CN208862360U - Can laser power monitoring optical-fiber bundling device - Google Patents
Can laser power monitoring optical-fiber bundling device Download PDFInfo
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- CN208862360U CN208862360U CN201821604663.4U CN201821604663U CN208862360U CN 208862360 U CN208862360 U CN 208862360U CN 201821604663 U CN201821604663 U CN 201821604663U CN 208862360 U CN208862360 U CN 208862360U
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Abstract
The utility model embodiment provide it is a kind of can laser power monitoring optical-fiber bundling device.Wherein, can laser power monitoring optical-fiber bundling device include fiber optic bundle and coupling monitor, coupling monitor is formed by output optical fibre and monitoring optical fiber fused tapering, and an end face of fiber optic bundle and an end face welding of output optical fibre, the one end for monitoring optical fiber is fixedly connected with output power monitoring device.With tradition there is the optical fiber laser of power monitoring function to need to be arranged eyeglass and the biggish power monitoring devices of photosensitive area, leads to complicated integral structure, volume is big, and stability difference is compared.Optical-fiber bundling device provided by the embodiment of the utility model is made of fiber optic bundle and coupling monitor, wherein coupling monitor is formed by output optical fibre and monitoring optical fiber fused tapering, monitors output power size using the output power monitoring device of monitoring optical fiber one end setting.It does not need that eyeglass is arranged on output light path.Have the characteristics that structure is simple, small in size, stability is high.
Description
Technical field
The utility model embodiment is related to technical field of optical fiber, more particularly to it is a kind of can laser power monitoring optical-fiber bundling
Device.
Background technique
Optical fiber laser is a kind of structure through gathering, and stability is high, and the good new laser of thermal diffusivity has been widely used in
The fields such as industry, medical treatment, national defence.It is higher and higher to optical fiber laser demanded power output with the development of technique for applying.Due to
The influence of pumping tube power density, optical fiber damage threshold etc., single mode fiber laser output power have the upper limit.Pass through
Optical-fiber bundling device is to realize that laser output power promotes most one of direct, most efficient method.
Current most of optical fiber lasers do not have the function of power monitoring, and a small number of optical fiber lasers have power monitoring
Function, the method for realizing power monitoring mainly use light-splitting method, the eyeglass of a piece of big splitting ratio are placed on output light path, greatly
Fraction of laser light can penetrate eyeglass normal transmission, and sub-fraction laser is reflected in lens surface.Power is set on reflected light path
Monitoring device monitors laser output power in real time.This method being monitored using space optics, due to needing to adjust and admittedly
Horizontal glass piece, and the biggish power monitoring devices of photosensitive area are needed, therefore, complicated integral structure, volume is big, and stability is poor.
Utility model content
For the power monitoring devices of traditional fiber bundling device, structure is complicated, and volume is big, the defect of stability difference.This is practical
New embodiment provide it is a kind of can laser power monitoring optical-fiber bundling device.
The utility model embodiment provide it is a kind of can laser power monitoring optical-fiber bundling device, including fiber optic bundle and coupling prison
Control device, the coupling monitor by output optical fibre and monitor optical fiber fused tapering formed, an end face of the fiber optic bundle with it is described
One end of one end face welding of output optical fibre, the monitoring optical fiber is fixedly connected with output power monitoring device.
Preferably, one end of the monitoring optical fiber is fixedly connected with output power monitoring device, described to monitor the another of optical fiber
One end is fixedly connected with feedback power monitoring device.
Preferably, the other end of an end face of the output optical fibre and the fiber optic bundle welding, the output optical fibre is molten
Connect quartz crystal.
Preferably, the middle part welding at the middle part of the output optical fibre and the monitoring optical fiber.
Preferably, the outer diameter of the fiber optic bundle and the cladding diameter of the output optical fibre match.
Preferably, the feedback power monitoring device includes alarm module, and the alarm module is used to supervise when feedback power
When the feedback power that control device monitoring arrives is more than the first predetermined power threshold value, alarm signal is issued.
