CN210297706U - Active fiber multiplier and system - Google Patents
Active fiber multiplier and system Download PDFInfo
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- CN210297706U CN210297706U CN201921080492.4U CN201921080492U CN210297706U CN 210297706 U CN210297706 U CN 210297706U CN 201921080492 U CN201921080492 U CN 201921080492U CN 210297706 U CN210297706 U CN 210297706U
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Abstract
The utility model provides an active optical fiber multiplier and system, active optical fiber multiplier includes signal receiving and dispatching unit, light wave conversion unit and wavelength division multiplexing unit. The signal receiving and transmitting unit is provided with a signal transmitting end and a signal receiving end, and the wavelength conversion unit is connected with the signal receiving end and used for converting the optical signals transmitted by the signal receiving and transmitting unit. The wavelength division multiplexing unit can combine the optical signals with the wavelengths converted by the wavelength conversion unit and transmit the optical signals to the outside by one or two paths of optical fibers; and the optical signals transmitted from the outside can be transmitted to the corresponding transmitting signal end through the demultiplexer. Therefore, optical fibers occupied by a plurality of signal receiving and transmitting units for transmitting signals simultaneously can be saved, and the wavelength management difficulty of the signal receiving and transmitting units during wavelength division multiplexing is simplified.
Description
Technical Field
The utility model relates to an optical communication technical field, in particular to active optical fiber multiplier and system.
Background
With the progress of large-scale construction of a 4G wireless broadband technology LTE and a passive optical network PON, the problem of shortage of optical fiber resources is becoming more and more obvious, wherein the most prominent scene is that when a 4G base station BBU + RRU is constructed by remote, a large number of optical fibers are occupied, especially when the remote distance is long and the fiber core of a trunk road is inevitably occupied, the whole optical cable network is further influenced greatly, and a large number of access points located in a project bottleneck area have no vacant fiber cores for access.
Compared with the rapid consumption of the fiber core of the optical cable, the laying difficulty of the pipeline optical cable is increased continuously, and the regeneration period of the optical cable resource is prolonged continuously. On one hand, the optical fiber and optical cable resources are increasingly scarce, and on the other hand, the service requirements that the number is continuously increased and the access time limit is continuously shortened are met, and each large operator faces huge challenges.
Fiber multiplication is mainly used to achieve rapid expansion of the fiber core. The application aims at the situation that the fiber core of the optical cable in the current access layer is tense, the transmission potential of the optical cable in the network is dug deeply, the use efficiency of the fiber core of the optical cable is greatly improved, the product can greatly shorten the service opening period, and the support capability of the whole service is effectively improved. In the 4G construction stage, the problem of optical fiber resource shortage between the RRU and the BBU is prominent, and the requirement for the fiber core is larger after the 5G wireless access networking topology is further sunk. The optical fiber resources between the RRU and the BBU of the existing network are very tight, and the re-laying of the optical fiber not only has large engineering quantity, but also has huge cost in part of urban areas lacking pipeline resources. In the capacity expansion of the 4G base station and the construction of the 5G base station, the active optical fiber multiplier can better utilize the optical fiber of the existing network and accelerate the service opening.
The active optical fiber multiplier combines a series of optical signals which carry information and have different wavelengths into a beam and transmits the beam along a single optical fiber; the optical fiber is converged together at a transmitting end through a multiplexer and is coupled to the same optical fiber of an optical line for transmission; at the receiving end, the optical signals at the various wavelengths are separated by a demultiplexer and then further processed by an optical receiver to recover the original signal.
There are three current schemes for fiber multiplication, the first being a passive fiber multiplier: the device has the advantages of low equipment cost, high price of a matched signal receiving and transmitting unit, high total price, strong environmental adaptability, 3dB loss increase, capability of supporting the distance video signal receiving and transmitting unit, no need of maintaining power supply, but need of planning the wavelength of the signal receiving and transmitting unit, need of replacing the signal receiving and transmitting unit of the existing antenna, and maximum support of 16 RRUs once a fault is difficult to position.
The second is an active fiber multiplier: the equipment cost is high, the price of the matched signal receiving and transmitting unit is very low, the total price is low, electricity needs to be introduced, the requirement on the environment is relatively high, but the price is lower than that of passive optical fiber multiplier equipment, the optical amplifier can be increased, and the distance is further increased; the installation is simple, need not to plan signal transceiver unit wavelength.
Third, active devices are very costly. The matched signal receiving and transmitting unit is high in price, high in total price, relatively high in requirement on environment, complex to install and free of planning the wavelength of the signal receiving and transmitting unit, and electricity needs to be led.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an active optical fiber multiplier and system to solve among the prior art active equipment very expensive, problem of passive multiplier wavelength management difficulty.
