CN109683250A - Active optical cable device - Google Patents
Active optical cable device Download PDFInfo
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- CN109683250A CN109683250A CN201710968556.3A CN201710968556A CN109683250A CN 109683250 A CN109683250 A CN 109683250A CN 201710968556 A CN201710968556 A CN 201710968556A CN 109683250 A CN109683250 A CN 109683250A
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- Prior art keywords
- groove
- lens group
- optical cable
- cable device
- active optical
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- 230000003287 optical effect Effects 0.000 title claims abstract description 99
- 239000013307 optical fiber Substances 0.000 claims abstract description 74
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 71
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 71
- 239000010703 silicon Substances 0.000 claims abstract description 71
- 239000000758 substrate Substances 0.000 claims abstract description 69
- 238000000034 method Methods 0.000 claims description 30
- 230000008569 process Effects 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims 2
- 238000010168 coupling process Methods 0.000 abstract description 26
- 230000008878 coupling Effects 0.000 abstract description 24
- 238000005859 coupling reaction Methods 0.000 abstract description 24
- 238000010586 diagram Methods 0.000 description 15
- 239000003292 glue Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000039 congener Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4228—Passive alignment, i.e. without a detection of the degree of coupling or the position of the 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
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/424—Mounting of the optical light guide
- G02B6/4243—Mounting of the optical light guide into a groove
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Embodiment of the invention discloses a kind of active optical cable devices.The active optical cable device includes: lens group module；Silicon substrate V-groove；And one or more optical fiber in the silicon substrate V-groove is set, wherein the lens group module has the first align structures, the silicon substrate V-groove has the second align structures cooperated with first align structures, the silicon substrate V-groove and the lens group module alignment, one or more described optical fiber are coupled to the lens group module by the silicon substrate V-groove.Active optical cable device disclosed by the invention can be improved the main mould coupling efficiency of optical fiber in active optical cable device, reduce assembly cost and cumbersome degree.
Description
Technical field
The present invention relates to technical field of optical fiber communication more particularly to a kind of silicon substrate V-grooves and lens group module composite structure
Active optical cable device.
Background technique
The quick application of internet and intelligent terminal has pushed flourishing for information age.The blowout of global metadata amount
Increase also to high speed router, supercomputer, storage equipment and data center etc. propose increasingly higher demands.?
On the basis of the trend of optical interconnection is built upon away from balancing between discrete data rate in communication network industry.With the increasing of data transfer rate
Long, in the transmission of long range information, optical fiber is instead of copper wire, because the signal of higher speed is hardly decayed.It is exactly this
One trend has inspired the concept of " optical fiber to chip ", and the ultrahigh speed electric signal between microchip and the external world is replaced by optical signal.It is micro-
Chip is still used as full electric treatment unit, and optical fiber sends as to microchip or receives from it the high-speed data of data most
Whole channel.Main interconnection mode one of of the active optical cable as these core equipments, it will to entire telecommunications and data communication city
Field generates important influence.
Fiber coupling is a big technical barrier of active optical cable.Coupling efficiency is not high and bandwidth for multimode optical fibers is lower makes always
About the development and application of active optical cable.
However, the coupling efficiency of the existing active optical cable LMDS Light Coupled Device using V-groove is not very high.Because at this
It is most of to be all that the technique being molded by mold is process in a little active optical cable devices, and what this technique processed
Coupled apparatus, the harmomegathus of rigging error and plastic material itself between mold can make the module where V-groove and lens group
Between rigging error it is larger, cause the coupling efficiency of optical fiber lower.It is usually necessary to use the methods of active coupling to improve coupling
Efficiency is closed, the cumbersome degree of cost and technique is but increased.In addition, the mold of production V-groove is processed by diamond cutter
At, the module where lacking flexibility, with lens group has limitation when assembling.
