CN204761439U - Active fiber optic cable communications of duplexing structure of two fibres framework - Google Patents
Active fiber optic cable communications of duplexing structure of two fibres framework Download PDFInfo
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- CN204761439U CN204761439U CN201520403851.0U CN201520403851U CN204761439U CN 204761439 U CN204761439 U CN 204761439U CN 201520403851 U CN201520403851 U CN 201520403851U CN 204761439 U CN204761439 U CN 204761439U
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Abstract
The utility model provides a transmission link constitutes, and this link includes: that active fiber optic cable communications of duplexing structure of two fibres framework, by two the same and relative settings of structure the drive circuit, VCSEL, transmission fiber, PD and the receiving circuit that connect gradually, wherein: two transmission link's transmission fiber realizes through two core optical fiber cable that two core optical fiber cable's both ends have signal reception part of a signalling subtotal respectively. The utility model discloses can show the optic fibre quantity that reduces the parallel connection uniformity in order to improve technology, directly reduce the quantity consumed of device simultaneously, reduce cost more effectively in the yield of directly improving production.
Description
Technical field
The utility model relates to a kind of transmission medium of optical communication field, specifically two fine duplex structure, there is 100G two-forty, QSFP+ interface (QSFP+, QuadSmallForm ?factorPluggablePlus) active optical cable communication construction.
Background technology
Active optical cable (ActiveOpticalCable:AOC) is the most advanced photovoltaic interconnects technology that a kind of newly-developed gets up.AOC high speed, low-power consumption, long distance, high density, without there being the unrivaled advantage of traditional electrical interconnection technique in electromagnetic interference, short time delay etc.Nearly all electrical interconnection interface can use photovoltaic interconnects instead, thus can realize the long distance join of low-power consumption high speed of data communication in the mode of AOC.This respect, the AOC of To enterprises level application has the QSFP+ etc. of SAS, 56G of QSFP, 48G of Fibrechannel, 40G of SFP, 16G of 10G, towards the HDMI etc. having Thunderbolt, 20G of PCIe, 10G of USB, 8G of 5G/10G of consumer level application.According to the prediction of CIR company of the U.S., under cloud computing, large these application demands of data promote, the AOC being applied to data center is sold to 2017 and will reaches 2,200,000,000 dollars, about 1,400,000,000 dollars, other field.Prior meaning is, data center and supercomputer after solution high data rate interconnects this key conduit problem, for the magnanimity application of " the Internet+" and must can calculate the band width in physical support providing the bottom.
At present, in large-scale data center and supercomputer, the machine of more than 40G adopts AOC in a large number, and No. 2, the Milky Way (the fastest supercomputer in the world) have employed the AOC of more than 40,000 56G, and following the 100G even equipment of higher rate must use AOC especially.On the other hand, 100GAOC mainly adopts the multi-source agreement (multi ?sourceagreement) of QSFP+ at present.
In existing technical scheme, the 40GAOC of Jiangsu rising sun wound just adopts QSFP+MSA (the Patent document number CN102169215A of its patented technology, open (bulletin) day, 2011.08.31), Molex then reports the 100GQSFP+AOC adopting silicon light technology to realize.The companies such as TEConnectivity and Finisar then adopt the most conventional vertical wall emitting laser (VCSEL) scheme to realize 100GQSFP+AOC.
In existing other technologies scheme, the general signal of four road 25G that adopts carries out directly modulation respectively to four VCSEL, carries out four road optical fiber parallel transmissions on this basis, receives at receiving terminal with four photodetectors (PD).Therefore, realize duplexing process, add up to 8 optical fiber in optical cable and carry out parallel join.The consistency of Fiber connection process is problem extremely serious in technique, and the coupling of an optical fiber goes wrong and will whole AOC be caused to become defective products.
Through finding the retrieval of prior art, Chinese patent literature CN202995094U, open (bulletin) day, 2013.06.12, disclose a kind of parallel transmission optical device being easy to encapsulate, comprise multichannel transmitting chip, multipath reception chip, PCB substrate, transmitting drive IC, receive and amplify IC, multiple array lens and multiple multicore array fibre.Multichannel transmitting chip is electrically connected with transmitting drive IC, and luminous aperture and an array lens alignment of multichannel transmitting chip are arranged; Multipath reception chip amplifies IC with reception and is electrically connected, and the reception photosurface of multipath reception chip is aimed at another array lens and arranged; Multicore array fibre connects multiple array fibre connector, and the plurality of array fibre connector is aimed at multiple array lens respectively and arranged.But prior art is the duplex structure of 8 fibres, namely 8 optical fiber realizes the bidirectional data communication on 4 tunnels, and cannot realize the bidirectional data communication in two optical fiber.And this technology, in the single-ended data communication being employing 4 VCSEL and 4 PD and realizing 4 road signals, cannot realize 1 VCSEL and communicate with the 4 road signal datas that 1 PD obtains total speed identical.
Utility model content
The utility model is for prior art above shortcomings, a kind of two fine duplex structure active optical cable communication construction is proposed, significantly can reduce the number of fibers of parallel join to improve the consistency of technique, directly reduce the quantity consumed of device simultaneously, more can effectively reduce costs while directly improving production yield.
