridge heater 9
Surface, and be coated and fixed by METAL HEATING PROCESS film 5, described D-type optical fiber 4 is wrapped on the outer surface of METAL HEATING PROCESS film 5.
When equipment is actuated for scanning, measured signal is passed to respectively after the fiber coupler 1 of input port 11 and first
Into two fiber arms 3,4, now, heating power supply, which starts, carries out electrified regulation to heating electrode 10, the heated heating of heating electrode 7
Heat transfer is carried out to METAL HEATING PROCESS film 5 afterwards, made after the heated heating of METAL HEATING PROCESS film 5 by heat transfer the fibre core 41 of D-type optical fiber 4 by
Heat simultaneously expands elongation, changes optical path difference of the measured signal between fiber arm 3 and D-type optical fiber 4, improves the image after device scan
Resolution ratio.
In order that equipment, after scanned, D-type optical fiber 4 can be cooled to original state as early as possible, to carry out in next step
Scanning, once moral structure also includes the air cooling equipment that corresponding D-type optical fiber 4 is set to described Mach, is cooled down using air cooling equipment
D-type optical fiber 4 after heating.
The embodiment of the present invention is the foregoing described, it will be appreciated by those of skill in the art that this is only to lift
Example explanation, those skilled in the art can do on the premise of without departing substantially from the principle and essence of the present invention to this embodiment
Go out various changes or modifications, but these changes and modification each fall within protection scope of the present invention.
Claims (7)
- A kind of 1. Fourier transform spectrometer, it is characterised in that：It includes Mach once moral structure, described Mach once moral structure bag The first fiber coupler of input optical signal is included, the second fiber coupler of optical signal is exported and is connected to two fiber couplers Between two fiber arms, it is described at least provided with the input port of input measured signal on the first described fiber coupler Second fiber coupler is provided with signal output port, and described two fiber arms wherein one are D-type optical fiber, described Mach Once moral structure also included the heater that corresponding D-type optical fiber is set, and described heater makes its expansion for heating D-type optical fiber Elongation, improve D-type optical fiber and the optical path difference of another fiber arm.
- A kind of 2. Fourier transform spectrometer according to claim 1, it is characterised in that：Described heater includes gold Belong to heating film and laser irradiation device, the plating of described METAL HEATING PROCESS film is located at similar in D-type optical fiber planar side and fibre core on position, institute The laser irradiation device light transmitting terminal stated is corresponding with METAL HEATING PROCESS film location.
- A kind of 3. Fourier transform spectrometer according to claim 1, it is characterised in that：Described heater includes gold Belong to heating film, resistance wire and heating power supply, the plating of described METAL HEATING PROCESS film is located at D-type optical fiber planar side and position similar in fibre core On, described resistance wire is fixedly installed on the outer surface of METAL HEATING PROCESS film and electrically connected with heating power supply.
- A kind of 4. Fourier transform spectrometer according to claim 3, it is characterised in that：Described resistance wire passes through weldering Connect, be glued or tie up and be fixed on the outer surface of METAL HEATING PROCESS film.
- A kind of 5. Fourier transform spectrometer according to Claims 2 or 3, it is characterised in that：Described METAL HEATING PROCESS film The distance between the surface to be fitted with D-type optical fiber planar side and the fibre core of D-type optical fiber are 2~3um.
- A kind of 6. Fourier transform spectrometer according to claim 1, it is characterised in that：Described heater includes pottery Porcelain cartridge heater, heating electrode, METAL HEATING PROCESS film, heating power supply, described heating electrode are set parallel along cartridge heater length direction It is coated and fixed in ceramic heat tube outer surface, and by METAL HEATING PROCESS film, described D-type optical fiber is wrapped in the outer of METAL HEATING PROCESS film On surface.
- A kind of 7. Fourier transform spectrometer according to claim 1, it is characterised in that：Once moral structure was also for described Mach The air cooling equipment set including corresponding D-type optical fiber, described air cooling equipment are used to cool down the D-type optical fiber after heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610852611.8A CN107870039A (en) | 2016-09-27 | 2016-09-27 | A kind of Fourier transform spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610852611.8A CN107870039A (en) | 2016-09-27 | 2016-09-27 | A kind of Fourier transform spectrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107870039A true CN107870039A (en) | 2018-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610852611.8A Pending CN107870039A (en) | 2016-09-27 | 2016-09-27 | A kind of Fourier transform spectrometer |
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| CN (1) | CN107870039A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030039448A1 (en) * | 2001-08-15 | 2003-02-27 | Thomas Hua Diem Ting | Method and apparatus for tuning an optical device |
| CN101000392A (en) * | 2006-12-28 | 2007-07-18 | 暨南大学 | Full optical fibre thermal-optical type variable light attenuator and its manufacturing method |
| CN101477228A (en) * | 2009-01-05 | 2009-07-08 | 东南大学 | Low-crosstalk organic polymer waveguide optical switch |
| CN202420580U (en) * | 2012-01-19 | 2012-09-05 | 浙江省计量科学研究院 | Hot-wire flow sensor based on fiber gratings |
| CN103791957A (en) * | 2014-03-03 | 2014-05-14 | 中国计量学院 | Fiber flow sensor based on metal-film-coated and long-period fiber bragg gratings |
| CN204964062U (en) * | 2015-09-29 | 2016-01-13 | 哈尔滨理工大学 | Temperature sensing experimental apparatus based on mach -Zehnder interferes |
-
2016
- 2016-09-27 CN CN201610852611.8A patent/CN107870039A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030039448A1 (en) * | 2001-08-15 | 2003-02-27 | Thomas Hua Diem Ting | Method and apparatus for tuning an optical device |
| CN101000392A (en) * | 2006-12-28 | 2007-07-18 | 暨南大学 | Full optical fibre thermal-optical type variable light attenuator and its manufacturing method |
| CN101477228A (en) * | 2009-01-05 | 2009-07-08 | 东南大学 | Low-crosstalk organic polymer waveguide optical switch |
| CN202420580U (en) * | 2012-01-19 | 2012-09-05 | 浙江省计量科学研究院 | Hot-wire flow sensor based on fiber gratings |
| CN103791957A (en) * | 2014-03-03 | 2014-05-14 | 中国计量学院 | Fiber flow sensor based on metal-film-coated and long-period fiber bragg gratings |
| CN204964062U (en) * | 2015-09-29 | 2016-01-13 | 哈尔滨理工大学 | Temperature sensing experimental apparatus based on mach -Zehnder interferes |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180403 |
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