In order to solve the above technical problem, the utility model provides an active optical fiber multiplier, active optical fiber multiplier includes: the device comprises a signal transceiving unit, a wavelength conversion unit and a wavelength division multiplexing unit;
the signal receiving and transmitting unit is provided with a signal transmitting end and a signal receiving end, the signal receiving end can receive external signals and then transmit the external signals, and the signal transmitting end can transmit the signals to the outside;
the receiving signal end is connected with the wavelength conversion unit, the transmitting signal end is connected with the wavelength division multiplexing unit, and the wavelength division multiplexing unit is also connected with the wavelength conversion unit.
Optionally, the wavelength conversion unit includes a light receiving component and a light emitting component, the light receiving component is connected to the signal receiving end, and the light receiving component is further connected to the light emitting component.
Optionally, the wavelength conversion unit further includes a clock recovery circuit and a driver, the light receiving component is configured to convert the received first optical signal into a first electrical signal, the clock recovery circuit is configured to perform clock signal regeneration on the first electrical signal to obtain a second electrical signal, the driver is configured to transmit the second electrical signal to the light emitting component, and the light emitting component is configured to convert the second electrical signal into a second optical signal and transmit the second optical signal to the wavelength division multiplexing unit.
Optionally, the wavelength division multiplexing unit includes a multiplexer and a demultiplexer, the multiplexer is connected to the optical transmission assembly, the multiplexer is configured to combine the second optical signals transmitted by the optical transmission assembly into one optical signal, the demultiplexer is connected to the transmission signal end, and the demultiplexer is configured to split the received optical signals into multiple optical signals and transmit the multiple optical signals to the transmission signal end.
Optionally, the wavelength division multiplexing unit further includes a circulator, the circulator is connected to the multiplexer, the circulator is further connected to the demultiplexer, the circulator performs single-fiber bidirectional transmission on the optical signal, the optical signal transmitted by the multiplexer is transmitted to the outside through the circulator, and the circulator can receive the external optical signal and transmit the external optical signal to the demultiplexer.
Optionally, the optical signal received by the receiving signal end includes a gray light or a color light.
Optionally, the transmitting signal end has a plurality of transmitting interfaces, the receiving signal end has a plurality of receiving interfaces, and the number of the transmitting interfaces is the same as the number of the receiving interfaces.
Optionally, the number of the signal transceiver units is multiple, and the multiple signal transceiver units can receive different optical signals.
Optionally, the active fiber multiplier further includes a transmission interface, and the transmission interface is connected to the wavelength division multiplexing unit.
The utility model also provides an active optical fiber multiplication system, active optical fiber multiplication system includes a plurality of active optical fiber multiplier that connect gradually, adjacent two the active optical fiber multiplier passes through transmission interface connects.
The utility model provides an in active fiber multiplier and system, active fiber multiplier includes signal transceiver unit, wavelength conversion unit and wavelength division multiplexing unit, signal transceiver unit has transmitting signal end and received signal end, signal transceiver unit received signal end will receive first light signal transmission and arrive wavelength conversion unit, wavelength conversion unit will first light signal carries out the wavelength conversion, obtains second light signal, the rethread wavelength division multiplexing unit merges the back transmission with the second light signal. Therefore, optical fibers occupied by transmission signals can be saved, so that the product cost can be reduced, and the wavelength management difficulty can be simplified. When a plurality of the active fiber multipliers are used together, optical signals can be mutually transmitted through the transmission interfaces.
Drawings
Fig. 1 is a schematic diagram of an active fiber multiplier according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the second embodiment of the present invention when multiple signals are input into the active fiber multiplier;
wherein the content of the first and second substances,
100-active fiber multiplier 1; 110-a signal transceiving unit; 120-a wavelength conversion unit; 130-wavelength division multiplexing unit; 131-a multiplexer; 132-a demultiplexer; 133-a circulator; 140-a transmission interface; 200-active fiber multiplier 2;
300-active fiber multiplier 1; 310-a signal transceiving unit; 311-a first signal transceiving unit; 312-a second signal transceiving unit; 320-a wavelength conversion unit; 321-a first wavelength conversion unit; 322-a second wavelength conversion unit; 330-wavelength division multiplexing unit; 331-a multiplexer; 332-a demultiplexer; 333-circulator; 340 a transmission interface; 400-active fiber multiplier 2.
