CN206710764U - Device caused by one kind cascade super continuous spectrums - Google Patents
Device caused by one kind cascade super continuous spectrums Download PDFInfo
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- CN206710764U CN206710764U CN201720431313.1U CN201720431313U CN206710764U CN 206710764 U CN206710764 U CN 206710764U CN 201720431313 U CN201720431313 U CN 201720431313U CN 206710764 U CN206710764 U CN 206710764U
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- continuous spectrums
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Abstract
Device caused by one kind cascade super continuous spectrums; including the pumping source for exporting pump light, fibre optic isolater, power amplifier, fusion point protection module, high concentration germanium-doped silica fiber, fiber optic splitter, the first spectrometer, prism coupler, highly nonlinear optical fiber, collimation lens, the second spectrometer and middle infrared beam splitter are disposed with the right side of pump light emergent light axis horizontal direction；The utility model is using super continuum source as second level pumping source, form the cascaded pump of two-stage pumping source, infrared super continuous spectrums in ultra wide band can be produced, it is and simple in construction, small volume, manufacturing process difficulty and production cost are reduced, can be applied to the fields such as spectral measurement, medical treatment and military affairs.
Description
Technical field
The utility model belongs to nonlinear optics and ultra-short pulse laser technical field, and in particular to cascades super connect to one kind
Device caused by continuous spectrum.
Background technology
When super continuous spectrums refer to that ultrashort pulse is transmitted in nonlinear dielectric, dispersion and Various Complex due to medium
Nonlinear effect collective effect, new frequency content is caused to produce so that spectrum is broadened when ultrashort pulse is transmitted in a fiber
Phenomenon.The super continuum source characteristic such as have ultra-wide frequency spectrum, high brightness and height relevant, and middle infrared band be covered with it is numerous
Atom and molecule characteristic absorpting spectruming line, while cover very important air transparent window, therefore in biomedical, light
The various fields such as communication, environmental monitoring, spectral measurement and military affairs have a wide range of applications value.Photonic crystal fiber and Gao Fei
The appearance of linear soft glass optical fiber, the flow of research of infrared super continuous spectrums in being greatly promoted.In recent years, the soft glass of high non-linearity
Glass optical fiber has obtained rapid development, chalcogenide fiber be even more due to its higher nonlinear factor and it is good in infrared transmission
Rate, perfect optics medium caused by infrared super continuous spectrums in turning into, but because its zero-dispersion wavelength is more than 2 μm, it is to pumping
The requirement of light source is difficult to meet infrared super continuous spectrums in being produced by using the method for two sections of optical fiber cascades, both solve pump
The problem of Pu light source, at the same can obtain it is more broadband in infrared super continuous spectrums.
The content of the invention
Technical problem to be solved in the utility model is to overcome existing super continuous spectrums generation device deficiency, provides one kind
Device caused by the big a kind of cascade super continuous spectrums of reasonable in design, simple in construction, small volume, wavelength broadening scope.
Solving the technical scheme that above-mentioned technical problem uses is：It is disposed with the right side of pump light emergent light axis horizontal direction
Fibre optic isolater, power amplifier, fusion point protection module, high concentration germanium-doped silica fiber, fiber optic splitter, the first spectrum
Instrument, prism coupler, highly nonlinear optical fiber, collimation lens, the second spectrometer and middle infrared beam splitter；
Described fusion point protection module is used to prevent fusion point from falling upper dust increase loss；
Described high concentration germanium-doped silica fiber is used to produce first paragraph super continuum source；
Described fiber optic splitter is used to be detected 1% output of first paragraph super continuous spectrums into the first spectrometer,
Remaining super continuum source is by prism coupler as second level pumping source；
Described highly nonlinear optical fiber is used to produce infrared super continuous spectrums in second segment；
Described collimation lens is used to be collimated infrared super continuous spectrums in the broadband of highly nonlinear optical fiber output and defeated
Go out；
Described middle infrared beam splitter is used to the super continuum source of collimation lens output separating 1% output into second
Spectrometer detects, and remaining super continuum light spectrum source directly exports.
Pumping source of the present utility model is the erbium doped fiber laser of 1.55 mum wavelengths, and laser wavelength is mixed in high concentration
The anomalous dispersion region of germanium silica fibre and nearly zero-dispersion wavelength.
The zero-dispersion wavelength of high concentration germanium-doped silica fiber of the present utility model is 1.3 μm.
Highly nonlinear optical fiber of the present utility model is micro-structural chalcogenide fiber.
The utility model prism coupler is GaF2In infrared NA matched lenses.
