CN102325280B - Regenerating optical network of gigabit Ethernet passive optical network and gigabit Ethernet optical network system - Google Patents
Regenerating optical network of gigabit Ethernet passive optical network and gigabit Ethernet optical network system Download PDFInfo
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Abstract
The invention discloses a regenerating optical network of a gigabit Ethernet passive optical network and a gigabit Ethernet optical network system. The regenerating optical network comprises a wavelength division multiplexer, an optical-electrical conversion unit and an electrical-optical conversion unit. The wavelength division multiplexer is used for receiving optical signals, demultiplexing the optical signals and transmitting the signals to the optical-electrical conversion unit, the optical-electrical conversion unit is used for optical-electrical signal conversion of the received optical signals, processing electrical signals obtained during conversion, and transmitting the electrical signals to the electrical-optical conversion unit, and the electrical-optical conversion unit is used for regenerating optical signals through the received electrical signals, and the optical signals are multiplexed by the wavelength division multiplexer and transmitted to a receiving terminal. Although the regenerating optical network of the gigabit Ethernet passive optical network is not used as an active device, the transmission of large splitting ratio and ultra-long distance can be achieved through the gigabit Ethernet passive optical network; the cost is lower; and the implementation is more flexible, difficulties in operation are greatly reduced, and the product reliability is effectively improved.
Description
Technical field
The present invention relates to optical communication technique field, specifically, relate to a kind of 10,000,000,000 ethernet passive optical network reproduced light modules.
Background technology
Along with the continuous growth of user to high definition IPTV, the contour band width service demand of video monitoring, industrial circle is recognized gradually, existing EPON and GPON access network technology are all difficult to meet the demand of business long-run development, particularly in Fiber-To-The-Building (FTTB) and Fiber-To-The-Node (FTTN) scene.Optical access network all faces new upgrade requirement at aspects such as bandwidth, service supporting capacity and access node apparatus function and performances.According to one's analysis, each kinsfolk's per capita bandwidth demand is by the 125Mbps increasing from 30Mbps.Adopt at present the GEPON of 32 road topological structures and the transmission rate of GPON technology can reach respectively 1.25Gbps and 2.5Gbps, although can meet current demand, when having more HDTV (High-Definition Television) channel and Video service to add to come in, be just difficult to meet.64 road PON systems of future generation need to provide the bandwidth of 8.1Gbps just can satisfy the demand, even if next generation network is continued to use the topological structure on present each PON32 road, still need for home network provides transmission rate more than 4Gbps, this has also exceeded the capacity of existing PON.
Under this industry background, IEEE has promulgated the agreement IEEE802.3av of ethernet passive optical network of future generation (EPON) in September, 2009, the capacity of Optical Access Network is taken the lead in rising to 10Gbps.Many optical modules manufacturer, also the 10G EPON OLT/ONU light that put into production transmitting-receiving unification module, and also there are corresponding symmetry and asymmetrical product in many equipment vendors, and start extensive commercialization, but by the equipment of this standard production, can not well be applied some scene, as, the region of some user's intensities, need the EPON equipment (as: the EPON system of 1:256) of some large splitting ratios, and some combination areas of city and country, need the EPON equipment (as: 40km) of some long distances etc., cause the key point of these problems, that the defined optical power budget of primary standard is too low, even if maximum link budget also only has the propagation distance of link budget and the 20km of 29dB.
Based on this, how to improve the link computing of 10,000,000,000 ethernet passive optical networks, and then improve splitting ratio and single channel transmission range, be the problem that the present invention mainly solves.
Summary of the invention
The present invention, in order to solve the low problem of existing 10,000,000,000 ethernet passive optical network link computing, provides a kind of 10,000,000,000 ethernet passive optical network reproduced light modules, can effectively improve splitting ratio and the single channel transmission range of 10,000,000,000 ethernet passive optical networks.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of 10,000,000,000 ethernet passive optical network reproduced light modules, comprise wavelength division multiplexer, light-electric converting unit and electrical-optical converting unit, described wavelength division multiplexer receiving optical signals, light-electric converting unit will be sent to after its demultiplexing, described light-electric converting unit received light signal is carried out to electro-optical signal conversion and the changed signal of telecommunication is processed after be sent to electrical-optical converting unit, the received signal of telecommunication is re-generated light signal by described electrical-optical converting unit, sends to receiving terminal afterwards by wavelength division multiplexer is multiplexing.
