CN105974534B - A kind of fiber coupling device - Google Patents
A kind of fiber coupling device Download PDFInfo
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- CN105974534B CN105974534B CN201610556274.8A CN201610556274A CN105974534B CN 105974534 B CN105974534 B CN 105974534B CN 201610556274 A CN201610556274 A CN 201610556274A CN 105974534 B CN105974534 B CN 105974534B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4213—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being polarisation selective optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a kind of fiber coupling device, the device includes：Pedestal, laser array, turn to optical element, convergent lens and optical fiber；Laser array is positioned on pedestal；Turn to the multiple laser that optical element exports laser array to turn to so that the direction of propagation of the multiple laser after steering is parallel to each other, and the distributed areas of multiple hot spots are rounded corresponding to multiple laser on the section of the direction of propagation；Multiple laser after steering is impinged perpendicularly on convergent lens, and convergent lens assembles multiple laser in coupled into optical fibres.This programme adjusts the spacing between the multiple laser of laser array output by turning to optical element, so that multiple laser it is even closer arrangement and the distributed areas of multiple hot spots are rounded on the section of the direction of propagation, again by convergent lens by multiple laser coupled into optical fibres, it has been sufficient filling with the space for the numerical aperture for meeting optical fiber on convergent lens, the numerical aperture of optical fiber is taken full advantage of, drastically increases optical coupling efficiency.
Description
Technical field
The present invention relates to laser technology field, more particularly to a kind of fiber coupling device.
Background technology
In the fiber coupling technique of existing multiple laser, the concentrated lens of multiple laser of multiple laser outputs close
Shu Hou, it is rectangular to close the distributed areas of multiple hot spots corresponding to the multiple laser after beam, has often only taken up on convergent lens full
Small portion in the region of the numerical aperture of sufficient optical fiber, it is impossible to make full use of the numerical aperture of optical fiber, entering light can be coupled
Fine laser limited amount, causes the waste of fiber numerical aperture, causes optical coupling efficiency relatively low.
The content of the invention
In view of the above problems, the invention provides a kind of fiber coupling device, to solve the above problems or at least partly
Ground solves the above problems.
According to one aspect of the present invention, there is provided a kind of fiber coupling device, the device include：Pedestal, laser battle array
Row, turn to optical element, convergent lens and optical fiber；
The laser array is positioned on the pedestal, and the laser array includes multiple rows of laser, often arranges laser
Device includes one or more lasers；
The multiple laser that the steering optical element exports to the laser array turns to so that more after steering
The Shu Jiguang direction of propagation is parallel to each other, and in the plane of the direction of propagation of the multiple laser after steering, multi beam swashs
The rounded arrangement in the distributed areas of multiple hot spots corresponding to light；
Multiple laser after steering is impinged perpendicularly on the convergent lens, and multiple laser is assembled coupling by the convergent lens
Close into the optical fiber.
Alternatively, in the multiple laser after the relay lens, swash corresponding to a branch of or multi beam for often arranging laser
Light forms a coplanar laser array, is separated by distance to a declared goal between the plane where two neighboring laser array.
Alternatively, each laser in the laser array is diode laser single tube, each diode laser
The a width of 100um-200um of bar of single tube, the wave-length coverage for exporting laser are 800nm-1100nm.
Alternatively, the core diameter of the optical fiber is 200um-400um, and numerical aperture is less than or equal to 0.22.
Alternatively, the steering optical element includes：Plane of reflection mirror, and/or, reflecting prism.
Alternatively, the convergent lens includes one or more lens.
Alternatively, the device further comprises：It is accurate corresponding to multiple fast axles of each laser in the laser array
Straight lens and multiple slow axis collimation lenses；
Fast axis collimation lens and slow axis are accurate corresponding to the laser process of each laser output in the laser array
After straight lens, incide on the steering optical element.
Alternatively, the device further comprises：To beam expander or shrink beam device；
The beam expander or shrink beam device are located between the slow axis collimation lens and the steering optical element, or, institute
Beam expander or shrink beam device are stated between the steering optical element and the convergent lens.