Due to the utility model employ be disposed with the right side of pump light emergent light axis horizontal direction fibre optic isolater,
Power amplifier, fusion point protection module, high concentration germanium-doped silica fiber, fiber optic splitter, the first spectrometer, Lens Coupling
Device, highly nonlinear optical fiber, collimation lens, the second spectrometer and middle infrared beam splitter, the laser exported by power amplifier enter
Enter high concentration germanium-doped silica fiber and produce first paragraph super continuum source, due to high concentration germanium-doped silica fiber nonlinear factor ratio
Common silica fibre is much larger, and zero-dispersion wavelength is 1.3 μm, can realize that low-loss couples with common silica fibre, in generation
The wavelength broadening scope of infrared super continuous spectrums is 1 μm~4 μm, and as second level pump light source, it is accurate by collimation lens
Straight second level pump light source enters highly nonlinear optical fiber, due to causing output spectrum to obtain greatly using highly nonlinear optical fiber
Broadening, therefore produce infrared super continuous spectrums in second segment, the utility model using super continuum source as second level pumping source,
The cascaded pump of two-stage pumping source is formed, infrared super continuous spectrums in ultra wide band can be produced, and simple in construction, small volume, drop
Low manufacturing process difficulty and production cost, can be applied to the fields such as spectral measurement, medical treatment and military affairs.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is through first paragraph super continuum source caused by high concentration germanium-doped silica fiber in the utility model embodiment.
Fig. 3 is through infrared super continuous spectrums light in second segment broadband caused by highly nonlinear optical fiber in the utility model embodiment
Source.
In figure：1st, pumping source；2nd, fibre optic isolater；3rd, power amplifier；4th, fusion point protection module；5th, high concentration mixes germanium
Silica fibre；6th, fiber optic splitter；7th, the first spectrometer；8th, prism coupler；9th, highly nonlinear optical fiber；10th, collimation lens；
11st, the second spectrometer；12nd, middle infrared beam splitter；3-1, semiconductor laser；3-2, optical-fiber bundling device；3-3, gain fibre.
Embodiment
The utility model is described in further details with reference to the accompanying drawings and examples, but the utility model is not limited to this
A little embodiments.
Embodiment 1
In Fig. 1, device caused by a kind of cascade super continuous spectrums of the utility model, including for exporting the pumping of pump light
Source 1, the pumping source 1 of the present embodiment are the erbium doped fiber laser of 1.55 mum wavelengths, and laser wavelength is in high concentration and mixes germanite
The anomalous dispersion region of English optical fiber 5 and nearly zero-dispersion wavelength, can be with the zero-dispersion wavelength of high concentration germanium-doped silica fiber 5 preferably
Matching, so as to produce super continuum light spectrum.Fibre optic isolater 2, power are disposed with the right side of the emergent light axis horizontal direction of pump light 1
Amplifier 3, fusion point protection module 4, high concentration germanium-doped silica fiber 5, fiber optic splitter 6, the first spectrometer 7, Lens Coupling
Device 8, highly nonlinear optical fiber 9, collimation lens 10, the second spectrometer 11 and middle infrared beam splitter 12；Fibre optic isolater 2 eliminates backward
Additional noise caused by transmission light can prevent the laser reflection after power amplification from causing to damage to backing system simultaneously, by optical fiber
The laser ingoing power amplifier 3 of isolator 2 carries out power amplification and exported, and described power amplifier 3 swashs including semiconductor
Light device 3-1, optical-fiber bundling device 3-2 and gain fibre 3-3, optical-fiber bundling device is disposed with the right side of semiconductor laser 3-1
3-2 and gain fibre 3-3, gain fibre 3-3 are rear-earth-doped doubly clad optical fibers, the laser exported by power amplifier 3
Into high concentration germanium-doped silica fiber 5, described high concentration germanium-doped silica fiber 5 is used to produce first paragraph super continuum source,
Its nonlinear factor is more much larger than common silica fibre, and zero-dispersion wavelength is 1.3 μm, can realize low damage with common silica fibre
Consumption coupling, the wavelength broadening scope of infrared super continuous spectrums is 1 μm~4 μm in generation, and highly concentrated as pump light source, process
The laser that degree germanium-doped silica fiber 5 couples enters fiber optic splitter 6, and described fiber optic splitter 6 is used for first paragraph is super continuous
1% output of spectrum is detected into the first spectrometer 7, and Fig. 2 mixes germanite English light for what the first spectrometer 7 detected through high concentration
First paragraph super continuum source caused by fibre 5, remaining super continuum source are used as second level pumping by prism coupler 8
Source, the prism coupler 8 are GaF2In infrared NA matched lenses, general single mode fiber and highly nonlinear optical fiber 9 is realized coupling
Close；The pumping source of outgoing through prism coupler 8 enters highly nonlinear optical fiber 9, and described highly nonlinear optical fiber 9 is micro-structural sulphur
Compound optical fiber, high nonlinear coefficient based on micro-structural chalcogenide fiber and good middle infrared transmittivity, for producing the
Infrared super continuous spectrums in two sections；The laser being emitted through highly nonlinear optical fiber 9 enters collimation lens 10, and collimation lens 10 is used for height
Infrared super continuous spectrums are collimated and exported in the broadband of nonlinear optical fiber output；During the laser that collimated lens 10 export enters
Infrared beam splitter 11, infrared beam splitting 11 by the super continuum source that collimation lens 10 exports for separating 1% output in described
Detected into the second spectrometer 12, Fig. 3 be the second spectrometer 12 detect through second segment broadband caused by highly nonlinear optical fiber 9
In infrared super continuum source, remaining super continuum light spectrum source directly export, the present embodiment is arranged at gain fibre 3-3 and high concentration
The fusion point protection module 4 between germanite optical fiber 5 is mixed to be used to prevent gain fibre 3-3 and high concentration from mixing the fusion point of germanite optical fiber 5
Fall upper dust increase loss.
