CN106873094A - A kind of optical interconnected structure for multi-channel parallel optical coupling - Google Patents
A kind of optical interconnected structure for multi-channel parallel optical coupling Download PDFInfo
- Publication number
- CN106873094A CN106873094A CN201710131727.7A CN201710131727A CN106873094A CN 106873094 A CN106873094 A CN 106873094A CN 201710131727 A CN201710131727 A CN 201710131727A CN 106873094 A CN106873094 A CN 106873094A
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- Prior art keywords
- fiber
- optical
- connector
- hole
- array
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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
- 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
- G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
Abstract
The invention discloses a kind of optical interconnected structure for multi-channel parallel optical coupling, for improving the precision and efficiency of optical coupling and simplifying manufacture craft.The optical interconnected structure, including：Fiber array, fiber stub, microlens array, and, connector；The fiber array includes a plurality of optical fiber, the fiber stub includes multiple lock pin holes, the microlens array includes multiple lenticules, the a plurality of optical fiber is inserted in multiple lock pin holes of the fiber stub, the multiple lenticule is corresponded with multiple lock pin holes of the fiber stub and set, the connector is provided with the through hole of two stepped holes and the described two stepped holes of connection positioned at two ends, and the fiber stub and the microlens array are plugged into described two stepped holes respectively.
Description
Technical field
The present invention relates to technical field of photo communication, and in particular to a kind of light network knot for multi-channel parallel optical coupling
Structure.
Background technology
With the requirement of high-speed and high-density high capacity communication, the information content of single channel transmission much can not meet people increasingly
The demand to data for increasing, therefore given birth in optical communication field, the application of high-speed multiple channel parallel light transceiver component, thus
The structure being born for high-speed multiple channel parallel light coupled interconnection.
In the prior art, a kind of structure is to fix fiber array with double layer substrate, first by many light in fiber array
Fibre is placed in a plurality of parallel V-groove or U-type groove opened up on infrabasal plate, then fixed with upper substrate side by side.
Practice finds that above-mentioned biradical board fixing structure is positioned using V-groove or U-type groove, and ratio of precision is relatively difficult to control to, and
Optical fiber is sandwiched between upper and lower substrate the obstruction formd to optical coupling, influences coupling efficiency.
And, in the prior art, generally by fiber array and chip direct-coupling, its optics tolerance is smaller, to equipment essence
Degree requirement is higher, and coupling efficiency is low.
In addition, also have some structures to need for fiber end face to grind to form 45 degree of angles and transferred to light path in the prior art,
Complex manufacturing technology.
The content of the invention
The embodiment of the present invention provides a kind of optical interconnected structure for multi-channel parallel optical coupling, for improving optical coupling
Precision and efficiency and simplified manufacture craft.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of optical interconnected structure for multi-channel parallel optical coupling, including：Fiber array, fiber stub, microlens array, with
And, connector；The fiber array includes a plurality of optical fiber, and the fiber stub includes multiple lock pin holes, the microlens array
Including multiple lenticules, a plurality of optical fiber is inserted in the multiple lock pin hole, the multiple lenticule and the multiple lock pin
Hole is corresponded and sets, and the connector is provided with positioned at two stepped holes at two ends and leading to for the described two stepped holes of connection
Hole, the fiber stub and the microlens array are plugged into described two stepped holes respectively.
As can be seen from the above technical solutions, embodiment of the present invention technical scheme achieves following technique effect：
1. fiber array is inserted into fiber stub, with fiber stub fixed form instead of traditional biradical plate and V-groove or
The fixed form of person's U-type groove, improves the installation accuracy of optical fiber, and avoids optical fiber from being extruded, and can effectively improve optical coupling
Efficiency；
2. microlens array structure be increased, and so, microlens array is located between fiber array and chip when being coupled with chip,
Both are no longer direct-couplings afterwards, can so improve optics tolerance, reduce the required precision to optical interconnected structure, are effectively improved
Coupling efficiency.
3. fiber end face need not be processed the optical plane to form special angle, such as 45 °, it is only necessary to according to normal wire jumper
Grinding steps are ground, and manufacture craft is simple.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to institute in embodiment and description of the prior art
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the schematic diagram of the optical interconnected structure for multi-channel parallel optical coupling provided in an embodiment of the present invention；
Fig. 2 is the structural representation of fiber array；
Fig. 3 is the structural representation of fiber stub；
Fig. 4 a and Fig. 4 b are respectively the front view and side view of microlens array；
Fig. 5 a, 5b, 5c and 5d are respectively the stereogram of connector, front view, top view, and side view.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model of present invention protection
Enclose.
