CN204517996U - A kind of hybrid passive optical network device for EPON system - Google Patents
A kind of hybrid passive optical network device for EPON system Download PDFInfo
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- CN204517996U CN204517996U CN201520164042.9U CN201520164042U CN204517996U CN 204517996 U CN204517996 U CN 204517996U CN 201520164042 U CN201520164042 U CN 201520164042U CN 204517996 U CN204517996 U CN 204517996U
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Abstract
The utility model is applicable to optical communication field, provide a kind of hybrid passive optical network device for EPON system, comprise: a WDM device 1, the 2nd WDM device 2, the 3rd WDM device 3 and the 4th WDM device 4, and the first optical interface COM 5, second optical interface 10G EPON 6 and the 3rd optical interface 1G EPON 7; Second optical interface 10G EPON the 6, the 2nd WDM device 2, a WDM device 1 are connected successively with the first optical interface COM 5; One WDM device 1 is by connecting the 3rd optical interface 1G EPON 7 after the 3rd WDM device 3; Connected by the 4th WDM device 4 between 2nd WDM device 2 and the 3rd WDM device 3.Can by the partial filtration of up for 1G and 10GEPON wave band overlap by specific WDM device and link connected mode, both realizations adopt separately independently band transmission uplink and downlink signals respectively, take full advantage of the bandwidth resources of system, realize up link 1GEPON, the 10GEPON leap from time division multiplexing to wavelength division multiplexing, reach the multiple services carrying such as supported data, voice, video and transmit.
Description
Technical field
The utility model belongs to optical communication technology field, particularly relates to a kind of hybrid passive optical network device for EPON system.
Background technology
Along with the development of society, the progress of science and technology, bring the popularity of broad band value-added service, as 3D online game, long-distance education, video conference, video request program, IPTV and triple play (Triple Play) etc., make the demand of user to bandwidth more and more higher, existing broadband access method, as ADSL and LAN access, the problems such as transmission range is short, access bandwidth is limited owing to existing, fail safe is not high, service quality does not have a good guarantee, more and more can not meet the demand of user.Optical fiber because its transmission rate is high, capacity is large, repeater span is long, the feature such as anti-interference, good confidentiality is by the best medium as intelligent acess.While the point-to-point FTTB application of business user is day by day universal, PON have also been obtained in the different occasion such as FTTC, FTTO, FTTH and applies widely.
EPON (PON, Passive Optical Network) use optical fiber as transmission medium, its optical distribution (OpticalDistribution Network, ODN) containing any electronic device and power supply, is not all made up of passive devices such as optical splitters.The impact of electromagnetic interference and thunderbolt can be avoided and reduce the failure rate of circuit and equipment, improving system reliability, save maintenance cost, because of but the preferred plan of solution network insertion bottleneck.Especially be the broadband access technology of representative with EPON, owing to possessing very unique value location, save cable resource, bandwidth resources are shared, save machine room investment, fast, the comprehensive networking low cost and other advantages of high, the networking speed of device security, be more and more subject to the favor of telecommunications company, Full-Service Operators.Can infer, along with the develop rapidly of the correlation technique such as the communication technology, optoelectronic integrated technology, EPON system will provide more economically to user, reliably broadband and multiple services Integrated access.
Along with EPON (Ethernet Passive Optical Network, Ethernet passive optical network) popularization of technology and evolution, EPON also experienced by the development from 1G to 10G, simultaneously relevant 1G and 10G standard also corresponding appearance, IEEE 802.3ah and IEEE802.3av respectively defines 1G and 10G EPON standard, regulation 1G and 10G downstream band are respectively: 1480-1500nm and 1575-1580nm, up wave band is respectively: 1260-1360nm and 1260-1280nm, in actual applications, the up wave band of 10G is applied comparatively extensive with narrow wave band 1290-1310.
Meanwhile, WDM (Wavelength Division Multiplexing) technology can realize multi-wavelength and transmit simultaneously on an optical fiber, network communication capacity is increased considerably, its general principle is at transmitting terminal by the optical multiplexed signal of different wave length altogether (multiplexing), send in same optical fiber and transmit, at receiving terminal again by the wavelength of optical signal of compound separately (demultiplexing), receiving demodulation, recovers original signal and sends into object terminal.Coarse wave division multiplexing technology cost is low, and power consumption is little, and volume is little, and being applicable to the transition of network technology, is a kind of transmission means of high-performance low price, is the preferred option solving Access Network bottleneck problem.
