CN111175914A - Transmit-receive lens and single-channel active optical cable - Google Patents
Transmit-receive lens and single-channel active optical cable Download PDFInfo
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- CN111175914A CN111175914A CN202010069367.4A CN202010069367A CN111175914A CN 111175914 A CN111175914 A CN 111175914A CN 202010069367 A CN202010069367 A CN 202010069367A CN 111175914 A CN111175914 A CN 111175914A
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- transmitting
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- 230000003287 optical effect Effects 0.000 title claims abstract description 97
- 239000013307 optical fiber Substances 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 14
- 238000010168 coupling process Methods 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000012827 research and development Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—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
- G02B6/4246—Bidirectionally operating package structures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a transmitting-receiving lens and a single-channel active optical cable. The lens is provided with an integrally formed lens base body, the lens base body is provided with an optical fiber end lens, an optical attenuation section and an optical device end lens on a light path, the optical fiber end lens is provided with optical fiber coupling interfaces which are arranged in parallel from left to right, the optical device end lens is provided with an emitting end face and a receiving end face which are arranged in parallel from left to right, the emitting end face, the optical attenuation section and the optical fiber coupling interface on the corresponding side form an emitting channel, and the receiving end face, the optical attenuation section and the optical fiber coupling interface on the corresponding side form a receiving channel. The active optical cable comprises the receiving-transmitting lens, the laser, the optical detector and the optical fiber input/output port. The lens which is adopted in the existing module and is divided by the transmitting end and the receiving end is replaced by the lens which integrates receiving and transmitting, so that the die sinking cost and the material cost are reduced in the research and development link of the single-channel active optical module; the equipment utilization rate and the efficiency of operators are improved in the production link.
Description
Technical Field
The invention belongs to the field of optical communication, and particularly relates to a transmitting-receiving lens and a single-channel active optical cable.
Background
The active optical cable is composed of integrated photoelectric devices, is used for transmission equipment for high-speed and high-reliability mutual transmission in data centers, high-performance computers, large-capacity memories and other equipment, generally meets an electric interface of an industrial standard, and performs data transmission by internal electric-optical-electric conversion and using the superior performance of the optical cable. With the rapid development of data centers and the field of cloud computing, the demand of active optical cable modules in optical communication increases in a geometric manner, wherein the single-channel active optical cable module is particularly prominent.
However, the lens at the transmitting end and the lens at the receiving end of the existing single-channel active optical cable module need to be opened and customized, due to the problems of cost and capacity of opening the mold, the capacity and the input-output ratio of the single-channel active optical cable module are greatly limited, the capacity of the optical module is improved, the cost is reduced, the bottleneck is formed, new transmitting and receiving lenses and optical schemes need to be designed, the cost of opening the mold of the lens is reduced, the assembly time is shortened, the production efficiency is improved, and the maximization of the input-output ratio is realized.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a transmitting-receiving lens and a single-channel active optical cable, and aims to reduce the die sinking customization cost and improve the assembly efficiency so as to improve the input-output ratio by replacing the transmitting lens and the receiving lens with integrally designed lenses, thereby solving the technical problem of limited productivity caused by the fact that the transmitting lens and the receiving lens need to be respectively die sinking customization and assembled in the prior art.
In order to achieve the above object, according to an aspect of the present invention, there is provided a transceiver lens, which includes an integrally formed lens body base, the lens body base includes an optical fiber end lens, an optical attenuation section, and an optical device end lens on an optical path, the optical fiber end lens includes optical fiber coupling interfaces arranged in parallel in the left and right directions, the optical device end lens includes an emitting end surface and a receiving end surface arranged in parallel in the left and right directions, the emitting end surface, the optical attenuation section and the optical fiber coupling interface on the corresponding side form an emitting channel, and the receiving end surface, the optical attenuation section and the optical fiber coupling interface on the corresponding side form a receiving channel.
Preferably, the transmitting optical path and the receiving optical path of the transmitting and receiving lens transmit optical signals independently from left to right.
Preferably, the optical attenuation coefficient of the lens body base of the transmitting/receiving lens is between 0dBm and 10dBm, preferably between 2dBm and 6 dBm.
Preferably, the optical path length of the optical attenuation section of the transmitting and receiving lens is between 1mm and 10mm, preferably between 2mm and 3 mm.
Preferably, the radius of curvature of the transmitting end surface of the transmitting and receiving lens is 0.1 mm-100 mm.
Preferably, the radius of curvature of the receiving end surface of the lens for transmitting and receiving is 0.1mm to 100 mm.
According to another aspect of the invention, a single-channel active optical cable is provided, which comprises the transmitting-receiving lens, the laser, the optical detector and the optical fiber input-output port provided by the invention; the transmitting end face of the transmitting-receiving lens is aligned with the laser, and the receiving end face of the transmitting-receiving lens is aligned with the optical detector; the laser is positioned on a chip below the integrated lens on the optical detector.