Term " first ", " second ", " 3rd " in description and claims of this specification and above-mentioned accompanying drawing etc. are
For distinguishing different objects, rather than for describing particular order.Additionally, term " comprising " and " having " and they are any
Deformation, it is intended that covering is non-exclusive to be included.For example contain process, method, system, the product of series of steps or unit
Or equipment is not limited to the step of having listed or unit, but alternatively also include the step of not listing or unit, or can
Selection of land also includes for these processes, method, product or other intrinsic steps of equipment or unit.
Below by specific embodiment, it is described in detail respectively.
Fig. 1 is refer to, the embodiment of the present invention provides a kind of optical interconnected structure for multi-channel parallel optical coupling, it may include
Following component：Fiber array 10, fiber stub 20, microlens array 30, and, connector 40.
As shown in Fig. 2 being the structural representation of fiber array 10；As shown in figure 3, being the structural representation of fiber stub 20
Figure；As shown in figures 4 a and 4b, it is respectively the front view and side view of microlens array 30；As shown in Fig. 5 a, 5b, 5c and 5d,
It is respectively the stereogram of the connector 40, front view, top view, and side view.
Wherein, the fiber array 10 includes a plurality of optical fiber 101, and the fiber stub 20 includes multiple lock pin holes, described
Microlens array 30 includes multiple lenticules 301, and a plurality of optical fiber 101 is inserted in the multiple lock pin hole, the multiple micro-
Lens 301 and the multiple lock pin hole correspond and set, the connector 40 be provided with two stepped holes 41 positioned at two ends with
And the through hole 42 of the described two stepped holes of connection, the fiber stub 20 and the microlens array 30 are plugged into described two respectively
In individual stepped hole 41.
Described two stepped holes 41 include the first step hole 411 for connecting the fiber stub 20, and for connecting
The second step hole 422 of the microlens array 30, in view of the size of the fiber stub 20 and the microlens array 30 is not
Together, the size in the first step hole 411 and the second step hole 422, including depth length in other words, different, tool
Body value according to practical application scene it needs to be determined that.
It should be noted that microlens array 30 is the inside for being located at connector 40 when being adhesively fixed, therefore, used in Fig. 1
Dotted line is represented；A plurality of optical fiber 101 is also represented by dashed line also in inside.
In preferred embodiment, a plurality of optical fiber 101, the multiple lock pin hole and the multiple lenticule 301 are equal
For 1 × N is set, N is equal to 12 or 4 or 8 or 24 or 48；The end plane angle of the optical fiber 101 is 0 ° or 8 °.When end face into oblique eight
When spending, return loss can be higher than plane, when different scenes are applied to, can select using 0 ° or 8 °.Its
In its implementation method, a plurality of optical fiber 101, the multiple lock pin hole and the multiple lenticule 301 can also be adopted as 2 ×
N, or the mode such as 3 × N is set, or even can also use other layout type, and this is not limited herein.In addition, at some
In special application scenarios, the value of the N can also be not limited to above-mentioned 12 or 4 or 8 or 24 or 48.Herein, using 1
× N is illustrated as a example by setting.
Preferably, the microlens array 30 is to Jiao that the distance of the end face of the optical fiber 101 is the lenticule 301
Away from, can improve it is outer enter light to fiber array 10 coupling efficiency.
In some embodiments of the invention, the fiber array 10 and the fiber stub 20, the fiber stub 20 and institute
Connector 40, and the microlens array 30 and the connector 40 are stated, thermosetting epoxy resin can be respectively adopted gluing
Knot is fixed, for example, specifically can be fixed using 353ND glue.After being fixed using 353ND glue in, baking oven is put into
In, carry out heat cure.
Fig. 2 is refer to, the fiber array 10 can be laid out using 1 × N, i.e., at grade, N bar optical fiber is set.Can
Choosing, the fiber array 10 can be finished product ribbon fiber, or, or the ribbon fiber that bulk optical fiber is constituted.Banding
One end for connecting the fiber stub 20 of optical fiber needs to be pre-processed, and separates bulk optical fiber 101 one by one, with
Just it is inserted into the lock pin hole of fiber stub 20, after being plugged, fiber array 10 is fixed in fiber stub 20.
Be can be set in some embodiments, on the fiber stub 20 has guide pin 202.
Fig. 3 is refer to, in some embodiments, the fiber stub 20 is specifically as follows AN connector MT lock pins（Referred to as
MT lock pins）, such as including 12 MT lock pins in lock pin hole；Wherein, the ribbon fiber being fixed in MT lock pins is first interspersed in MT and inserts
In core, because lock pin hole and its adjacent lock pin pitch of holes positioning precision are very high, therefore can well ensure the positioning of ribbon fiber
Precision.MT lock pins can also coat one layer of 353ND glue in outer layer, be then attached in connector 40.
In a kind of application scenarios, a diameter of 125 microns of lock pin hole in the AN connector MT lock pins, spacing is
250 microns；Accordingly, a diameter of 125 microns of the lenticule 301 in the microlens array 30, spacing is 250 microns.Such as
It is mentioned above, the end plane angle of the ribbon fiber being fixed in MT lock pins can be 0 ° of plane, or it is finished other
Angle, such as 8 °, also, the angle of every fiber end face of ribbon fiber can be with inconsistent, for 12 core MT in MT lock pins
Typical case's application of lock pin, in 12 optical fiber inserted in the AN connector MT lock pins, for 4 light coupled with PD arrays
Fine end plane angle can be 0 °, and 4 end plane angles of optical fiber for being coupled with VCSEL chip arrays can be 8 °, in addition 4 positions
Can not be used in middle optical fiber.
In some embodiments of the invention, windowing is also provided with the connector 40, to facilitate observation.
Fig. 4 a and Fig. 4 b are refer to, shown microlens array 30 is precision optics, and its edge can apply one layer
353ND glue, is then attached in connector 40.The microlens array 30 can be common convex lens array, some embodiments
In can also replace with fresnel lens array, the focal length of common lenticule is a fixed value, and the focal length of Fresnel Lenses
There can be multiple, so can as needed adjust the device such as VCSEL that the optical interconnected structure of the embodiment of the present invention is connected
The distance of chip array or PD arrays and Fresnel Lenses.In addition, the microlens array 30 can be one or more, when for
When multiple, kept apart with spacer ring between the multiple microlens array 30, multiple microlens arrays 30 can be by external light
Spot size reduces, and more light is obtained, so as to improve coupling efficiency.It should be noted that drawn single micro- in figure
Mirror size not actual size, because lenticule is very small, reader understands and is amplified for convenience in figure.
Refer to shown in Fig. 5 a, 5b, 5c and 5d, be the structural representation of connector 40.In the through hole of the connector 40
Full of air or optical medium, when using optical medium, the refraction of the refractive index of the optical medium between the lenticule
Between the refractive index of rate and the optical fiber, so can further increase the convergence effect to transmission light, reduce the damage of transmission light
Lose, improve coupling efficiency.In other words, refractive index is between the refractive index of the lenticule and the refractive index of the optical fiber
Transparent optical medium, in can be used in the through hole of embodiment of the present invention connector 40.
In some embodiments of the invention, the connector 40 is cuboid rigid connector, and the stepped hole is square platform
Rank hole, two stepped holes one are used for connecing MT lock pins, and another is used for connecing microlens array 30, the through hole in the connector 40
Be one or more, when for one when, it may be that larger through hole, it is allowed to the multiple lock pin hole and the multiple lenticule
Correspond light connects；When for it is multiple when, the multiple through hole respectively with the multiple lock pin hole and the multiple lenticule
Correspond, each through hole allows a pair of lock pin hole light connects corresponding with lenticule.It is to be noted that connector 40 also may be used
To take other form, as long as play microlens array 30 is fixedly connected effect with fiber stub 20, it is not limited to using rectangular
Body rigid connector.
In some embodiments of the invention, the both sides of the connector 40 can have the guiding matched with the fiber stub 20
Hole 43, it is preferred that the diameter of the pilot hole 43 is consistent with the diameter of guide pin 202 in the fiber stub 20.If desired for by this
When connector is docked with the miscellaneous part with guide pin, docking precision can be greatly improved.
