CN112448785B - Communication transmission method based on 100G DWDM CFP2 optical module - Google Patents
Communication transmission method based on 100G DWDM CFP2 optical module Download PDFInfo
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- CN112448785B CN112448785B CN201910813084.3A CN201910813084A CN112448785B CN 112448785 B CN112448785 B CN 112448785B CN 201910813084 A CN201910813084 A CN 201910813084A CN 112448785 B CN112448785 B CN 112448785B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0215—Architecture aspects
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Abstract
The invention discloses a communication transmission method based on 100G DWDM CFP2 optical modules, which relates to the field of communication and comprises a first optical module, a second optical module, a first dense wavelength division multiplexer, an optical amplifier, an optical dispersion compensator, a second dense wavelength division multiplexer and a third optical module, wherein the output end of the first optical module is connected with the input end of the second optical module, the output end of the second optical module is connected with the input end of the first dense wavelength division multiplexer, the output end of the first dense wavelength division multiplexer is connected with the input end of the optical amplifier, the output end of the optical amplifier is connected with the input end of the optical dispersion compensator, and the output end of the optical dispersion compensator is connected with the input end of the second dense wavelength division multiplexer. The scheme utilizes the existing 100G low-cost scheme optical module and the passive optical device to build a set of transmission scheme which is far away from the 100G optical module and has lower cost relative to high cost. Thereby transmitting the same amount of information and at a greater distance at a lower cost.
Description
Technical Field
The invention relates to the field of communication, in particular to a communication transmission method based on a 100G DWDM CFP2 optical module.
Background
With the increasing demand for data traffic, the cost of data traffic transmission is increasingly required to be reduced. In order to reduce the transmission cost of traffic, on the one hand, by increasing the data transmission rate and, on the other hand, by increasing the unrepeatered transmission distance. Optical modules are an important segment of optical communication systems and are also a ring for reducing information transmission costs. Transmitting data via different transmission modes using lower cost optical modules that have grown in popularity is also a solution to reduce transmission costs.
The technology of the 100G optical module on the market is relatively mature, the main stream of the 100G single-mode optical module comprises 100G CFP2, 100G QSFP28 LR4, 100G QSFP28 PSM4 and the like, the transmission distance can reach 10km at present, the PIN scheme of the 100G CFP2 can reach 10km, and the APD scheme of the 100CFP2 can reach 40km. But the 40km 100g CFP2 cost is much higher relative to the QSFP28 LR4 and 10km 100g CFP2. The use of lower cost 100G optical modules to transmit long distances is a necessary way to reduce costs.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a communication transmission method based on a 100G DWDM CFP2 optical module.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the communication transmission method based on 100G DWDM CFP2 optical module comprises a first optical module, a second optical module, a first dense wavelength division multiplexer, an optical amplifier, an optical dispersion compensator, a second dense wavelength division multiplexer and a third optical module, wherein the output end of the first optical module is connected with the input end of the second optical module, the output end of the second optical module is connected with the input end of the first dense wavelength division multiplexer, the output end of the first dense wavelength division multiplexer is connected with the input end of the optical amplifier, the output end of the optical amplifier is connected with the input end of the optical dispersion compensator, the output end of the optical dispersion compensator is connected with the input end of the second dense wavelength division multiplexer, the output end of the second dense wavelength division multiplexer is connected with the input end of the third optical module, and the types of the first dense wavelength division multiplexer and the second dense wavelength division multiplexer are the same.
Preferably, the second optical module is a 100g CFP2 optical module, and the laser of the second optical module adopts a DWDM laser, and the receiving end of the second optical module adopts a PIN with low cost.
Preferably, the first optical module is configured to send the modulated light of the 25G rate of the LAN-WDM wavelength of the channel to the receiving end of the second optical module.
Preferably, the second optical module is configured to convert the received four paths of light into electrical signals, and reconvert the four paths of electrical signals generated by the PIN into light of a path DWDM wavelength channel through an electrical loop, and send the light to the first dense wavelength division multiplexer.