Preferably, the channel interval between the emitting end face of the integrated unified lens and the photosensitive surface of the laser chip is the same as that between the receiving end face of the integrated unified lens and the photosensitive surface of the photodetector chip.
Preferably, the optical fiber input/output port of the single-channel active optical cable is assembled at the front end of the optical fiber end lens of the transceiver lens to provide an optical port.
Preferably, the optical port of the single-channel active optical cable is an LC type optical port, an MPO type optical port or any one of optical ports with PIN adapter; the PIN needle is a PEI plastic PIN needle or a metal PIN needle.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
the lens which is adopted in the existing module and is divided by the transmitting end and the receiving end is replaced by the lens which integrates receiving and transmitting, so that the die sinking cost and the material cost are reduced in the research and development link of the single-channel active optical module; the equipment utilization rate and the efficiency of operators are improved in the production link. Especially, in the research and development stage, double cost caused by respectively opening the die of the lens at the transmitting end and the lens at the receiving end is avoided, and two times of coupling work caused by respectively aligning the lens at the transmitting end and the lens at the receiving end with the coupling laser and the detector in the production stage is avoided.
In addition, the invention designs the length of the optical attenuation section by calculating the loss cost through the power budget of the whole optical scheme of the transmitting end and the receiving end, and averagely divides the attenuation quantity to the transmitting end and the receiving end, so that the lens of the transmitting end and the receiving end can be integrally subjected to dispersive attenuation, on one hand, the length of the optical attenuation section of the lens is shortened, the size of the lens is reduced, the miniaturization of a device is realized, and on the other hand, the technical problems of heat dissipation concentration and accelerated aging of the device caused by the concentrated attenuation of the existing scheme are.
Drawings
FIG. 1 is a schematic diagram of a single channel active optical cable configuration provided by the present invention;
FIG. 2 is a perspective view of a lens for receiving and transmitting light provided by the present invention;
FIG. 3 is a bottom view of a lens for receiving and transmitting light according to the present invention
FIG. 4 is a front view of a lens for receiving and transmitting light provided by the present invention;
FIG. 5 is a schematic diagram of an optical path of the lens for transmitting and receiving light according to the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
the optical fiber laser device comprises a lens 1, a laser 2, a detector 3, an optical device section lens 11, an optical fiber end lens 12, an optical fiber input/output port 13 and a lens base body 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 2 to 4, the lens 1 for transmitting and receiving provided by the present invention includes an integrally formed lens body 14, where the lens body 14 includes an optical fiber end lens 12, an optical attenuation section, and an optical device end lens 11 on an optical path, the optical fiber end lens 12 includes optical fiber coupling interfaces arranged in parallel in the left and right directions, the optical device end lens 11 includes an emitting end face and a receiving end face arranged in parallel in the left and right directions, the emitting end face, the optical attenuation section and the optical fiber coupling interface on the corresponding side constitute an emitting channel, and the receiving end face, the optical attenuation section and the optical fiber coupling interface on the corresponding side constitute a receiving channel, as shown in fig. 5; the transmitting channel and the receiving channel transmit optical signals independently from left to right.
The optical attenuation coefficient of the mirror body base 14 is between 0dBm and 10dBm, preferably between 2dBm and 6dBm, and the optical path length of the optical attenuation section is between 1mm and 10mm, preferably between 2mm and 3 mm.
One reason why the conventional lens with separate transmission and reception cannot be integrally molded is that the transmission channel and the reception channel have different lens light attenuations, so that the transmission and reception lens base 14 has different light attenuation coefficients, and cannot be integrally molded by opening the mold, and the mold must be opened separately to meet the requirements of respective optical parameters. The invention disperses the light attenuation at the receiving end and the transmitting end, so that the receiving end lens and the transmitting end lens are integrally synchronously and dispersedly attenuated, and the same base body 14 material is adopted, so that the integrated molding of the receiving-transmitting integrated lens 1 becomes possible.
In the preferred scheme, because the attenuation is respectively loaded at the receiving end and the transmitting end, compared with the single attenuation of the existing transmitting end, the attenuation length can be shortened by half or more, the size of the optical module is greatly reduced, the heat dissipation caused by light attenuation is dispersed, and the service life of components is prolonged.
The curvature radius of the emitting end face is 0.1 mm-100 mm.
The curvature radius of the receiving end face is 0.1 mm-100 mm.
Compared with the existing independent lens body, the receiving and transmitting integrated lens body increases the internal space of the lens body, can take different sizes of chips into consideration, such as a laser 2 and a detector 3 with larger sizes or a receiving and transmitting integrated chip, and has more flexibility.
