CN201590827U - Gigabit fibre optic repeater - Google Patents
Gigabit fibre optic repeater Download PDFInfo
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- CN201590827U CN201590827U CN2009201814779U CN200920181477U CN201590827U CN 201590827 U CN201590827 U CN 201590827U CN 2009201814779 U CN2009201814779 U CN 2009201814779U CN 200920181477 U CN200920181477 U CN 200920181477U CN 201590827 U CN201590827 U CN 201590827U
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Abstract
The utility model discloses a gigabit fibre optic repeater, which comprises a photoelectric conversion control circuit, an interface circuit and a power supply circuit which is respectively connected with the photoelectric conversion control circuit and the interface circuit, wherein, the photoelectric conversion control circuit comprises two photoelectric conversion units, a network management unit and a signal processing unit which respectively connected with the photoelectric conversion units and the network management unit; and the interface circuit comprises two optical interface units connected with the photoelectric conversion units respectively. The repeater has a network management function, reduces the maintenance cost and improves the stability of network signal transmission.
Description
Technical field
The utility model belongs to the communications field, particularly a kind of repeater that is used for the signal transmission.
Background technology
Repeater (RP repeater) is a kind of device that connects network line, is usually used in the two-way forwarding work of physical signalling between two network nodes.Repeater is the simplest network interconnection device, mainly finishes the function of physical layer, is responsible on the physical layer of two nodes step-by-step and transmits information, finishes the duplicating of signal, adjustment and enlarging function, prolongs the length of network with this.Owing to there is loss, Chuan Shu signal power can decay gradually on the line, to cause distorted signals when decaying to a certain degree, therefore can cause receiving mistake, repeater designs for addressing this problem, it finishes the connection of physical circuit, and the signal of decaying is amplified, and keeps identical with former data.Repeater converts light signal to the signal of telecommunication exactly, regenerates, and reduction converts light signal output again to after a series of processing such as amplification, and its integrated stand composition as shown in Figure 1.
In long haul optical transmission systems, the factor that influences the signal transmission can be divided three classes substantially: first, the spontaneous emission noise of image intensifer (ASE) can cause the signal to noise ratio of light signal to descend, main cause is that image intensifer is in amplifying signal, noise, also introduced new ASE noise, just the noise of this amplifier improves the overall noise level, and Optical Signal To Noise Ratio descends; The second, the influence of the insertion of various devices and external environment condition can cause the shake of light pulse in the communication line; The 3rd, many unfavorable factors comprise that optical fiber attenuation, chromatic dispersion and nonlinear effect etc. can cause optical signal power decline, wave distortion in the optical fiber.So in long haul transmission system, need the incoming fiber optic repeater, to realize better communication.
Fibre optic repeater commonly used at present, all work alone, therefore when needs carry out system upgrade or detection and safeguard, must reach the spot every repeater is operated separately, thereby line service amount and expense expense have been increased greatly, and can't in time understand the operating state of repeater, can't guarantee the stability and the reliability of network signal transmission.
In addition, fibre optic repeater generally can be divided into 1R, 2R, and three types of 3R, its attainable function distributes as described below:
1R is balanced to be amplified: the small-signal frame of the distortion that will import amplifies with equilibrium;
2R is balanced to be amplified: the small-signal frame of the distortion that will import amplifies with equilibrium,
Identification regeneration: waveform is regenerated again, obtain the same pulse shape with transmitting terminal;
3R is balanced to be amplified: the small-signal frame of the distortion that will import amplifies with equilibrium,
Timing extraction: from input signal, extract clock frequency, and obtain commutator pulse,
Identification regeneration: waveform is regenerated again, obtain the same pulse shape with transmitting terminal.
The 1R regenerative repeater big function that realized resetting, 1R is based on analogue technique, and the 2R repeater has been realized reset big and reformation type function, is the digital processing technology that adds signal level on the basis of 1R, and 1R and 2R have only realized the partial function of 3R in regenerating.The 3R repeater not only can be eliminated the integrated noise of cascade, and the function of retiming than the 2R repeater moreed, can solve the signal pulse time jitter problem that device causes in the optical fiber telecommunications line, the function of 3R repeater is more complete as can be known, yet, common fibre optic repeater mostly is 1R or 2R at present, can't satisfy actual needs.
