CN1777065A - Single-fiber transmission converter capable of concurrently transmitting a single-fiber double-wave system and a two-fiber system signal - Google Patents
Single-fiber transmission converter capable of concurrently transmitting a single-fiber double-wave system and a two-fiber system signal Download PDFInfo
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- CN1777065A CN1777065A CNA2005101008270A CN200510100827A CN1777065A CN 1777065 A CN1777065 A CN 1777065A CN A2005101008270 A CNA2005101008270 A CN A2005101008270A CN 200510100827 A CN200510100827 A CN 200510100827A CN 1777065 A CN1777065 A CN 1777065A
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- single fiber
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Abstract
Characters are that transmission converter in single fiber at end A is composed of coupler 1, coupler 2, wavelength division multiplexer WDM1 and WDM2; the converter at end B is composed of coupler 3, coupler 4, wavelength division multiplexer WDM3 and WDM4. Through COM1 at A end, single optical fiber, and COM2 at A end, two converters are connected to each other. Features are: small volume, light weight, good stability, easy of installation and maintenance with no electrical source. The converter is applicable to backbone network of optical fiber, integrated services network of optical fiber, CATV, metropolitan area network or local area network.
Description
Technical field
The present invention relates to optical-fibre communications, especially optical fiber of a kind of usefulness just can transmit the single fiber transmission converter of a single fiber double wave system and two fine system signals simultaneously.
Background technology
Along with developing rapidly of optical communication, employed optical fiber cable is more and more.In order to solve some areas optical fiber situation in short supply and to make full use of existing fiber resource, technology that some are new and new product occur successively.Adopting the single fiber double wave optical transmission system of wavelength-division multiplex technique is exactly one of them.This system utilizes the two-way signaling (Fig. 1) of an optical fiber by a system of two wavelength transmission, and relatively it has saved the optical fiber of half with the two fine systems (Fig. 2) of single ripple commonly used.Except the single fiber double wave system that adopts wavelength-division multiplex technique, also having a class is only to use the single fiber list ripple transmission system (Fig. 3) of a wavelength.This type systematic adopts single fiber bi-directional transmission converter (single wavelength) to convert the two fine transmission of the single wave system system of two fibres to the single fiber bi-directional transmission.In addition, also have the single fiber bi-directional transmission converter (dual wavelength) of a class now based on wavelength-division multiplex technique and single fiber list ripple transmitted in both directions technology.The signal that this class single fiber bi-directional transmission converter (dual wavelength) can be united two fine single wave system of two different wave lengths simultaneously carries out four-way transmission (Fig. 4) by an optical fiber.More than existing corresponding product on this three classes single fiber transmission technology market.These products are in short supply and make full use of fiber resource and play a part positive to solving some areas optical fiber.Can but along with the development of optical communication, some new requirements be suggested, propose add the fine system of a pair of as the place of having used single fiber double wave system at some on the simple optical fiber that has used again.Promptly on an optical fiber, transmit the signal of a single fiber double wave system and the signal of two fine systems.
Summary of the invention
Purpose of the present invention is intended to overcome the deficiencies in the prior art and a kind of single fiber transmission converter that can transmit the two fine system signals of a single fiber double wave system and simultaneously that optical fiber makes full use of fiber resource of both having saved is provided.
The object of the present invention is achieved like this:
A kind of single fiber transmission converter that can transmit a single fiber double wave system and two fine system signals simultaneously, it is characterized in that this single fiber transmission converter by coupler 1, coupler 2 and wavelength division multiplexer WDM1, wavelength division multiplexer WDM2 form A end transducer and coupler 3, coupler 4 and wavelength division multiplexer WDM3, wavelength division multiplexer WDM4 forms B end transducer, two transducers hold public port COM2 to connect to form by A end public port COM1 through simple optical fiber and B.
---described coupler 1, coupler 2, coupler 3 and coupler 4 all are provided with three ports.
---described wavelength division multiplexer WDM1, wavelength division multiplexer WDM2, wavelength division multiplexer WDM3 and wavelength division multiplexer WDM4 all are provided with three ports.
---the light allocation proportion scope of described coupler 1 is 10%: 90%～30%: 70%; insert loss and isolation two indexes with decision; transmission range and laser protection are had substantial connection, and concrete data are on deciding by inserting loss and the requirement of isolation two indexes.
---the light allocation proportion scope of described coupler 2 is 10%: 90%～30%: 70%; insert loss and isolation two indexes with decision; transmission range and laser protection are had substantial connection, and concrete data are on deciding by inserting loss and the requirement of isolation two indexes.