In addition, largely focusing on the end of reception optical fiber in the optical coupling structure of these existing active optical cable devices
Spot size on face is all smaller, differs larger with the mode spot-size of optical fiber main mould.It can inspire so more in optical fiber
High-order mode, the energy for leading to be coupled to main mould in optical fiber reduce, and intermode dispersion are increased, to reduce bandwidth of an optical fiber.And
And the hot spot focused at this time is small, the angle of divergence is big, then the ability of active optical cable tolerance optical fiber front-rear position error is poor.
Therefore, this field needs a kind of novel active optical cable device, can be improved light by this active optical cable device
Fine main mould coupling efficiency and bandwidth.
Summary of the invention
The present invention for the existing active optical cable LMDS Light Coupled Device using V-groove coupling efficiency is lower and V-groove
The poor problem of processing technology flexibility, provide a kind of New Active cable components using silicon substrate V-groove.It can not only
The higher V-groove of precision is enough made by the technique of dry etching, by way of tight fit with the module phase where lens group
Alignment reduces alignment error, improves active optical cable device coupling efficiency, the method without adding active alignment, drop
The cost of low assembly and cumbersome degree；And the technique of silicon substrate V-groove processing is very flexible, can process not according to actual needs
Congener V-groove.
The present invention receives the spot size and light of end face for optical fiber is focused in existing active optical cable optical coupling scheme
The mode spot-size of fine main mould differ the larger main mould coupling efficiency for leading to optical fiber it is lower to reduce fiber bandwidth the problem of, propose
A kind of novel active optical cable optical coupling structure.The structure can make the size of focal beam spot and the mould spot ruler of optical fiber main mould
It is very little equal, main mould coupling efficiency in optical fiber can not only be improved, reduces intermode dispersion, and then improve bandwidth of an optical fiber；And this
When the spot size that focuses it is larger, the angle of divergence is small, improves the ability of active optical cable tolerance optical fiber front-rear position error.
The present invention is implemented with the following technical solutions:
In one embodiment of the invention, a kind of active optical cable device is provided, comprising: lens group module；Silicon substrate V-type
Slot；And one or more optical fiber in the silicon substrate V-groove is set, wherein the lens group module has the first alignment knot
Structure, the silicon substrate V-groove have the second align structures for cooperating with first align structures, the silicon substrate V-groove with it is described
Lens group module alignment, one or more described optical fiber are coupled to the lens group module by the silicon substrate V-groove.
In one embodiment of the invention, the material of lens group module is plastics or resin.
In one embodiment of the invention, lens group module includes convex lens, concavees lens and/or plane mirror.
In one embodiment of the invention, lens group module includes at least one lens.
In one embodiment of the invention, lens group module includes at least one set of lens.
In one embodiment of the invention, there is blind hole on the output end face of lens group module.
In one embodiment of the invention, the section of blind hole is circle, and caliber size holding is basically unchanged.
In one embodiment of the invention, the section of blind hole be circle, caliber size it is linear or it is non-linear gradually
Become.
In one embodiment of the invention, the section of blind hole is circle, and caliber size changes in stepped ramp type.
In one embodiment of the invention, lens group module output end face is smooth optical surface.
In one embodiment of the invention, lens group module is process by casting technique.
In one embodiment of the invention, the lens in lens group module are configured to receive the transmitting from laser
Light beam, the output beam after lens group is converted, the basic phase of mode spot-size size of the spot size and optical fiber main mould of the light beam
Deng.
In one embodiment of the invention, the output beam of lens group module is collimated light beam.
In one embodiment of the invention, optical fiber is multimode fibre and/or single mode optical fiber.
In one embodiment of the invention, silicon substrate V-groove includes one or more slot.
In one embodiment of the invention, a plurality of slot is uniformly distributed or non-uniform Distribution.
In one embodiment of the invention, active optical cable device further includes cover board, and optical fiber is fixed on V-type by the cover board
In slot.
In one embodiment of the invention, silicon substrate V-groove is process by etching technics.
In one embodiment of the invention, the first align structures are the groove being arranged in the lens group module, institute
Stating the second align structures is the step structure corresponding with the groove on the setting silicon substrate V-groove, and the step structure is tight
It leans against in the groove.
