CN113433629B - Multi-channel optical module with double fan-in fan-out based on MPO interface - Google Patents
Multi-channel optical module with double fan-in fan-out based on MPO interfaceDownload PDFInfo
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- CN113433629B CN113433629BCN202110731728.1ACN202110731728ACN113433629BCN 113433629 BCN113433629 BCN 113433629BCN 202110731728 ACN202110731728 ACN 202110731728ACN 113433629 BCN113433629 BCN 113433629B
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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
- 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
- G02B6/26—Optical coupling means
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- Optics & Photonics (AREA)
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- Engineering & Computer Science (AREA)
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- Optical Couplings Of Light Guides (AREA)
Abstract
Description
Technical Field
The invention belongs to the technical field of optical modules, and particularly relates to a double-fan-in fan-out multi-channel optical module based on an MPO interface.
Background
At present, the high-speed optical module mainly comprises SR4, PSM4, SR8 and SR16 which are transmitted in parallel, CWDM4, LR4, ER4, FR8, LR8, ER8 and the like which use a wavelength division multiplexing transmission scheme. The parallel transmission adopts a mode of parallel transmission of a plurality of optical fibers to realize high-speed transmission of a single module. For example, SR4 and PSM4 adopt 4 optical fibers for light collection, 4 optical fibers for light emission to realize 8-channel transceiving, SR8 needs to adopt 16 optical fibers for parallel transmission, which are 8-channel transceiving and 8-channel transceiving, and so on. The parallel scheme needs to use high-density MPO connectors to connect with the optical modules, the higher the number of channels is, the higher the required MPO connector density is, while the currently most commonly used 12-channel MPO interface can only meet the transceiving requirement of 8 channels, and with the increase of the module speed, the increase of the consumed optical fiber amount, the requirement on the interface density and the volume of the transmission optical cable of the parallel scheme become challenges.
In transmission scenarios larger than 500m, the amount of optical fiber is not suitable for long distance transmission, since parallel transmission consumes a multiple of the transmission distance. Therefore, the transmission is usually performed by using the wavelength division multiplexing method, and the wavelength division multiplexing method only needs to consume one receiving fiber and one transmitting fiber with two fibers no matter how many channels are, so that the total usage amount of the used fibers is less. However, the wavelength division multiplexing scheme needs to add a multiplexer, the cost of the existing multi-channel multiplexer is high, and a plurality of lasers with different wavelengths, such as LR8, need to be used, and 8 lasers with different wavelengths are needed to emit light. The maturity and the multiplexing degree of an industrial chain can be influenced to a certain extent, and the comprehensive cost of the wavelength division multiplexing scheme is higher.
With the development of communication technology, the number of optical module channels inevitably shows a trend of increasing. With parallel schemes, interface density can become a major bottleneck. However, with the wavelength division multiplexing scheme, the number of wavelengths of the laser needs to be increased, the wavelength interval needs to be reduced, and the problems of cost, crosstalk and the like also become the bottleneck of the high-channel-density optical module.
There is therefore a need for a more cost-effective high channel density optical module solution that saves optical fiber, routing space, and has ultra-high interface density, and is capable of using co-wavelength lasers.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a double fan-in fan-out multi-channel optical module based on an MPO interface, which is a high-channel-density optical module which can save optical fibers, save wiring space, has ultrahigh interface density and can use a same-wavelength laser with higher cost.
In order to achieve the purpose, the invention provides a double fan-in fan-out multi-channel optical module based on an MPO interface, which comprises an LD module with N lasers, a multi-core fiber fan-in device with N input ports and N/M output ports, N/M multi-core fibers coupled with the output ports of the multi-core fiber fan-in device and provided with M cores, and an N/M core and M core fiber MPO connector connected with the N/M multi-core fibers, wherein the LD module is sequentially arranged along the direction of an output optical axis; the multi-core optical fiber fan-out device comprises an N/M core M-core optical fiber MPO connector, N/M multi-core optical fibers with M cores and a multi-core optical fiber fan-out device with N/M input ports and N output ports, wherein the N/M core M-core optical fiber MPO connector, the N/M multi-core optical fibers with M cores and the multi-core optical fiber fan-out device are sequentially arranged along the direction of an input optical axis.
In some alternative embodiments, the input port of the multi-core fiber fan-in device can be connected with a conventional single-core fiber, and can also directly receive laser light emission through lens coupling.
