CN210780803U - Portable super-long distance optical communication direct connection digital communication equipment - Google Patents
Portable super-long distance optical communication direct connection digital communication equipment Download PDFInfo
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- CN210780803U CN210780803U CN201922446883.XU CN201922446883U CN210780803U CN 210780803 U CN210780803 U CN 210780803U CN 201922446883 U CN201922446883 U CN 201922446883U CN 210780803 U CN210780803 U CN 210780803U
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Abstract
The utility model relates to an optical communication technical field, concretely relates to portable overlength is apart from optical communication and is directly linked digital communication equipment. Portable overlength is apart from optical communication direct connection digital communication equipment includes: a switch comprising an input and an output; the input end of the downlink is connected with the output end of the switch, and the output end of the downlink is the transmitting end of the portable ultra-long distance optical communication direct digital communication equipment; the system comprises a downlink input end, a downlink output end and a coding module and a power amplifier module which are sequentially connected in series; an output end of the uplink is connected with an input end of the switch, and the input end of the uplink is a receiving end of the portable ultra-long distance optical communication direct digital communication equipment; the system comprises a small signal amplifier module, a dispersion compensation module and a decoding module which are sequentially connected in series from the input end of the uplink to the output end of the uplink.
Description
Technical Field
The utility model relates to an optical communication technical field, concretely relates to portable overlength is apart from optical communication and is directly linked digital communication equipment.
Background
The switch is a high-speed network transmission relay device, and due to the transmission advantages of the optical fibers, the speed is high, the anti-interference capability is high, and the like, the information between the switches can be transmitted more stably and more quickly.
At present, the main way to realize interconnection between switches is realized by an optical transceiver module. The information transmission channel used by the operator is mostly short-distance transmission, and relay equipment is not needed in the transmission limit range of the optical module. The transmission distance of a general communication optical module is related to the emitted light power, generally about 2km, while the transmission distance of a short-distance optical module is 15-40 km, and the long distance can reach 80 km. This distance is far from satisfactory for long-distance scenarios such as interconnection between many urban areas, interconnection between switches in remote areas, and the like. In the electric power communication system, the information transmission distance is mostly long-distance transmission, and the unrepeatered ultra-long-distance transmission can be realized only by means of equipment such as an amplifier, error correction, dispersion compensation and the like. Currently, long-distance transmission between exchanges is generally realized by building a relay station. However, in areas with complex terrain and low smoke, stations are difficult to establish, maintenance is difficult, and power supply conditions are poor, so that few stations or no stations (long relay distance) are considered when the optical cable passes through the optical cable. This requires longer distance fiber transmission schemes to achieve connectivity between the switches.
Interconnection between optical switches is very difficult due to limitations of attenuation, dispersion accumulation, nonlinear effects (excessive power) and the like of signal transmission in the optical fiber. The short-distance interconnection of the optical fiber switches cannot meet the special requirements of special areas, and meanwhile, frequent photoelectric and electro-optical conversion among the short-distance switches not only increases the time required by optical fiber communication, but also reduces the stability and the safety of the optical fiber communication.
Disclosure of Invention
In order to solve the not enough of existence among the prior art, the utility model provides a portable overlength is apart from optical communication straight-through data communication equipment directly links communication, can realize the data communication equipment overlength distance such as switch router directly links communication through this equipment.
According to the utility model provides a technical scheme, a portable overlength is apart from optical communication straight-through digital equipment, include:
a switch comprising an input and an output;
the input end of the downlink is connected with the output end of the switch, and the output end of the downlink is the transmitting end of the portable ultra-long distance optical communication direct digital communication equipment;
the system comprises a downlink input end, a downlink output end and a coding module and a power amplifier module which are sequentially connected in series;
an output end of the uplink is connected with an input end of the switch, and the input end of the uplink is a receiving end of the portable ultra-long distance optical communication direct digital communication equipment;
the system comprises a small signal amplifier module, a dispersion compensation module and a decoding module which are sequentially connected in series from the input end of the uplink to the output end of the uplink.
Optionally, the small-signal amplifier module includes:
the small-signal amplification device comprises a Raman amplifier used for primarily amplifying small signals and a preset amplifier used for further amplifying the small signals, wherein the output power of the preset amplifier is 0-5 dBm.
Optionally, the power amplifier module may amplify signals with different input powers, and output a fixed power, where the fixed power is in a range of 10dBm to 24 dBm.
Optionally, the coding gain range of the coding module is 8.5 dB-10 dB.
Optionally, the switch uses a two-layer ethernet and an optical network access switch.
Optionally, the switch further includes:
an Ethernet power port, the Ethernet power port satisfying the million, gigabit and terabyte adaptation;
a line side port that supports giga rates.
Optionally, the method further includes: equipment frame, switch, downlink and uplink install in the equipment frame, just downlink and uplink are in the symmetry sets up in the equipment frame.
