CN108429598A - A kind of device and light path system reducing multi-wavelength crosstalk - Google Patents
A kind of device and light path system reducing multi-wavelength crosstalk Download PDFInfo
- Publication number
- CN108429598A CN108429598A CN201810473731.6A CN201810473731A CN108429598A CN 108429598 A CN108429598 A CN 108429598A CN 201810473731 A CN201810473731 A CN 201810473731A CN 108429598 A CN108429598 A CN 108429598A
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- Prior art keywords
- crosstalk
- wavelength
- laser
- reducing multi
- path system
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- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000013307 optical fiber Substances 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
-
- 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
- G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
Abstract
The present invention relates to optical technical fields, and in particular to a kind of device and light path system reducing multi-wavelength light crosstalk.A kind of device reducing multi-wavelength crosstalk is proposed, including several pieces of metal baffles, the metal baffle may be contained within the boundary of adjacent two-way laser beam, the wavelength crosstalk for being isolated between adjacent laser light beam.In addition it also proposed a kind of light path system reducing multi-wavelength crosstalk, including multiple chip of laser, collimation lens identical with chip of laser quantity, multiplexer, plus lens and optical fiber, the device for reducing multi-wavelength crosstalk is provided between the collimation lens and the multiplexer.Drop crosstalk device using the present invention can effectively prevent the crosstalk between each road laser beam.In the light path system of the present invention, the drop crosstalk device being arranged between collimation lens and multiplexer effectively completely cuts off stray light multichannel light beam, is conducive to improve coupling efficiency, improves production yield.
Description
Technical field
The present invention relates to optical technical fields, and in particular to a kind of device and light path system reducing multi-wavelength light crosstalk.
Background technology
100G LAN WDM TOSA are shone by the laser of 4 road 25Gbps different rates wavelength and are formed, and 4 channels are passed
It is defeated, ensure that the independent high efficiency of transmission of each laser is particularly important；And the wavelength interval between 4 road laser channelings and channel is very
It is small, only 5nm.When transmission rate rises to 25Gbps by traditional 10Gbps, crosstalk can become with the promotion of signal rate
Must be fairly obvious, it will be extremely important during the following High Speed System measures that can bring more puzzlements, crosstalk in high-speed light interconnection level
Link.
Crosstalk test is extremely complex, and many companies provide the jitter test side of some completely new separable crosstalks at present
Method, such as using sampling oscilloscope, error analyzer, crosstalk can be largely improved using means such as jitter analysis softwares
The accuracy of measurement is made more accurate so that finally testing the shake index of electric signal or optical signal, eye pattern.So
And the fundamental means for reducing crosstalk is to avoid the puzzlement that crosstalk is brought as possible in the light path design stage, it can be seen that how to design
Stage solves crosstalk and is a problem to be solved.
Invention content
To solve problems of the prior art, the present invention provides a kind of device reducing multi-wavelength crosstalk and uses
The light path system of the device reduces the device of multi-wavelength crosstalk using metal baffle isolation adjacent beams, between the light beam avoided
Wavelength crosstalk；It reduces in the light path system of multi-wavelength crosstalk using collimation lens and drop crosstalk device, can effectively reduce crosstalk,
Improve coupling efficiency.
To achieve the above object, the technical solution adopted by the present invention is：A kind of device reducing multi-wavelength crosstalk is proposed,
Including several pieces of metal baffles, every piece of metal baffle may be contained within the boundary of adjacent two-way laser beam, for being isolated
Wavelength crosstalk between adjacent laser light beam.
The metal baffle is all fixed on one piece of backboard, and metal baffle spaced and parallel arrangement on the backboard.
The metal baffle is stainless steel shoe.
It also proposed a kind of light path system reducing multi-wavelength crosstalk, including multiple chip of laser and chip of laser
The identical collimation lens of quantity, multiplexer, plus lens and optical fiber, are provided between the collimation lens and the multiplexer
Crosstalk device drops；
The laser alignment that the collimation lens is used to send out in laser is collimated light beam；
The drop crosstalk device is used to adjacent two beams collimated light beam being isolated, and reduces the wavelength crosstalk between adjacent, parallel light beam；
The multiplexer is used to multi beam collimated light beam being integrated into single beam；
The plus lens is for coupling in the optical fiber single beam to.
The drop crosstalk device includes several pieces of metal baffles, and it is parallel that every piece of metal baffle may be contained within adjacent two-way
The boundary of light beam.
The metal baffle is all fixed on one piece of backboard, metal baffle spaced and parallel arrangement on the backboard, and
It is fixed between collimation lens and multiplexer by the backboard.
The metal baffle is stainless steel shoe.
The present invention provides a kind of device reducing multi-wavelength crosstalk, be placed in lens light-emitting window and multiplexer it
Between, the baffle of stainless steel can effectively prevent the crosstalk between each road laser beam.It is more in the light path system of the present invention
The multichannel light beam that a laser is sent out is converted into collimated light beam after corresponding collimation lens, since collimated light beam is unable to reach
The absolutely depth of parallelism, may be influenced after device surface emits by other stray lights, enter wave in laser beam
The middle device designed effectively completely cuts off stray light multichannel light beam through the invention before division multiplexer, and guarantee passes through lens
The consistency of light beam afterwards, and then the consistency of multi beam wavelength light at light-emitting window is improved, rear end plus lens hot spot is incident in reduction
Size is conducive to improve coupling efficiency, improves production yield.