In addition, in today that network traffics constantly rise, the user side disposal ability improves constantly, continuous pursuit to the network bandwidth, the end user needs network to have higher performance and stability, the particularly transmission of multimedia messages in network more needs network can hang down time delay, high-quality the information of transmitting.1,000,000,000 networks withdraw from gradually, and virtual net standard 802.1Q and the priority criteria 802.1p for the 10/100/1000Mbps exploitation promotes simultaneously, and kilomega network has become the mainstream technology that constitutes network backbone.Gigabit Ethernet will provide 10 times to the performance of Fast Ethernet and with existing 10/100 ethernet standard compatibility.Gigabit Ethernet provides the wideband transmit exchange of high performance-price ratio for local area network (LAN) and metropolitan area network, so the demand prospect of gigabit repeater is boundless, Figure 2 shows that the application schematic diagram of gigabit repeater 40 in Network Transmission, it is connected between two fiber optical transceivers 50, realizes the switching of signal.
The utility model content
Main purpose of the present utility model be to provide a kind of kilomega optic fiber repeater, but it has network management function, reduces maintenance cost, improves the stability of network signal transmission.
Secondary objective of the present utility model is to provide a kind of kilomega optic fiber repeater, and it has the 3R function, can realize multiple services transparent transmission.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of kilomega optic fiber repeater, comprise opto-electronic conversion control circuit, interface circuit and the power circuit that is connected with the two respectively, the opto-electronic conversion control circuit comprises two photoelectric conversion units, a network management unit and the signal processing unit that is connected with the two respectively, interface circuit comprises two Guang Kou unit, is connected with aforementioned photoelectric conversion unit respectively.
Above-mentioned signal processing unit also connects a controller unit.
Above-mentioned Guang Kou unit comprises the optic module that fiber optic communication network connects, and this optic module is single mode or multimode fiber module.
After adopting such scheme, the utility model is by increasing by a network management unit, realize the function of networking, administrative staff can be by the management of network management platform realization to the network equipment, at any time understand the operating state of each repeater, and can onlinely carry out regular maintenance, thus reduce maintenance cost, increase work efficiency.
In addition, the utility model also can increase controller unit, thereby realizes adaptive multi-service transmission, thereby reduces user's use cost.
Description of drawings
Fig. 1 is the principle of work and power schematic diagram of existing repeater;
Fig. 2 is the existing connection diagram of kilomega optic fiber repeater in Network Transmission;
Fig. 3 is a structural representation of the present utility model;
Fig. 4 is the structural representation of signal processing unit in the utility model;
Fig. 5 is the integrated stand composition of network management unit in the utility model;
Fig. 6 is the schematic diagram of a kind of application function of the utility model;
Fig. 7 is the schematic diagram of the another kind of application function of the utility model.
Embodiment
With reference to shown in Figure 3, the utility model provides a kind of kilomega optic fiber repeater 10, and it comprises power circuit 1, opto-electronic conversion control circuit 2 and interface circuit 3, below is introduced respectively.
Interface circuit 3 comprises two Guang Kou unit 31, and described Guang Kou unit 31 is connected to fiber optic communication network by optic module 32, and optic module 32 can be single mode or multimode fiber module herein, and Guang Kou unit 31 also is connected to opto-electronic conversion control circuit 2 respectively.
Opto-electronic conversion control circuit 2 comprises a signal processing unit 21, two photoelectric conversion units 22 and a network management unit 23, two photoelectric conversion units 22 connect the Guang Kou unit 31 in the aforementioned interface circuit 3 respectively, convert the light signal that receives to the signal of telecommunication, sending into signal processing unit 21 handles, and, retransfer again to Guang Kou unit 31 with electrical signal conversion Cheng Guang/signal that signal processing unit 21 is finished dealing with.