With tradition there is the optical fiber laser of power monitoring function to need to be arranged eyeglass and the biggish power of photosensitive area
Monitoring device leads to complicated integral structure, and volume is big, and stability difference is compared.Optical-fiber bundling provided by the embodiment of the utility model
Device is made of fiber optic bundle and coupling monitor, wherein coupling monitor is formed by output optical fibre and monitoring optical fiber fused tapering, benefit
Output power size is monitored with the output power monitoring device of monitoring optical fiber one end setting.It does not need to be arranged on output light path
Eyeglass.Have the characteristics that structure is simple, small in size, stability is high.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 be according to it is provided by the embodiment of the utility model can laser power monitoring optical-fiber bundling device structural representation
Figure；
Fig. 2 is the structural schematic diagram according to fiber optic bundle provided by the embodiment of the utility model；
Fig. 3 is the preparation flow schematic diagram according to coupling monitor provided by the embodiment of the utility model；
Fig. 4 be according to it is provided by the embodiment of the utility model can laser power monitoring optical-fiber bundling device preparation method stream
Journey schematic diagram；
In figure, 11- input light fiber；12- fiber optic bundle；13- couples monitor；14- feedback power monitoring device；15- is defeated
Power monitor device out；16- output optical fibre；17- quartz crystal；18- monitors optical fiber；
33- sticking part；34- laser light source；35- power meter.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Also, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.Term " on ", "lower" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construction
And operation, therefore should not be understood as limiting the present invention.Unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
Fig. 1 be according to it is provided by the embodiment of the utility model can laser power monitoring optical-fiber bundling device structural representation
Figure.Referring to Fig.1, which includes fiber optic bundle 12 and coupling monitor 13, and the coupling monitor 13 is by output optical fibre
16 form with monitoring 18 fused biconical taper of optical fiber, an end face welding of an end face of the fiber optic bundle 12 and the output optical fibre 16,
One end of the monitoring optical fiber 18 is fixedly connected with output power monitoring device 15.
Fig. 2 is the structural schematic diagram according to fiber optic bundle provided by the embodiment of the utility model, referring to Figures 1 and 2, fiber optic bundle
12 be to be fused together to be made by more input light fibers 11, in the manufacturing process of fiber optic bundle 12, is ground respectively first each
Then the abradant surface of each input light fiber 11 is bonded by input light fiber 11, make more input light fibers 11 molten using heat source
Melt and fiber optic bundle 12 is made together.The heat source that can be used includes electrode, oxyhydrogen flame, graphite silk or laser.Can specifically it lead to
It crosses electrode discharge, oxyhydrogen flame heating, graphite heating or the mode of laser heating to heat more input light fibers 11, shape
At fiber optic bundle 12.
Fig. 3 is referring to Fig.1 and to be schemed according to the preparation flow schematic diagram of coupling monitor provided by the embodiment of the utility model
3, coupling monitor 13 is formed by output optical fibre 16 and monitoring 18 fused biconical taper of optical fiber, by the middle part of output optical fibre 16 and monitoring light
The middle part fitting of fibre 18 is arranged power meter 35 in one end of the monitoring optical fiber 18, accesses output in one end of output optical fibre 16
Power is P1Laser light source 34；Heating is carried out in the sticking part 33 of output optical fibre 16 and monitoring optical fiber 18 and draws cone, works as power meter
35 reading reaches the second predetermined power threshold value P2When, stop heating and draws cone.The splitting ratio M of the coupling monitor 13 made at this time
=P1/P2.Wherein, splitting ratio refers to the ratio of the total Output optical power of optical power Zhan of a certain output end output.Divide in the present embodiment
Light ratio M is 1000:1, and output optical fibre 16 transmits most power, and only 0.1% laser transmits in monitoring optical fiber 18.It can
To adjust splitting ratio according to the performance number monitoring range of output power monitoring device 15.Splitting ratio can be 100:1,2000:1
Or other values, herein with no restrictions.
In the present embodiment, one end of monitoring optical fiber 18 connects output power monitoring device 15, is monitored and is filled according to output power
Set the performance number P of 15 monitorings acquisition15With splitting ratio M, laser output power P can be calculated0=M*P15。
It should be noted that having the function of the optical fiber laser of power monitoring at present, the method master of power monitoring is realized
Optical spectroscopy is used, such as the eyeglass of a piece of big splitting ratio is set on output light path, most of laser can be through eyeglass just
Often transmission, sub-fraction laser are reflected in lens surface, and power monitoring devices are arranged on reflected light path, and real time monitoring laser is defeated
Power out.This method needs to adjust and fixing len, and needs the biggish power monitoring devices of photosensitive area, results in whole
Structure is complicated for body, and volume is big, and stability is poor.In addition, eyeglass needs to have higher in the application of high-capacity optical fiber laser
Damage and cleanliness, made higher requirement eyeglass material, Coating Materials, sealing structure etc., so that cost increases.