In one embodiment of the invention, step structure is arranged at least one end of the silicon substrate V-groove.
In one embodiment of the invention, the first align structures are the groove being arranged in the lens group module, institute
Stating the second align structures is the step structure corresponding with the groove being arranged on silicon substrate V-groove one end, wherein described
Microscope group module further includes elastic bumps structure, and it is the other end that the elastic bumps structure, which squeezes the silicon substrate V-groove, so that described
Step structure abuts against in the groove of lens group module to realize alignment.
In one embodiment of the invention, the first align structures are that bulge-structure is arranged in the lens group module,
Second align structures are the grooves with the bulge-structure correspondingly-shaped being arranged on silicon substrate V-groove one end, work as institute
When stating silicon substrate V-groove and being assembled to the lens group module, the bulge-structure is caught in the groove.
In one embodiment of the invention, bulge-structure is that cross section is convex for the strip of trapezoidal, triangle or arc line shaped
It rises, the cross-sectional shape of the groove is corresponding with the bulge-structure cross-sectional shape.
In one embodiment of the invention, bulge-structure is multiple discrete protruding blocks, the position of the groove and shape
Shape is corresponding with the bulge-structure.
Technical solution disclosed by the invention, the beneficial effect is that:
The composite construction of module where active optical cable device of the invention uses silicon substrate V-groove and lens group.It is not only
The higher V-groove of precision can be made by the technique of dry etching, the module by way of tight fit and where lens group
It aligns, to improve active optical cable device coupling efficiency, the method without adding active alignment reduces the cost of assembly
With cumbersome degree；And the technique of silicon substrate V-groove processing is very flexible, can process different types of V-groove according to actual needs.
Active optical cable optical coupling structure of the invention makes the spot size focused on reception optical fiber end face and optical fiber master
The mode spot-size of mould is equal.The coupling efficiency of main mould in optical fiber can not only be improved in this way, reduce intermode dispersion, and then improve light
Fine bandwidth；And focused spot size is larger at this time, and the angle of divergence is smaller, can be improved active optical cable tolerance optical fiber front-rear position
The ability of error.
Detailed description of the invention
For the above and other advantages and features for each embodiment that the present invention is furture elucidated, will be presented with reference to attached drawing
The more specific description of various embodiments of the present invention.It is appreciated that these attached drawings only describe exemplary embodiments of the invention, therefore
It is not to be regarded as being restriction on its scope.In the accompanying drawings, in order to cheer and bright, identical or corresponding component will use identical or class
As mark indicate.
Fig. 1 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.
Fig. 2 shows diagrammatic cross-section of active optical cable device shown in Fig. 1 in yz plane.
Fig. 3 shows diagrammatic cross-section of active optical cable device shown in Fig. 1 on x/y plane.
Fig. 4 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.
Fig. 5 shows diagrammatic cross-section of active optical cable device shown in Fig. 4 in yz plane.
Fig. 6 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.
Fig. 7 shows diagrammatic cross-section of active optical cable device shown in Fig. 6 in yz plane.
Fig. 8 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.
Fig. 9 shows diagrammatic cross-section of active optical cable device shown in Fig. 8 in yz plane.
Figure 10 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.
Figure 11 shows diagrammatic cross-section of active optical cable device shown in Figure 10 in yz plane.
Figure 12 shows the first exemplary schematic side view figure of the lens group module of embodiment according to the present invention.
Figure 13 shows the second exemplary schematic side view figure of the lens group module of embodiment according to the present invention.
Figure 14 shows the exemplary schematic side view figure of third of the lens group module of embodiment according to the present invention.
Figure 15 shows the schematic diagram of active optical cable optical coupling method according to prior art.
Figure 16 shows the light path schematic diagram that light is propagated in lens group module according to an embodiment of the invention.