Further, 10,000,000,000 described ethernet passive optical network reproduced light modules also comprise from winding unit, describedly receive the signal of telecommunication that light-electric converting unit sends from winding unit and are also forwarded to electrical-optical converting unit.
Further again, described light-electric converting unit comprises up light-electric converting unit and descending light-electric converting unit, and described electrical-optical converting unit comprises and described up light-electric converting unit and descending light-electric converting unit up electrical-optical converting unit and downlink electrical-optical conversion element one to one.
Further, in described each light-electric converting unit, comprise respectively photodetector, limiting amplifier and the first clock recovery device for electro-optical signal conversion; The signal of telecommunication that photodetector generates successively after the limited range enlargement of limiting amplifier and the shaping of the first clock recovery device, by from winding unit forwards to the electrical-optical converting unit corresponding with this light-electric converting unit.
Further, in described each electrical-optical converting unit, comprise respectively laser driver and and laser, described limiting amplifier generates " dropout goes alarm signal ", and (belonging to is here Loss of SignalDeassert, general Chinese translation is shown in quotation marks) and be sent to laser driver corresponding thereto as enable signal, the laser in described this electrical-optical of laser driver control converting unit carries out utilizing emitted light signal.
Described wavelength division multiplexer comprises the first wave division multiplexer being connected with descending light-electric converting unit and up electrical-optical converting unit, with the Second Wave division multiplexer being connected with downlink electrical-optical conversion element and up light-electric converting unit.
Wherein, described first wave division multiplexer is two wavelength division multiplexers that separate with Second Wave division multiplexer.
Or described first wave division multiplexer and Second Wave division multiplexer also can encapsulate by BOSA.
Preferably, described each electrical-optical converting unit also comprises the signal of telecommunication for being received from winding unit forwards and the second clock of its shaping recovered to device, and described second clock recovers device and is connected with the laser driver in this electrical-optical converting unit.
Based on 10,000,000,000 above-mentioned ethernet passive optical network reproduced light modules, the present invention has proposed a kind of 10,000,000,000 ether optical network systems simultaneously, comprise optical line terminal and optical network unit, also comprise reproduced light module proposed by the invention, described reproduced light module is arranged between optical line terminal and optical network unit, for the light signal transmitting between described optical line terminal and described optical network unit is regenerated, and send to receiving terminal, wherein, the receiving terminal of descending light is optical network unit, and the receiving terminal of up light is optical line terminal.By reproduced light module is arranged between optical line terminal and optical network unit, overcome the problem that optical network unit is few and transmission range is short that the link budget of existing 10,000,000,000 ethernet passive optical networks can support.
Compared with prior art, advantage of the present invention and good effect are: 10,000,000,000 ethernet passive optical network reproduced light modules of the present invention can realize large splitting ratio and over distance transmission; Than the dispersion tolerance that passes through to improve laser utilizing emitted light power, receiving sensitivity and raising laser, cost is lower; Realize more flexible and greatly reduce operation easier, effectively having improved the reliability of product, being convenient to technical staff's application.
Read by reference to the accompanying drawings after the detailed description of embodiment of the present invention, it is clearer that the other features and advantages of the invention will become.
Accompanying drawing explanation
Fig. 1 is a kind of example structure schematic diagram of 10,000,000,000 ethernet passive optical network reproduced light modules proposed by the invention;
Fig. 2 is another example structure schematic diagram of 10,000,000,000 ethernet passive optical network reproduced light modules proposed by the invention;
Fig. 3 is a kind of example structure schematic diagram of 10,000,000,000 ether optical network systems of the present invention;
Fig. 4 is another example structure schematic diagram of 10,000,000,000 ether optical network systems of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in more detail.