From the foregoing, it can be seen that the utility model provides a portable overlength is apart from optical communication straight-through digital equipment directly possesses following advantage compared with prior art: in the end-to-end service transmission optical transmission network, each pair of portable ultra-long distance optical communication direct digital communication equipment of the optical fiber switch is connected with any two points in the optical transmission network, and signals are always in an optical layer before reaching a destination, so that the transmission efficiency is higher, the network structure is further simplified, and the smooth evolution towards an intelligent optical network is facilitated. Meanwhile, the long-distance unrepeatered optical transmission scheme realized by applying the portable digital communication equipment frame has stronger stability and operation and maintenance functions. Due to the fact that the use of active devices is reduced, power consumption and space occupation of the long-distance optical transmission system are reduced, stability of the system is improved, and fault hidden dangers are reduced. The portable digital communication equipment is arranged in the machine rooms of the two switches, so that the distance between the two switches of the digital communication equipment can be increased to more than 400km without arranging a relay station, and the communication cost is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the utility model discloses a portable overlength distance optical communication directly links the block diagram of digital communication equipment.
Fig. 2 is a connection diagram of the present invention in use.
100. The system comprises a switch, 200 downlink, 210 encoding module, 220 power amplifier module, 300 transmitting end, 400 uplink, 410 small signal amplifier module, 411 Raman amplifier, 412 preset amplifier, 420 dispersion compensation module, 430 decoding module and 500 receiving end.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As an embodiment of the present utility model, refer to fig. 1, provide a portable overlength apart from optical communication direct digital communication equipment, portable overlength apart from optical communication direct digital communication equipment includes:
a switch 100, said switch 100 comprising an input and an output;
an input end of the downlink 200 is connected to an output end of the switch 100, and an output end of the downlink 200 is a transmitting end 300 of the portable ultra-long distance optical communication direct digital communication device;
the device comprises an encoding module 210 and a power amplifier module 220 which are sequentially connected in series from the input end of the downlink 200 to the output end of the downlink 200;
an output end of the uplink 400 is connected to an input end of the switch 100, and an input end of the uplink 400 is a receiving end 500 of the portable long-haul optical communication direct digital communication device;
from the input end of the uplink 400 to the output end of the uplink 400, a small signal amplifier module 410, a dispersion compensation module 420 and a decoding module 430 are sequentially connected in series.
In this embodiment, in the end-to-end service-transmitting optical transmission network, each pair of portable extra-long distance optical communication direct digital communication devices of the optical fiber switch 100 connects any two points in the optical transmission network, and before reaching a destination, a signal is always in an optical layer, which makes the transmission efficiency higher, simplifies the network structure, and facilitates the smooth evolution to the intelligent optical network. Meanwhile, the long-distance unrepeatered optical transmission scheme realized by applying the portable digital communication equipment frame has stronger stability and operation and maintenance functions. Due to the fact that the use of active devices is reduced, power consumption and space occupation of the long-distance optical transmission system are reduced, stability of the system is improved, and fault hidden dangers are reduced. By arranging the portable digital communication device in the machine rooms of the two switches 100, the distance between the two switches 100 of the digital communication device can be increased to more than 400km without arranging a relay station, and the communication cost is greatly reduced.
The switch 100 is accessed to the switch by adopting a two-layer Ethernet and an optical network, and the input end of the switch 100 is suitable for various rates with transmission rate less than or equal to ten tera, single-wave and multi-wave signals and signals of various wave bands; the output end of the switch 100 is suitable for various transmission rates less than or equal to ten-thousand megabits, single-wave and multi-wave signals, and signals of various wave bands.
The switch 100 further comprises:
the Ethernet electric port meets the requirements of hundred megabytes, gigabytes and terabytes self-adaptation and is used for accessing the client side service;
the line side optical port supports a ten-gigabit rate, the maximum supporting distance of the optical port is 80km, and direct connection communication without any relay for over 400km can be realized by matching with an ultra-long distance line side; the optical interface supports multiplexing and demultiplexing of client side small particle services.
The encoding module 210 uses super-strong error correction encoding equipment, and can encode the signal at a rate of 2.5Gb/s into 2.67Gb/s, or encode the signal at a rate of 9.95Gb/s into 10.7Gb/s, or encode the signal at a rate of 10.3Gb/s into 11.3 Gb/s. The coding gain range is 8.5dB to 10 dB.
The power amplifier module 220 can amplify signals with different input powers and output a fixed power, wherein the fixed power ranges from 10dBm to 24 dBm.
The small-signal amplifier module 410 includes: the amplifier comprises a Raman amplifier 411 for preliminarily amplifying small signals and a preset amplifier 412 for further amplifying the small signals, wherein the output power of the preset amplifier 412 is 0 dBm-5 dBm. The raman amplifier 411 can amplify small signals in the transmission fiber, and the gain is greater than 20 dB; noise is less than 0 dB; the switch gain of the forward Raman amplifier 411 is 6-10 dB, and the noise is lower than 0 dB.
The decoding module 430 can decode the 2.67Gb/s rate signal into 2.5Gb/s using a super error correction decoding device. Or the signal with the rate of 10.7Gb/s is decoded into 9.95Gb/s, or the signal with the rate of 11.3Gb/s is decoded into 10.3 Gb/s.