Specific embodiment
In the following description, with reference to each embodiment, present invention is described.However, those skilled in the art will recognize
Know can in the case where none or multiple specific details or with other replacements and/or addition method, material or component
Implement each embodiment together.In other situations, well known structure, material or operation are not shown or are not described in detail in order to avoid making this
The aspects of each embodiment of invention is obscure.Similarly, for purposes of explanation, specific quantity, material and configuration are elaborated, with
Comprehensive understanding to the embodiment of the present invention is just provided.However, the present invention can be implemented in the case where no specific detail.This
Outside, it should be understood that each embodiment shown in the accompanying drawings is illustrative expression and is not drawn necessarily to scale.
In the present specification, the reference of " one embodiment " or " embodiment " is meaned to combine embodiment description
A particular feature, structure, or characteristic is included at least one embodiment of the invention.Occur in everywhere in this specification short
Language " in one embodiment " is not necessarily all referring to the same embodiment.
It should be noted that the embodiment of the present invention is described processing step with particular order, however this is only
Facilitate and distinguish each step, and is not the sequencing for limiting each step, it in different embodiments of the invention, can be according to work
Skill is adjusted to adjust the sequencing of each step.
The present invention is described in detail below by specific embodiment and in conjunction with attached drawing.
Fig. 1 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.As shown in Figure 1, active light
Cable device can include: lens group module 1, silicon substrate V-groove 2 and one or more optical fiber 3 being arranged in silicon substrate V-groove 2.
Lens group module 2 can be process by materials such as plastics or resins by techniques such as mold injection moldings.Lens group mould
Block 2 can only include a lens, also may include two and more than two lens.Alternatively, lens group module 2 may include
One group of lens group also may include two groups and lens group more than two.Lens can be in convex lens, concavees lens and plane mirror
It is one or more.The output end face of lens group module can be smooth optical surface.Silicon substrate V-groove 2 has one or more V
Type groove, optical fiber 3 are arranged in V-groove, and optical coupled with the output end face of lens module.Silicon substrate V-groove can be by etching work
Skill processes to be formed.Those skilled in the art can set the position of each V-groove according to actual needs, for example, each V-groove can be equal
It is distributed in the one side of silicon substrate V-groove 2 evenly, alternatively, each V-groove can be non-uniformly distributed in the one side of silicon substrate V-groove 2.
Lens group module 1 has the first align structures 11.Silicon substrate V-groove 2 has the cooperated with the first align structures 11
Two align structures 21.In the embodiment shown in fig. 1, the first align structures 11 are the grooves being arranged in lens group module, the
Two align structures 21 are the corresponding step structures being arranged on silicon substrate V-groove.Second pair can be formed by dry etch process
Quasi- structure 21.Second align structures 21 abut against in the groove of lens group module to realize alignment connection.Lens group module 1 and silicon
Base V-groove 2 is positioned by first align structures 11 and the second align structures 21 at both ends, to realize alignment coupling.
Hereinafter, it will lens group mould is discussed in detail in conjunction with the partial enlargement diagram of the example embodiment of lens group module
The structure of block.
Fig. 1 is returned, optical fiber 3 is not polished, and fiber end face is connected with output end face by index matching glue, however
The scope of the present invention is not limited thereto, and optical fiber 3 is also possible to polish optical fiber.Optical fiber 3 can be single mode optical fiber and/or multimode fibre.
Fig. 2 shows diagrammatic cross-section of active optical cable device shown in Fig. 1 in yz plane.As shown in Fig. 2, optical fiber 3 is arranged
In V-groove, cover board 4 is pressed on optical fiber 3 and is connected by glue with silicon substrate V-groove 2.
Fig. 3 shows diagrammatic cross-section of active optical cable device shown in Fig. 1 on x/y plane.As shown in figure 3, silicon substrate V-groove 2
End face and lens group module 1 output end face between there are the gap of one fixed width, index matching glue is filled in gap
To connect fiber end face and output end face.
Fig. 4 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.With active light shown in FIG. 1
Cable device is similar, the active optical cable device can include: lens group module 5, silicon substrate V-groove 6 and setting are in silicon substrate V-groove 6
One or more optical fiber 3.To simplify the explanation, the description with Fig. 1 similar assembly is omitted.With active optical cable device shown in FIG. 1
Part the difference is that, lens group module 5 and silicon substrate V-groove part 6 are positioned by single-ended step structure 51 and 61, with
Realize that optical fiber 3 is coupled with the alignment of lens group module 5.Optical fiber 3 is not polished, and fiber end face and output end face pass through refractive index
Matching glue is connected.