Take into account EPON and CWDM advantage separately, some Internet service providers wish to provide two kinds of optical-fiber networks to client simultaneously, certainly will increase light device and the fiber resource of twice like this, cause optical-fiber network module volume to increase, cost up.
Utility model content
The object of the utility model embodiment is to provide a kind of hybrid passive optical network device for EPON system, large to solve prior art hybrid passive optical network device volume, the problem that cost is high.
The utility model embodiment realizes like this, a kind of hybrid passive optical network device for EPON system, described device comprises: a WDM device 1, the 2nd WDM device 2, the 3rd WDM device 3 and the 4th WDM device 4, and the first optical interface COM 5, second optical interface 10GEPON 6 and the 3rd optical interface 1GEPON 7;
Described second optical interface 10GEPON 6, described 2nd WDM device 2, a described WDM device 1 are connected successively with described first optical interface COM 5;
A described WDM device 1 is by connecting described 3rd optical interface 1GEPON 7 after described 3rd WDM device 3;
Connected by described 4th WDM device 4 between described 2nd WDM device 2 and described 3rd WDM device 3.
In first preferred embodiment of a kind of hybrid passive optical network device for EPON system that the utility model provides: described first optical interface COM 5 connects a port of a described WDM device 1;
The b port of a described WDM device 1 connects a port of described 2nd WDM device 2, and c port connects a port of described 3rd WDM device 3;
The b port of described 2nd WDM device 2 connects described second optical interface 10GEPON 6;
The b port of described 3rd WDM device 3 connects a port of the described 4th WDM device 4 of the 3rd optical interface 1GEPON 7, c port connection;
The b port of described 4th WDM device 4 connects the c port of described 2nd WDM device 2;
Export from b port after the optical signal filtering of WDM device a port input; Through WDM device a port input light signal after filtering after export from c port reflects.
In second preferred embodiment of a kind of hybrid passive optical network device for EPON system that the utility model provides: the filter range of a described WDM device 1 and described 2nd WDM device 2 makes wave-length coverage be that the light of 1260-1280nm exports from b port;
The filter range of described 3rd WDM device 3 makes wave-length coverage be that the light of 1270-1500nm exports from b port;
The filter range of described 4th WDM device 4 makes wave-length coverage be that the light of 1575-1580nm exports from b port.
In 3rd preferred embodiment of a kind of hybrid passive optical network device for EPON system that the utility model provides: described system also comprises: the first optical splitter 8, CWDM system 9 and the second optical splitter (10);
Described second optical splitter (10) one end connects described first optical interface COM (5), from the light of described first optical interface COM (5) first after described second optical splitter (10) carries out power division, described first optical splitter (8) is given on one tunnel, and another road is as monitoring client.
First optical splitter (8) in described system, one end is connected with the large splitting ratio end of the second optical splitter (10), and the homonymy other end is connected with the common port of CWDM system (9).Namely from the light of the first optical interface COM (5) successively via after the second optical splitter (10), the first optical splitter (8), be divided into two-way by power-division ratios, as two new optical interfaces.
The beneficial effect of a kind of hybrid passive optical network device for EPON system that the utility model embodiment provides comprises:
1, three kinds of systems link together by this device WDM device and optical splitter closely, and can realize in a modular cartridge, and this light path connected mode substantially reduces Large Copacity, large volume because causing for three kinds of optical-fiber networks simultaneously.
2, because device consumption is few, link connected mode is simple, has therefore saved a large amount of fiber resources and unnecessary optical device, while cost-saving, has also reduced the O&M cost of system.
3, have also been obtained very large improvement at aspect of performance, achieve the time division multiplexing of up link (from user side to optical link terminal) by routine to the leap of wavelength division multiplexing, enable 1G and 10G up-downgoing individual transmission, without the need to considering the time delay that time division multiplexing is brought, signal disturbing is little, and fail safe is higher.
4, the device price used is low, is convenient to buying, is easy to batch production.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of hybrid passive optical network device for EPON system that the utility model embodiment provides;
Fig. 2 is the structural representation of a kind of hybrid passive optical network device for EPON system that the utility model provides;
Fig. 3 is the structural representation of the embodiment of a kind of hybrid passive optical network device for EPON system that the utility model provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In order to technical scheme described in the utility model is described, be described below by specific embodiment.
