CN207542559U - Pump light source and ASE light sources - Google Patents
Pump light source and ASE light sources Download PDFInfo
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- CN207542559U CN207542559U CN201720818771.0U CN201720818771U CN207542559U CN 207542559 U CN207542559 U CN 207542559U CN 201720818771 U CN201720818771 U CN 201720818771U CN 207542559 U CN207542559 U CN 207542559U
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Abstract
The utility model provides a kind of pump light source and ASE light sources, and wherein pump light source includes shell and is set to pump laser, lens, WDM filter discs and the fiber stub of the enclosure；The pump laser, lens and fiber stub are set in same optical axis, and the laser of the pump laser transmitting is made to be coupled into after the lens focus in the fiber stub；The fiber stub, through the shell wall of the shell, for reflecting or propagating the laser；The WDM filter discs, are set between the lens and the fiber stub, and with the optical axis in 45° angle, for laser described in transmission or reflection.Pump light source described in said program, by way of Space Coupling instead of script ASE light sources in pump laser and wavelength division multiplexer fused fiber splice mode, ensure that the light intensity and wavelength when laser reaches Er-doped fiber.
Description
Technical field
The utility model is related to fiber optic communication field more particularly to a kind of pump light source and ASE light sources.
Background technology
ASE (Amplified Spontaneous Emission, amplified spontaneous emission) light source is put based on Er-doped fiber
A kind of wide spectrum light source of big spontaneous radiation, output has the characteristics that mean wavelength stabilization, spectral width, output power are high, in light
It is widely applied in the fields such as fine gyro, fibre optical sensor and communication wdm system.
Er-doped fiber is a kind of Active Optical Fiber, is by adulterating a certain amount of trivalent erbium ion in glass mechanism and shape
Into.Erbium ion in optical fiber is very sensitive to the photon in 980nm or 1480nm wavelength lights, and can absorb its energy makes the energy of itself
Grade changes, and generates the amplified spontaneous emission light near 1550nm wavelength.
In general, as shown in Figure 1, ASE light source include pump laser 1, wavelength division multiplexer 2, Er-doped fiber 3 and light every
From device 4.Wherein, pump laser 1 sends out the laser of 980nm or 1480nm wavelength, and laser reaches after wavelength division multiplexer 2 to be mixed
Erbium optical fiber, the erbium ion in Er-doped fiber 3 generate the output light of 1550nm wavelength under the action of laser.According to pumping laser
The output light direction that the laser direction and Er-doped fiber 3 that device 1 is sent out are sent out, the structure of the ASE light sources can be divided into two kinds：
(1) to (SFP) export structure before one way：As shown in Figure 1, laser direction is identical with output light direction.
(2) backward (SPB) export structure of one way：As shown in Fig. 2, laser direction is opposite with output light direction.
On the basis of above-mentioned classification, if setting a speculum 5 in the structure of an ASE light source, it can be formed double
The ASE light sources of journey, correspondingly, structure can be divided into double-pass forward (DPF) export structure and double-pass backward (DPB) export structure,
As shown in Figure 3, Figure 4.
At present, the connection of light path is completed due to being fetched between each component of ASE light sources by optical fiber welding, is especially pumped
Fused fiber splice between laser and wavelength division multiplexer, laser easily cause the change of optical maser wavelength when passing through weld, make
Laser can not be absorbed after reaching Er-doped fiber by the erbium ion in Er-doped fiber, cause the unstable of Er-doped fiber output light.
Invention content
The utility model provides a kind of pump light source and ASE light sources, it is intended to which the pumping for solving ASE light sources in the prior art swashs
The problem of optical maser wavelength caused by fused fiber splice being used to change between light device and wavelength division multiplexer.
To solve the above problems, the utility model provides a kind of pump light source, including shell and it is set in the shell
Pump laser, lens, WDM filter discs and the fiber stub in portion；
The pump laser, lens and fiber stub are set in same optical axis, make the pump laser transmitting
Laser is coupled into after the lens focus in the fiber stub；
The fiber stub, through the shell wall of the shell, for reflecting or propagating the laser；
The WDM filter discs, are set between the lens and the fiber stub, and are used for the optical axis in 45° angle
Laser described in transmission or reflection.
Further, it in above-mentioned pump light source, further includes：
Light absorbing layer is set to along the reflected light travels direction of the WDM filter discs on the inner wall of the shell.
Further, it in above-mentioned pump light source, further includes：
First speculum is set to enclosure, for reflecting certain wave along the reflected light travels direction of the WDM filter discs
Long light makes the light of the specific wavelength be coupled into the fiber stub after WDM filter discs reflection again.
Further, it in above-mentioned pump light source, further includes：
First collimation lock pin, is set along the reflected light travels direction of the WDM filter discs, through the shell wall of the shell, uses
In the propagation reflected light.
