CN2659035Y - Dual-WDM coupling single-fiber double-wave tetra direction transfer converter - Google Patents
Dual-WDM coupling single-fiber double-wave tetra direction transfer converter Download PDFInfo
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- CN2659035Y CN2659035Y CNU2003201169902U CN200320116990U CN2659035Y CN 2659035 Y CN2659035 Y CN 2659035Y CN U2003201169902 U CNU2003201169902 U CN U2003201169902U CN 200320116990 U CN200320116990 U CN 200320116990U CN 2659035 Y CN2659035 Y CN 2659035Y
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- wavelength division
- wavelength
- single fiber
- optical transceiver
- division multiplexer
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Abstract
The utility model relates to an optical communication transmission device, in particular to a dual-wavelength single-fibre four-direction transmission converter. The utility model is separately connected with an optical transmitter and a receiver for communicating with each other, a single-fibre dual-wavelength four-direction converter is separately connected with two optical transmitter and receivers by two circuits, one circuit is used as a transmitting light resource while the other circuit is as a receiving light resource, the single-fibre dual-wavelength four-direction converter is connected with each other through a single optical fibre for communication, the converter comprises two wavelength division multiplexers, each of the wavelength division multiplexers is separately connected with a light transmitting port and a light receiving port of an optical transmitter and receiver, transmitting and receiving signals of the optical transmitter and receiver firstly pass through the wavelength division multiplexer and a 10/90 coupler and then is connected with a single-fibre port. Compared with the prior art, the utility model can transmit signals in four directions through an optical fibre, does not need power supply and is small, light, better in stability and reliability while convenient for installation, use and maintenance.
Description
Technical field
The utility model has related to a kind of optical communication transmitting device, is specially adapted to dual wavelength single fiber four-way transmission converter.
Background technology
Mostly present optical fiber telecommunications system is the two fine systems of single ripple, i.e. each transmits the signal of single wavelength transmitting-receiving with an optical fiber.Along with the fast development of optical communication, the use amount of optical fiber is increasing, and is in short supply and make full use of fiber resource in order to solve some areas optical fiber, adopts a kind of demand of single fiber bi-directional transmission having become optical communication development.Solve the single fiber bi-directional transmission demand and can adopt the multiplexing method of two wave-length divisions, method that also can single wavelength transmitted in both directions.The report of existing two-way OADM module in the prior art, the OADM module of its primary structure is made up of multiplexer, optical switch display, demodulation multiplexer etc., optical fiber links to each other with demodulation multiplexer, demodulation multiplexer links to each other with optical switch by optical fiber, the optical switch display is by optical fiber and demultiplexer, the OADM module of this structure has proposed restriction to road wavelength of optical signal up and down, i.e. the light signal of the identical wavelength of both direction transmission can not be up and down road up and down simultaneously.Also form by a plurality of circulators, a plurality of erbium-doped fiber amplifier, a plurality of reflective add-drop multiplexing module in the prior art by the two-way OADM module that adopts, but its complex structure, the cost height; Adopted catoptric arrangement, made this module, be unfavorable for the raising of this module performance the inhibition ability drop of reflecting background; Support the ability drop of light wave dynamic routing.
The multiplexing coupling single fiber of dual wavelength division of the present utility model double wave four-way transmission converter is exactly to adopt dual wavelength to carry out the product of single fiber four-way transmission.Use these products not need to change the transmission equipment at communication system two ends, only need add dual wavelength single fiber four-way transmission converter, just can will carry out the four-way transmission at the signal on two optical fiber and to an optical fiber originally at the two ends of circuit.It is without power supply, and volume is little, in light weight, and steady amount is light, and stability and reliability height are installed and used easy to maintenance.Dual wavelength single fiber four-way transmission converter can provide a transparent channel to signal, is applicable to Ethernet, and PDH, SDH transmission network are carried out the transmission of single fiber four-way signal.
Summary of the invention
The purpose of this utility model is achieved by the following technical solution: the utility model is connected to the optical transceiver of mutual communication, single fiber double wave four-way transmission converter divides two-way to transmit with two optical transceivers respectively, one the tunnel is to connect to send light source, one the tunnel receives light source, transmit by simple optical fiber connection carrying out communication between the single fiber double wave four-way transmission converter, described transducer is made up of two wavelength division multiplexers, each wavelength division multiplexer is connected with receiving terminal with the light transmitting terminal of optical transceiver respectively, the transmission of optical transceiver, received signal is through wavelength division multiplexer, 10/90 coupler connects the single fiber end again.