In use, referring to fig. 2, a pair of the portable extra-long distance optical communication direct digital communication devices are installed at two ends of an optical transmission path, a downlink 200 of the optical communication direct digital communication device at one end of the optical transmission path is connected with an uplink 400 of the optical communication direct digital communication device at the other end of the optical transmission path through a transmission optical fiber; the uplink 400 of the optical communication direct communication device located at one end of the optical transmission path is connected to the downlink 200 of the optical communication direct communication device located at the other end of the optical transmission path through a transmission optical fiber.
In an optical communication direct digital communication device, a downlink signal is sent from an output end of a switch 100, and signal light (applicable to various rates of 10GE and below) is encoded through super-strong error correction encoding equipment. The input signal is then amplified to above 17dBm by the power amplifier module 220. After a few hundred kilometers of transmission fiber, the signal becomes very weak.
At this time, the small signal firstly enters a raman amplifier 411 of another optical communication direct digital communication equipment small signal amplifier module 410 for amplification, and the distributed amplification characteristic of the raman amplifier 411 enables the signal to be amplified in transmission. Since the incident signal is relatively small, in the raman amplifier 411, a raman gain exceeding 20dB can be obtained. The signal is then further amplified in a preset amplifier 412, the purpose of which is to obtain a further large gain to compensate for the power loss of the dispersion compensating fiber behind it. Next, after the signal passes through the dispersion compensation module 420, most of the accumulated dispersion is compensated, and the signal enters the decoding module 430, and the encoded signal is decoded and enters the input end of the switch 100 of another optical communication direct communication apparatus.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (7)
1. The utility model provides a portable overlength is apart from optical communication direct digital communication equipment which characterized in that includes:
a switch (100), the switch (100) comprising an input and an output;
the input end of the downlink (200) is connected with the output end of the switch (100), and the output end of the downlink (200) is the transmitting end (300) of the portable ultra-long distance optical communication direct communication digital communication equipment;
the device comprises a coding module (210) and a power amplifier module (220) which are sequentially connected in series from the input end of the downlink (200) to the output end of the downlink (200);
an output end of the uplink (400) is connected with an input end of the switch (100), and an input end of the uplink (400) is a receiving end (500) of the portable ultra-long distance optical communication direct communication digital communication equipment;
the system comprises a small signal amplifier module (410), a dispersion compensation module (420) and a decoding module (430) which are sequentially connected in series from the input end of the uplink (400) to the output end of the uplink (400).
2. The portable very long haul optical communication direct digital communication device of claim 1, wherein the small signal amplifier module (410) comprises:
the small-signal amplification circuit comprises a Raman amplifier (411) used for preliminarily amplifying small signals and a preset amplifier (412) used for further amplifying the small signals, wherein the output power of the preset amplifier (412) is 0-5 dBm.
3. The portable extra-long haul optical communication direct digital communication device of claim 1, wherein the power amplifier module (220) is capable of amplifying signals having different input powers and outputting a fixed power in a range of 10dBm to 24 dBm.
4. The portable very long haul optical communication direct digital communication device of claim 1, wherein the coding gain range of the coding module (210) is 8.5dB to 10 dB.
5. The portable very long haul optical communication direct digital communication device of claim 1, wherein the switch (100) employs a two layer ethernet and optical network access switch.
6. The portable very long haul optical communication direct digital communication device of claim 1, wherein the switch (100) further comprises:
an Ethernet power port, the Ethernet power port satisfying the million, gigabit and terabyte adaptation;
a line side port that supports giga rates.
7. The portable very long range optical communication direct digital communication device of claim 1, further comprising: equipment frame, switch (100), downlink (200) and uplink (400) are installed in the equipment frame, just downlink (200) and uplink (400) are in the symmetry sets up in the equipment frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922446883.XU CN210780803U (en) | 2019-12-30 | 2019-12-30 | Portable super-long distance optical communication direct connection digital communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922446883.XU CN210780803U (en) | 2019-12-30 | 2019-12-30 | Portable super-long distance optical communication direct connection digital communication equipment |
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| Publication Number | Publication Date |
|---|---|
| CN210780803U true CN210780803U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922446883.XU Active CN210780803U (en) | 2019-12-30 | 2019-12-30 | Portable super-long distance optical communication direct connection digital communication equipment |
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| CN (1) | CN210780803U (en) |
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Address after: 214028 plot 93-c, science and Technology Industrial Park, Xinwu District, Wuxi City, Jiangsu Province Patentee after: Wuxi dekeli Optoelectronic Technology Co.,Ltd. Patentee after: CHINA SOUTHERN POWER GRID ENERGY DEVELOPMENT RESEARCH INSTITUTE Co.,Ltd. Patentee after: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Address before: 214028 plot 93-c, science and Technology Industrial Park, Xinwu District, Wuxi City, Jiangsu Province Patentee before: WUXI TACLINK OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Patentee before: CHINA SOUTHERN POWER GRID ENERGY DEVELOPMENT RESEARCH INSTITUTE Co.,Ltd. Patentee before: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group |