Further, it in above-mentioned pump light source, further includes：
Second collimation lock pin, is set along the reflected light travels direction of the WDM filter discs, through the shell wall of the shell, uses
In the propagation reflected light；
Second speculum is set to housing exterior, for reflecting certain wave along the reflected light travels direction of the WDM filter discs
Long light.
Based on same inventive concept, the utility model also provides a kind of ASE light sources, including any one of claim 1-5 institutes
The pump light source stated, further includes Er-doped fiber and optoisolator, wherein：
The first end of the Er-doped fiber is connect by optical fiber with the fiber stub, second end by optical fiber with it is described
Optoisolator connects；Alternatively,
The first end of the Er-doped fiber is connect by optical fiber with the described first collimation lock pin；
One end of the optoisolator is connect by optical fiber with the fiber stub；Alternatively,
The first end of the Er-doped fiber connect by optical fiber with the described second collimation lock pin, second end by optical fiber and
The second speculum connection；
One end of the optoisolator is connect by optical fiber with the fiber stub.
The utility model provides a kind of pump light source and ASE light sources, and wherein pump light source includes shell and is set to described
Pump laser, lens, WDM filter discs and the fiber stub of enclosure, the laser that the pump laser is sent out gather through lens
It is defocused, then transmitted through WDM filter discs, in coupled into optical fibres lock pin, fiber stub one side fiber stub can propagate pump laser
On the other hand the laser sent out can also reflect the laser.Laser is after fiber stub reflects, the surface of arrival WDM filter discs, and
The surface of WDM filter discs is reflected.Pump light source described in said program, instead of script ASE by way of Space Coupling
The mode of pump laser and wavelength division multiplexer fused fiber splice in light source ensure that light intensity and wave when laser reaches Er-doped fiber
It is long.
Description of the drawings
Fig. 1 be one way before to export structure ASE light sources connection figure.
Fig. 2 be one way after to export structure ASE light sources connection figure.
Fig. 3 is the connection figure of the ASE light sources of double-pass forward export structure.
Fig. 4 is the connection figure of the ASE light sources of double-pass backward export structure.
Fig. 5 is the structure chart of pump light source described in the utility model embodiment.
Fig. 6 is to the connection figure of the ASE light sources of export structure, is shown before one way described in the utility model embodiment
For before one way to the structure of the pump light source of export structure ASE light sources.
Fig. 7 is the connection figure of the ASE light sources of double-pass forward export structure described in the utility model embodiment, is shown
For the structure of the pump light source of double-pass forward export structure ASE light sources.
Fig. 8 is to the connection figure of the ASE light sources of export structure, is shown after one way described in the utility model embodiment
For after one way to the structure of the pump light source of export structure ASE light sources.
Fig. 9 is the connection figure of the ASE light sources of double-pass backward export structure described in the utility model embodiment, is shown
For the structure of the pump light source of double-pass backward export structure ASE light sources.
Wherein, reference numeral is：
1- pump lasers；2- wavelength division multiplexers；3- Er-doped fibers；4- optoisolators；5- speculums；6- shells；7- is saturating
Mirror；8-WDM filter discs；9- fiber stubs；10- light absorbing layers；The first speculums of 11-；12- first collimates lock pin；13- second is collimated
Lock pin；The second speculums of 14-.
Specific embodiment
The utility model embodiment is further illustrated below in conjunction with attached drawing.It needs in the description of the present invention,
Bright is unless specifically defined or limited otherwise, term " installation ", " connected ", " connection " should be interpreted broadly, for example, can
To be to be fixedly connected or be detachably connected or be integrally connected；Can be mechanical connection or electrical connection；It can
It to be to be connected directly, can also be indirectly connected by intermediary, can be the connection of two component internals.For this field
For those of ordinary skill, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.
The utility model provides a kind of pump light source, as shown in figure 5, including shell 6 and the pumping being set to inside shell 6
Laser 1, lens 7, WDM filter discs 8 and fiber stub 9.Inside shell 6, the pump laser 1, lens 7 and fiber stub
9 are set in same optical axis, and the laser that pump laser 1 is launched is made to pass through after 7 optically focused of lens in coupled into optical fibres lock pin 9,
Form the Space Coupling of light path.And fiber stub 9 runs through the shell wall of shell 6, and WDM filter discs 8 are set to lens 7 and fiber stub
Between 9, and it is in 45° angle with optical axis.
Specifically, the laser that the pump laser 1 is sent out transmits after the focusing of lens 7, then through WDM filter discs 8, is coupled into
In fiber stub 9, on the one hand fiber stub 9 can propagate the laser that pump laser 1 is sent out, and on the other hand can also reflect this and swash
Light.Laser reaches the surface of WDM filter discs 8 after the reflection of fiber stub 9, and is reflected on the surface of WDM filter discs 8.Above-mentioned side
Pump light source described in case, instead of pump laser 1 and wavelength division multiplexer in script ASE light sources by way of Space Coupling
The mode of 2 fused fiber splices, ensure that laser reach Er-doped fiber 3 when light intensity and wavelength.