Wavelength division multiplexer described in the utility model adopts the 1310nm/1550nmWDM wavelength division multiplexer, and in three ports of this wavelength division multiplexer, two ports are connected with the transmitting terminal or the receiving terminal of optical transceiver, and the 3rd port is connected with another wavelength division multiplexer.The 1550nm wavelength transmission signal that the 1310nm wavelength of described optical transceiver 1 sends signal and optical transceiver 2 enters the 1310nm/1550nm wavelength division multiplexer from T1 and T2; The 1550nm wavelength input signal of the 1310nm wavelength input signal of optical transceiver 1 and optical transceiver 2 enters another 1310nm/1550nm wavelength division multiplexer from R1 and R2.
The synthetic signal of WDM wavelength division multiplexer of the present utility model arrives the opposite end by 10/90 coupler, single fiber COM end through simple optical fiber, and the light signal of 1310nm wavelength and 1550nm wavelength arrives opposite end WDM wavelength division multiplexer through 10/90 coupler.Behind two WDM wavelength division multiplexers of opposite end, be divided into inputing or outputing of peer end of the connection optical transceiver.Two paths of signals is delivered to receiving terminal R1, the R2 of the 1550nm wavelength of the 1310nm wavelength of opposite end optical transceiver 1 and optical transceiver 2 respectively.
10/90 coupler external connection end described in the utility model is connected with remote another 10/90 coupler communication by the 1310nm/1550nm single fiber.
The utility model compared with prior art has signal and carry out the four-way transmission on an optical fiber, and without power supply, volume is little, in light weight, and stability and reliability height are installed and used easy to maintenance.
Description of drawings
Fig. 1 is a system configuration schematic diagram of the present utility model.
Fig. 2 is a converter structure schematic diagram of the present utility model.
Fig. 3 is a converter structure outline drawing of the present utility model.
Specific embodiment
Below in conjunction with description of drawings the utility model is described in further detail: as shown in Figure 1, the multiplexing coupling single fiber of dual wavelength division of the present utility model double wave four-way transmission converter is connected respectively to four optical transceivers of mutual communication, transducer divides two-way to transmit with two optical transceivers respectively, one the tunnel is to connect to send light source, and one the tunnel receives light source.Transmit by simple optical fiber connection carrying out communication between the transducer.As shown in Figure 1 and Figure 2, the utility model single fiber double wave four-way transmission converter is made up of single mode double window coupler and the corresponding connector of two 1310nm/1550nm/WDM wavelength division multiplexers and a 10:90.It is by five interfaces: 1310nm input port (T1), 1310nm output port (R1), 1550nm input port (T2), 1550nm delivery outlet (R2) and single fiber interface (COM), except " COM " port adopts APC type connector, all the other 4 ports all adopt FC/UPC type connector, single fiber double wave four-way transmission converter can transmit two system signals simultaneously with an optical fiber bidirectional, one of these two system adopt the 1310nm wavelength, and one is adopted the 1550nm wavelength.The transmission of system 1 (1310nm) is connected with T1, receives to be connected with R1.The transmission of system 2 (1550nm) is connected with T2, receives to be connected with R2.The signal of four direction communicates with corresponding single fiber (COM) port of opposite end with optical fiber by single from single fiber (COM) port.The transducer base plate has four fixing holes, and available M3 screw is fixed.Transducer can be installed on the fibre distribution frame, also can be positioned over other places in the machine room.
The signal of the transmission signal of system 1 (1310nm wavelength) and system 2 (1550nm wavelength) enters synthetic one road signal of WDW wavelength division multiplexer I from T1 and T2.This signal is divided into two-way after by coupler, and one tunnel useful signal arrives the opposite end by single fiber (COM) end through simple optical fiber; The useless signal in another road passes through WDM wavelength division multiplexer II, and this road signal loss is very big, and its value is not less than 55db (being decided by the coupler directivity index).Arrive the 1310nm wavelength of opposite end and the fiber-optic signal of 1550nm wavelength and be divided into two-way, the one tunnel arrives the WDM wavelength division multiplexer II of opposite end to the signal of communicating by letter useful, and the useless signal in another road then arrives the WDW wavelength division multiplexer I of opposite end.Receiving terminal R1, R2 that the two paths of signals that the effect of the signal that enters WDM wavelength division multiplexer II by wavelength division multiplexer is divided into 1310nm wavelength and 1550nm wavelength is delivered to system 1 (1310nm wavelength) and system 2 (1550nm wavelength) respectively finish the both direction transmission of two wavelength of an optical fiber.The 1310nm wavelength of same B end system 1 and system 2 and the signal of 1550nm wavelength are delivered to A respectively by the effect of two ends WDM wavelength division multiplexer and 10:90 single mode double window coupler and are held corresponding receiving terminal R1, R2, finish the transmission of two two other directions of wavelength of same optical fiber.Adopt the coupler effect of 10:90 to guarantee that signal holds T1, T2 to deliver to B end R1, R2 and signal holds T1, T2 to deliver to outside A end R1, the R2 from B from A; guarantee that also A end T1 has enough big isolation to B end T1 and A end T2 between B end T2, and this is favourable to protection two ends laser.