At first with reference to shown in Figure 4, it is the operation principle schematic diagram of signal processing unit 21, enter separately adaptive equalizer respectively by the differential signal of two Guang Kou unit 31 input, and by general input buffer cache management, core is the clock and data recovery array, clock and data recovery circuit (CDR) is analyzed data and is decomposited the serial rate clock, according to the clock that generates by voltage-controlled oscillator, and the data identification device of identification input data; The input data are carried out the frequency divider of frequency division; The clock that detection is generated by voltage-controlled oscillator and in frequency divider frequency division the input data between phase difference, generate the phase comparator of the phase signal that is used for eliminating this detected phase difference; Adjust frequency of oscillation according to phase signal and generate clock, and output to the voltage-controlled oscillator of data identification device and phase comparator, like this, the clock and data recovery circuit is handled the recovery of data and clock, reaches regeneration and timing function again; Then enter the pre-reinforcement of output after signal recovers, promptly before signal sends, it is strengthened in advance, so that the signal quality on the receiver is as the quality of original transmission.When signal kept surpassing the time of a bit on DC level, pre-reinforcement will be raised high fdrequency component and be reduced low frequency component, thereby reached the function that signal amplifies.
Adopt the cassette structure, when being put into the webmaster cabinet, major function has: can carry out webmaster, can pass through network inquiry integrated circuit board type.Can be by webmaster inquiry and configuration, the line side is to the state of the fault transfer of user side, and user side is to the state of the fault transfer in line side, the state that the line side fault is returned, the state that the user side fault is returned, the CDR operating state, the CDR operating rate enables or forbids.But and information trunk trackside light mouth connection status, user's sidelight mouth connection status, the state whether circuit sidelight mouth lock is lost, the state whether user's sidelight mouth lock is lost.As can be known, by network management unit 23, need not to arrive the working site of each fibre optic repeater, can upgrade and regular maintenance, greatly reduce line service amount and expense expense, and can in time know the operating state of each repeater, guarantee the stability of network signal transmission, strengthen operator's quick reaction capability, improve service quality, make telecom operators to enlarge and to safeguard radius by the kilomega optic fiber repeater, increase work efficiency, reduce maintenance cost.
In addition, in the present embodiment, signal processing unit 21 also connects a controller unit 24, with reference to shown in Figure 3, this controller unit 24 can be by the setting to signal processing unit 21, reach multiple services transparent transmission, specifically, controller unit 24, signal processing unit 21, self adaptation multi-service transport module is formed in photoelectric conversion unit 22 and Guang Kou unit 31, when using the two-forty shaven head, its speed is backward compatible, can realize multiple business (is comprised Gb, Stm-4, Stm-1, the SDH of standards such as Fe or Ethernet business, and other non-standard business) transparent transmission.Implementation procedure is: signal enters light inlet unit 31, enter photoelectric conversion unit 22 again and be converted to the signal of telecommunication, whether signal processing unit 21 detects photoelectric conversion unit 22 always the signal input, if there is not the signal input, LOA (LOSS OF ACTIVITY) register is a low level, does not promptly have data flow; If when having detected signal, the LOA register is a high level, and LOL (LOSS OF LOCK) register is low level (acquiescence), controls by controller, CDR speed is respectively by FE, Gb, STM1, STM4, STM16 compares from high to low, locks on corresponding speed, is self adaptation; When if manual adjustments LOL register is high level, then need manually to stir the speed of toggle switch with configuration CDR, realize transparent transmission.
Adopt controller unit 24 to add the toggle switch circuit, addressable signal processing unit internal register, carry out function setting, functions such as the type that promptly transport service is set, fault shifts enable/disable, CDR enable/disable, light mouth, state demonstration, loopback test, rate setting.Toggle switch is provided with priority and is lower than webmaster.During no webmaster, this configuration effectively; When webmaster is arranged, be as the criterion, force loopback that priority is set and be higher than webmaster with webmaster.In addition, controller unit 24 also can realize fibre optic repeater and OAMAgent card all communicate by letter, thereby finally realize the collection of status information of equipment and the configuration of operating state.