Fig. 5 shows diagrammatic cross-section of active optical cable device shown in Fig. 4 in yz plane.Cover board 4 is pressed on optical fiber 3 and leads to
Glue is crossed to be connected with silicon substrate V-groove 6.
Fig. 6 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.With active light shown in FIG. 1
Cable device is similar, the active optical cable device can include: lens group module 7, silicon substrate V-groove 8 and setting are in silicon substrate V-groove 8
One or more optical fiber 3.To simplify the explanation, the description with Fig. 1 similar assembly is omitted.With active optical cable device shown in FIG. 1
Part the difference is that, lens group module 7 and silicon substrate V-groove 8 have the first align structures 71 and the second alignment knot respectively at one end
Structure 81, the first align structures 71 are the grooves being arranged in lens group module, and the second align structures 81 are on setting silicon substrate V-groove
Corresponding step structure.Lens group module 7 further includes that the elastic bumps structure 72 of the other end is arranged in.The elastic bumps structure
72 squeeze silicon substrate V-groove 8, so that the second align structures 81 abut against in the groove of lens group module to realize alignment.
Fig. 7 shows diagrammatic cross-section of active optical cable device shown in Fig. 6 in yz plane.Cover board 4 is pressed on optical fiber 3 and leads to
Glue is crossed to be connected with silicon substrate V-groove 8.
Fig. 8 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.With active light shown in FIG. 1
Cable device is similar, the active optical cable device can include: lens group module 9, silicon substrate V-groove 10 and setting are in silicon substrate V-groove 10
One or more interior optical fiber 3.To simplify the explanation, the description with Fig. 1 similar assembly is omitted.With active optical cable shown in FIG. 1
Device the difference is that, there is at least one trapezoidal strip projected parts structure 91, and silicon substrate V-groove 10 in lens group module 9
The upper groove 101 with respective shapes, so that bulge-structure 91 is caught in when silicon substrate V-groove 10 is assembled to lens group module 9
Groove 101 realizes tight fit alignment.It should be appreciated by those skilled in the art although Fig. 8, which is shown in lens group module 9, to be had
Two trapezoidal strip projected parts structures 91 can only be arranged one however, the scope of the present invention is not limited thereto in lens group module 9
Strip projected parts structure 91, or in order to improve alignment precision, it is convex that three or three or more strips are set in lens group module 9
Play structure 91.
Fig. 9 shows diagrammatic cross-section of active optical cable device shown in Fig. 8 in yz plane.Cover board 4 is pressed on optical fiber 3 and leads to
Glue is crossed to be connected with silicon substrate V-groove 10.
Figure 10 shows the stereoscopic schematic diagram of the active optical cable device of embodiment according to the present invention.With it is shown in FIG. 1 active
Cable components are similar, the active optical cable device can include: lens group module 11, silicon substrate V-groove 12 and setting are in silicon substrate V-groove
One or more optical fiber 3 in 12.To simplify the explanation, the description with Fig. 1 similar assembly is omitted.With active light shown in FIG. 1
Cable device the difference is that, with the strip projected parts structure 111 of at least one triangle, and silicon substrate V in lens group module 11
With the groove 121 of respective shapes in type groove 12, so that when silicon substrate V-groove 12 is assembled to lens group module 11, protrusion knot
Structure 111 is caught in groove 101 and realizes tight fit alignment.
Figure 11 shows diagrammatic cross-section of active optical cable device shown in Figure 10 in yz plane.Cover board 4 is pressed on optical fiber 3 simultaneously
It is connected by glue with silicon substrate V-groove 12.