Embodiment mono-, the present embodiment is in order to solve the low problem of existing 10,000,000,000 ethernet passive optical network link computing, a kind of 10,000,000,000 ethernet passive optical network reproduced light modules are provided, by introduce 3R (Retime between optical line terminal (OLT) and optical network unit (ONU), Reshape, and Regenerate) reproduced light module, the link budget of 10,000,000,000 ethernet passive optical networks be can effectively improve, and then splitting ratio and the single channel transmission range of Optical Access Network improved.
Shown in Figure 1, the 10000000000 ethernet passive optical network reproduced light modules of the present embodiment comprise wavelength division multiplexer 4, the electric converting unit 1 of light one, and electrical-optical converting unit 3, by described 10,000,000,000 ethernet passive optical network reproduced light modules are arranged between OLT and ONU, wavelength division multiplexer 4 receives the light signal transmitting in optical fiber, light-electric converting unit 1 will be sent to after its demultiplexing, described light-electric converting unit 1 is carried out electro-optical signal conversion by received light signal and is generated the signal of telecommunication, and the generated signal of telecommunication is processed (such as limited range enlargement, shaping) after be sent to electrical-optical converting unit 3, the received signal of telecommunication is re-generated light signal by described electrical-optical converting unit 3, after multiplexing by wavelength division multiplexer 4, send to receiving terminal by optical fiber.
The 10000000000 ethernet passive optical network reproduced light modules of the present embodiment, first by light-electric converting unit 1, light signal is converted to the signal of telecommunication, due to before being converted to the signal of telecommunication, light signal loss is serious, we once receive on the detector sensitivity of 3R optical module, can guarantee packet loss invariably, and utilize CDR module that the signal of telecommunication is carried out after shaping, this signal of telecommunication carries information entrained in whole light signals, therefore, this signal of telecommunication is re-generated to light signal in electrical-optical converting unit 3, and then the light signal strength re-generating can reach one and compares high value, so can be by its light splitting again, and link budget enough uses, and then can improve splitting ratio and the single channel transmission range of Optical Access Network.
Shown in Figure 2,10,000,000,000 described ethernet passive optical network reproduced light modules also comprise from winding unit 2, be connected between light-electric converting unit 1 and electrical-optical converting unit 3 from winding unit 2, receive the signal of telecommunication that light-electric converting unit 1 sends, and the signal of telecommunication is forwarded to electrical-optical converting unit 3.
Because the transmission of light comprises uplink link (ONU to OLT) and downlink transfer link (OLT to ONU), what in uplink link, transmit is uplink optical signal, what in downlink transfer link, transmit is downlink optical signal, therefore, can respectively uplink optical signal and downlink optical signal be regenerated.So, described light-electric converting unit 1 comprises up light-electric converting unit 12 and descending light-electric converting unit 11, described electrical-optical converting unit 3 comprises and described up light-electric converting unit 12 and descending light-electric converting unit 11 up electrical-optical converting unit 32 and downlink electrical-optical conversion element 31 one to one, that is: up light-electric converting unit 12 and up electrical-optical converting unit 32 are in together in uplink link, and descending light-electric converting unit 11 and downlink electrical-optical conversion element 31 are in together in downlink transfer link.
As a specific embodiment, described descending light-electric converting unit 11 comprises photodetector 11-1, limiting amplifier 11-2 and the first clock recovery device 11-3; Up light-electric converting unit 12 comprises photodetector 12-1, limiting amplifier 12-2 and the first clock recovery device 12-3.Photodetector is used for carrying out electro-optical signal conversion, because the amplitude of the signal of telecommunication of photodetector output is to change with the variation of input light intensity, and light signal decay before input reproduced light module is very large, therefore weak light intensity signal causes electrical signal amplitude low, need to use limiting amplifier that the signal of telecommunication is carried out to limited range enlargement and the first clock recovery device carries out shaping.