Preferably, the first dense wavelength division multiplexer is configured to combine the received light of the wavelength channels of the DWDM and transmit the combined light through a single mode fiber with a length of 80km, and the combined light first passes through the optical amplifier and then enters the optical dispersion compensator to be divided into four DWDM lights, and finally enters the receiving end of the third optical module.
Preferably, the first optical module is a 100g QSFP28 LR4 type optical module.
Preferably, the first and second WDM optical devices are WDM optical devices, and the third optical module is a 100g QSFP28 PSM4 optical module.
Preferably, the optical amplifier is an OA optical amplifier, and the optical dispersion compensator is an 80KM DCM optical dispersion compensator.
The existing 100G low-cost scheme optical module and the passive optical device are utilized to build a set of transmission scheme which is relatively low in cost compared with the high-cost remote 100G optical module. Thereby transmitting the same amount of information and at a greater distance at a lower cost.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Reference numerals in the drawings: 1 first optical module, 2 second optical module, 3 first dense wavelength division multiplexer, 4 optical amplifier, 5 optical dispersion compensator, 6 second dense wavelength division multiplexer, 7 third optical module.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1, the communication transmission method based on 100g DWDM CFP2 optical modules includes a first optical module 1, a second optical module 2, a first dense wavelength division multiplexer 3, an optical amplifier 4, an optical dispersion compensator 5, a second dense wavelength division multiplexer 6, and a third optical module 7, wherein an output end of the first optical module 1 is connected to an input end of the second optical module 2, an output end of the second optical module 2 is connected to an input end of the first dense wavelength division multiplexer 3, an output end of the first dense wavelength division multiplexer 3 is connected to an input end of the optical amplifier 4, an output end of the optical amplifier 4 is connected to an input end of the optical dispersion compensator 5, an output end of the optical dispersion compensator 5 is connected to an input end of the second dense wavelength division multiplexer 6, an output end of the second dense wavelength division multiplexer 6 is connected to an input end of the third optical module 7, and the first dense wavelength division multiplexer 3 and the second dense wavelength division multiplexer 6 are the same.
The second optical module 2 is a 100G CFP2 optical module, the laser of the second optical module 2 adopts a DWDM laser, the receiving end of the second optical module 2 adopts a low-cost PIN, the first optical module 1 is used for transmitting modulated light with a 4-channel LAN-WDM wavelength of 25G rate to the receiving end of the second optical module 2, the second optical module 2 is used for converting received four paths of light into electric signals and reconverting the four paths of electric signals generated by the PIN into light with a 4-channel DWDM wavelength channel through an electric loop, the light is transmitted to the first dense wavelength multiplexer 3, the first dense wavelength multiplexer 3 is used for multiplexing the received light with the 4-channel DWDM wavelength channel and transmitting the light through a single mode fiber with the length of 80km, the light is sequentially transmitted into the light dispersion compensator 5 through the optical amplifier 4 and then is divided into four paths of DWDM light, and finally the light enters the receiving end of the third optical module 7, and thus 80km long-distance transmission with the speed of 100G is completed. The first optical module 1 is a 100g QSFP28 LR4 optical module, the first and second dense wavelength division multiplexers 3 and 6 are WDM dense wavelength division multiplexers, the third optical module 7 is a 100g QSFP28 PSM4 optical module, the optical amplifier 4 is an OA optical amplifier, and the optical dispersion compensator 5 is an 80KM DCM optical dispersion compensator.