Fig. 8 to Figure 11 shows in lens group module phase in the strip projected parts structure and silicon substrate V-groove of two kinds of cross sectional shapes
The groove of shape is answered, a variety of modifications can be carried out to the groove of strip projected parts structure and correspondingly-shaped, for example, strip projected parts structure
Cross-sectional shape can also be rectangle, square, arc line shaped etc., and groove shapes are corresponding with convex shape, alternatively, can also be by strip
Bulge-structure is changed to multiple discrete protruding blocks and corresponding groove.In addition, also bulge-structure can be arranged in silicon substrate V
In type groove, and groove corresponding with bulge-structure is set in lens group module.On it will be appreciated by those skilled in the art that
Modification is stated to fall within the protection scope of the present invention.
Above-mentioned combination Fig. 1 to Figure 11 describes the multiple of the align structures for being directed at lens group module and silicon substrate V-groove
Example.However it should be appreciated by one skilled in art that the align structures in each embodiment can be combined, so as to more smart
Really it is directed at lens group module and silicon substrate V-groove.For example, active optical cable device can not only include step align structures but also include protrusion
And corresponding groove alignment feature.
Figure 12 shows the first exemplary schematic side view figure of the lens group module of embodiment according to the present invention.Figure 12 institute
The lens group module shown includes doublet, i.e. lens 131 and 132.Lens group module can be led to by materials such as plastics or resins
The techniques such as mold injection molding are crossed to be process.There is constant blind of one or more caliber sizes on the output end face of lens group module
Hole 133.Optical fiber 134 is placed in the blind hole of doublet output end face.Input light by two lens 131 and 132 conversion it
Afterwards, from output end face 135, i.e. the top outgoing of blind hole 133.The reception end face of output end face 135 and optical fiber 134 is all smooth flat
Whole.134 end face of optical fiber is connected with output end face 135 by index matching glue.
Figure 13 shows the second exemplary schematic side view figure of the lens group module of embodiment according to the present invention.Figure 13 institute
The lens group module shown includes three lens groups, i.e. 141,143 and 144 and 45 ° of reflectings surface 142 of lens.Lens group module can be by
The materials such as plastics or resin are process by techniques such as mold injection moldings.There is one or more on the output end face of lens group module
The blind hole that a caliber size is become larger by arc.Optical fiber 147 is placed in the blind hole of output end face.The laser emitted in laser
It is emitted after the conversion of three lens, 141,143 and 144 and 45 ° of reflectings surface 142 from lens group output end face 145, coupling
Into optical fiber 147.146 top end face of blind hole is lens group output end face 145, and end face is smooth.In order to improve in Figure 12
Optical fiber 134 is not easy the disadvantage imported in blind hole 133, and the blind hole 146 that caliber size is gradually increased by arc can more easily light
The importing of fibre 147.
Figure 14 shows the exemplary schematic side view figure of third of the lens group module of embodiment according to the present invention.Figure 14 institute
The lens group module shown includes doublet, i.e. lens 151 and 152.Lens group module can be led to by materials such as plastics or resins
The techniques such as mold injection molding are crossed to be process.The blind hole of stepped ramp type variation is pressed on the output end face of lens group module with caliber size
154.Optical fiber 155 is placed in the blind hole of output end face.Input light is after the conversion of two lens 151 and 152, from output end
Face 153, i.e. the top outgoing of blind hole 154.The reception end face of output end face 153 and optical fiber 155 is all smooth optical surface.Bore
The blind hole 154 that size is increased by stepped ramp type can more easily optical fiber 155 importing.
Figure 15 shows the schematic diagram of active optical cable optical coupling method according to prior art.Laser 161 is emitted vertical
The light beam in direction is converted into collimated light beam by first lens 162, becomes the light of horizontal direction using 45 ° of reflectings surface 163
Beam finally focuses on the end face of reception optical fiber 165 by second lens 164.Focus on the spot size of reception optical fiber end face
It differs larger with the main mould size of optical fiber, is easy to have excited high-order mode, increases intermode dispersion, to reduce bandwidth of an optical fiber.And
And when fiber position generates error, the main mould coupling efficiency of optical fiber is influenced very big.