And it is provided in this embodiment can laser power monitoring optical-fiber bundling device, optical-fiber bundling device by fiber optic bundle 12 and coupling monitor 13
It constitutes, wherein coupling monitor 13 is formed by output optical fibre 16 and monitoring 18 fused biconical taper of optical fiber, utilizes monitoring 18 one end of optical fiber
The output power monitoring device 15 of setting monitors output power size.It does not need that eyeglass is arranged on output light path.With knot
Simple, small in size, at low cost, stability the is high advantage of structure.
With tradition there is the optical fiber laser of power monitoring function to need to be arranged eyeglass and the biggish power of photosensitive area
Monitoring device leads to complicated integral structure, and volume is big, and stability difference is compared.Optical-fiber bundling provided by the embodiment of the utility model
Device is made of fiber optic bundle and coupling monitor, wherein coupling monitor is formed by output optical fibre and monitoring optical fiber fused tapering, benefit
Output power size is monitored with the output power monitoring device of monitoring optical fiber one end setting.It does not need to be arranged on output light path
Eyeglass.Have the characteristics that structure is simple, small in size, stability is high.
On the basis of the above embodiments, one end of the monitoring optical fiber 18 is fixedly connected with output power monitoring device
15, the other end of the monitoring optical fiber 18 is fixedly connected with feedback power monitoring device 14.
Referring to Figure 1 and Figure 3, the one end for monitoring optical fiber 18 is fixedly connected with output power monitoring device 15, monitors optical fiber 18
The other end be also connected with feedback power monitoring device 14.During actual monitoring, in order to monitor feedback optical power value, supervising
The end face for controlling optical fiber 18 connects feedback power monitoring device 14, the performance number obtained according to the monitoring of feedback power monitoring device 14
P14With splitting ratio M, Laser feedback power P can be calculatedI=M*P14。
The present embodiment is separately connected output power monitoring device and feedback power monitoring device at the both ends of monitoring optical fiber, reaches
To laser output power and Laser feedback power is monitored simultaneously, realize to optical-fiber bundling device more fully power monitoring.
On the basis of the various embodiments described above, an end face of the output optical fibre 16 and 12 welding of fiber optic bundle are described
The other end welding quartz crystal 17 of output optical fibre 16.
Referring to Fig.1, an end face of output optical fibre 16 and 12 welding of fiber optic bundle, the other end of output optical fibre 16 are also molten
It is connected to quartz crystal 17.The chemical component of quartz crystal is SiO2, the oxide mineral of crystal category trigonal system, i.e. low quartz
(a- quartz), is that a most wide mineral species are distributed in quartzy race's mineral.Quartz crystal has excellent mechanical property, electricity special
Property and temperature characterisitic.By the end face welding quartz crystal 17 in output optical fibre 16, it is capable of increasing the damage of 16 end face of output optical fibre
Hurt threshold value.The power that the damage threshold of fiber end face also directly affects optical-fiber bundling device improves.The present embodiment passes through in output light
Fine end face welding quartz crystal 17, increases the damage threshold of output optical fibre end face, to improve laser power.
On the basis of the various embodiments described above, the middle part of the middle part of the output optical fibre 16 and the monitoring optical fiber 18 is molten
It connects.Referring to Fig.1, the middle part of output optical fibre 16 is bonded with the middle part of monitoring optical fiber 18 first, in output optical fibre 16 and monitoring light
The sticking part 33 of fibre 18 carries out heating and cone is drawn to obtain coupling monitor 13.
On the basis of the various embodiments described above, the cladding diameter phase of the outer diameter of the fiber optic bundle 12 and the output optical fibre 16
Matching.Referring to Fig.1, the outer diameter of fiber optic bundle 12 and the cladding diameter of output optical fibre 16 match, so as to the smooth welding of the two.
On the basis of the various embodiments described above, the feedback power monitoring device 14 includes alarm module, the alarm mould
Block is used for when the feedback power that feedback power monitoring device 14 monitors is more than the first predetermined power threshold value, issues alarm letter
Number.
Specifically, it when the feedback power that feedback power monitoring device 14 monitors is more than the first predetermined power threshold value, accuses
Alert module issues alarm signal to Laser Control System and checks processing optical path so that related personnel closes laser in time, avoid
Laser is caused to damage, improves the safety of optical-fiber bundling device.
Fig. 4 be according to it is provided by the embodiment of the utility model can laser power monitoring optical-fiber bundling device preparation method stream
Journey schematic diagram, referring to Fig.1, Fig. 3 and Fig. 4, can the preparation method of optical-fiber bundling device of laser power monitoring include:
401, the middle part of output optical fibre 16 is bonded with the middle part of monitoring optical fiber 18, is set in one end of the monitoring optical fiber 18
Power meter 35 is set, accesses laser light source 34 in one end of the output optical fibre 16.
Firstly, the central region of grinding output optical fibre 16 and the central region of monitoring optical fiber 18, and by 16 He of output optical fibre
Monitor the abradant surface fitting of optical fiber 18.Referring to Fig.1, power meter 35 is set in one end of the monitoring optical fiber 18, in output optical fibre
16 one end access output power is P1Laser light source 34.
402, heating is carried out in the sticking part 33 of the output optical fibre 16 and monitoring optical fiber 18 and draws cone, when the reading of power meter 35
When number reaches the second predetermined power threshold value, stops heating and draw cone.
Specifically, referring to Figure 1 and Figure 3, the middle part of output optical fibre 16 is bonded with the middle part of monitoring optical fiber 18, in the prison
Power meter 35 is arranged in the one end for controlling optical fiber 18, and in one end of output optical fibre 16, access output power is P1Laser light source 34；?
The sticking part 33 of output optical fibre 16 and monitoring optical fiber 18 carries out heating and draws cone, when the reading of power meter 35 reaches the second predetermined power
Threshold value P2When, stop heating and draws cone.The splitting ratio M=P of the coupling monitor 13 made at this time1/P2.Wherein, splitting ratio refers to certain
The ratio of the total Output optical power of optical power Zhan of one output end output.Splitting ratio M is 1000:1, output optical fibre 16 in the present embodiment
Most power are transmitted, only 0.1% laser transmits in monitoring optical fiber 18.It can be according to output power monitoring device 15
Performance number monitoring range adjust splitting ratio.Splitting ratio can be 100:1,2000:1 or other values, herein with no restrictions.
403, output power monitoring device 15 is connected in one end of the monitoring optical fiber 18, the other end accesses feedback power prison
Device 14 is controlled, by an end face welding of an end face of fiber optic bundle 12 well prepared in advance and the output optical fibre 16.
Referring to Fig.1, optical-fiber bundling device is connected and composed by fiber optic bundle 12 and the coupling melting of monitor 13.Fig. 2 is according to this reality
With the structural schematic diagram for the fiber optic bundle that new embodiment provides.Referring to Figures 1 and 2, fiber optic bundle 12 is by more input optical fibres
Dimension 11, which is fused together, to be made, and in the manufacturing process of fiber optic bundle 12, grinds each input light fiber 11 respectively first, then will be each
The abradant surface of input light fiber 11 is bonded, and using heat source more input light fibers 11 is fused together and fiber optic bundle 12 is made.
The heat source that can be used includes electrode, oxyhydrogen flame, graphite silk or laser.Can specifically be heated by electrode discharge, oxyhydrogen flame,
Graphite heating or the mode of laser heating heat more input light fibers 11, form fiber optic bundle 12.
In the present embodiment, one end of monitoring optical fiber 18 connects output power monitoring device 15, is monitored and is filled according to output power
Set the performance number P of 15 monitorings acquisition15With splitting ratio M, laser output power P can be calculated0=M*P15.Monitor optical fiber 18
The other end is also connected with feedback power monitoring device 14.During actual monitoring, in order to monitor feedback optical power value, monitoring
One end face of optical fiber 18 connects feedback power monitoring device 14, the performance number P obtained according to the monitoring of feedback power monitoring device 1414
With splitting ratio M, Laser feedback power P can be calculatedI=M*P14。
The present embodiment is separately connected output power monitoring device and feedback power monitoring device at the both ends of monitoring optical fiber, reaches
To laser output power and Laser feedback power is monitored simultaneously, realize to optical-fiber bundling device more fully power monitoring.
It should be noted that having the function of the optical fiber laser of power monitoring at present, the method master of power monitoring is realized
Optical spectroscopy is used, such as the eyeglass of a piece of big splitting ratio is set on output light path, most of laser can be through eyeglass just
Often transmission, sub-fraction laser are reflected in lens surface, and power monitoring devices are arranged on reflected light path, and real time monitoring laser is defeated
Power out.This method needs to adjust and fixing len, and needs the biggish power monitoring devices of photosensitive area, results in whole
Structure is complicated for body, and volume is big, and stability is poor.In addition, eyeglass needs to have higher in the application of high-capacity optical fiber laser
Damage and cleanliness, made higher requirement eyeglass material, Coating Materials, sealing structure etc., so that cost increases.
And it is provided in this embodiment can laser power monitoring optical-fiber bundling device, optical-fiber bundling device by fiber optic bundle 12 and coupling monitor 13
It constitutes, wherein coupling monitor 13 is formed by output optical fibre 16 and monitoring 18 fused biconical taper of optical fiber, utilizes monitoring 18 one end of optical fiber
The output power monitoring device 15 of setting monitors output power size.It does not need that eyeglass is arranged on output light path.With knot
Simple, small in size, at low cost, stability the is high advantage of structure.
On the basis of the various embodiments described above, can laser power monitoring optical-fiber bundling device preparation method further include:
One end face welding quartz crystal 17 of output optical fibre 16.
Referring to Fig.1, an end face of output optical fibre 16 and 12 welding of fiber optic bundle, the other end of output optical fibre 16 are also molten
It is connected to quartz crystal 17.The chemical component of quartz crystal is SiO2, the oxide mineral of crystal category trigonal system, i.e. low quartz
(a- quartz), is that a most wide mineral species are distributed in quartzy race's mineral.Quartz crystal has excellent mechanical property, electricity special
Property and temperature characterisitic.By the end face welding quartz crystal 17 in output optical fibre 16, it is capable of increasing the damage of 16 end face of output optical fibre
Hurt threshold value.The power that the damage threshold of fiber end face also directly affects optical-fiber bundling device improves.The present embodiment passes through in output light
The end face welding quartz crystal 17 of fibre 16 increases the damage threshold of 16 end face of output optical fibre, to improve laser power.
On the basis of the various embodiments described above, the cladding diameter phase of the outer diameter of the fiber optic bundle 12 and the output optical fibre 16
Matching.Referring to Fig.1, the outer diameter of fiber optic bundle 12 and the cladding diameter of output optical fibre 16 match, so as to the smooth welding of the two.
On the basis of the various embodiments described above, the feedback power monitoring device 14 includes alarm module, the alarm mould
Block is used for when the feedback power that feedback power monitoring device 14 monitors is more than the first predetermined power threshold value, issues alarm letter
Number.
Specifically, it when the feedback power that feedback power monitoring device 14 monitors is more than the first predetermined power threshold value, accuses
Alert module issues alarm signal to Laser Control System and checks processing optical path so that related personnel closes laser in time, avoid
Laser is caused to damage, improves the safety of optical-fiber bundling device.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (6)
1. one kind can laser power monitoring optical-fiber bundling device, which is characterized in that including fiber optic bundle and coupling monitor, the coupling
It closes monitor to be formed by output optical fibre and monitoring optical fiber fused tapering, an end face of the fiber optic bundle and the one of the output optical fibre
One end of end face welding, the monitoring optical fiber is fixedly connected with output power monitoring device.
2. it is according to claim 1 can laser power monitoring optical-fiber bundling device, which is characterized in that the monitoring optical fiber
One end is fixedly connected with output power monitoring device, and the other end of the monitoring optical fiber is fixedly connected with feedback power monitoring dress
It sets.
3. it is according to claim 1 can laser power monitoring optical-fiber bundling device, which is characterized in that the output optical fibre
One end face and the fiber optic bundle welding, the other end welding quartz crystal of the output optical fibre.
4. it is according to claim 1 can laser power monitoring optical-fiber bundling device, which is characterized in that the output optical fibre
The middle part welding at middle part and the monitoring optical fiber.
5. it is according to claim 1 can laser power monitoring optical-fiber bundling device, which is characterized in that the fiber optic bundle it is outer
The cladding diameter of diameter and the output optical fibre matches.
6. it is according to claim 2 can laser power monitoring optical-fiber bundling device, which is characterized in that feedback power prison
Controlling device includes alarm module, and the alarm module is used to when the feedback power that feedback power monitoring device monitors be more than first
When predetermined power threshold value, alarm signal is issued.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244806A (en) * | 2018-09-29 | 2019-01-18 | 武汉锐科光纤激光技术股份有限公司 | Can laser power monitoring optical-fiber bundling device and preparation method thereof |
| CN110429464A (en) * | 2019-07-19 | 2019-11-08 | 东莞理工学院 | A kind of superpower laser bundling device |
-
2018
- 2018-09-29 CN CN201821604663.4U patent/CN208862360U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244806A (en) * | 2018-09-29 | 2019-01-18 | 武汉锐科光纤激光技术股份有限公司 | Can laser power monitoring optical-fiber bundling device and preparation method thereof |
| CN110429464A (en) * | 2019-07-19 | 2019-11-08 | 东莞理工学院 | A kind of superpower laser bundling device |
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