Need to prove, the utility model is by increasing controller unit 24, make fibre optic repeater 10 have the 3R function, its basic function is balanced the amplification, identification regeneration and timing again, realize that in electric territory pulse signal amplifies and shaping, the last generation of driving light source again meets the defeated eventually light pulse signal that requires and continues to transmit along optical fiber.Output optical pulse after regeneration has been eliminated additional noise and wave distortion fully, even in the system that forms by a plurality of repeaters, noise and distort and also can not accumulate, this just digital communication can realize the reason of long haul communication.Can enable or forbid CDR by controller unit 24 setting, the function that repeater has 3R or 2R is set thereby reach.Clock and data recovery circuit (CDR) is analyzed data and is decomposited the serial rate clock, and the shake on the CDR shows as the clock rate small frequency and changes.If enable CDR, being on 2R function basis increases timing function again, is 3R.
In sum, kilomega optic fiber repeater 10 provided by the utility model, function with single multimode conversion and expanding transmission distance, with reference to shown in Figure 6, two repeaters 10 are connected between the light mouth gigabit switch 20,30, the multimode conversion of signals that can at first light mouth gigabit switch 20 be sent is a single mode signal, the repeater 10 that transfers to the other end again is converted to the multimode signal, send light inlet gigabit switch 30, realized the interconnection of light jaws equipment, but and remote transmission signal, and can reduce the decay of signal, improve the reliability of transmission.Fig. 7 represents that then repeater 10 provided by the utility model can realize the professional transmission of long distance, and OEO is provided the relaying regeneration scheme of (Optical-Electrical-Optical, light-electrical-optical).
Above embodiment only is explanation technological thought of the present utility model; can not limit protection range of the present utility model with this; every according to the technological thought that the utility model proposes, any change of being done on the technical scheme basis all falls within the utility model protection range.
Claims (3)
1. kilomega optic fiber repeater, it is characterized in that: comprise opto-electronic conversion control circuit, interface circuit and the power circuit that is connected with the two respectively, the opto-electronic conversion control circuit comprises two photoelectric conversion units, a network management unit and the signal processing unit that is connected with the two respectively, interface circuit comprises two Guang Kou unit, is connected with aforementioned photoelectric conversion unit respectively.
2. kilomega optic fiber repeater as claimed in claim 1 is characterized in that: described signal processing unit also connects a controller unit.
3. kilomega optic fiber repeater as claimed in claim 1 is characterized in that: described Guang Kou unit comprises the optic module that fiber optic communication network connects, and this optic module is single mode or multimode fiber module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201814779U CN201590827U (en) | 2009-11-13 | 2009-11-13 | Gigabit fibre optic repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201814779U CN201590827U (en) | 2009-11-13 | 2009-11-13 | Gigabit fibre optic repeater |
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| CN201590827U true CN201590827U (en) | 2010-09-22 |
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| CN2009201814779U Expired - Fee Related CN201590827U (en) | 2009-11-13 | 2009-11-13 | Gigabit fibre optic repeater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155943A (en) * | 2016-12-06 | 2018-06-12 | 北京旋极信息技术股份有限公司 | A kind of optical fiber transmission trunking methods, devices and systems |
-
2009
- 2009-11-13 CN CN2009201814779U patent/CN201590827U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155943A (en) * | 2016-12-06 | 2018-06-12 | 北京旋极信息技术股份有限公司 | A kind of optical fiber transmission trunking methods, devices and systems |
| CN108155943B (en) * | 2016-12-06 | 2021-01-08 | 北京旋极信息技术股份有限公司 | Optical fiber transmission relay method, device and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liang Zhida Inventor after: Lin Jiansen Inventor after: Zhang Rui Inventor after: Lv Donghai Inventor after: Hong Yade Inventor before: Liang Zhida Inventor before: Lin Jiansen Inventor before: Zhang Rui Inventor before: Lv Donghai Inventor before: Hong Yude |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIANG ZHIDA LIN JIANSEN ZHANG RUI LV DONGHAI HONG YUDE TO: LIANG ZHIDA LINJIANSEN ZHANG RUI LV DONGHAI HONG YADE |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20141113 |
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| EXPY | Termination of patent right or utility model |