In the invention, after the second optical module 2 receives the four paths of LAN-WDM light sent by the first optical module 1, the converted electric signals are transmitted to a laser driving chip of the second optical module 2 through an electric loop, and then the four paths of DWDM lasers of the second optical module 2 convert the electric signals into four paths of dense wave modulation light. Since the transmission loss of 1550nm band light on a single mode optical fiber is nearly 80% less than that of 1310nm band light, 1550nm band light can be transmitted farther for the same emission intensity light, but since 1550nm light is dispersed at the time of transmission, a dispersion compensator 5 is required at the time of reception. Meanwhile, since the wave combining and wave dividing device and the dispersion compensating passive devices bring about optical loss, an optical amplifier 4 is needed to be added on the transmitting side to compensate for optical attenuation, and the receiving end of the third optical module 7 supports the light in the wavelength range of 1260 nm-1620 nm, so that the third optical module 7 can normally receive the DWDM light, and thus, the receiving can be completed.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The communication transmission method based on the 100G DWDM CFP2 optical module is characterized by comprising a first optical module (1), a second optical module (2), a first dense wavelength division multiplexer (3), an optical amplifier (4), an optical dispersion compensator (5), a second dense wavelength division multiplexer (6) and a third optical module (7), wherein the output end of the first optical module (1) is connected with the input end of the second optical module (2), the output end of the second optical module (2) is connected with the input end of the first dense wavelength division multiplexer (3), the output end of the first dense wavelength division multiplexer (3) is connected with the input end of the optical amplifier (4), the output end of the optical amplifier (4) is connected with the input end of the optical dispersion compensator (5), the output end of the optical dispersion compensator (5) is connected with the input end of the second dense wavelength division multiplexer (6), and the output end of the second dense wavelength division multiplexer (6) is connected with the input end of the third optical module (7), and the first dense wavelength division multiplexer (6) is the same in model;
the first optical module (1) is used for sending the modulated light with the wavelength 25G rate of the 4-channel LAN-WDM to the receiving end of the second optical module (2);
the second optical module (2) is used for converting the received four paths of light into electric signals, converting the four paths of electric signals generated by PIN into light of 4 paths of DWDM wavelength channels through an electric loop, and transmitting the light into the first dense wavelength division multiplexer (3);
the first dense wavelength division multiplexer (3) is used for combining the received light of the 4 paths of DWDM wavelength channels, transmitting the light through a single mode fiber with the length of 80km, and dividing the light into four paths of DWDM light after passing through the optical amplifier (4) and then entering the optical dispersion compensator (5), and finally entering the receiving end of the third optical module (7).
2. The communication transmission method based on 100g DWDM CFP2 optical module according to claim 1, wherein the second optical module (2) is a 100g CFP2 optical module, a DWDM laser is adopted as a laser of the second optical module (2), and a PIN with low cost is adopted as a receiving end of the second optical module (2).
3. A communication transmission method based on 100g DWDM CFP2 optical module according to any of the claims 1 to 2, characterized in that the first optical module (1) is a 100g QSFP28 LR4 optical module.
4. A communication transmission method based on 100g DWDM CFP2 optical module according to any one of claims 1 to 2, wherein the first and second dense wavelength division multiplexers (3, 6) are WDM dense wavelength division multiplexers, and the third optical module (7) is a 100g QSFP28 PSM4 optical module.
5. A communication transmission method based on 100g DWDM CFP2 optical module according to any one of claims 1 to 2, wherein the optical amplifier (4) is an OA optical amplifier and the optical dispersion compensator (5) is an 80KM DCM optical dispersion compensator.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458759A (en) * | 2002-05-15 | 2003-11-26 | 华为技术有限公司 | Light signal modulation method, transmission method and system in wavelnth division mulplexing light transmission system |
| CN106788964A (en) * | 2017-02-17 | 2017-05-31 | 西南大学 | A kind of chaotic secret communication apparatus and method based on WRC FPLD and WDM PON networkings |
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| US9722722B2 (en) * | 2014-09-19 | 2017-08-01 | Neophotonics Corporation | Dense wavelength division multiplexing and single-wavelength transmission systems |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458759A (en) * | 2002-05-15 | 2003-11-26 | 华为技术有限公司 | Light signal modulation method, transmission method and system in wavelnth division mulplexing light transmission system |
| CN106788964A (en) * | 2017-02-17 | 2017-05-31 | 西南大学 | A kind of chaotic secret communication apparatus and method based on WRC FPLD and WDM PON networkings |
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