Alternatively, the device further comprises：Polarization beam combiner；
The polarization beam combiner is located between the slow axis collimation lens and the steering optical element, or, it is described inclined
The bundling device that shakes is between the steering optical element and the convergent lens.
Alternatively, the base interior is provided with water-cooling channel, is circulated with Cooling Water in water-cooling channel；
The stepped structure of pedestal, row's laser is placed on every grade of step of the pedestal, when row's laser
During including multiple lasers, direction of multiple lasers along step long side in row's laser is clapped in a row；
When the stepped structure of the pedestal, the laser propagation of each laser in laser array output to institute
It is identical to state the light path undergone on convergent lens.
From the foregoing, the multiple laser that technical scheme provided by the invention exports to laser array turns to, make
The direction of propagation of multiple laser after must turning to is parallel to each other, and in the flat of the direction of propagation of the multiple laser after steering
The distributed areas of multiple hot spots are rounded corresponding to multiple laser on face, then by convergent lens by the multiple laser meeting after steering
In poly- coupled into optical fibres, this programme has the advantages that：The more of laser array output are adjusted by turning to optical element
Spacing between Shu Jiguang so that the even closer arrangement of multiple laser, and it is corresponding to incide the multiple laser on convergent lens
Multiple hot spots distributed areas it is rounded, by multiple laser with approximate circle state on section after being assembled by convergent lens
In coupled into optical fibres, the space for the numerical aperture for meeting optical fiber on convergent lens has been sufficient filling with, has taken full advantage of the number of optical fiber
It is worth aperture, under equal conditions, the laser coupled that more multi-laser exports can be entered optical fiber, drastically increase fiber coupling
Efficiency.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention.
Brief description of the drawings
Figure 1A shows a kind of schematic diagram of according to embodiments of the present invention one fiber coupling device；
Figure 1B shows a kind of side view of according to embodiments of the present invention one fiber coupling device；
Fig. 1 C show a kind of top view of according to embodiments of the present invention one fiber coupling device；
Fig. 1 D show hot spot of the laser of according to embodiments of the present invention one laser array output on convergent lens
Schematic diagram；
Fig. 2A shows a kind of schematic diagram of according to embodiments of the present invention two fiber coupling device；
Fig. 2 B show a kind of side view of according to embodiments of the present invention two fiber coupling device；
Fig. 2 C show a kind of top view of according to embodiments of the present invention two fiber coupling device；
Fig. 3 A show a kind of schematic diagram of according to embodiments of the present invention three fiber coupling device；
Fig. 3 B show a kind of side view of according to embodiments of the present invention three fiber coupling device；
Fig. 3 C show a kind of top view of according to embodiments of the present invention three fiber coupling device；
Fig. 4 A show a kind of schematic diagram of according to embodiments of the present invention four fiber coupling device；
Fig. 4 B show a kind of side view of according to embodiments of the present invention four fiber coupling device；
Fig. 4 C show a kind of top view of according to embodiments of the present invention four fiber coupling device；
Fig. 4 D show hot spot of the laser of according to embodiments of the present invention four laser array output on convergent lens
Schematic diagram；
Fig. 5 A show a kind of schematic diagram of according to embodiments of the present invention five fiber coupling device；
Fig. 5 B show a kind of side view of according to embodiments of the present invention five fiber coupling device；
Fig. 5 C show a kind of top view of according to embodiments of the present invention five fiber coupling device；
Fig. 6 A show a kind of schematic diagram of according to embodiments of the present invention six fiber coupling device；
Fig. 6 B show a kind of side view of according to embodiments of the present invention six fiber coupling device；
Fig. 6 C show a kind of top view of according to embodiments of the present invention six fiber coupling device.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
X-axis, y-axis and z-axis are established, x-axis is transverse axis, and z-axis is the longitudinal axis, and y-axis is vertical pivot, forms right hand rectangular coordinate system in space
X-y-z, space beam merging apparatus provided by the invention and system are illustrated according to the right hand rectangular coordinate system in space, following
Embodiment in, the longitudinal axis correspond to laser beam quick shaft direction, transverse axis correspond to laser beam slow-axis direction.