Be illustrated in figure 1 1GEPON, 10GEPON optical-fiber network uplink and downlink works band of light spectrogram.As can be seen from Figure 1,1G up-downgoing wave band is respectively: 1260-1360nm and 1480-1500nm, 10G up-downgoing wave band is respectively: 1260-1280nm and 1575-1580nm.At up direction, 10G wave band is comprised within the scope of 1G, but the utility model is by adopting special wave band WDM device, up for 1G wave band is narrowed to 1285-1335nm, realizes the up individual transmission of 1G and 10G.
Be illustrated in figure 2 the structural representation of a kind of hybrid passive optical network device for EPON system that the utility model provides, as shown in Figure 2, this hybrid passive optical network device comprises:
One WDM device 1, the 2nd WDM device 2, the 3rd WDM device 3 and the 4th WDM device 4, and the first optical interface COM 5, second optical interface 10G EPON 6 and the 3rd optical interface 1G EPON 7.
Second optical interface 10G EPON the 6, the 2nd WDM device 2, a WDM device 1 are connected successively with the first optical interface COM 5; One WDM device 1 is by connecting the 3rd optical interface 1G EPON 7 after the 3rd WDM device 3; Connected by the 4th WDM device 4 between 2nd WDM device 2 and the 3rd WDM device 3.
Concrete, the first optical interface COM 5 connects a port of a WDM device 1.
The b port of the one WDM device 1 connects a port of the 2nd WDM device 2, and c port connects a port of the 3rd WDM device 3.
The b port of the 2nd WDM device 2 connects the second optical interface 10G EPON 6.
B port one G EPON 7, the c port of the 3rd WDM device 3 connects a port of the 4th WDM device 4.
The b port of the 4th WDM device 4 connects the c port of the 2nd WDM device 2.
Export from b port after the optical signal filtering of WDM device a port input; Through WDM device a port input light signal after filtering after export from c port reflects.
Further, the filter range of a WDM device 1 and the 2nd WDM device 2 is that the light of the up wave band 1260-1280nm of 10G is exported from b port.
The filter range of the 3rd WDM device 3 is that the light of 1G uplink and downlink signals ripple 1285-1335nm and 1480-1500nm is exported from b port.
The filter range of the 4th WDM device 4 is that the light of 10G downstream signal wave band 1575-1580nm is exported from b port.
In principle, up direction: the light from the first optical interface COM 5 carries out filtering and reflection via a WDM device 1, filter the up wave band of 10G to the 2nd WDM device 2, then carry out filtering by the 2nd WDM device 2, finally obtain the up wave band of 10G and be coupled to 10GOLT port.
All the other band of light outside the c port reflects output removing 10G upward signal wave band of the one WDM device 1 are to the 3rd WDM device 3, filtering and reflection is carried out again by the 3rd WDM device 3, filter 1G uplink and downlink signals wave band, exported by the b port of the 3rd WDM device 3 and be finally coupled to 1G EPON OLT port.Its remaining light reflects all the other band of light except 1G up-downgoing wave band to the 4th WDM device 4 through the 3rd WDM device 3,10G downstream signal wave band is filtered again via the 4th WDM device 4, then the c port reflects via the 2nd WDM device 2 outputs to 10G EPON OLT port, as the downstream band of 10G.
Down direction: according to the principle of reversibility of light, 10G downstream signal light, after the 2nd WDM device 2 reflects, by the 4th WDM device 4, and is reflected by the 3rd WDM device 3, a WDM device 1, arrives the first optical interface COM 5.1G downstream signal light, after the 3rd WDM device 3, is also reflected by a WDM device 1, finally arrives the first optical interface COM 5.
A kind of hybrid passive optical network device for EPON system that the utility model embodiment provides, take full advantage of the up-downgoing wave band of 1G and 10G, achieve its associating and shunt, and utilize optical splitter effectively by both it with CWDM interconnection together, take full advantage of existing bandwidth resources, for EPON provider provides a kind of simple and practical, cost-effective link jockey that can be used for hybrid passive optical network.
Embodiment one
Be illustrated in figure 3 the structural representation of the embodiment of the hybrid passive optical network device for EPON system that the utility model provides, as shown in Figure 3, in the embodiment of the hybrid passive optical network device for EPON system that the utility model provides, also comprise: the first optical splitter 8, CWDM system 9 and the second optical splitter 10.
First optical splitter (8), one end is connected with the large splitting ratio end of the second optical splitter (10), and the homonymy other end is connected with the common port of CWDM system (9).Namely from the light of the first optical interface COM (5) successively via after the second optical splitter (10), the first optical splitter (8), be divided into two-way by power-division ratios, as two new optical interfaces.The first optical splitter (8) splitting ratio provided in figure is 50% and 50%, and 50% gives the first optical splitter 1,50% gives CWDM system 9, CWDM system 9 containing 8 or more passages.