In some optional embodiments, N first focusing lenses respectively corresponding to N channels of the LD module are disposed between the N-channel LD module and the input port of the multicore fiber fanning-in device, and are configured to converge and couple N divergent light sources emitted by the LD module to the N input ports of the multicore fiber fanning-in device, and enter M parallel channels of N/M core fibers from the N/M output ports of the multicore fiber fanning-in device.
In some optional embodiments, the output port of the multi-core fiber fan-in device is connected with the N/M-core fibers directly or through a fiber array.
In some optional embodiments, the input port of the multi-core optical fiber fanout device is connected to N/M optical fibers directly or through an optical fiber array, the detector module group composed of N detectors is connected to N output ports of the multi-core optical fiber fanout device, and the detector module group receives N sets of signals sent by the output ports of the multi-core optical fiber fanout device.
In some alternative embodiments, each output port of the multicore fiber fan-in device includes M outlets aligned with the cores of the M core fibers.
In some optional embodiments, the interval of the input ports of the multicore fiber fan-in device is the same as the arrangement interval of the laser modules.
In some alternative embodiments, each input port of the multi-core fiber fanout device includes M inlets aligned with the cores of the M-core fibers.
In some alternative embodiments, the output ports of the multi-core optical fiber fanout device are spaced at the same interval as the arrangement interval of the detector modules.
In some alternative embodiments, the output port of the multi-core optical fiber fanout device can be connected with a conventional single-core optical fiber, and can also directly transmit an optical signal to a detector.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
the invention adopts a novel optical module structure, can easily realize an ultrahigh channel density optical module, and can realize 96-channel transmission by adopting 12-core 8-core optical fiber MPO, for example. Compared with the original single-core parallel scheme, the 96-core MPO connector with ultrahigh density is needed for realizing 96-core transmission, so that the preparation difficulty is greatly reduced, the quantity of external wiring optical fibers is saved, and the density of an external channel is greatly improved. The problem of wiring density in applications such as data centers is solved. Compared with a wavelength division multiplexing scheme, the invention can adopt a laser with a single wavelength, is more beneficial to the scale mass production of an industrial chain and the stock of manufacturers, and changes the original MUX and DEMUX devices into the existing single optical fiber fan-in fan-out device which is provided with N input ports and N/M output ports, thereby having better cost. And the insertion loss of the fan-in fan-out device is less than that of the MUX and DEMUX devices, so that more allowance is reserved for the whole loss of the optical module.
Drawings
Fig. 1 is a schematic diagram of an optical module optical path structure based on an 8-core optical fiber 96-channel fan-in fan-out device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a 48-channel 8-core fiber fan-in device provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a 48-channel 8-core fiber fan-in device according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of an eight-core optical fiber according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and 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.
In the present examples, "first", "second", etc. are used for distinguishing different objects, and are not used for describing a specific order or sequence.
The invention provides a solution for an optical module of low-cost long-distance ultrahigh channel density parallel transmission, which improves the density by multiplying the number of channels, and each channel of the optical module can use a laser with the same wavelength. Only one 8-core fiber is needed to realize transmission of 8 channels, and only two 8-core fibers are needed to realize 16 channels. By analogy, the transmission of the 96-channel ultrahigh-density optical module can be easily realized by adopting a 12-core 8-core optical fiber MPO connector. Compared with the conventional single-core parallel high-density transmission scheme, the high-density MPO connector with high cost does not need to be used. Compared with the wavelength division multiplexing transmission scheme, lasers with different wavelengths are not needed, and the cost and the insertion loss of the fan-in fan-out device adopted in the invention are lower than the cost of wavelength division multiplexing and de-multiplexing devices. The invention saves the wiring space and has better overall cost.
Example 1:
as shown in fig. 1, 2, 3, and 4, a novel multi-channel optical module includes a 48-channel LD module 1, a 48-channel 8-core fiber fan-indevice 3, an 8-core fiber array 4, 8-core fibers 5 (core numbers 51 to 58) coupled tooutput ends 349 to 354 of the 48-channel 8-core fiber fan-in device, and a 12-core 8-corefiber MPO connector 6 connected to the 8-core fibers, which are sequentially arranged along an optical axis direction.