Further, the pump light source in said program need to have in the ASE light sources applied to different export structures into one
The adjustment of step.
For example, when before the pump light source described using the above scheme realizes the one way of ASE light sources to export structure, such as scheme
Shown in 6, the pump light source further includes light absorbing layer 10, reflected light travels side of the light absorbing layer 10 along the WDM filter discs 8
To being set on the inner wall of the shell 6.Other than being provided with the pump light source of light absorbing layer 10, to export structure before one way
ASE light sources further include Er-doped fiber 3 and optoisolator 4, and the first end of the Er-doped fiber 3 is connected by optical fiber and fiber stub 9
It connects, second end is connect by optical fiber with optoisolator 4.After the laser reaches Er-doped fiber 3 by fiber stub 9, er-doped
The output light that the output wavelength under the action of laser of optical fiber 3 is 1550nm.Output light is passed respectively along the both ends of Er-doped fiber 3
It broadcasts, reaches the surface of WDM filter discs 8 through fiber stub 9 along the output light that 3 first end of Er-doped fiber is propagated, and in WDM filter discs 8
Surface is reflected, and the output light reflected on 8 surface of WDM filter discs reaches light absorbing layer 10, and is absorbed by light absorbing layer 10,
To prevent the generation diffusing reflection on 6 inner wall of shell from interfering other light paths, the light absorbing layer 10 is also can absorb in 8 table of WDM filter discs
The laser that face is reflected；The output light propagated along 3 second end of Er-doped fiber exports after optoisolator 4, as ASE light sources
Output light source.
For another example when the pump light source realizes the double-pass forward export structure of ASE light sources using the above scheme, it is described
Pump light source further includes the first speculum 11, and first speculum 11 is set along the reflected light travels direction of the WDM filter discs 8
Inside the shell 6, for reflecting the light of specific wavelength, make the light of the specific wavelength again after the WDM filter discs 8 reflection
It is coupled into the fiber stub 9.Other than being provided with the pump light source of the first speculum 11, double-pass forward export structure
ASE light sources further include Er-doped fiber 3 and optoisolator 4, wherein the first end of the Er-doped fiber 3 passes through optical fiber and fiber stub
9 connections, second end are connect by optical fiber with optoisolator 4.After the laser reaches Er-doped fiber 3 by fiber stub 9, er-doped
The output light that the output wavelength under the action of laser of optical fiber 3 is 1550nm.Output light is passed respectively along the both ends of Er-doped fiber 3
It broadcasts, reaches the surface of WDM filter discs 8 through fiber stub 9 along the output light that 3 first end of Er-doped fiber is propagated, and in WDM filter discs 8
Surface is reflected, output light the first speculum 11 of arrival after reflection, and the outputs of 11 reflection 1550nm of the first speculum
Light, therefore the laser reflected on 8 surface of WDM filter discs will not reflect on the surface of the first speculum 11, it is anti-by first
The output light of the reflection of mirror 11 is penetrated again after the reflection of WDM filter discs 8 in coupled into optical fibres lock pin 9, and by Er-doped fiber 3 and optically isolated
It is exported after device 4 as the output light source of ASE light sources；The output light propagated along 3 second end of Er-doped fiber is defeated after optoisolator 4
Go out, the output light source as ASE light sources exports.
For another example when after the one way of the pump light source realization ASE light sources using the above scheme to export structure, it is described
Pump light source further includes the first collimation lock pin 12, the one the first reflected light travels of the collimation lock pin 12 along the WDM filter discs 8
Direction is set, through the shell wall of the shell 6, for propagating the reflected light.And it is removed after one way to the ASE light sources of export structure
Being provided with outside the pump light source of the first collimation lock pin 12 described in said program, further includes Er-doped fiber 3 and optoisolator
4, wherein the first end of the Er-doped fiber 3 is connect by optical fiber with the described first collimation lock pin 12, the one of the optoisolator 4
End is connect by optical fiber with the fiber stub 9.The laser reaches after the reflection of WDM filter discs 8 through the first collimation lock pin 12 to be mixed
Erbium optical fiber 3, the output light that the output wavelength under the action of laser of Er-doped fiber 3 is 1550nm.Output light is respectively along er-doped light
The both ends of fibre 3 are propagated, and reach the surface of WDM after the first collimation lock pin 12 along the output light that 3 first end of Er-doped fiber is propagated, and
It is coupled into fiber stub 9 after being reflected on the surface of WDM, and is tied after optoisolator 4 as after one way to output
The output light output of the ASE light sources of structure.