Described downlink electrical-optical conversion element 31 comprises laser driver 31-1 and laser 31-2, described laser driver 31-1 is connected with laser 31-2, described downlink electrical-optical conversion element comprises laser driver 32-1 and laser 32-2, and described laser driver 32-1 is connected with laser 32-2.Take descending transmission link as example, light signal in optical fiber is through wavelength division multiplexer 4, descending light is out demultiplexed, be converted to the signal of telecommunication through photodetector 11-1, this signal of telecommunication is successively after the limited range enlargement of limiting amplifier 11-2 and the shaping of the first clock recovery device 11-3, through forwarding from winding unit 2, be sent to successively laser driver 31-1 and the laser 31-2 of downlink electrical-optical conversion element 31.The RX_LOS10 function of described limiting amplifier 11-2 generates the enable signal for driving described laser driver 31-1 simultaneously, and be sent to laser driver 31-1, wherein, the effect of RX_LOS10 is in the time of the minimum detection threshold that light signal strength height photodetector arranges, RX_LOS10 output low level, in the time that the input intensity of light signal is less than the minimum detection threshold of photodetector setting, RX_LOS10 exports high level, and laser is Low level effective.Described laser driver 31-1 drive laser 31-2 utilizing emitted light signal, can guarantee that laser 31-2 sends correct data in the correct time, realizes the conversion of electro-optical signal.In like manner, in this module, in uplink link, photo reversal principle is consistent with the photo reversal principle in downlink transfer link, do not repeat at this, it should be noted that, in the present embodiment, downlink optical signal comprises the 1577nm light signal of 10.3125Gbps speed and the 1490nm light signal of 1.25Gbps speed.Light signal enters wavelength division multiplexer 4 when demultiplexed, above-mentioned two kinds of descending light are separated, carry out respectively photo reversal, in order to improve regeneration rate, can be by adopting a set of identical equipment, i.e. photodetector 11-1 ', limiting amplifier 11-2 ', the first clock recovery device 11-3 ' as shown in Figure 1, and laser driver 31-1 ' and laser 31-2 ', coordinate photodetector 11-1, limiting amplifier 11-2, the first clock recovery device 11-3, and laser driver 31-1 and laser 31-2 process respectively two kinds of described descending light.But for up light, comprise the 10.3125Gbps light signal of 1270nm and the 1.25Gbps light signal of 1310nm, because the light of 1310nm and 1270nm wavelength all belongs to the light of 1260～1360nm channel, in order to save device cost, the unified light that adopts 1270nm forwards.
Accordingly, described wavelength division multiplexer 4 comprises the first wave division multiplexer 4-1 being connected with descending light-electric converting unit 11 and up electrical-optical converting unit 32, with the Second Wave division multiplexer 4-2 being connected with downlink electrical-optical conversion element 31 and up light-electric converting unit 12, described first wave division multiplexer 4-1 is at downlink transfer link by descending Optical Demultiplexing out, and in uplink link, the up optical coupling of regeneration is entered with same optical fiber of descending light in; Described Second Wave division multiplexer 4-2 for downlink transfer link by two kinds of descending recovery of regeneration with entering in same optical fiber, and by up light, from optical fiber, demultiplexing is out in uplink link.
Wherein, described first wave division multiplexer 4-1 can be two wavelength division multiplexers that separate with Second Wave division multiplexer 4-2, also optical device can be integrated into the form of BOSA encapsulation.
In order to make the signal of telecommunication obtain further shaping, described downlink electrical-optical conversion element 31 also comprises for being received from the signal of telecommunication that winding unit 2 forwards and the second clock of its shaping being recovered to device 31-0, described second clock recovers the laser driver in device 31-0 and this electrical-optical converting unit, and laser driver 31-1 connects.In like manner, also can before laser driver 31-1 ' and laser driver 32-2, recover device by setting up a second clock respectively, make the transmitted signal of telecommunication obtain better shaping, obtain better conversion effect.