The single-channel active optical cable provided by the invention, as shown in fig. 1, comprises a transmitting-receiving lens 1, a laser 2, an optical detector 3 and an optical fiber input/output port 13 provided by the invention; the transmitting end face of the transmitting-receiving lens 1 is aligned with the laser 2, and the receiving end face of the transmitting-receiving lens 1 is aligned with the optical detector 3; the laser 2 is positioned on a chip below the integrated unified lens on the optical detector 3, and preferably, the channel interval between the transmitting end surface of the integrated unified lens and the photosensitive surface of the chip of the laser 2 is the same as the channel interval between the receiving end surface of the chip of the optical detector 3. The optical fiber input/output port 13 is mounted at the front end of the optical fiber end lens 12 of the transceiver lens to provide an optical port. The optical port includes but is not limited to an LC type optical port, an MPO type optical port or any optical port with PIN fitting; the PIN needle is a PEI plastic PIN needle or a metal PIN needle.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The transmitting and receiving lens is characterized by comprising an integrally formed lens body base body, wherein the lens body base body is provided with an optical fiber end lens, an optical attenuation section and an optical device end lens on a light path, the optical fiber end lens is provided with optical fiber coupling interfaces which are arranged in parallel from left to right, the optical device end lens is provided with a transmitting end face and a receiving end face which are arranged in parallel from left to right, the transmitting end face, the optical attenuation section and the optical fiber coupling interface on the corresponding side form a transmitting channel, and the receiving end face, the optical attenuation section and the optical fiber coupling interface on the corresponding side form a receiving channel.
2. The lens of claim 1, wherein the transmitting optical path and the receiving optical path transmit optical signals independently from side to side.
3. The lens assembly according to claim 1, wherein the optical attenuation coefficient of the mirror body base is 0dBm to 10dBm, preferably 2dBm to 6 dBm.
4. The lens of claim 1, wherein the optical attenuation section has an optical path length of 1mm to 10mm, preferably 2mm to 3 mm.
5. The lens of claim 1, wherein the radius of curvature of the emitting end face is 0.1mm to 100 mm.
6. The lens of claim 1, wherein the radius of curvature of the receiving end surface is 0.1mm to 100 mm.
7. A single channel active optical cable comprising the transceiver lens, the laser, the photodetector, and the fiber input/output port of any one of claims 1 to 6; the transmitting end face of the transmitting-receiving lens is aligned with the laser, and the receiving end face of the transmitting-receiving lens is aligned with the optical detector; the laser is positioned on a chip below the integrated lens on the optical detector.
8. The single channel active optical cable of claim 7, wherein the integrated unified lens has an emitting facet that has the same channel spacing as the laser chip photosurface and a receiving facet that has the same channel spacing as the photodetector chip photosurface.
9. The single channel active optical cable of claim 7, wherein the fiber input/output port is mounted at a fiber end lens front end of the transceiver lens to provide an optical port.
10. The single channel active optical cable of claim 9, wherein the optical port is an LC type optical port, an MPO type optical port, or any optical port with PIN fitting; the PIN needle is a PEI plastic PIN needle or a metal PIN needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069367.4A CN111175914A (en) | 2020-01-21 | 2020-01-21 | Transmit-receive lens and single-channel active optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069367.4A CN111175914A (en) | 2020-01-21 | 2020-01-21 | Transmit-receive lens and single-channel active optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111175914A true CN111175914A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010069367.4A Pending CN111175914A (en) | 2020-01-21 | 2020-01-21 | Transmit-receive lens and single-channel active optical cable |
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| Country | Link |
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| CN (1) | CN111175914A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698864A (en) * | 2012-09-27 | 2014-04-02 | 鸿富锦精密工业（深圳）有限公司 | Optical fiber connector |
| CN103852831A (en) * | 2012-11-30 | 2014-06-11 | 鸿富锦精密工业（深圳）有限公司 | Lens unit and optical fiber coupling connector |
| CN203941319U (en) * | 2014-06-30 | 2014-11-12 | 武汉电信器件有限公司 | Optical module for SFP+ package module |
| CN108700720A (en) * | 2016-03-07 | 2018-10-23 | 恩普乐股份有限公司 | Optical receptacle and optical module |
| CN109839701A (en) * | 2017-11-29 | 2019-06-04 | 海思光电子有限公司 | Light emitting secondary module and optical transceiver module |
-
2020
- 2020-01-21 CN CN202010069367.4A patent/CN111175914A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698864A (en) * | 2012-09-27 | 2014-04-02 | 鸿富锦精密工业（深圳）有限公司 | Optical fiber connector |
| CN103852831A (en) * | 2012-11-30 | 2014-06-11 | 鸿富锦精密工业（深圳）有限公司 | Lens unit and optical fiber coupling connector |
| CN203941319U (en) * | 2014-06-30 | 2014-11-12 | 武汉电信器件有限公司 | Optical module for SFP+ package module |
| CN108700720A (en) * | 2016-03-07 | 2018-10-23 | 恩普乐股份有限公司 | Optical receptacle and optical module |
| CN109839701A (en) * | 2017-11-29 | 2019-06-04 | 海思光电子有限公司 | Light emitting secondary module and optical transceiver module |
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Application publication date: 20200519 |