Description of the drawings
Fig. 1 is a kind of apparatus structure schematic diagram preventing multichannel optical crosstalk provided in an embodiment of the present invention；
Fig. 2 is a kind of light path system preventing multichannel optical crosstalk provided in an embodiment of the present invention；
In figure：Crosstalk device, 31- backboards, 32- metal baffles, 4- multiplexers, 5- drop in 1- chip of laser, 2- collimation lenses, 3-
Plus lens, 6- optical fiber.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings.
The device of reduction multi-wavelength crosstalk as shown in Figure 1, drop crosstalk device 3 is by backboard 31 and spaced and parallel is fixed on the back of the body
3 pieces of metal baffles 32 composition on plate 31, forms 3 U-shaped groove structures, and metal baffle 32 uses stainless steel, every block of metal
Baffle 32 may be contained within the boundary of adjacent two-way laser beam, pass through through U type slot per road light beam, between adjacent two light beams
Metal baffle 32 be used to that wavelength crosstalk between light beam to be isolated.
Shown in Fig. 2 is the light path system of 100Gbps LAN WDM TOSA, including 4 chip of laser 1 and laser
The identical collimation lens 2 of number of chips, multiplexer 4, plus lens 5 and optical fiber 6, are arranged between collimation lens 2 and multiplexer 4
There is drop crosstalk device 3.Drop crosstalk device 3 is made of backboard 31 and spaced and parallel 3 be fixed on backboard 32 piece metal baffle 32,
Form 3 U-shaped groove structures.The backboard 32 for dropping crosstalk device 3 is fixed using sticker dress between collimation lens 2 and multiplexer 4, backboard
31 use helps to facilitate the attachment of drop crosstalk device 3.Every piece of metal baffle 32 may be contained within adjacent two-way laser beam
Boundary, the distance between adjacent metal baffle 32 are the light spacing for the directional light being emitted by collimation lens 2, and effect is
In order to preferably completely cut off the crosstalk between adjacent laser light beam and effectively absorb spuious light action.
The light path system of Fig. 2 is described as follows：The chip of laser 1 of 4 different wave lengths shines simultaneously, saturating by collimating
Become directional light after mirror 2, directional light avoids optical crosstalk by drop crosstalk device 3, multiplexer is incident on by the directional light of U-type groove
It is integrated into light beam in 4, then converges in plus lens 5, is eventually coupled in optical fiber 6.Wherein drop crosstalk device 3 is placed in standard
Directly between lens 2 and multiplexer 4, the optical crosstalk between 4 road light and stray light is effectively completely cut off so that go out by multiplexer 4
The hot spot angle of divergence for penetrating light is small, is conducive to converge in plus lens 5, and then improve coupling efficiency, improves the good of product
Rate.
The technical principle of invention is described above in association with specific embodiment.These descriptions are intended merely to explain the original of the present invention
Reason, and it cannot be construed to limiting the scope of the invention in any way.Based on the explanation herein, those skilled in the art
Member would not require any inventive effort the other specific implementation modes that can associate the present invention, these modes fall within this
Within the protection domain of invention.
Claims (7)
1. a kind of device reducing multi-wavelength crosstalk, it is characterised in that：Including several pieces of metal baffles, every piece of metal baffle
The boundary that may be contained within adjacent two-way laser beam, the wavelength crosstalk for being isolated between adjacent laser light beam.
2. a kind of device reducing multi-wavelength crosstalk according to claim 1, it is characterised in that：The metal baffle is whole
It is fixed on one piece of backboard, and metal baffle spaced and parallel arrangement on the backboard.
3. a kind of device reducing multi-wavelength crosstalk according to claim 1 or 2, it is characterised in that：The metal baffle
For stainless steel shoe.
4. a kind of light path system reducing multi-wavelength crosstalk, it is characterised in that：Including multiple chip of laser and chip of laser
The identical collimation lens of quantity, multiplexer, plus lens and optical fiber, are provided between the collimation lens and the multiplexer
Crosstalk device drops；
The laser alignment that the collimation lens is used to send out in laser is collimated light beam；
The drop crosstalk device is used to adjacent two beams collimated light beam being isolated, and reduces the wavelength crosstalk between adjacent, parallel light beam；
The multiplexer is used to multi beam collimated light beam being integrated into single beam；
The plus lens is for coupling in the optical fiber single beam to.
5. a kind of light path system reducing multi-wavelength crosstalk according to claim 4, it is characterised in that：The drop crosstalk dress
It sets including several pieces of metal baffles, every piece of metal baffle may be contained within the boundary of adjacent two route parallel beams.