48 first focusinglenses 2 which correspond to 48 channels of the laser module are arranged between the 48-channel laser module and the input end of the 48-channel 8-core optical fiber fan-in device, and are numbered 21, 22 and 23 … 248, and the first focusing lenses are used for converging 48 paths of divergent light sources emitted by the LD module, coupling the converged light sources into 48input ports device 8 and adetector module 7 which are sequentially arranged along the optical axis direction. The 6 8-core optical fibers receive external optical signals, enter the input ends 849-854 of the fan-outdevice 8 through the 8-core optical fiber array, and directly reach thedetector array 7 from theoutput ends
The 48-channel 8-core optical fiber fan-in device is provided with 48 input ports and 6 groups of output ports, and one group of output ports comprises 8 output ports which are arranged in the same way as 8 fiber cores of 8-core optical fibers. The interval of the 48 input ports is the same as the arrangement interval of thelaser modules output ports input ports 849 to 854 is the same as the arrangement of 8 fiber cores of the 8-core optical fiber. The intervals of theoutput ports 81 to 848 are the same as the arrangement intervals of the detector modules 7 (numbered 71 to 748). Output ports 349-354 of the 48-channel 8-core optical fiber fan-in device and input ports 849-854 of the fan-out device are connected with 8-coreoptical fibers 5 through an 8-core optical fiber array 4 respectively. The insertion loss of the fan-indevice 3 and the fan-outdevice 8 is 2dB, preferably 1.5 dB.
Example 2:
the number of lasers in the laser array, the number of detectors in the detector array, the number of cores of the multi-core fiber, and the number of channels fanned into the fan-out device in example 2 are all the same as those in example 1, and the arrangement of the lasers and detectors is a 2 x 24 rectangular arrangement.
Example 3:
the number of lasers in the laser array, the number of detectors in the detector array, the number of cores of the multi-core fiber, and the number of channels fanned into the fanout device in example 3 are all 2 times the number of related in example 1.
It should be noted that, according to the implementation requirement, each step/component described in the present application can be divided into more steps/components, and two or more steps/components or partial operations of the steps/components can be combined into new steps/components to achieve the purpose of the present invention.
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. A multi-channel optical module with double fan-in fan-out based on MPO interface is characterized by comprising an LD module with 48 lasers, an 8-core optical fiber fan-in device with 48 input ports and 6 output ports, 6 multi-core optical fibers with 8 cores and a 12-core 8-core optical fiber MPO connector, wherein the LD module, the 8-core optical fiber fan-in device, the 6 multi-core optical fibers and the 6 multi-core optical fiber fan-in device are sequentially arranged along the direction of an output optical axis; the optical fiber fan-out device comprises a 12-core 8-core optical fiber MPO connector, 6 multi-core optical fibers with 8 cores and an 8-core optical fiber fan-out device with 6 input ports and 48 output ports, wherein the 12-core 8-core optical fiber MPO connector, the 6 multi-core optical fibers are connected with the MPO connector in sequence along the direction of an input optical axis.
2. The multi-channel optical module of claim 1, wherein the input port of the 8-core fiber fan-in device can be connected to a conventional single-core fiber and also can directly receive laser emission through lens coupling.
3. The multi-channel optical module of claim 2, wherein 48 first focusing lenses corresponding to 48 channels of the LD module are disposed between the 48-channel LD module and the input port of the 8-core fiber fanin device, and are used to converge and couple 48 divergent light sources emitted from the LD module into 48 input ports of the 8-core fiber fanin device, and enter 8 parallel channels of 6 8-core fibers from 6 output ports of the 8-core fiber fanin device.
4. The multi-channel optical module as claimed in any one of claims 1 to 3, wherein the output ports of the 8-core fiber fan-in device are connected with 6 8-core fibers directly or through a fiber array.
5. The multi-channel optical module as claimed in any one of claims 1 to 3, wherein the input port of the 8-core optical fiber fanout device is connected with 6 8-core optical fibers directly or through an optical fiber array, a detector module group composed of 48 detectors is connected with 48 output ports of the 8-core optical fiber fanout device, and the detector module group receives 48 groups of signals sent by the output ports of the 8-core optical fiber fanout device.
6. The multi-channel optical module of claim 4, wherein each output port of the 8-core fiber fan-in device comprises 8 outlets aligned with 8-core fiber cores.
7. The multi-channel optical module of claim 6, wherein the input ports of the 8-core fiber fan-in device are spaced at the same interval as the arrangement interval of the laser modules.
8. The multi-channel optical module of claim 5, wherein each input port of the 8-core fiber fanout device includes 8 inlets aligned with 8-core fiber cores.