---described wavelength division multiplexer WDM1 is provided with the port T that receives the second wavelength light signal and send the first wavelength light signal
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---the light allocation proportion scope of described coupler 3 is 10%: 90%～30%: 70%; insert loss and isolation two indexes with decision; transmission range and laser protection are had substantial connection, and concrete data are on deciding by inserting loss and the requirement of isolation two indexes.
---the light allocation proportion scope of described coupler 4 is 10%: 90%～30%: 70%; insert loss and isolation two indexes with decision; transmission range and laser protection are had substantial connection, and concrete data are on deciding by inserting loss and the requirement of isolation two indexes.
---described wavelength division multiplexer WDM4 is provided with the port T that receives the first wavelength light signal and send the second wavelength light signal
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The present invention can be transmitted the signal of a single fiber double wave system and the signal of two fine systems simultaneously on an optical fiber, be a kind of application of optical passive component in optical communication.Coupler is the passive device of a kind of widely used light, and it has three ports (Fig. 5), light signal can from end " 3 " enter and separated into two parts from port " 2 ", " 3 " outputs (splitter).Two light signals also can enter from port " 1 ", " 2 " respectively, and synthetic back is in " 3 " outputs (mixer).Two light signals can also enter from port " 1 ", " 3 " respectively simultaneously, and the signal that enters " 1 " is from " 3 " output, and the signal that enters " 3 " is from " 1 ", " 2 " output.Wavelength division multiplexing (WDM) also has three ports: go into 1 port, go into 2 ports and public port (Fig. 6).Its effect is a partial wave and close ripple, promptly go into the light signal of 1 wavelength and can only and go into dealing between 1 port at public port, and the light signal of going into 2 wavelength can only and be gone into dealing between 2 ports at public port.
The present invention can be transmitted the signal of a single fiber double wave system and the signal of two fine systems simultaneously on an optical fiber, it has saved two optical fiber than the isolated operation of two fine systems of a single fiber double wave system.Structure chart of the present invention as shown in Figure 8.Each is made up of side a and b two wavelength division multiplexers (WDM) and two couplers.Its operation principle is as follows: with 1310nm is first light signal, 1550nm is that second light signal is an example: the 1310nm light signal that is sent by single fiber double wave optical transceiver enters from the single fiber transmission converter T13R15 port that A holds, from the output of COM1 port, this output signal is transferred to the COM2 port of B end by single fiber behind wavelength division multiplexer WDM1,1310nm coupler 1 and wavelength division multiplexer 2.The light signal that enters B end single fiber transmission converter is received by single fiber double wave optical transceiver behind wavelength division multiplexer WDM3,1310nm coupler 3 and wavelength division multiplexer WDM4 and port T15R13, finishes the transmission of first direction.Equally, the 1550nm light signal that enters from B end T15R13 is finished the transmission of second direction through WDM4 → 1550nm coupler 4 → WDM3 → COM2 → single fiber → COM1 → WDM2 → 1550nm coupler 2 → WDM1 → T13R15 → A port single fiber double wave optical transceiver.The transmission of this both direction has constituted the communication capacity of single fiber double wave system.In addition, the 1550nm light signal that enters A end T1 is finished the transmission of the 3rd direction through 1550nm coupler 2 → WDM2 → COM1 → single fiber → COM2 → WDM3 → 1550nm coupler 4 → WDM4 → R2 → two fine optical transceivers of arrival B end.The 1310nm light signal that the two fine optical transceivers of B end send is through T2 → 1310nm coupler 3 → WDM3 → COM2 → single fiber → COM1 → WDM2 → 1310m coupler 1 → R1 → two fine optical transceivers of A end, finish the transmission of four direction, had third direction and four directions to transmission, two fine systems have also just possessed the ability that communicates.What should the present invention go in the A termination is the two fine optical transceivers of 1310nm.It sends is the signal of 1310nm wavelength and what receive is the signal of 1550nm wavelength.And what go in the B termination is the two fine optical transceivers of 1550nm, and it sends is the signal of 1550nm wavelength and what receive is the signal of 1310nm wavelength.Because the wave-length coverage of the incoming end of general optical transceiver is the broadband, the optical transceiver of 1310nm can receive the 1550nm signal, and the optical transceiver of 1550nm also can receive the signal of 1310nm.Just because of this characteristics of optical transceiver use the single fiber transmission converter that can transmit a single fiber double wave system and two fine system signals simultaneously could successfully transmit the signal of these two systems.