What deserves to be explained is, in the embodiment of the present invention：The material of fiber stub 20 can be alloy plastic
（Phenylenesulfide, PPS）；The material of microlens array 30 can be quartz glass or plastics；The material of connector 40
Matter can be metal or alloy or alloy plastic etc..
As described above, a kind of optical interconnected structure for multi-channel parallel optical coupling is the embodiment of the invention provides, its tool
There is following technique effect：
First, fiber end face need not be processed to form the optical plane of special angle, such as 45 °.Optical fiber end face angle in the present invention
Spend is normal 0 ° or 8 °, it is only necessary to be ground according to normal wire jumper grinding steps, it is not necessary to optical fiber micro-strip end
The angle in face carries out Special controlling.So manufacture craft is simple, with low cost, is adapted to the finished product after producing in batches and encapsulating
Small volume.
2nd, fixed fiber array can be using the MT lock pins of batch injection moulding.MT lock pins position hole precision relative to V grooves or
Person's accuracy of grooves is very high, it is only necessary to add glue to fix in MT windowings position all right.Unlike have V grooves or groove location structure that
Sample, optical fiber needs upper and lower both direction stress.Using the MT lock pins of batch injection moulding, cost is cheaper, and positioning accurate
Du Genggao.
3rd, in fiber array and the device for being connected such as array VCSEL（Vertical Cavity Surface
Emitting Laser, vertical cavity surface emitting laser）Or PD（Photo-Diode, photodiode）In the middle of chip coupling
An overall microlens array is added, optical fiber micro-strip can be connected with microlens array by a branch sleeve.Lenticule battle array
The distance for arranging fiber end face is the focal length of lenticule.Enter light to the coupling efficiency of light array outside so improving.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and is not described in certain embodiment
Part, may refer to the associated description of other embodiments.
Above-described embodiment is merely illustrative of the technical solution of the present invention, rather than its limitations；The ordinary skill people of this area
Member should be understood：It can still modify to the technical scheme described in the various embodiments described above, or to which part skill
Art feature carries out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from each reality of the invention
Apply the spirit and scope of a technical scheme.
Claims (10)
1. a kind of optical interconnected structure for multi-channel parallel optical coupling, it is characterised in that including：
Fiber array, fiber stub, microlens array, and, connector；
The fiber array includes a plurality of optical fiber, and the fiber stub includes multiple lock pin holes, and the microlens array includes many
Individual lenticule, a plurality of optical fiber is inserted in the multiple lock pin hole, and the multiple lenticule is with the multiple lock pin hole one by one
It is correspondingly arranged, the connector is provided with the through hole of two stepped holes and the described two stepped holes of connection positioned at two ends, described
Fiber stub and the microlens array are plugged into described two stepped holes respectively.
2. optical interconnected structure according to claim 1, it is characterised in that
The a plurality of optical fiber, the multiple lock pin hole and the multiple lenticule are 1 × N settings, and N is equal to 12 or 4 or 8 or 24
Or 48；The end plane angle of the optical fiber is 0 ° or 8 °.
3. optical interconnected structure according to claim 2, it is characterised in that
The fiber stub is specially including 12 AN connector MT lock pins in lock pin hole；
A diameter of 125 microns of lock pin hole in the AN connector MT lock pins, spacing is 250 microns；Accordingly, it is described micro-
A diameter of 125 microns of lenticule in lens array, spacing is 250 microns；
In 12 optical fiber inserted in the AN connector MT lock pins, for 4 end face angles of optical fiber coupled with PD arrays
It is 0 ° to spend, and 4 end plane angles of optical fiber for being coupled with VCSEL chip arrays are 8 °.
4. optical interconnected structure according to claim 1, it is characterised in that
The microlens array is to the focal length that the distance of the end face of the optical fiber is the lenticule.
5. optical interconnected structure according to claim 1, it is characterised in that
The fiber array is finished product ribbon fiber, or is the ribbon fiber of bulk optical fiber composition.
6. optical interconnected structure according to claim 1, it is characterised in that
The fiber array and the fiber stub, the fiber stub and the connector, and the microlens array and
The connector, is respectively adopted thermosetting epoxy resin glue and is adhesively fixed.
7. optical interconnected structure according to claim 1, it is characterised in that
Air or optical medium are full of in the through hole of the connector, the refractive index of the optical medium is between the lenticule
Between the refractive index of refractive index and the optical fiber.
8. optical interconnected structure according to claim 1, it is characterised in that
The connector is cuboid rigid connector, and the stepped hole is square stepped hole, and the through hole in the connector is
One or more, when for it is multiple when, the multiple through hole is respectively with the multiple lock pin hole and the multiple lenticule one by one
Correspondence.
9. optical interconnected structure according to claim 1, it is characterised in that
The both sides of the connector have the pilot hole matched with the fiber stub, the diameter of the pilot hole and the optical fiber
The diameter of guide pin is consistent in lock pin.
10. optical interconnected structure according to claim 1, it is characterised in that
The microlens array is common convex lens array or fresnel lens array, and the microlens array is one or many
It is individual, when for multiple, kept apart with spacer ring between the multiple microlens array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710131727.7A CN106873094A (en) | 2017-03-07 | 2017-03-07 | A kind of optical interconnected structure for multi-channel parallel optical coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710131727.7A CN106873094A (en) | 2017-03-07 | 2017-03-07 | A kind of optical interconnected structure for multi-channel parallel optical coupling |
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| CN106873094A true CN106873094A (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710131727.7A Pending CN106873094A (en) | 2017-03-07 | 2017-03-07 | A kind of optical interconnected structure for multi-channel parallel optical coupling |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416773A (en) * | 2018-04-29 | 2019-11-05 | 深南电路股份有限公司 | A kind of connector and electronic device |
| CN110579840A (en) * | 2018-06-09 | 2019-12-17 | 深南电路股份有限公司 | optical transmission device and optical transmission system |
| WO2020133951A1 (en) * | 2018-12-26 | 2020-07-02 | Huawei Technologies Co., Ltd. | Multi-channel mode converters with silicon lenses |
| US11543599B2 (en) | 2018-10-15 | 2023-01-03 | Corning Research & Development Corporation | Ferrules including keying features and fiber optic junctions including the same |
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| US20040264884A1 (en) * | 2003-06-30 | 2004-12-30 | Yue Liu | Compact package design for vertical cavity surface emitting laser array to optical fiber cable connection |
| CN101228466A (en) * | 2005-04-04 | 2008-07-23 | 莫列斯公司 | Multifiber MT-type connector and ferrule comprising V-shaped groove lens array and method of manufacture |
| CN103885140A (en) * | 2014-04-15 | 2014-06-25 | 昆山柯斯美光电有限公司 | Chip array and parallel optical fiber passively-coupled optical assembly and assembling method of chip array and parallel optical fiber passively-coupled optical assembly |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5963691A (en) * | 1997-07-28 | 1999-10-05 | Molex Incorporated | Alignment system in a connector ferrule for a fiber optic cable |
| US20040264884A1 (en) * | 2003-06-30 | 2004-12-30 | Yue Liu | Compact package design for vertical cavity surface emitting laser array to optical fiber cable connection |
| CN101228466A (en) * | 2005-04-04 | 2008-07-23 | 莫列斯公司 | Multifiber MT-type connector and ferrule comprising V-shaped groove lens array and method of manufacture |
| CN103885140A (en) * | 2014-04-15 | 2014-06-25 | 昆山柯斯美光电有限公司 | Chip array and parallel optical fiber passively-coupled optical assembly and assembling method of chip array and parallel optical fiber passively-coupled optical assembly |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416773A (en) * | 2018-04-29 | 2019-11-05 | 深南电路股份有限公司 | A kind of connector and electronic device |
| CN110579840A (en) * | 2018-06-09 | 2019-12-17 | 深南电路股份有限公司 | optical transmission device and optical transmission system |
| US11543599B2 (en) | 2018-10-15 | 2023-01-03 | Corning Research & Development Corporation | Ferrules including keying features and fiber optic junctions including the same |
| WO2020133951A1 (en) * | 2018-12-26 | 2020-07-02 | Huawei Technologies Co., Ltd. | Multi-channel mode converters with silicon lenses |
| US11754788B2 (en) | 2018-12-26 | 2023-09-12 | Huawei Technologies Co., Ltd. | Multi-channel mode converters with silicon lenses |
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Application publication date: 20170620 |