Second optical splitter (10) one end connects the first optical interface COM (5), from the light of described first optical interface COM (5) first after described second optical splitter (10) carries out power division, described first optical splitter (8) is given on one tunnel, another road as monitoring client, to feed back in time.What provide in Fig. 3 is that 99% large splitting ratio end is connected with the first optical splitter 8,1% working condition being used for monitoring other links.
What provide in Fig. 3 is CWDM system 9 containing 8 or more passages.
The EPON link connected mode of a kind of 1G EPON, 10GEPON and CWDM mixed type that the utility model embodiment provides, together with these three kinds of PON system can closely be joined to Splitters by this system WDM device, and realize encapsulating in a modular cartridge, both conserve space in turn saved a large amount of fiber resources and unnecessary components and parts.This system can by the partial filtration of up for 1G and 10GEPON wave band overlap by specific WDM device and link connected mode, both realizations adopt separately independently band transmission uplink and downlink signals respectively, take full advantage of the bandwidth resources of system, realize up link 1GEPON, the 10GEPON leap from time division multiplexing to wavelength division multiplexing, reach the multiple services carrying such as supported data, voice, video and transmit.In addition, the device price that this utility model is used is low, is convenient to buying, is easy to batch production, brings material benefit therefore will to each macroreticular operator.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. for a hybrid passive optical network device for EPON system, it is characterized in that, described device comprises:
One WDM device (1), the 2nd WDM device (2), the 3rd WDM device (3) and the 4th WDM device (4), and the first optical interface COM (5), the second optical interface 10G EPON (6) and the 3rd optical interface 1G EPON (7);
Described second optical interface 10G EPON (6), described 2nd WDM device (2), a described WDM device (1) are connected successively with described first optical interface COM (5);
A described WDM device (1) connects described 3rd optical interface 1G EPON (7) afterwards by described 3rd WDM device (3);
Connected by described 4th WDM device (4) between described 2nd WDM device (2) and described 3rd WDM device (3).
2. device as claimed in claim 1, it is characterized in that, described first optical interface COM (5) connects a port of a described WDM device (1);
The b port of a described WDM device (1) connects a port of described 2nd WDM device (2), and c port connects a port of described 3rd WDM device (3);
The b port of described 2nd WDM device (2) connects described second optical interface 10G EPON (6);
The b port of described 3rd WDM device (3) connects described 3rd optical interface 1G EPON (7), and c port connects a port of described 4th WDM device (4);
The b port of described 4th WDM device (4) connects the c port of described 2nd WDM device (2);
Export from b port after the optical signal filtering of WDM device a port input; Through WDM device a port input light signal after filtering after export from c port reflects.
3. device as claimed in claim 1, is characterized in that, the filter range of a described WDM device (1) and described 2nd WDM device (2) makes wave-length coverage be that the light of 1260-1280nm exports from b port;
The filter range of described 3rd WDM device (3) makes wave-length coverage be that the light of 1270-1500nm exports from b port;
The filter range of described 4th WDM device (4) makes wave-length coverage be that the light of 1575-1580nm exports from b port.
4. device as claimed in claim 1, it is characterized in that, described system also comprises: the first optical splitter (8), CWDM system (9) and the second optical splitter (10);
Described second optical splitter (10) one end connects described first optical interface COM (5), from the light of described first optical interface COM (5) first after described second optical splitter (10) carries out power division, described first optical splitter (8) is given on one tunnel, and another road is as monitoring client.
5. device as claimed in claim 4, it is characterized in that, first optical splitter (8) in described system, one end is connected with the large splitting ratio end of the second optical splitter (10), and the homonymy other end is connected with the common port of CWDM system (9); From the light of the first optical interface COM (5) successively via after the second optical splitter (10), the first optical splitter (8), be divided into two-way by power-division ratios, as two new optical interfaces.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113905294A (en) * | 2021-10-21 | 2022-01-07 | 武汉恩达通科技有限公司 | WDM-based hybrid passive optical network system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113905294A (en) * | 2021-10-21 | 2022-01-07 | 武汉恩达通科技有限公司 | WDM-based hybrid passive optical network system |
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Address after: 430223 Great Wall Innovation Science and Technology Park, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Jiepu Technology (Wuhan) Co.,Ltd. Address before: 430079 Changcheng Innovation Science and Technology Park, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee before: Wuhan Aoxin Technology Co.,Ltd. |
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