Fig. 3 is port arrangements of the present utility model and shape assumption diagram.
Performance index of the present utility model are as follows:
| Insert loss | 1310nm(T1→COM)＜2db(COM→R1)＜2db 1550nm(T2→COM)＜2db(COM→R2)＜2db |
| Isolation | 1310nm(COM→T1)≥50db 1310nm(COM→T2)≥50db 1550nm(COM→T1)≥50db 1550nm(COM→T2)≥50db |
| The wavelength isolation | 1310nm(COM→R2)≥40db 1550nm(COM→R1)≥40db |
| The near-end isolation | 1310nm(T1→T2)≥50db 1550nm(T2→T1)≥50db |
| Directivity | 1310nm(T1→R1)≥55db 1310nm(T1→R2)≥55db 1550nm(T2→R1)≥55db 1550nm(T2→R2)≥55db |
| Return loss | 1310nm(T1)≥40db 1550nm(T2)≥40db 1310nm(COM)≥40db 1550nm(COM)≥40db | |
| Connector | COM | FC/APC |
| T1、T2、R1、R2 | FC/UPC | |
Claims (7)
1, the multiplexing coupling single fiber of a kind of dual wavelength division double wave four-way transmission converter, be connected to the optical transceiver of mutual communication, single fiber double wave four-way transmission converter divides two-way to transmit with two optical transceivers respectively, one the tunnel is to connect to send light source, one the tunnel receives light source, transmit by simple optical fiber connection carrying out communication between the single fiber double wave four-way transmission converter, it is characterized in that described transducer is made up of two wavelength division multiplexers, each wavelength division multiplexer is connected with receiving terminal with the light transmitting terminal of optical transceiver respectively, the transmission of optical transceiver, received signal is through wavelength division multiplexer, 10/90 coupler connects the single fiber end again.
2, the multiplexing coupling single fiber of dual wavelength division according to claim 1 double wave four-way transmission converter, it is characterized in that described wavelength division multiplexer adopts the 1310nm/1550nmWDM wavelength division multiplexer, in three ports of this wavelength division multiplexer, two ports are connected with the transmitting terminal or the receiving terminal of optical transceiver, and the 3rd port is connected with another wavelength division multiplexer.
3, the multiplexing coupling single fiber of dual wavelength division according to claim 2 double wave four-way transmission converter is characterized in that the 1310nm wavelength transmission signal of described optical transceiver 1 and the 1550nm wavelength transmission signal of optical transceiver 2 enter the 1310nm/1550nm wavelength division multiplexer from T1 and T2; The 1550nm wavelength input signal of the 1310nm wavelength input signal of optical transceiver 1 and optical transceiver 2 enters another 1310nm/1550nm wavelength division multiplexer from R1 and R2.
4, the multiplexing coupling single fiber of dual wavelength division according to claim 3 double wave four-way transmission converter, it is characterized in that the synthetic signal of WDM wavelength division multiplexer arrives the opposite end by 10/90 coupler, single fiber COM end through simple optical fiber, the light signal of 1310nm wavelength and 1550nm wavelength arrives opposite end WDM wavelength division multiplexer through 10/90 coupler.
5, the multiplexing coupling single fiber of dual wavelength division according to claim 4 double wave four-way transmission converter, it is characterized in that two WDM wavelength division multiplexers of opposite end after, be divided into inputing or outputing of peer end of the connection optical transceiver.
6, the multiplexing coupling single fiber of dual wavelength division according to claim 5 double wave four-way transmission converter is characterized in that described two paths of signals delivers to receiving terminal R1, the R2 of the 1550nm wavelength of the 1310nm wavelength of opposite end optical transceiver 1 and optical transceiver 2 respectively.
7,, it is characterized in that described 10/90 coupler external connection end is connected with remote another 10/90 coupler communication by the 1310nm/1550nm single fiber according to claim 1 or the multiplexing coupling single fiber of 4 described dual wavelength divisions double wave four-way transmission converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201169902U CN2659035Y (en) | 2003-10-10 | 2003-10-10 | Dual-WDM coupling single-fiber double-wave tetra direction transfer converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201169902U CN2659035Y (en) | 2003-10-10 | 2003-10-10 | Dual-WDM coupling single-fiber double-wave tetra direction transfer converter |
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| Publication Number | Publication Date |
|---|---|
| CN2659035Y true CN2659035Y (en) | 2004-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201169902U Expired - Fee Related CN2659035Y (en) | 2003-10-10 | 2003-10-10 | Dual-WDM coupling single-fiber double-wave tetra direction transfer converter |
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Cited By (1)
| 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 |
-
2003
- 2003-10-10 CN CNU2003201169902U patent/CN2659035Y/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |