CN205643785U - Light receiving device - Google Patents
Light receiving device Download PDFInfo
- Publication number
- CN205643785U CN205643785U CN201620390491.XU CN201620390491U CN205643785U CN 205643785 U CN205643785 U CN 205643785U CN 201620390491 U CN201620390491 U CN 201620390491U CN 205643785 U CN205643785 U CN 205643785U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- light
- detector chip
- pickup apparatus
- photo detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000013307 optical fiber Substances 0.000 claims abstract description 61
- 230000003287 optical effect Effects 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 235000009537 plain noodles Nutrition 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000004043 responsiveness Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model discloses a light receiving device, including TO base, PD gasket, light detector chip and coaxial optical fiber structure, the TO base the PD gasket and the mutual electric connection of light detector chip, the coaxial optical fiber structure includes optic fibre and socket, socket sleeve connect in the light -emitting end of optic fibre, the income plain noodles of optical detection chip is vertical setting, the socket sets up in the horizontal direction slope, the light -emitting terminal surface of optic fibre sets up in the slope of vertical direction, make via the light energy that jets out of the light -emitting terminal surface of optic fibre is jeted into enough perpendicularly the income plain noodles of light detector chip. The utility model discloses the use that technical scheme can save lens through this light receiving arrangement realizes simplifying the structure, saves the cost, improves the response, improves the effect of light return loss.
Description
Technical field
This utility model relates to technical field of optical fiber communication, particularly to a kind of optical pickup apparatus.
Background technology
Along with the development of communication technology, in order to realize Large Copacity, the information transmission of distance, fiber optic communication
Having obtained quick development, optical fiber telecommunications system is mainly by transmitter, optical fiber, and receiver forms.And
In traditional optical plan, the optical signal in optical fiber needs to arrive the light of receiver through an optical lens
Detector chip, it is then desired to carry out special handling to use complex structure design and light to optical fiber
Learn design.So, can there is problems in that along with turn of the market the most with keen competition, light is connect
Receiving the performance of device, price, the requirement of quality is more and more higher, arranges an optical lens and makes cost
Raise, responsiveness, quality, the requirement of the light receiving element that light return loss does not reaches yet.
Utility model content
Main purpose of the present utility model is to provide a kind of optical pickup apparatus, it is intended to simplify optical pickup apparatus
Structure, improves responsiveness, improves light return loss.
For achieving the above object, the optical pickup apparatus that the utility model proposes, including TO base, PD pad
Sheet, photo detector chip and coaxial optical fiber structure；
Described TO base, described PD pad and described photo detector chip are electrically connected with each other；
Described coaxial optical fiber structure includes that what optical fiber and socket, described jack sleeve be connected to described optical fiber goes out light end,
The incidence surface of described light detecting chip is in being vertically arranged, and described socket is obliquely installed in horizontal direction,
The light output end of described optical fiber is obliquely installed in vertical direction, makes penetrating of the light output end via described optical fiber
Go out light and can vertically inject the incidence surface of described photo detector chip.
Alternatively, the incidence surface of described photo detector chip is right against the light output end of described optical fiber, described
Spacing range between incidence surface and the light output end of described optical fiber of photo detector chip be 0.11mm extremely
0.2mm。
Alternatively, described socket is 2 °～8 ° in the tilt angle ranges of horizontal direction, described optical fiber go out light end
The tilt angle ranges in vertical direction of end face be 4 °～13 °, make the injection light of described optical fiber in level
Tilt angle ranges on direction is 0 ° ± 1 °.
Alternatively, described optical pickup apparatus also includes that PD body, described coaxial optical fiber structure include outer tube body,
Described outer tube body is plugged in described PD body, and described PD body uses hot-setting adhesive to be connected with described outer tube body.
Alternatively, described PD body uses soldering and sealing to be connected with described TO base.
Alternatively, described TO base and described PD pad by conductive adhesive, described PD pad with
Described photo detector chip passes through conductive adhesive.
Alternatively, the centrage of the centrage of the incidence surface of described photo detector chip and described TO base
Distance difference scope is 0 ± 100 μm.
Alternatively, the centrage of the incidence surface of described photo detector chip and the centrage weight of described TO base
Close.
The optical pickup apparatus that technical solutions of the utility model provide, can be saved by this light receiver device
The use of lens, it is achieved simplify structure, cost-effective, improve responsiveness, improve the effect of light return loss.
Concrete, light, in transmitting procedure, is exported by the light output end of optical fiber, because the light in optical fiber is passing
Broadcasting is to be carried out by total reflection, and therefore, its injection light certainly exists certain angle.And by arrange by
Socket is in horizontally arranged certain angle of inclination so that optical fiber has certain bending, and then makes light
Changing angle at this bending part, meanwhile, the light output end of optical fiber is inclined to set on vertical direction, makes
Light output fiber light output end after refraction angle meet and impinge perpendicularly on entering of photo detector chip
Bright finish.Above-mentioned angle of inclination is according to testing in advance so that injection light can impinge perpendicularly on photo-detector
The incidence surface of chip, and then increase injection light and incide the luminous flux of photo detector chip, improve responsiveness,
Can prevent from penetrating light to be reflected back on the incidence surface of photo detector chip in optical fiber simultaneously, this improves
The light return loss of injection light.Meanwhile, optical fiber and the direct Butt-coupling of photo detector chip, it is possible to reduce middle
The loss of light path, the optical responsivity reached capacity.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that,
Accompanying drawing in describing below is only embodiments more of the present utility model, for ordinary skill people
From the point of view of Yuan, on the premise of not paying creative work, it is also possible to obtain according to the structure shown in these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is the structural representation of this utility model optical pickup apparatus one embodiment；
Fig. 2 is the partial enlarged drawing in Fig. 1 at A；
Fig. 3 is the index path of optical pickup apparatus one embodiment in Fig. 1；
Fig. 4 is optical pickup apparatus photo detector chip and the schematic diagram at TO base one visual angle in Fig. 1.
Drawing reference numeral illustrates:
| 100 | Optical pickup apparatus | 41 | Optical fiber |
| 10 | TO base | 41a | Light output end |
| 20 | PD pad | 42 | Socket |
| 30 | Photo detector chip | 43 | Outer tube body |
| 31 | Incidence surface | 50 | PD body |
| 40 | Coaxial optical fiber structure |
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings into
One step explanation.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technology in this utility model embodiment
Scheme is clearly and completely described, it is clear that described embodiment is only of the present utility model one
Section Example rather than whole embodiments.Based on the embodiment in this utility model, this area is general
The every other embodiment that logical technical staff is obtained under not making creative work premise, broadly falls into
The scope of this utility model protection.
It is to be appreciated that directional instruction in this utility model embodiment (such as upper and lower, left and right,
It is forward and backward ...) it is only used for explanation phase under a certain particular pose (as shown in drawings) between each parts
To position relationship, motion conditions etc., if this particular pose changes, then directionality indicates also
Change the most therewith.
If it addition, the description relating to " first ", " second " etc. in this utility model is only used for describing mesh
, and it is not intended that instruction or imply its relative importance or implicit indicate indicated technical characteristic
Quantity.Thus, define " first ", the feature of " second " can express or implicitly include to
Few this feature.It addition, the technical scheme between each embodiment can be combined with each other, but necessary
It is based on those of ordinary skill in the art are capable of, when the combination of technical scheme occurs conflicting
Will be understood that when maybe cannot realize that the combination of this technical scheme does not exists, the most not in this utility model requirement
Protection domain within.
The utility model proposes a kind of optical pickup apparatus 100.
In this utility model embodiment, (wherein, ox direction is horizontal direction, oy side as shown in Figure 1
To for vertical direction), the optical pickup apparatus 100 that the utility model proposes, including TO base 10, PD pad
Sheet 20, photo detector chip 30 and coaxial optical fiber structure 40；
Described TO base 10, described PD pad 20 and described photo detector chip 30 mutually electrically connect
Connect；
Described coaxial optical fiber structure 40 includes that optical fiber 41 and socket 42, described socket 42 are socketed on described light
Fine 41 go out light end,
The incidence surface 31 of described light detecting chip is in being vertically arranged, and described socket 42 tilts in horizontal direction
Arranging, the light output end 41a of described optical fiber 41 is obliquely installed in vertical direction, makes via described optical fiber 41
The injection light of light output end 41a can vertically inject the incidence surface 31 of described photo detector chip 30.
Wherein, the incidence surface 31 of described photo detector chip 30 is right against the light output end of described optical fiber 41
41a, between incidence surface 31 and the light output end 41a of described optical fiber 41 of described photo detector chip 30
Spacing range is 0.11mm to 0.2mm.
General, TO base 10 is TO-46 base, can also be other kinds of TO base certainly
10.It is understood that the too big then responsiveness step-down in the inclination angle of the injection light of optical fiber 51, inclination angle is too
Little, light return loss diminishes.For light return loss, owing to it is negative, thus high return loss corresponding be smaller
Value, what low return loss was corresponding is bigger value, is worth the smaller the better.
The optical pickup apparatus 100 of technical solutions of the utility model, can be saved by this optical pickup apparatus 100
The use of lens, it is achieved simplify structure, cost-effective, improve responsiveness, improve the effect of light return loss.
Concrete, light, in transmitting procedure, is exported by the light output end 41a of optical fiber 41, because of optical fiber
Light in 41 is to be carried out by total reflection in propagation, and therefore, its injection light certainly exists certain angle.
And by arranging socket 42 in horizontally arranged certain angle of inclination so that optical fiber 41 has necessarily
Bending, and then make light this bending part change angle, meanwhile, the light output end 41a of optical fiber 41 in
It is inclined to set on vertical direction so that the refraction angle after the light output end 41a of light output fiber 41
Meet the incidence surface 31 impinging perpendicularly on photo detector chip 30.Above-mentioned angle of inclination according to testing in advance,
Make to penetrate light and can impinge perpendicularly on the incidence surface 31 of photo detector chip 30, and then increase injection light enters
It is mapped to the luminous flux of photo detector chip 30, improves responsiveness, can prevent from penetrating light at photo-detector simultaneously
It is reflected back in optical fiber 41 on the incidence surface 31 of chip 30, therefore, improves the return loss of injection light.Meanwhile,
Optical fiber 41 and the direct Butt-coupling of photo detector chip 30, it is possible to reduce the loss of middle light path, reach
The optical responsivity of the limit.
With reference to Fig. 1 and Fig. 2, described socket 42 is 2 °～8 ° in tilt angle ranges α of horizontal direction, described
The angle of inclination beta scope in vertical direction of the exiting surface of optical fiber 41 is 4 °～13 °, makes described optical fiber 41
Injection light tilt angle ranges in horizontal direction be 0 ° ± 1 °.
Wherein, described socket 42 is ceramic socket 42, and the light end that goes out of optical fiber 41 is socketed in socket 42,
Socket 42 is 2 °～8 ° in the inclined angle alpha scope of horizontal direction, that is, optical fiber 41 is in level side at this
To tilt angle ranges be 2 °～8 ° so that light at this of optical fiber 41 bending part occur once to change.
The tilt angle ranges in vertical direction of the end face relative to photo detector chip 30 of socket 42 is also
4 °～13 °, it is preferable that between inclination angle and the inclination angle of base of ceramic of the end face going out light end of optical fiber 41
Angle be 6 °～8 °.So, the injection light tilt angle ranges in horizontal direction of the optical fiber 41 that can make
It is 0 ° ± 1 °, because the incidence surface 31 of light detecting chip photo detector chip 30 is in being vertically arranged, therefore light
The incidence surface 31 of detector chip can be normally incident in.In one embodiment, photo detector chip 30 is added
Carry the voltage of-5V～-12V, use the light source of 1550nm to be alternatively coupled to responsiveness and be more than 0.95A/W,
The light return loss technical merit less than-40dB.
With reference to Fig. 1, described optical pickup apparatus 100 also includes PD (photo detectors, photo-detector)
Body, described coaxial optical fiber structure 40 includes that outer tube body 43, described outer tube body 43 are plugged in described PD
Body 50, described PD body 50 uses hot-setting adhesive to be connected with described outer tube body 43.
Concrete, the light output end 41a of optical fiber 41 is coupled with the incidence surface 31 of photo detector chip 30
After alignment, first using optic-solidified adhesive to fix in advance, glue curing length is less than outer tube body 43 and PD body
Between 50 the 1/4 of gap girth, then use heat-curable glue to fill full gap, then reuse photocuring
The gap between PD body 50 and outer tube body 43 filled by glue, so can realize good air-tightness requirement,
High-responsivity, the technology requirement of high return loss.
Further, described PD body 50 uses soldering and sealing to be connected with described TO base 10.So,
Use sealing welding technique for extra can ensure good air-tightness requirement.
With reference to Fig. 1, described TO base 10 and described cushion block are by conductive adhesive, described cushion block and PD
Pad 20 is by conductive adhesive, and described PD pad 20 and described photo detector chip 30 are by conduction
Gluing connect.
Wherein, conducting resinl can use H20E or 84-1 glue, so can realize good conduction of heat
And electrical connection, and ensure good thermal expansion matching characteristic.
With reference to Fig. 4, the centrage of the incidence surface 31 of described photo detector chip 30 and described TO base 10
The distance difference scope of centrage be 0 ± 100 μm.
Concrete, in x-axis and y-axis direction, in the centrage TO base 10 of photo detector chip 30
The distance difference scope of heart line is 0 ± 100 μm.
Further, the centrage of the incidence surface 31 of described photo detector chip 30 and described TO base
The centrage of 10 overlaps.That is, photo detector chip 30 centerline is in the center of circle of TO base 10.
So so that coaxial optical fiber structure 40 can be in centre bit with photo detector chip 30 in being directed at
Put, prevent product from occurring that the uneven optical responsivity caused of internal stress refers to when extraneous variation of ambient temperature
Mark declines.
The foregoing is only preferred embodiment of the present utility model, not thereby limit of the present utility model specially
Profit scope, every equivalent structure transformation utilizing this utility model description and accompanying drawing content to be made, or directly
Connect or be indirectly used in other relevant technical fields, be the most in like manner included in patent protection of the present utility model
In the range of.
Claims (8)
1. an optical pickup apparatus, it is characterised in that include TO base, PD pad, photo-detector
Chip and coaxial optical fiber structure；
Described TO base, described PD pad and described photo detector chip are electrically connected with each other；
Described coaxial optical fiber structure includes that what optical fiber and socket, described jack sleeve be connected to described optical fiber goes out light end,
The incidence surface of described light detecting chip is vertically arranged, and described socket is obliquely installed in horizontal direction, institute
The light output end stating optical fiber is obliquely installed in vertical direction, makes the injection of light output end via described optical fiber
Light can vertically inject the incidence surface of described photo detector chip.
2. optical pickup apparatus as claimed in claim 1, it is characterised in that described photo detector chip
Incidence surface is right against the light output end of described optical fiber, the incidence surface of described photo detector chip and described optical fiber
Light output end between spacing range be 0.11mm to 0.2mm.
3. optical pickup apparatus as claimed in claim 1, it is characterised in that described socket is in horizontal direction
Tilt angle ranges be 2 °～8 °, the inclination angle in vertical direction of the end face going out light end of described optical fiber
Scope is 4 °～13 °, and the injection light tilt angle ranges in horizontal direction making described optical fiber is 0 ° ± 1 °.
4. optical pickup apparatus as claimed in claim 1, it is characterised in that described optical pickup apparatus also wraps
Including PD body, described coaxial optical fiber structure includes that outer tube body, described outer tube body are plugged in described PD pipe
Body, described PD body uses hot-setting adhesive to be connected with described outer tube body.
5. optical pickup apparatus as claimed in claim 4, it is characterised in that described PD body is with described
TO base uses soldering and sealing to connect.
6. optical pickup apparatus as claimed in claim 4, it is characterised in that described TO base is with described
PD pad passes through conductive adhesive, and described PD pad and described photo detector chip pass through conductive adhesive.
7. optical pickup apparatus as claimed in claim 1, it is characterised in that described photo detector chip
The centrage of incidence surface is 0 ± 100 μm with the distance difference scope of the centrage of described TO base.
8. optical pickup apparatus as claimed in claim 1, it is characterised in that described photo detector chip
The centrage of incidence surface overlaps with the centrage of described TO base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620390491.XU CN205643785U (en) | 2016-05-03 | 2016-05-03 | Light receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620390491.XU CN205643785U (en) | 2016-05-03 | 2016-05-03 | Light receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205643785U true CN205643785U (en) | 2016-10-12 |
Family
ID=57048797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620390491.XU Expired - Fee Related CN205643785U (en) | 2016-05-03 | 2016-05-03 | Light receiving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205643785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965187A (en) * | 2021-03-16 | 2021-06-15 | 绵阳精恒光通讯有限公司 | Optical fiber coupling method based on novel connector |
| CN112965186A (en) * | 2021-03-16 | 2021-06-15 | 绵阳精恒光通讯有限公司 | Novel formula optic fibre connecting portion, connector lug and optoelectronic equipment cut straightly |
-
2016
- 2016-05-03 CN CN201620390491.XU patent/CN205643785U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965187A (en) * | 2021-03-16 | 2021-06-15 | 绵阳精恒光通讯有限公司 | Optical fiber coupling method based on novel connector |
| CN112965186A (en) * | 2021-03-16 | 2021-06-15 | 绵阳精恒光通讯有限公司 | Novel formula optic fibre connecting portion, connector lug and optoelectronic equipment cut straightly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20210503 |