For another example when the pump light source realizes the double-pass backward export structure of ASE light sources using the above scheme, it is described
Pump light source further includes the second collimation lock pin 13 and the second speculum 14, and described second collimates lock pin 13 along the WDM filter discs 8
Reflected light travels direction is set, through the shell wall of the shell 6, for propagating the reflected light, 14 edge of the second speculum
The reflected light travels direction of the WDM filter discs 8 is set to outside shell 6, for reflecting the light of specific wavelength.And double-pass backward is defeated
Go out pump light source of the ASE light sources of structure in addition to being provided with the second collimation lock pin 13 and the second speculum 14 described in said program
Outside, Er-doped fiber 3 and optoisolator 4 are further included, wherein the first end of the Er-doped fiber 3 passes through optical fiber and the described second collimation
Lock pin 13 connects, and second end is connect by optical fiber with the second speculum 14, one end of the optoisolator 4 by optical fiber with it is described
Fiber stub 9 connects.The laser reaches Er-doped fiber 3, Er-doped fiber 3 after the reflection of WDM filter discs 8 through the second collimation lock pin 13
Output wavelength is the output light of 1550nm under the action of laser.Output light is propagated respectively along the both ends of Er-doped fiber 3, and edge is mixed
The output light that 3 first end of erbium optical fiber is propagated reaches the surface of WDM after the second collimation lock pin 13, and occurs instead on the surface of WDM
It penetrates in rear coupled into optical fibres lock pin 9, and the output light after optoisolator 4 as the ASE light sources of double-pass backward export structure
Output；Along the output light that 3 second end of Er-doped fiber is propagated after the reflection of the second speculum 14, collimated by Er-doped fiber 3, second
It is reflected after lock pin 13 on the surface of WDM filter discs 8, and in coupled into optical fibres lock pin 9, and with ASE light sources after optoisolator 4
Output light output.
ASE light sources are realized by above-mentioned pump light source, the process time of light path assembling can be greatlyd save, improve assembling effect
Rate, while the more convenient test for carrying out device performance.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (6)
1. a kind of pump light source, which is characterized in that including shell and be set to the pump laser of the enclosure, lens,
WDM filter discs and fiber stub；
The pump laser, lens and fiber stub are set in same optical axis, make the laser of the pump laser transmitting
It is coupled into after the lens focus in the fiber stub；
The fiber stub, through the shell wall of the shell, for reflecting or propagating the laser；
The WDM filter discs, are set between the lens and the fiber stub, and with the optical axis in 45° angle, for transmiting
Or the reflection laser.
2. pump light source according to claim 1, which is characterized in that further include：
Light absorbing layer is set to along the reflected light travels direction of the WDM filter discs on the inner wall of the shell.
3. pump light source according to claim 1, which is characterized in that further include：
First speculum is set to enclosure, for reflecting specific wavelength along the reflected light travels direction of the WDM filter discs
Light makes the light of the specific wavelength be coupled into the fiber stub after WDM filter discs reflection again.
4. pump light source according to claim 1, which is characterized in that further include：
First collimation lock pin, is set along the reflected light travels direction of the WDM filter discs, through the shell wall of the shell, for passing
Broadcast the reflected light.
5. pump light source according to claim 1, which is characterized in that further include：
Second collimation lock pin, is set along the reflected light travels direction of the WDM filter discs, through the shell wall of the shell, for passing
Broadcast the reflected light；
Second speculum is set to housing exterior, for reflecting specific wavelength along the reflected light travels direction of the WDM filter discs
Light.
6. a kind of ASE light sources, which is characterized in that including claim 1-5 any one of them pump light sources, further include er-doped light
Fine and optoisolator, wherein：
The first end of the Er-doped fiber is connect by optical fiber with the fiber stub, second end by optical fiber and the light every
It is connected from device；Alternatively,
The first end of the Er-doped fiber is connect by optical fiber with the first collimation lock pin；
One end of the optoisolator is connect by optical fiber with the fiber stub；Alternatively,
The first end of the Er-doped fiber is connect by optical fiber with the second collimation lock pin, and second end is reflected by optical fiber and second
Mirror connects；
One end of the optoisolator is connect by optical fiber with the fiber stub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720818771.0U CN207542559U (en) | 2017-07-07 | 2017-07-07 | Pump light source and ASE light sources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720818771.0U CN207542559U (en) | 2017-07-07 | 2017-07-07 | Pump light source and ASE light sources |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207542559U true CN207542559U (en) | 2018-06-26 |
Family
ID=62608154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720818771.0U Active CN207542559U (en) | 2017-07-07 | 2017-07-07 | Pump light source and ASE light sources |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207542559U (en) |
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2017
- 2017-07-07 CN CN201720818771.0U patent/CN207542559U/en active Active
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