Figure 1A shows a kind of schematic diagram of according to embodiments of the present invention one fiber coupling device, as shown in Figure 1A, should
Fiber coupling device includes：Pedestal 101, laser array, fast axis collimation lens 154, slow axis collimation lens 158, steering optics
Element 162, convergent lens 166 and optical fiber 170.Wherein, laser array is positioned on pedestal 101, and laser array includes 8 rows
Laser, along z-axis positive direction, first row laser includes 2 lasers 120, and second row laser includes 3 lasers
120, the 3rd row's laser includes 4 lasers 120, and the 4th row's laser includes 4 lasers 120, the 5th row's laser bag
Including 4 lasers 120, the 6th row's laser includes 4 lasers 120, and the 7th row's laser includes 3 lasers 120, and the 8th
Row's laser includes 2 lasers 120, and the multiple lasers 120 often arranged in laser are arranged in a row along the x-axis direction, each to swash
Light device 120 corresponds to a fast axis collimation lens 154 and a slow axis collimation lens 158, often arranges laser and corresponds to one turn
To optical element 162.
In the present embodiment, pedestal 101 is heat sink pedestal, and each laser 120 is cooled, and laser 120 is two poles
Pipe laser single pipe, a width of 100um-200um of bar of each diode laser single tube, the wave-length coverage for exporting laser are
800nm-1100nm, steering optical element 162 are reflecting prism, and the core diameter of optical fiber 170 is 200um-400um, and numerical aperture is small
In equal to 0.22；The laser that each laser 120 exports passes through fast axis collimation lens 154 corresponding with the laser 120 successively
With slow axis collimation lens 158, the quick shaft direction for exporting laser is collimated by fast axis collimation lens 154, collimated by slow axis saturating
Mirror 158 collimates to the slow-axis direction for exporting laser, and the laser light incident after fast and slow axis collimates turns to optics member to corresponding
On part 162, it is turned to by steering optical element 162, specifically, the more of laser output are often arranged in laser array
Beam laser light incident is turned on optical element 162 to corresponding with row's laser, and the multi beam is swashed by the steering optical element 162
Light is turned to, and the direction of propagation is parallel to each other after the steering of the diverted optical element 162 of 26 beam laser of laser array output,
And in the plane of the direction of propagation of the 26 beam laser after steering, the distributed areas of 26 hot spots corresponding to 26 beam laser
It is rounded, on 26 beam laser light incidents after steering to convergent lens 166, fall the distribution of multiple hot spots on convergent lens 166
Region is rounded, assembles 26 beam laser incident thereon by convergent lens 166 and is coupled in optical fiber 170.
Figure 1B shows a kind of side view of according to embodiments of the present invention one fiber coupling device, i.e., on y-z plane
Schematic diagram, Fig. 1 C show a kind of top view of according to embodiments of the present invention one fiber coupling device, i.e., showing on x-z-plane
Be intended to, the side (section on y-z plane) that pedestal 101 is can be seen that from Figure 1A -1C is in square waveform, pedestal 101 it is each recessed
Under platform on place row's laser, a raised platform of pedestal 101, Mei Gezhuan are spaced between adjacent two rows laser
The laser exported to optical element 162 to row's laser turns to, and after diverted, is propagated per Shu Jiguang along z-axis positive direction,
The direction of propagation for often arranging multiple laser corresponding to laser is parallel to each other and coplanar, and the multiple laser vertical incidence after steering is attended the meeting
On poly- lens 166, overall distribution region of the multiple laser on convergent lens 166 on convergent lens 166 is incided with assembling
Lens 166 are coaxial and each radial symmetric on convergent lens 166, by convergent lens 166 by multiple laser coupled into optical fibres
In 170.