The utility model is achieved through the following technical solutions:
The utility model relates to a kind of two fine duplex structure active optical cable communication construction, by two structures, the identical and transmission link be oppositely arranged forms, this link comprises: the drive circuit connected successively, vertical cavity surface emitting laser (VCSEL), Transmission Fibers, photodetector (PD) and receiving circuit, wherein: the Transmission Fibers of two transmission links is realized by twin-core fiber optical cable, the two ends of twin-core fiber optical cable have a signal emission part and a signal receive section respectively.
Described drive circuit comprises: signal merge cells and amplification modulating unit, wherein: signal merge cells is that input receives four road 25G parallel signals, output with amplification modulating unit be connected and export a road 50GPAM4 signal, by amplification modulating unit to this 50GPAM4 signal amplification and VCSEL is modulated.
Described receiving circuit comprises: signal decomposition unit and signal bias unit, wherein: signal bias unit is biased to the signal of telecommunication to the 50GPAM4 light signal that PD exports and exports signal decomposition unit to after amplifying across resistance, is that the accurate 25G of four road signs outputs signal by signal decomposition unit by 50GPAM4 signal of telecommunication decomposition multiplex.
The bandwidth of described VCSEL and PD is more than 50GHz, and operation wavelength is 850nm, 1310nm or 1550nm wave band.
Described VCSEL and PD places side by side and spacing is 125 microns.
Described twin-core fiber optical cable is assembled side by side by two optical fiber and is obtained, and the diameter of this optical fiber is 125 microns, two fibre cores be spaced apart 125 microns, this twin-core fiber optical cable adopt monomode fiber or multimode fiber composition.
Technique effect
Compared with prior art, the utility model can realize obtaining 4 circuit-switched data communications in the optical fiber be bi-directionally connected at two, thus realizes the function of two fine duplex; Traditional 8 optical fiber structures are reduced to 2 optical fiber structures but do not change the speed of data communication, the usage quantity of tradition 4 VCSEL and 4 PD is reduced to 1 VCSEL and 1 PD simultaneously, thus significantly reduce number of devices and corresponding power consumption, reduce cost.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model twin fiber cable structural representation, wherein 125 microns, fibre core interval.
Fig. 3 is the utility model VCSEL and PD schematic diagram;
The drive circuit functionality schematic diagram of Fig. 4 involved by the utility model;
The receiving circuit functional schematic of Fig. 5 involved by the utility model;
The AOC module section 26S Proteasome Structure and Function schematic diagram of Fig. 6 involved by the utility model;
The overall system structure of Fig. 7 AOC involved by the utility model and functional schematic;
The 26S Proteasome Structure and Function schematic diagram of Fig. 8 100GQSFP+AOC implementation column involved by the utility model.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented under premised on technical solutions of the utility model; give detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
Embodiment 1
As depicted in figs. 1 and 2, the corresponding speed required by Infiniband of the present embodiment, i.e. single link speed 500MB/ second, four link speed 2GB/ seconds.
The present embodiment comprises: two root multimode fibers
Described multimode fiber, core diameter is 62.5 microns, and cladding diameter is 125 microns, and two optical fiber are close to side by side, and fibre core is spaced apart 125 microns;
As shown in Figure 3, for described bandwidth is the VCSEL of 50GHz, what assemble side by side with it be a bandwidth is the PD of 50GHz, and bandwidth described in this part is three dB bandwidth.The center distance of VCSEL and PD is 125 microns, and VCSEL is of a size of 125*125 micron, and PD is of a size of 125*125 micron;
As shown in Figure 4, be described drive circuit, the NRZ signal of 4 road 25.78Gbps is changed into the PAM4 signal of 1 road 51.56Gbaud, total speed reaches 103.12Gbps, thus obtains the 100GEDR bandwidth required for Infiniband.
This drive circuit comprises: AD conversion unit, parallel serial conversion unit, binary system are to 4 scale coding unit and D/A conversion units, thus overdrive circuit realizes the directly modulation to VCSEL.
As shown in Figure 5, be described receiving circuit, the 51.56GbaudPAM4 signal of the 1 total speed 103.12Gbps in tunnel changed into the NRZ signal of 4 road 25.78Gbps, thus export as four tunnels of QSFP+.
This receiving circuit comprises: AD conversion unit, 4 systems are to binary coding unit and serial to parallel conversion unit.
As shown in Figure 6, the output that the present embodiment plans drive circuit is connected to VCSEL for realizing directly modulation, the input of receiving circuit is connected to PD and is used for receiving the light signal that PD obtains, 4 road inputs of drive circuit and 4 road outputs of receiving circuit are connected to QSFP+ external interface.The chip that VCSEL and PD assembles side by side will aim at coupling with twin-core fiber, 125 microns, twin-core fiber fibre core interval, VCSEL and PD Center Gap 125 microns, realize coupling package by accurately aiming at.
As shown in Figure 7, the present embodiment, by getting up to obtain 100GQSFP+AOC by two module assembleds, realizes the EDR data communication of 103.12Gbps.Adopt VCSEL and PD of 850nm, and the OM2 multimode fiber of 62.5/125, obtain the AOC example structure of Fig. 8.