As shown in Figure 3, present embodiment has proposed a kind of 10,000,000,000 ether optical network systems simultaneously, comprise optical line terminal OLT and optical network unit ONU, also comprise the reproduced light module 3R Module that the present embodiment proposes, described reproduced light module 3R Module is arranged between optical line terminal OLT and optical network unit ONU, for the light signal transmitting between described optical line terminal OLT and described optical network unit is regenerated, and send to receiving terminal, wherein, the receiving terminal of descending light is optical network unit, and the receiving terminal of up light is optical line terminal.By reproduced light module is arranged between optical line terminal and optical network unit, overcome the problem that optical network unit is few and transmission range is short that the link budget of existing 10,000,000,000 ethernet passive optical networks can support.
How detailed these 10,000,000,000 ethernet passive optical network reproduced light modules of introduction realize the budget of raising system link below.Take 10G EPON Optical Access Network as example, downlink optical signal and uplink optical signal have respectively two-way, respectively:
(1) the 1577nm light signal of descending 10.3125Gbps speed;
(2) the 1490nm light signal of descending 1.25Gbps speed;
(3) the 1270nm light signal of up 10.3125Gbps speed;
(4) the 1310nm light signal of up 1.25Gbps speed;
The optical link OLT of central office sends the signal of 10.3125Gbps down link, luminous power is 2dBm, through the long fine transmission of 20km, and connect this reproduced light module 3R Module through the optical splitter of 1: 32, known by calculating, now luminous power is-20.52dBm, and the receiving sensitivity of this reproduced light module 3R Module is at least-28.52dBm, therefore be enough to satisfy the demand, by the regeneration of this reproduced light module, can obtain being at least again the light of 2dBm, therefore, if there is more access user or user's transmission range farther, can be by the further light splitting of light and the transmission of the output of this optical module, and can further regenerate by accessing this optical module as required, until arrival user side, the access way of the access 10,000,000,000 ether passive networks of the reproduced light module of the present embodiment is applicable to existing in-plant user in access user, there is again remote user.
Fig. 4 is another example structure figure of the present invention's 10,000,000,000 ether optical network systems, by optical module 3R Module is arranged between OLT and optical splitter, facilitate the user's signal transmission to distance, and again by optical splitter light splitting, increase access customer number, the access way of access 10,000,000,000 passive networks of the reproduced light module of the present embodiment is applicable to all users and is remote subscriber.
The present invention is by introducing a kind of reproduced light module, under prior art condition, can realize large splitting ratio and over distance transmission, than the dispersion tolerance that passes through to improve laser utilizing emitted light power, receiving sensitivity and raising laser, there is lower cost, implementation more flexibly, and greatly reduce operation easier, effectively improve the reliability of product, be convenient to technical staff's application.
This technology is not limited only to 10G EPON system; GPON, EPON and XGPON system can be expanded use equally; certainly; above-mentioned explanation is not limitation of the present invention; the present invention is also not limited in above-mentioned giving an example; variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present invention, also should belong to protection scope of the present invention.
Claims (9)
1. an ethernet passive optical network reproduced light module, it is characterized in that: comprise wavelength division multiplexer, light-electric converting unit, and electrical-optical converting unit, described wavelength division multiplexer receiving optical signals, light-electric converting unit will be sent to after its demultiplexing, described light-electric converting unit received light signal is carried out to electro-optical signal conversion and the changed signal of telecommunication is processed after be sent to electrical-optical converting unit, the received signal of telecommunication is re-generated light signal by described electrical-optical converting unit, send to receiving terminal afterwards by wavelength division multiplexer is multiplexing, described each light-electric converting unit comprises photodetector and limiting amplifier, described each electrical-optical converting unit comprise respectively laser driver and and laser, " dropout goes alarm signal " that described limiting amplifier generates is as enable signal and be sent to laser driver corresponding thereto, laser in described this electrical-optical of laser driver control converting unit carries out utilizing emitted light signal.
2. 10,000,000,000 ethernet passive optical network reproduced light modules according to claim 1, it is characterized in that: 10,000,000,000 described ethernet passive optical network reproduced light modules also comprise from winding unit, describedly receive the signal of telecommunication that light-electric converting unit sends from winding unit and be also forwarded to electrical-optical converting unit.