It, can will be each in lens group module according to the present invention in order to improve the active optical cable optical coupling mode of the prior art
A component part is adjusted, so that the spot size of outgoing beam and the mode spot-size size of optical fiber main mould are of substantially equal.
Figure 16 shows the light path schematic diagram that light is propagated in lens group module according to an embodiment of the invention.Laser
Device 171 can be vertical cavity surface emitting laser.The light beam for the vertical direction that laser 171 is emitted passes through first lens 172
Become the collimated light beam of horizontal direction after conversion with second lens 173, then in coupled into optical fibres 174.The collimated light beam
When reaching reception end face, the mode spot-size size of spot size and optical fiber main mould is of substantially equal, and the coupling efficiency of main mould is larger, mould
Between dispersion it is small, fibre ribbon is roomy.And when the position of optical fiber generates error, the influence to optical fiber main mould coupling efficiency is smaller.
Although described above is multiple embodiments of the invention, however, it is to be understood that they are intended only as example to present
, and without limitation.For those skilled in the relevant art it is readily apparent that various groups can be made to each embodiment
Conjunction, variations and modifications are without departing from the spirit and scope of the invention.Therefore, the width of the invention disclosed herein and range be not
It should be limited, and should be determined according only to the appended claims and its equivalent replacement by above-mentioned disclosed exemplary embodiment
Justice.
Claims (24)
1. a kind of active optical cable device, comprising:
Lens group module；
Silicon substrate V-groove；And
One or more optical fiber in the silicon substrate V-groove is set,
Wherein the lens group module has the first align structures, and the silicon substrate V-groove has matches with first align structures
The second align structures closed, the silicon substrate V-groove and the lens group module alignment, one or more described optical fiber pass through described
Silicon substrate V-groove is coupled to the lens group module.
2. active optical cable device according to claim 1, which is characterized in that the material of the lens group module be plastics or
Resin.
3. active optical cable device according to claim 1, which is characterized in that the lens group module includes convex lens, recessed
Lens and/or plane mirror.
4. active optical cable device according to claim 1, which is characterized in that the lens group module includes that at least one is saturating
Mirror.
5. active optical cable device according to claim 1, which is characterized in that the lens group module includes at least one set of saturating
Mirror.
6. active optical cable device according to claim 1, which is characterized in that have on the output end face of the lens group module
There is blind hole.
7. active optical cable device according to claim 6, which is characterized in that the section of the blind hole is circle, bore
Size holding is basically unchanged.
8. active optical cable device according to claim 6, which is characterized in that the section of the blind hole is circle, bore
Size is linear or non-linear gradual change.
9. active optical cable device according to claim 6, which is characterized in that the section of the blind hole is circle, bore
Size changes in stepped ramp type.
10. active optical cable device according to claim 1, which is characterized in that the lens group module output end face is flat
Sliding optical surface.
11. active optical cable device according to claim 1, which is characterized in that the lens group module passes through casting technique
It is process.
12. active optical cable device according to claim 1, which is characterized in that the lens in the lens group module are matched
It is set to and receives the transmitting light beam from laser, the output beam after lens group is converted, the spot size and optical fiber of the light beam
The mode spot-size size of main mould is of substantially equal.
13. active optical cable device according to claim 12, which is characterized in that the output beam of the lens group module is
Collimated light beam.
14. active optical cable device according to claim 1, which is characterized in that the optical fiber is multimode fibre and/or single mode
Optical fiber.
15. active optical cable device according to claim 1, which is characterized in that the silicon substrate V-groove includes one or more
Slot.
16. active optical cable device according to claim 15, which is characterized in that a plurality of slot is uniformly distributed or non-homogeneous
Distribution.
17. active optical cable device according to claim 1, which is characterized in that further include cover board, the cover board consolidates optical fiber
It is scheduled in V-groove.
18. active optical cable device according to claim 1, which is characterized in that the silicon substrate V-groove is added by etching technics
Work forms.