First the present embodiment will obtain the PAM4 signal of telecommunication of a road 50Gbaud, and this signal of telecommunication by obtaining the light signal of 50Gbaud to VCSEL directly modulation, thus can realize transmission and interconnection in a fiber.
Claims (9)
1. a two fine duplex structure active optical cable communication construction, it is characterized in that, by two structures, the identical and transmission link be oppositely arranged forms, this link comprises: the drive circuit connected successively, VCSEL, Transmission Fibers, PD and receiving circuit, wherein: the Transmission Fibers of two transmission links is realized by twin-core fiber optical cable, the two ends of twin-core fiber optical cable have a signal emission part and a signal receive section respectively.
2. two fine duplex structure active optical cable communication construction according to claim 1, it is characterized in that, described drive circuit comprises: signal merge cells and amplification modulating unit, wherein: signal merge cells is that input receives four road 25G parallel signals, output with amplification modulating unit be connected and export a road 50GPAM4 signal, by amplification modulating unit to this 50GPAM4 signal amplification and VCSEL is modulated.
3. two fine duplex structure active optical cable communication construction according to claim 1, it is characterized in that, described receiving circuit comprises: signal decomposition unit and signal bias unit, wherein: signal bias unit is biased to the signal of telecommunication to the 50GPAM4 light signal that PD exports and exports signal decomposition unit to after amplifying across resistance, is that the accurate 25G of four road signs outputs signal by signal decomposition unit by 50GPAM4 signal of telecommunication decomposition multiplex.
4. two fine duplex structure active optical cable communication construction according to claim 1, it is characterized in that, the bandwidth of described VCSEL and PD is 50GHz, and carrier wavelength is 850nm, 1310nm or 1550nm wave band.
5. two fine duplex structure active optical cable communication construction according to claim 1, it is characterized in that, described VCSEL and PD places side by side and spacing is 125 microns.
6. two fine duplex structure active optical cable communication construction according to claim 1, it is characterized in that, described twin-core fiber optical cable is assembled side by side by two optical fiber and is obtained, the diameter of this optical fiber is 125 microns, two fibre cores be spaced apart 125 microns, this twin-core fiber optical cable adopt monomode fiber or multimode fiber composition.
7. two fine duplex structure active optical cable communication construction according to claim 1, it is characterized in that, described drive circuit comprises: AD conversion unit, parallel serial conversion unit, binary system are to 4 scale coding unit and D/A conversion units.
8. two fine duplex structure active optical cable communication construction according to claim 1, it is characterized in that, described receiving circuit comprises: AD conversion unit, 4 systems are to binary coding unit and serial to parallel conversion unit.
9. two fine duplex structure active optical cable communication construction according to claim 1, is characterized in that, when carrier wavelength is 850nm, described Transmission Fibers adopts the OM2 multimode fiber of 62.5/125.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520403851.0U CN204761439U (en) | 2015-06-12 | 2015-06-12 | Active fiber optic cable communications of duplexing structure of two fibres framework |
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| CN201520403851.0U CN204761439U (en) | 2015-06-12 | 2015-06-12 | Active fiber optic cable communications of duplexing structure of two fibres framework |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883223A (en) * | 2015-06-12 | 2015-09-02 | 上海南明光纤技术有限公司 | Double-fiber duplexing structure active optical cable communication architecture |
| WO2022001518A1 (en) * | 2020-06-30 | 2022-01-06 | 华为技术有限公司 | Multi-core optical fiber interleaver, optical fiber amplifier, transmission system and transmission method |
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2015
- 2015-06-12 CN CN201520403851.0U patent/CN204761439U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883223A (en) * | 2015-06-12 | 2015-09-02 | 上海南明光纤技术有限公司 | Double-fiber duplexing structure active optical cable communication architecture |
| WO2022001518A1 (en) * | 2020-06-30 | 2022-01-06 | 华为技术有限公司 | Multi-core optical fiber interleaver, optical fiber amplifier, transmission system and transmission method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191114 Address after: 200240 Dongchuan Road, Shanghai, No. 800, No. Patentee after: Ma Lin Address before: 4, No. 555, Lane 3111, 201401 West Ring Road, Shanghai, Fengxian District, -590 Patentee before: SHANGHAI NET MILES TECHNOLOGY CO.,LTD. Effective date of registration: 20191114 Address after: 200240 Dongchuan Road, Shanghai, No. 800, No. Co-patentee after: Du Jiangbing Patentee after: Ma Lin Co-patentee after: Zhang Wenjia Co-patentee after: Bai Linbin Address before: 200240 Dongchuan Road, Shanghai, No. 800, No. Patentee before: Ma Lin |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200304 Address after: 200240 Shanghai city Minhang District Jianchuan Road No. 951 Building 5 layer 1 Patentee after: Shanghai Guangzhi Technology Co.,Ltd. Address before: 200240 Dongchuan Road, Shanghai, No. 800, No. Co-patentee before: Du Jiangbing Patentee before: Ma Lin Co-patentee before: Zhang Wenjia Co-patentee before: Bai Linbin |