Operation principle of the present utility model is as follows：
Using the device of the utility model embodiment 1, the laser that pumping source 1 exports is transferred to after fibre optic isolater 2
Power amplifier 3, carry out power amplification through power amplifier 3 and export, by the laser that power amplifier 3 exports by entering
High concentration germanium-doped silica fiber 5 produces first paragraph super continuum source, afterwards into fiber optic splitter 6 by first paragraph super continuous spectrums
1% output detected into the first spectrometer 7, remaining super continuum source is used as the second level by prism coupler 8
Pumping source, second level pumping source enter highly nonlinear optical fiber 9 and produce infrared super continuous spectrums in second segment；Enter collimation lens afterwards
10 are collimated and are exported；Infrared beam splitter 11 during the laser that collimated lens 10 export enters, in infrared beam splitting 11 will collimate
The super continuum source that lens 10 export separates 1% output and detected into the second spectrometer 12, and remaining super continuum light spectrum source is direct
Output.
Claims (5)
1. device caused by one kind cascade super continuous spectrums, including for exporting the pumping source of pump light, it is characterised in that：Pump light
Fibre optic isolater, power amplifier, fusion point protection module, high concentration, which are disposed with, on the right side of emergent light axis horizontal direction mixes germanium
Silica fibre, fiber optic splitter, the first spectrometer, prism coupler, highly nonlinear optical fiber, collimation lens, the second spectrometer and
Middle infrared beam splitter；
Described fusion point protection module is used to prevent fusion point from falling upper dust increase loss；
Described high concentration germanium-doped silica fiber is used to produce first paragraph super continuum source；
Described fiber optic splitter is used to be detected 1% output of first paragraph super continuous spectrums into the first spectrometer, remaining
Super continuum source by prism coupler as second level pumping source；
Described highly nonlinear optical fiber is used to produce infrared super continuous spectrums in second segment；
Described collimation lens is used to infrared super continuous spectrums in the broadband of highly nonlinear optical fiber output are collimated and exported；
Described middle infrared beam splitter enters the second spectrum for the super continuum source of collimation lens output to be separated into 1% output
Instrument detects, and remaining super continuum light spectrum source directly exports.
2. device caused by a kind of cascade super continuous spectrums according to claim 1, it is characterised in that：Described pumping source is
The erbium doped fiber laser of 1.55 mum wavelengths, laser wavelength are in the anomalous dispersion region of high concentration germanium-doped silica fiber and nearly zero
Dispersion wavelength.
3. device caused by a kind of cascade super continuous spectrums according to claim 1, it is characterised in that：Described high concentration is mixed
The zero-dispersion wavelength of germanium silica fibre is 1.3 μm.
4. device caused by a kind of cascade super continuous spectrums according to claim 1, it is characterised in that：Described high non-linearity
Optical fiber is micro-structural chalcogenide fiber.
5. device caused by a kind of cascade super continuous spectrums according to claim 1, it is characterised in that：The prism coupler
For GaF2In infrared NA matched lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720431313.1U CN206710764U (en) | 2017-04-20 | 2017-04-20 | Device caused by one kind cascade super continuous spectrums |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720431313.1U CN206710764U (en) | 2017-04-20 | 2017-04-20 | Device caused by one kind cascade super continuous spectrums |
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| CN206710764U true CN206710764U (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720431313.1U Expired - Fee Related CN206710764U (en) | 2017-04-20 | 2017-04-20 | Device caused by one kind cascade super continuous spectrums |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842762A (en) * | 2017-04-20 | 2017-06-13 | 陕西师范大学 | It is a kind of to cascade the device that super continuous spectrums are produced |
-
2017
- 2017-04-20 CN CN201720431313.1U patent/CN206710764U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842762A (en) * | 2017-04-20 | 2017-06-13 | 陕西师范大学 | It is a kind of to cascade the device that super continuous spectrums are produced |
| CN106842762B (en) * | 2017-04-20 | 2022-12-06 | 陕西师范大学 | Device for generating cascade supercontinuum |
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Granted publication date: 20171205 Termination date: 20210420 |