Fig. 1 D show hot spot of the laser of according to embodiments of the present invention one laser array output on convergent lens
Schematic diagram, as shown in figure iD, the distributed areas of 26 hot spots corresponding to 26 beam laser are in integrally approximately round shape, in meeting
Each distribution radially of poly- lens 166 is almost identical, forms approximate centrically symmetric shape, and turning to optics member
Under the steering-effecting of part 162, adjust the arrangement interval of multiple laser so that in the direction of the x axis between adjacent laser at intervals of
First distance to a declared goal, in the y-axis direction between adjacent laser at intervals of the second distance to a declared goal.
It can be seen that in the present embodiment, the arrangement density degree between the multiple laser of laser array output can pass through
Turn to optical element 162 to be adjusted so that the laser that various lasers 120 export spatially is arranged even closer, and is entered
It is rounded to be mapped to the distributed areas of multiple hot spots corresponding to the multiple laser on convergent lens 166, can be effectively saturating using assembling
Meet the region of the numerical aperture of optical fiber 170 on mirror 166, as far as possible more laser coupled in common is entered in optical fiber 170.
Fig. 2A shows a kind of schematic diagram of according to embodiments of the present invention two fiber coupling device, and Fig. 2 B show basis
A kind of side view of fiber coupling device of the embodiment of the present invention two, i.e., the schematic diagram on y-z plane, Fig. 2 C are shown according to this
A kind of top view of fiber coupling device of inventive embodiments two, i.e., the schematic diagram on x-z-plane.As seen in figs. 2a-2c, the light
Fine coupling device includes：Pedestal 101, laser array, fast axis collimation lens 154, slow axis collimation lens 158, steering optics member
Part 162, convergent lens 166 and optical fiber 170.Wherein, laser array is positioned on pedestal 101, and laser array swashs including 8 rows
Light device, along z-axis positive direction, first row laser includes 2 lasers 120, and second row laser includes 3 lasers 120,
3rd row's laser includes 4 lasers 120, and the 4th row's laser includes 4 lasers 120, and the 5th row's laser includes 4
Laser 120, the 6th row's laser include 4 lasers 120, and the 7th row's laser includes 3 lasers 120, and the 8th row swashs
Light device includes 2 lasers 120, and the multiple lasers 120 often arranged in laser are arranged in a row along the x-axis direction, each laser
120 correspond to a fast axis collimation lens 154 and a slow axis collimation lens 158, often arrange laser and correspond to a steering light
Learn element 162.
In the present embodiment, pedestal 101 is heat sink pedestal, and each laser 120 is cooled, and laser 120 is two poles
Pipe laser single pipe, a width of 100um-200um of bar of each diode laser single tube, the wave-length coverage for exporting laser are
800nm-1100nm, steering optical element 162 are plane of reflection mirror, and the core diameter of optical fiber 170 is 200um-400um, numerical aperture
Less than or equal to 0.22；The laser that each laser 120 exports passes through and the 120 corresponding fast axis collimation lens of laser successively
154 and slow axis collimation lens 158, the quick shaft direction for exporting laser is collimated by fast axis collimation lens 154, collimated by slow axis
Lens 158 collimate to the slow-axis direction for exporting laser, and the laser light incident after fast and slow axis collimates turns to optics to corresponding
On element 162, it is turned to by steering optical element 162, specifically, often arranges what laser exported in laser array
Multiple laser is incided on steering optical element 162 corresponding with row's laser, by the steering optical element 162 to the multi beam
Laser is turned to, along front upper place (between z-axis positive direction and y-axis positive direction), laser array output after being turned to per Shu Jiguang
The diverted optical element 162 of 26 beam laser steering after the direction of propagation be parallel to each other, and swash in 26 beams after steering
In the plane of the direction of propagation of light, the distributed areas of 26 hot spots are rounded corresponding to 26 beam laser, 26 beam laser after steering
Impinge perpendicularly on convergent lens 166, it is rounded to fall the distributed areas of multiple hot spots on convergent lens 166, saturating by assembling
Mirror 166, which assembles 26 beam laser incident thereon, to be coupled in optical fiber 170.
Fig. 3 A show a kind of schematic diagram of according to embodiments of the present invention three fiber coupling device, and Fig. 3 B show basis
A kind of side view of fiber coupling device of the embodiment of the present invention three, i.e., the schematic diagram on y-z plane, Fig. 3 C are shown according to this
A kind of top view of fiber coupling device of inventive embodiments three, i.e., the schematic diagram on x-z-plane.As shown in figs. 3 a-3 c, the light
Fine coupling device includes：Pedestal 101, laser array, fast axis collimation lens 154, slow axis collimation lens 158, steering optics member
Part 162, convergent lens 166 and optical fiber 170.Wherein, laser array is positioned on pedestal 101, and laser array swashs including 8 rows
Light device, along z-axis positive direction, first row laser includes 2 lasers 120, and second row laser includes 3 lasers 120,
3rd row's laser includes 4 lasers 120, and the 4th row's laser includes 4 lasers 120, and the 5th row's laser includes 4
Laser 120, the 6th row's laser include 4 lasers 120, and the 7th row's laser includes 3 lasers 120, and the 8th row swashs
Light device includes 2 lasers 120, and the multiple lasers 120 often arranged in laser are arranged in a row along the x-axis direction, each laser
120 correspond to a fast axis collimation lens 154 and a slow axis collimation lens 158, often arrange laser and correspond to a steering light
Learn element 162.
In the present embodiment, pedestal 101 is heat sink pedestal, and each laser 120 is cooled, and laser 120 is two poles
Pipe laser single pipe, a width of 100um-200um of bar of each diode laser single tube, the wave-length coverage for exporting laser are
800nm-1100nm, steering optical element 162 are reflecting prism, and the core diameter of optical fiber 170 is 200um-400um, and numerical aperture is small
In equal to 0.22；The laser that each laser 120 exports passes through fast axis collimation lens 154 corresponding with the laser 120 successively
With slow axis collimation lens 158, the quick shaft direction for exporting laser is collimated by fast axis collimation lens 154, collimated by slow axis saturating
Mirror 158 collimates to the slow-axis direction for exporting laser, and the laser light incident after fast and slow axis collimates turns to optics member to corresponding
On part 162, it is turned to by steering optical element 162, specifically, the more of laser output are often arranged in laser array
Beam laser light incident is turned on optical element 162 to corresponding with row's laser, and the multi beam is swashed by the steering optical element 162
Light is turned to, and is propagated after being turned to per Shu Jiguang along front lower place (between z-axis positive direction and y-axis negative direction), and laser array is defeated
The direction of propagation is parallel to each other after the steering of the diverted optical element 162 of 26 beam laser gone out, and in 26 beams after steering
In the plane of the direction of propagation of laser, the distributed areas of 26 hot spots are rounded corresponding to 26 beam laser, and 26 beams after steering swash
Light is impinged perpendicularly on convergent lens 166, and it is rounded to fall the distributed areas of multiple hot spots on convergent lens 166, by assembling
Lens 166, which assemble 26 beam laser incident thereon, to be coupled in optical fiber 170.
Hot spot signal of the laser that laser array exports in above-described embodiment two and embodiment three on convergent lens 166
Figure is consistent with the hot spot schematic diagram shown in Fig. 1 D, has hereinbefore been discussed in detail, will not be repeated here.
Fig. 4 A show a kind of schematic diagram of according to embodiments of the present invention four fiber coupling device, and Fig. 4 B show basis
A kind of side view of fiber coupling device of the embodiment of the present invention four, i.e., the schematic diagram on y-z plane, Fig. 4 C are shown according to this
A kind of top view of fiber coupling device of inventive embodiments four, i.e., the schematic diagram on x-z-plane.As shown in figs. 4 a-4 c, the light
Fine coupling device includes：Pedestal 101, laser array, fast axis collimation lens 154, slow axis collimation lens 158, steering optics member
Part 162, convergent lens 166 and optical fiber 170.Wherein, laser array is positioned on pedestal 101, and laser array includes 31 rows
Laser, often arranging laser includes 1-3 laser 120, between adjacent two rows laser at intervals of 5mm, along z-axis pros
To corresponding to the 1st row's laser at z=-75mm, correspond to the 31st row's laser at z=75mm, 1-3 row's lasers are often arranged
Comprising 1 laser 120,4-11 row's lasers are often arranged often to be arranged comprising 3 comprising 2 lasers 120,12-20 row's lasers
Individual laser 120,21-28 row's lasers are often arranged comprising 2 lasers 120, and 29-31 row's lasers are often arranged to swash comprising 1
Light device 120.The multiple lasers 120 often arranged in laser are arranged in a row along the x-axis direction, and each laser 120 corresponds to one
Fast axis collimation lens 154 and a slow axis collimation lens 158, often arrange laser and correspond to a steering optical element 162.