The allocation proportion of coupler can adopt 10: 90,20: 80 or 30: 70 in the single fiber transmission converter.The difference of ratio can influence inserts loss and two indexs of isolation.10: 90 and other two kinds of comparisons, its insertion loss is big, but isolation is also big, inserts the loss conference and lowers transmission range, but isolation becomes favourable to the protection luminescent device greatly.If isolation is too little, laser is subjected to the opposite end laser illumination can influence the performance of laser for a long time, even damages.When determining the coupler ratio, to take into account the requirement of two indexes.
The key technical indexes of the present invention sees Table 1, table 2.
The present invention is the applied in any combination that isolation technology in the EPON, optical coupling technology and light wave divide, belong to applied, innovative light passive product, it adopts the signal of single fiber double wave system of wavelength-division multiplex technique and the signal of two fine systems with one of the transmission that an optical fiber just can full duplex.The single fiber transmission converter that can transmit a single fiber double wave system and two fine system signals simultaneously provides a transparent passage can for the signal of two systems, and transmission rate is from 0～2.5Gbit/s continuous variable.The single fiber transmission converter that can transmit the two fine system signals of a single fiber double wave system and does not simultaneously need to change the optical transmission device at two ends when using.It is little, in light weight without power supply, volume, good stability and install and use easy to maintenance, can be widely used in the construction and the dilatation of fiber communication link net, optical fiber integrated services network, Optical Access Network, Optical CATV, the node dilatation of metropolitan area network, the construction of local area network (LAN).The use that can transmit the single fiber transmission converter of a single fiber double wave system and two fine system signals simultaneously will produce positive effect to making full use of fiber resource, the transformation that solves some areas optical fiber short supply state, optical fiber transmission network and emergency first-aid repair etc.
Description of drawings
Fig. 1 is the single fiber double wave communication system block diagram of available technology adopting wavelength-division multiplex technique.
Fig. 2 is two fine single ripple transmission system block diagrams in the prior art.
Fig. 3 is a single fiber list ripple transmission system block diagram in the prior art.
Fig. 4 is single fiber bi-directional transmission (dual wavelength) system block diagram in the prior art.
Fig. 5 is a coupler schematic diagram of the present invention.
Fig. 6 is a wavelength division multiplexer schematic diagram of the present invention.
Fig. 7 is a communication system block diagram of the present invention.
Fig. 8 is a structural representation of the present invention, and to go into 1=1310nm, going into 2=1550nm is example.
Fig. 9 is the application block diagram of the present invention in PDH, SDH and Ethernet etc.
Figure 10 is the present invention inserts optical fiber telephone in two fine systems an application block diagram.
Figure 11 is that computer of the present invention is to piecing together the test block diagram.
Figure 12 is an online computing test block diagram of the present invention.
Figure 13 is a technical indicator of the present invention.
Figure 14 is performance index of the present invention.
Figure 15 is that computer of the present invention is to piecing together result of the test.Observe 1 month (work hours) continuously with bag long 1518 and do not have the packet loss of discovery.
Figure 16 is an online computing result of the test of the present invention.Observe 1 month (work hours) continuously with bag long 1518 and do not have the packet loss of discovery.
Embodiment
One, can adopt the single fiber transmission converter in PDH, SDH and Ethernet etc., comparable conventional the application saved two optical fiber after the single fiber transmission converter was adopted in its connection as shown in Figure 9.
Two, in two fine systems, insert photographone, adopt the single fiber transmission converter under original two fine transmission system ruuning situations, to insert optical fiber telephone, connect square frame as shown in figure 10.
System test
1. computer is to piecing together test
The test block diagram as shown in figure 11, in order to check the transmission performance of two systems simultaneously, computer 1 links to each other with A end single fiber double wave optical transceiver, the optical transceiver of B end system 1 is exported the input that is connected the optical transceiver 3 of A end system 2 with network again, and computer 2 links to each other with the output of B end system 2 optical transceivers 4.
2. online computing test
The test block diagram as shown in figure 12, in order to check the transmission performance of two systems simultaneously, computer 1 links to each other with A end single fiber double wave optical transceiver, the optical transceiver of B end system 1 is exported the input that is connected the optical transceiver 3 of A end system 2 with network again, and computer 2 links to each other with the output of B end system 2 optical transceivers 4.