6. a kind of light path system reducing multi-wavelength crosstalk according to claim 5, it is characterised in that：The metal baffle
It is all fixed on one piece of backboard, metal baffle spaced and parallel arrangement on the backboard, and standard is fixed on by the backboard
Directly between lens and multiplexer.
7. a kind of light path system reducing multi-wavelength crosstalk according to claim 5 or 6, it is characterised in that：The metal
Baffle is stainless steel shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810473731.6A CN108429598A (en) | 2018-05-17 | 2018-05-17 | A kind of device and light path system reducing multi-wavelength crosstalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810473731.6A CN108429598A (en) | 2018-05-17 | 2018-05-17 | A kind of device and light path system reducing multi-wavelength crosstalk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108429598A true CN108429598A (en) | 2018-08-21 |
Family
ID=63163446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810473731.6A Pending CN108429598A (en) | 2018-05-17 | 2018-05-17 | A kind of device and light path system reducing multi-wavelength crosstalk |
Country Status (1)
| Country | Link |
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| CN (1) | CN108429598A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110133623A (en) * | 2019-05-05 | 2019-08-16 | 深圳市速腾聚创科技有限公司 | Laser beam emitting device, laser radar and intelligent apparatus |
| CN111175890A (en) * | 2018-11-12 | 2020-05-19 | 国科光芯(海宁)科技股份有限公司 | Optical phased array integrated chip |
| CN114879208A (en) * | 2022-06-30 | 2022-08-09 | 北京摩尔芯光半导体技术有限公司 | Frequency modulation continuous wave laser radar system |
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| US7184621B1 (en) * | 2003-12-21 | 2007-02-27 | Lijun Zhu | Multi-wavelength transmitter optical sub assembly with integrated multiplexer |
| CN202794615U (en) * | 2012-06-26 | 2013-03-13 | 一诺仪器（威海）有限公司 | Light receiving and transmitting integrated assembly |
| CN203301489U (en) * | 2013-07-05 | 2013-11-20 | 青岛海信宽带多媒体技术有限公司 | Light emitting device possessing multipath wavelength channels, light receiving element possessing multipath wavelength channels and optical module |
| CN105071196A (en) * | 2015-07-21 | 2015-11-18 | 北京杏林睿光科技有限公司 | Narrow linewidth beam combination module and multi-wavelength Raman laser provided with same |
| CN206096703U (en) * | 2016-09-27 | 2017-04-12 | 深圳暴风统帅科技有限公司 | Direct type backlight module and display device |
| CN208028908U (en) * | 2018-05-17 | 2018-10-30 | 大连优迅科技有限公司 | A kind of device and light path system reducing multi-wavelength crosstalk |
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2018
- 2018-05-17 CN CN201810473731.6A patent/CN108429598A/en active Pending
Patent Citations (6)
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| US7184621B1 (en) * | 2003-12-21 | 2007-02-27 | Lijun Zhu | Multi-wavelength transmitter optical sub assembly with integrated multiplexer |
| CN202794615U (en) * | 2012-06-26 | 2013-03-13 | 一诺仪器（威海）有限公司 | Light receiving and transmitting integrated assembly |
| CN203301489U (en) * | 2013-07-05 | 2013-11-20 | 青岛海信宽带多媒体技术有限公司 | Light emitting device possessing multipath wavelength channels, light receiving element possessing multipath wavelength channels and optical module |
| CN105071196A (en) * | 2015-07-21 | 2015-11-18 | 北京杏林睿光科技有限公司 | Narrow linewidth beam combination module and multi-wavelength Raman laser provided with same |
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| CN208028908U (en) * | 2018-05-17 | 2018-10-30 | 大连优迅科技有限公司 | A kind of device and light path system reducing multi-wavelength crosstalk |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175890A (en) * | 2018-11-12 | 2020-05-19 | 国科光芯(海宁)科技股份有限公司 | Optical phased array integrated chip |
| CN111175890B (en) * | 2018-11-12 | 2022-04-19 | 国科光芯(海宁)科技股份有限公司 | Optical phased array integrated chip |
| CN110133623A (en) * | 2019-05-05 | 2019-08-16 | 深圳市速腾聚创科技有限公司 | Laser beam emitting device, laser radar and intelligent apparatus |
| CN110133623B (en) * | 2019-05-05 | 2021-05-14 | 深圳市速腾聚创科技有限公司 | Laser emitting device, laser radar and intelligent device |
| CN114879208A (en) * | 2022-06-30 | 2022-08-09 | 北京摩尔芯光半导体技术有限公司 | Frequency modulation continuous wave laser radar system |
| CN114879208B (en) * | 2022-06-30 | 2022-11-01 | 北京摩尔芯光半导体技术有限公司 | Frequency modulation continuous wave laser radar system |
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Address after: No. 125, high energy street, high tech park, Dalian, Liaoning Province, 116000 Applicant after: Dalian Youxun Technology Co., Ltd Address before: No. 125, high energy street, high tech park, Dalian, Liaoning Province, 116000 Applicant before: DALIAN YOUXUN TECHNOLOGY Co.,Ltd. |
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