In the present embodiment, pedestal 101 is heat sink pedestal, and each laser 120 is cooled, and laser 120 is two poles
Pipe laser single pipe, a width of 100um-200um of bar of each diode laser single tube, the wave-length coverage for exporting laser are
800nm-1100nm, steering optical element 162 are plane of reflection mirror, and the core diameter of optical fiber 170 is 200um-400um, numerical aperture
Less than or equal to 0.22；The laser that each laser 120 exports passes through and the 120 corresponding fast axis collimation lens of laser successively
154 and slow axis collimation lens 158, the quick shaft direction for exporting laser is collimated by fast axis collimation lens 154, collimated by slow axis
Lens 158 collimate to the slow-axis direction for exporting laser, and the laser light incident after fast and slow axis collimates turns to optics to corresponding
On element 162, it is turned to by steering optical element 162, specifically, often arranges what laser exported in laser array
Multiple laser is incided on steering optical element 162 corresponding with row's laser, by the steering optical element 162 to the multi beam
Laser is turned to, and is propagated after being turned to per Shu Jiguang along z-axis positive direction, the diverted optics of multiple laser of laser array output
The direction of propagation is parallel to each other after the steering of element 162, and in the plane of the direction of propagation of the multiple laser after steering,
The distributed areas of multiple hot spots are rounded corresponding to multiple laser, and the multiple laser after steering impinges perpendicularly on convergent lens 166
On, fall that the distributed areas of multiple hot spots on convergent lens 166 are rounded, will be incident thereon more by convergent lens 166
Shu Jiguang, which is assembled, to be coupled in optical fiber 170.
Fig. 4 D show hot spot of the laser of according to embodiments of the present invention four laser array output on convergent lens
Schematic diagram, as shown in Figure 4 D, the distributed areas of multiple hot spots corresponding to multiple laser are in integrally approximately round shape, in meeting
Each distribution radially of poly- lens 166 is almost identical, forms approximate centrically symmetric shape, and turning to optics member
Under the steering-effecting of part 162, adjust the arrangement interval of multiple laser so that in the direction of the x axis between adjacent laser at intervals of
First distance to a declared goal, in the y-axis direction between adjacent laser at intervals of the second distance to a declared goal.
Fig. 5 A show a kind of schematic diagram of according to embodiments of the present invention five fiber coupling device, and Fig. 5 B show basis
A kind of side view of fiber coupling device of the embodiment of the present invention five, i.e., the schematic diagram on y-z plane, Fig. 5 C are shown according to this
A kind of top view of fiber coupling device of inventive embodiments five, i.e., the schematic diagram on x-z-plane.As shown in figures 5a-5c, this reality
The fiber coupling device applied in example is identical with the fiber coupling device composition in example IV, 31 rows being positioned on pedestal 101
The laser of laser output is diverted after turning to optical element 162, and specifically, the often row laser in laser array is defeated
The multiple laser gone out is incided on steering optical element 162 corresponding with row's laser, by the steering optical element 162 to this
Multiple laser is turned to, and is propagated after being turned to per Shu Jiguang along front upper place (between z-axis positive direction and y-axis positive direction), laser
The direction of propagation is parallel to each other after the steering of the diverted optical element 162 of multiple laser of array output, and after steering
Multiple laser the direction of propagation plane on, the distributed areas of multiple hot spots are rounded corresponding to multiple laser, after steering
Multiple laser is impinged perpendicularly on convergent lens 166, and it is rounded to fall the distributed areas of multiple hot spots on convergent lens 166,
Multiple laser incident thereon is assembled by convergent lens 166 and is coupled in optical fiber 170.