Result of the test
1. the computer expert crosses result such as Figure 15, shown in Figure 16 that Ethernet is pieced together DNS
2. it is working properly that the computer expert crosses the converter system online
The single fiber transmission converter that can transmit a single fiber double wave system and two fine system signals simultaneously is applied in any combination that isolation technology in the EPON, optical coupling technology and light wave divide, belong to applied, innovative light passive product, it adopts the signal of single fiber double wave system of wavelength-division multiplex technique and the signal of two fine systems with one of the transmission that an optical fiber just can full duplex.The single fiber transmission converter that can transmit a single fiber double wave system and two fine system signals simultaneously provides a transparent passage can for the signal of two systems, and transmission rate is from 0～2.5Gbit/s continuous variable.The single fiber transmission converter that can transmit the two fine system signals of a single fiber double wave system and does not simultaneously need to change the optical transmission device at two ends when using.It is little, in light weight without power supply, volume, good stability and install and use easy to maintenance, can be widely used in the construction and the dilatation of fiber communication link net, optical fiber integrated services network, Optical Access Network, Optical CATV, the node dilatation of metropolitan area network, the construction of local area network (LAN).The use that can transmit the single fiber transmission converter of a single fiber double wave system and two fine system signals simultaneously will produce positive effect to making full use of fiber resource, the transformation that solves some areas optical fiber short supply state, optical fiber transmission network and emergency first-aid repair etc.
Claims (9)
1. single fiber transmission converter that can transmit the two fine system signals of a single fiber double wave system and simultaneously, it is characterized in that this single fiber transmission converter by coupler 1, coupler 2 and wavelength division multiplexer WDM1, wavelength division multiplexer WDM2 form A end transducer and coupler 3, coupler 4 and wavelength division multiplexer WDM3, wavelength division multiplexer WDM4 forms B end transducer, two transducers hold public port COM2 to connect to form by A end public port COM1 through simple optical fiber and B.
2. single fiber transmission converter according to claim 1 is characterized in that described coupler 1, coupler 2, coupler 3 and coupler 4 all are provided with three ports.
3. single fiber transmission converter according to claim 1 is characterized in that described wavelength division multiplexer WDM1, wavelength division multiplexer WDM2, wavelength division multiplexer WDM3 and wavelength division multiplexer WDM4 all are provided with three ports.
4. single fiber transmission converter according to claim 1 is characterized in that the light allocation proportion scope of described coupler 1 is 10%: 90%～30%: 70%.
5. single fiber transmission converter according to claim 1 is characterized in that the light allocation proportion scope of described coupler 2 is 10%: 90%～30%: 70%, inserts loss and isolation two indexes with decision.
6. single fiber transmission converter according to claim 1 is characterized in that described wavelength division multiplexer WDM1 is provided with the port T that receives the second wavelength light signal and send the first wavelength light signal
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7. single fiber transmission converter according to claim 1 is characterized in that the light allocation proportion scope of described coupler 3 is 10%: 90%～30%: 70%, inserts loss and isolation two indexes with decision.
8. single fiber transmission converter according to claim 1 is characterized in that the light allocation proportion scope of described coupler 4 is 10%: 90%～30%: 70%, inserts loss and isolation two indexes with decision.
9. single fiber transmission converter according to claim 1 is characterized in that described wavelength division multiplexer WDM4 is provided with the port T that receives the first wavelength light signal and send the second wavelength light signal
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101008270A CN1777065A (en) | 2005-10-28 | 2005-10-28 | Single-fiber transmission converter capable of concurrently transmitting a single-fiber double-wave system and a two-fiber system signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101008270A CN1777065A (en) | 2005-10-28 | 2005-10-28 | Single-fiber transmission converter capable of concurrently transmitting a single-fiber double-wave system and a two-fiber system signal |
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| CN1777065A true CN1777065A (en) | 2006-05-24 |
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| CNA2005101008270A Pending CN1777065A (en) | 2005-10-28 | 2005-10-28 | Single-fiber transmission converter capable of concurrently transmitting a single-fiber double-wave system and a two-fiber system signal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345413A (en) * | 2014-10-31 | 2015-02-11 | 连德伦 | Six-direction single-fiber transmission converter |
| CN105405446A (en) * | 2015-11-04 | 2016-03-16 | 中国电子科技集团公司第四十一研究所 | Photophone echo noise suppression system and method |
| CN113507316A (en) * | 2021-06-22 | 2021-10-15 | 武汉凹伟能源科技有限公司 | Single-fiber bidirectional passive optical fiber audio transmission system and optical fiber transmission network |
-
2005
- 2005-10-28 CN CNA2005101008270A patent/CN1777065A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345413A (en) * | 2014-10-31 | 2015-02-11 | 连德伦 | Six-direction single-fiber transmission converter |
| CN105405446A (en) * | 2015-11-04 | 2016-03-16 | 中国电子科技集团公司第四十一研究所 | Photophone echo noise suppression system and method |
| CN113507316A (en) * | 2021-06-22 | 2021-10-15 | 武汉凹伟能源科技有限公司 | Single-fiber bidirectional passive optical fiber audio transmission system and optical fiber transmission network |
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Open date: 20060524 |