3. 10,000,000,000 ethernet passive optical network reproduced light modules according to claim 2, it is characterized in that: described light-electric converting unit comprises up light-electric converting unit and descending light-electric converting unit, described electrical-optical converting unit comprises and described up light-electric converting unit and descending light-electric converting unit up electrical-optical converting unit and downlink electrical-optical conversion element one to one.
4. 10,000,000,000 ethernet passive optical network reproduced light modules according to claim 3, is characterized in that: described each light-electric converting unit comprises respectively the first clock recovery device; The signal of telecommunication that photodetector generates successively after the limited range enlargement of limiting amplifier and the shaping of the first clock recovery device, by from winding unit forwards to the electrical-optical converting unit corresponding with this light-electric converting unit.
5. 10,000,000,000 ethernet passive optical network reproduced light modules according to claim 4, it is characterized in that: described wavelength division multiplexer comprises the first wave division multiplexer being connected with descending light-electric converting unit and up electrical-optical converting unit, with the Second Wave division multiplexer being connected with downlink electrical-optical conversion element and up light-electric converting unit.
6. 10,000,000,000 ethernet passive optical network reproduced light modules according to claim 5, is characterized in that: described first wave division multiplexer is two wavelength division multiplexers that separate with Second Wave division multiplexer.
7. 10,000,000,000 ethernet passive optical network reproduced light modules according to claim 5, is characterized in that: described first wave division multiplexer and Second Wave division multiplexer encapsulate by BOSA.
8. 10,000,000,000 ethernet passive optical network reproduced light modules according to claim 1, it is characterized in that: described each electrical-optical converting unit also comprises the signal of telecommunication for being received from winding unit forwards and the second clock of its shaping is recovered to device, the laser driver that described second clock recovers in the electrical-optical converting unit at device and its place is connected.
9. an ether optical network system, comprise optical line terminal and optical network unit, it is characterized in that: also comprise the reproduced light module as described in any one claim in claim 1 to 8, described reproduced light module is arranged between optical line terminal and optical network unit, be used for the optical regeneration transmitting between described optical line terminal and described optical network unit, and send to receiving terminal.
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| CN102917283B (en) * | 2012-10-15 | 2015-09-30 | 青岛海信宽带多媒体技术有限公司 | Optical network unit and optical module for optical network unit |
| CN104253651A (en) * | 2014-10-13 | 2014-12-31 | 国家电网公司 | 10 Gigabit burst mode optical amplifier based on photo-electric optical regeneration |
| CN109861758A (en) * | 2019-03-29 | 2019-06-07 | 广州芯泰通信技术有限公司 | A kind of the 5G forward pass system and equipment of novel low-cost low delay |
| CN110366058B (en) * | 2019-06-26 | 2022-03-08 | 深圳市普威技术有限公司 | ONU port test circuit, device and system |
| CN110557692B (en) * | 2019-08-12 | 2021-01-05 | 华为技术有限公司 | Optical splitter and method of transmitting optical signals |
| CN115441953B (en) * | 2022-08-31 | 2023-06-16 | 厦门亿芯源半导体科技有限公司 | Optical transmitting chip based on OTN transmission technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364842A (en) * | 2007-08-09 | 2009-02-11 | 华为技术有限公司 | Apparatus and system prolonging transmission distance of passive optical network |
| CN101369846A (en) * | 2007-08-14 | 2009-02-18 | 华为技术有限公司 | Passive optical network signal monitoring method and electric relay reactivator |
| EP2200191A1 (en) * | 2007-09-26 | 2010-06-23 | Huawei Technologies Co., Ltd. | A method, a system and an apparatus for protection in a long reach passive optical network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364842A (en) * | 2007-08-09 | 2009-02-11 | 华为技术有限公司 | Apparatus and system prolonging transmission distance of passive optical network |
| CN101369846A (en) * | 2007-08-14 | 2009-02-18 | 华为技术有限公司 | Passive optical network signal monitoring method and electric relay reactivator |
| EP2200191A1 (en) * | 2007-09-26 | 2010-06-23 | Huawei Technologies Co., Ltd. | A method, a system and an apparatus for protection in a long reach passive optical network |
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