19. active optical cable device according to claim 1, which is characterized in that first align structures are arranged in institute
The groove in lens group module is stated, second align structures are corresponding with the groove on the setting silicon substrate V-groove
Step structure, the step structure abut against in the groove.
20. active optical cable device according to claim 19, which is characterized in that the step structure is arranged in the silicon substrate
On at least one end of V-groove.
21. active optical cable device according to claim 1, which is characterized in that first align structures are arranged in institute
State the groove in lens group module, second align structures be arranged on silicon substrate V-groove one end with the groove pair
The step structure answered, wherein the lens group module further includes elastic bumps structure, the elastic bumps structure squeezes the silicon
Base V-groove is the other end, so that the step structure abuts against in the groove of lens group module to realize alignment.
22. active optical cable device according to claim 1, which is characterized in that first align structures are arranged in institute
State bulge-structure in lens group module, second align structures be arranged on silicon substrate V-groove one end with the protrusion
The groove of structure correspondingly-shaped, when the silicon substrate V-groove is assembled to the lens group module, the bulge-structure is caught in described
Groove.
23. active optical cable device according to claim 22, which is characterized in that the bulge-structure is that cross section is terraced
The strip projected parts of shape, triangle or arc line shaped, the cross-sectional shape of the groove are corresponding with the bulge-structure cross-sectional shape.
24. active optical cable device according to claim 22, which is characterized in that the bulge-structure is multiple discrete convex
Bittiness, the position of the groove is corresponding with the bulge-structure with shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968556.3A CN109683250A (en) | 2017-10-18 | 2017-10-18 | Active optical cable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968556.3A CN109683250A (en) | 2017-10-18 | 2017-10-18 | Active optical cable device |
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| Publication Number | Publication Date |
|---|---|
| CN109683250A true CN109683250A (en) | 2019-04-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710968556.3A Pending CN109683250A (en) | 2017-10-18 | 2017-10-18 | Active optical cable device |
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|---|---|---|---|---|
| US20120251052A1 (en) * | 2011-04-01 | 2012-10-04 | Hon Hai Precision Industry Co., Ltd. | Optical fiber connector |
| CN104459925A (en) * | 2013-09-17 | 2015-03-25 | 富士康(昆山)电脑接插件有限公司 | Lens module |
| CN104508524A (en) * | 2012-04-20 | 2015-04-08 | 康宁光电通信有限责任公司(美国) | Fiber optic modules having a fiber tray, optical-to-optical fiber optic connectors, and methods thereof |
| CN104808298A (en) * | 2015-05-04 | 2015-07-29 | 长芯盛（武汉）科技有限公司 | Active fiber coupling device |
| CN104991318A (en) * | 2015-05-29 | 2015-10-21 | 长芯盛（武汉）科技有限公司 | Optical fiber coupling device for active optical cable |
| CN105278042A (en) * | 2014-07-21 | 2016-01-27 | 长春理工大学 | Preparation method of silicon-based V-shaped groove equipped with micro reflector |
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2017
- 2017-10-18 CN CN201710968556.3A patent/CN109683250A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120251052A1 (en) * | 2011-04-01 | 2012-10-04 | Hon Hai Precision Industry Co., Ltd. | Optical fiber connector |
| CN104508524A (en) * | 2012-04-20 | 2015-04-08 | 康宁光电通信有限责任公司(美国) | Fiber optic modules having a fiber tray, optical-to-optical fiber optic connectors, and methods thereof |
| CN104459925A (en) * | 2013-09-17 | 2015-03-25 | 富士康(昆山)电脑接插件有限公司 | Lens module |
| CN105278042A (en) * | 2014-07-21 | 2016-01-27 | 长春理工大学 | Preparation method of silicon-based V-shaped groove equipped with micro reflector |
| CN104808298A (en) * | 2015-05-04 | 2015-07-29 | 长芯盛（武汉）科技有限公司 | Active fiber coupling device |
| CN104991318A (en) * | 2015-05-29 | 2015-10-21 | 长芯盛（武汉）科技有限公司 | Optical fiber coupling device for active optical cable |
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Application publication date: 20190426 |