Fig. 6 A show a kind of schematic diagram of according to embodiments of the present invention six fiber coupling device, and Fig. 6 B show basis
A kind of side view of fiber coupling device of the embodiment of the present invention six, i.e., the schematic diagram on y-z plane, Fig. 6 C are shown according to this
A kind of top view of fiber coupling device of inventive embodiments six, i.e., the schematic diagram on x-z-plane.As shown in figs 6 a-6 c, this reality
The fiber coupling device applied in example is identical with the fiber coupling device composition in example IV, 31 rows being positioned on pedestal 101
The laser of laser output is diverted after turning to optical element 162, and specifically, the often row laser in laser array is defeated
The multiple laser gone out is incided on steering optical element 162 corresponding with row's laser, and the steering optical element 162 is reflection
Prism, the multiple laser is turned to by the steering optical element 162, along front lower place (z-axis positive direction after being turned to per Shu Jiguang
Between y-axis negative direction) to propagate, the diverted optical element 162 of multiple laser of laser array output turns back-propagation side
To being parallel to each other, and in the plane of the direction of propagation of the multiple laser after steering, multiple light corresponding to multiple laser
The distributed areas of spot are rounded, and the multiple laser after steering is impinged perpendicularly on convergent lens 166, fall on convergent lens 166
Multiple hot spots distributed areas it is rounded, multiple laser incident thereon is assembled by convergent lens 166 and is coupled to optical fiber
In 170.
Hot spot signal of the laser that laser array exports in above-described embodiment five and embodiment six on convergent lens 166
Figure is consistent with the hot spot schematic diagram shown in Fig. 1 D, has hereinbefore been discussed in detail, will not be repeated here.
In one embodiment of the invention, the convergent lens 166 in fiber coupling device can use single lens,
Lens group can be used to reduce aberration.
In one embodiment of the invention, can be in slow axis collimation lens in previously described fiber coupling device
Other Optical devices, such as beam expander, shrink beam device, and/or polarization beam combiner can be added between 158 and convergent lens 166.
Pedestal 101 in the various embodiments described above is internally provided with water-cooling channel, is circulated with Cooling Water in water-cooling channel；
In other examples, 101 stepped structure of pedestal, row's laser is placed on every grade of step of the pedestal, when this
When row's laser includes multiple lasers, direction of the multiple lasers 120 along step long side in row's laser is clapped in a row；
It is to add optical compensation in fiber coupling device so to set pedestal so that each laser 120 in laser array exports
Laser propagation it is identical to the light path undergone on the convergent lens 166, the spot size on convergent lens 166 is identical.
In summary, the multiple laser that technical scheme provided by the invention exports to laser array turns to so that
The direction of propagation of multiple laser after steering is parallel to each other, and in the plane of the direction of propagation of the multiple laser after steering
The distributed areas of multiple hot spots are rounded corresponding to upper multiple laser, then are assembled the multiple laser after steering by convergent lens
In coupled into optical fibres, this programme has the advantages that：The multi beam for adjusting laser array by turning to optical element and exporting
Spacing between laser so that the even closer arrangement of multiple laser, and incide corresponding to the multiple laser on convergent lens
The distributed areas of multiple hot spots are rounded, by multiple laser with approximate circle state coupling on section after being assembled by convergent lens
Close into optical fiber, be sufficient filling with the space for the numerical aperture for meeting optical fiber on convergent lens, take full advantage of the numerical value of optical fiber
Aperture, under equal conditions, the laser coupled that more multi-laser exports can be entered optical fiber, considerably improve fiber coupling effect
Rate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of fiber coupling device, it is characterised in that the device includes：Pedestal, laser array, turn to optical element, meeting
Poly- lens and optical fiber；
The laser array is positioned on the pedestal, and the laser array includes multiple rows of laser, often arranges laser bag
Include one or more lasers；
The multiple laser that the steering optical element exports to the laser array turns to so that the multi beam after steering swashs
The direction of propagation of light is parallel to each other, and in the plane of the direction of propagation of the multiple laser after steering, multiple laser pair
The distributed areas for the multiple hot spots answered are rounded；
Multiple laser after steering impinges perpendicularly on the convergent lens and met on the region of numerical aperture of optical fiber, the convergence
Multiple laser is assembled and is coupled into the optical fiber by lens.