9. The multi-channel optical module of claim 8, wherein the output ports of the 8-core optical fiber fanout device are spaced at the same interval as the detector modules are arranged.
10. The multi-channel optical module of claim 9, wherein the output port of the 8-core fiber fanout device can be connected to a conventional single-core fiber and can also directly transmit an optical signal to a detector.
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| CN202110731728.1ACN113433629B (en) | 2021-06-30 | 2021-06-30 | Multi-channel optical module with double fan-in fan-out based on MPO interface |
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| CN202110731728.1ACN113433629B (en) | 2021-06-30 | 2021-06-30 | Multi-channel optical module with double fan-in fan-out based on MPO interface |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089479A (en)* | 2021-12-10 | 2022-02-25 | 上海鸿辉光通科技股份有限公司 | A combined device of a planar optical waveguide and a multi-core optical fiber connector |
| CN116540361B (en)* | 2023-07-05 | 2023-09-12 | 中国电信股份有限公司 | Multi-core transmission system and multi-core transmission method |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011116133A1 (en)* | 2010-03-16 | 2011-09-22 | OFS Fitel LLC, a Delaware Limited Liability Company | Simplex connectors for multicore optical fiber cables |
| US9069143B2 (en)* | 2010-03-16 | 2015-06-30 | Ofs Fitel, Llc | Multifiber connectors for multicore optical fiber cables |
| JP5497544B2 (en)* | 2010-06-09 | 2014-05-21 | 住友電気工業株式会社 | Collective optical cable with connector |
| JP2014112164A (en)* | 2012-12-05 | 2014-06-19 | Hitachi Metals Ltd | Optical fiber connection structure |
| WO2014121034A1 (en)* | 2013-02-01 | 2014-08-07 | Commscope, Inc. Of North Carolina | Transitioning multi-core fiber to plural single core fibers |
| CN105911647B (en)* | 2016-05-18 | 2018-04-03 | 华中科技大学 | A kind of multicore fan-in fan-out modular coupling package system |
| JP6616509B2 (en)* | 2016-07-04 | 2019-12-04 | 日本電信電話株式会社 | Optical connector |
| CN107769856A (en)* | 2016-08-22 | 2018-03-06 | 中兴通讯股份有限公司 | A kind of optical signal sends system, reception system and method and communication system |
| JP2018041034A (en)* | 2016-09-09 | 2018-03-15 | 住友電気工業株式会社 | Optical connector and optical connection structure |
| CN106597612B (en)* | 2016-10-24 | 2019-02-12 | 华为机器有限公司 | Optical mode plate and communication equipment |
| JP6550424B2 (en)* | 2017-06-29 | 2019-07-24 | 株式会社フジクラ | Optical device manufacturing method |
| CN206741024U (en)* | 2017-09-22 | 2017-12-12 | 武汉驿路通科技股份有限公司 | A kind of fiber array of active light module |
| US20190173604A1 (en)* | 2017-12-04 | 2019-06-06 | Alibaba Group Holding Limited | High-speed optical transceiver based on cwdm and sdm |
| CN107919915B (en)* | 2017-12-20 | 2019-09-17 | 武汉邮电科学研究院 | Multichannel NRZ optical signal turns the optical fiber telecommunications system and method for the more level optical signals of single channel |
| CN209731254U (en)* | 2019-05-29 | 2019-12-03 | 广东瑞谷光网通信股份有限公司 | A kind of multichannel QSFP DD optical module |
| CN111965757A (en)* | 2020-05-10 | 2020-11-20 | 桂林电子科技大学 | Multi-core fiber fan-in fan-out beam splitter based on direct alignment coupling of collimated beams |
| CN111474641A (en)* | 2020-05-29 | 2020-07-31 | 中山市美速光电技术有限公司 | A multi-core optical fiber fan-out connector assembly |
| CN112255740B (en)* | 2020-11-20 | 2022-03-18 | 长飞光纤光缆股份有限公司 | Multi-core optical fiber connector and manufacturing method thereof |
- 2021
- 2021-06-30CNCN202110731728.1Apatent/CN113433629B/enactiveActive
Non-Patent Citations (1)
| Title |
|---|
| 《Multicore-Fiber_Receptacle_With_Compact_Fan-In_Fan-Out_Device_for_SDM_Transceiver_Applications》;Kota Shikama;《JOURNAL OF LIGHTWAVE TECHNOLOGY》;20181215;第36卷(第24期);第5815-5822页* |
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