2. device as claimed in claim 1, it is characterised in that
In multiple laser after the relay lens, one is formed altogether corresponding to a branch of or multiple laser for often arranging laser
The laser array in face, it is separated by distance to a declared goal between the plane where two neighboring laser array.
3. device as claimed in claim 1, it is characterised in that
Each laser in the laser array is diode laser single tube, and the bar of each diode laser single tube is a width of
100um-200um, the wave-length coverage for exporting laser are 800nm-1100nm.
4. device as claimed in claim 1, it is characterised in that
The core diameter of the optical fiber is 200um-400um, and numerical aperture is less than or equal to 0.22.
5. device as claimed in claim 1, it is characterised in that
The steering optical element includes：Plane of reflection mirror, and/or, reflecting prism.
6. device as claimed in claim 1, it is characterised in that
The convergent lens includes one or more lens.
7. device as claimed in claim 3, it is characterised in that the device further comprises：Corresponding to the laser array
In each laser multiple fast axis collimation lens and multiple slow axis collimation lenses；
Fast axis collimation lens and slow axis collimation are saturating corresponding to the laser process of each laser output in the laser array
After mirror, incide on the steering optical element.
8. device as claimed in claim 7, it is characterised in that the device further comprises：Beam expander or shrink beam device；
The beam expander or shrink beam device are located between the slow axis collimation lens and the steering optical element, or, the expansion
Beam device or shrink beam device are between the steering optical element and the convergent lens.
9. device as claimed in claim 7, it is characterised in that the device further comprises：Polarization beam combiner；
The polarization beam combiner is located between the slow axis collimation lens and the steering optical element, or, the polarization closes
Beam device is between the steering optical element and the convergent lens.
10. device as claimed in claim 1, it is characterised in that
The base interior is provided with water-cooling channel, is circulated with Cooling Water in water-cooling channel；
The stepped structure of pedestal, row's laser is placed on every grade of step of the pedestal, when row's laser includes
During multiple lasers, direction of multiple lasers along step long side in row's laser is clapped in a row；
When the stepped structure of the pedestal, the laser propagation of each laser in laser array output to the meeting
The light path undergone on poly- lens is identical.
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| CN201610556274.8A CN105974534B (en) | 2016-07-14 | 2016-07-14 | A kind of fiber coupling device |
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| CN105974534B true CN105974534B (en) | 2018-01-12 |
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| CN106785898A (en) * | 2017-02-20 | 2017-05-31 | 广东工业大学 | A kind of semiconductor laser fiber coupling system |
| US11385420B2 (en) | 2017-12-29 | 2022-07-12 | Nanjing Casela Technologies Corporation Limited | Photon source comprising a plurality of optical sources and an optical shell to receive the light emitted by the optical source |
| KR102418512B1 (en) * | 2017-12-29 | 2022-07-07 | 코렐라스 오와이 | Laser processing apparatus and method |
| US12068584B2 (en) | 2020-12-28 | 2024-08-20 | BWT Beijing Ltd. | Semiconductor-fiber-laser assembly and fiber laser |
| CN112952549B (en) * | 2021-03-17 | 2022-11-04 | 深圳市星汉激光科技股份有限公司 | Semiconductor laser coupling system |
| CN113381270A (en) * | 2021-04-21 | 2021-09-10 | 深圳市瑞沃德生命科技有限公司 | Laser and have its laser physiotherapy device |
| CN114006269A (en) * | 2021-12-29 | 2022-02-01 | 深圳市星汉激光科技股份有限公司 | Direct output system of high-power semiconductor laser and polarization beam combining structure thereof |
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