Detailed Description
The active fiber multiplier proposed by the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
[ EXAMPLES one ]
Referring to fig. 1, wherein fig. 1 is a schematic diagram of an active fiber multiplier according to a first embodiment of the present invention, the active fiber multiplier 100 includes a signal transceiver unit 110, a wavelength conversion unit 120, and a wavelength division multiplexing unit 130, and the signal transceiver unit has a receiving signal terminal (RX) and a transmitting signal Terminal (TX). The receiving signal terminal (RX) can receive and transmit color light signals or gray light signals. The transmission signal Terminal (TX) can transmit signals to the outside; the signal transceiver unit 110 is connected to the wavelength conversion unit 120, and the wavelength conversion unit 120 includes a light receiving assembly (ROSA) and a light emitting assembly (TOSA). Wherein, the optical transmitter assembly (TOSA) is used for receiving a first optical signal transmitted by the optical signal receiving end (RX) and converting the first optical signal into a first electrical signal. The wavelength conversion unit 120 further includes a clock recovery circuit and a driver, wherein the clock recovery circuit is configured to perform clock signal regeneration on the first electrical signal to obtain a second electrical signal. The driver is configured to transmit the second electrical signal to the optical Transmitter Optical Subassembly (TOSA), and the optical Transmitter Optical Subassembly (TOSA) is configured to convert the second electrical signal into a second optical signal having a same or different wavelength than the first optical signal and transmit the second optical signal to the wavelength division multiplexing unit 130.
As shown in fig. 1, the wavelength division multiplexing unit 130 includes a multiplexer 131 and a demultiplexer 132. The multiplexer 131 is connected to the Transmitter Optical Subassembly (TOSA), and the demultiplexer 132 is connected to the transmitting signal terminal. The multiplexer 131 is configured to combine the second optical signals transmitted by the optical Transmitter Optical Subassembly (TOSA) into one optical signal, which can save the use of optical fiber. The demultiplexer 132 is connected to the transmission signal Terminal (TX), and the demultiplexer 132 can split the received optical signal into multiple optical signals and transmit the optical signals to the transmission signal Terminal (TX). Optionally, the wavelength division multiplexing unit further includes a circulator 133, the circulator 133 is connected to the multiplexer 131, the circulator is further connected to the demultiplexer 132, and the circulator 133 can perform single-fiber bidirectional transmission on the optical signal. For example, the circulator 133 may transmit the optical signal transmitted by the multiplexer 131 to the outside, while the circulator 133 can receive the external optical signal and transmit the external optical signal to the demultiplexer 132. The active fiber multiplier further includes a transmission interface 140, and the transmission interface 140 is connected to the wavelength division multiplexing unit, and is capable of transmitting an external signal to the wavelength division multiplexing unit and transmitting an optical signal to the outside through the transmission interface 140.
Accordingly, the present embodiment also provides an active fiber multiplication system, which includes a fiber multiplier 100 and a fiber multiplier 200, and the active fiber multiplier 100 and the active fiber multiplier 200 are connected through a transmission interface 140. The active fiber multiplier 100 and the active fiber multiplier 200 are capable of transmitting optical signals to each other. The active fiber multiplier 100 can receive the signal transmitted by the optical multiplexer 200 through the transmission interface 140, and then transmit the signal to the demultiplexer 132 through the circulator 133, where the demultiplexer can split the optical signal into multiple paths to be transmitted to the transmission signal end.
[ example two ]
First, referring to fig. 2, fig. 2 shows signal transmission of multiple signal transceiving units according to an embodiment of the present invention, the active fiber multiplier 300 includes a plurality of signal transceiving units 310, where the signal transceiving units 310 include a first signal transceiving unit 311 and a second signal transceiving unit 312 respectively, and received optical signals are the same or different. For example, the optical signal received by the first signal transceiver unit 311 is a gray light, and the optical signal received by the second signal transceiver unit 312 is a color light signal.
In this embodiment, the signal transceiving units need to correspond to the wavelength conversion units one to one, the first signal transceiving unit 311 corresponds to the first wavelength conversion unit 321, the second signal transceiving unit corresponds to the second wavelength conversion unit 322, and a plurality of the signal transceiving units 310 or the wavelength conversion units 320 employ a wavelength division multiplexing circuit 330 and a transmission interface 340.
The first signal transceiving unit 311 and the second signal transceiving unit 312 both have a reception signal terminal (RX) and a transmission signal Terminal (TX). A receiving signal terminal (RX) of the transceiver unit 310 is connected to the wavelength conversion unit 320. The first wavelength conversion unit includes a light receiving module (ROSA) and a light emitting module (TOSA), and the receiving signal terminal (RX) of the first signal transceiver unit 311 is connected to the light receiving module (ROSA) of the first wavelength conversion unit 321. The first wavelength conversion unit 321 further includes a driver, and after receiving a signal, a light receiving assembly (ROSA) of the first wavelength conversion unit 321 transfers the signal to a light emitting assembly (TOSA) of the wavelength conversion unit 321 through the driver. In this embodiment, the signal transceiving unit may provide a clock recovery circuit at the wavelength conversion unit according to the type of the optical signal.
A receiving signal terminal (RX) of the second signal transceiving unit 312 is connected to the second wavelength conversion unit 322, and the second wavelength conversion unit 322 includes a Receiver Optical Subassembly (ROSA) and a Transmitter Optical Subassembly (TOSA). The optical receiver assembly (ROSA) is configured to receive a first optical signal transmitted by the receiver signal terminal (RX) and convert the first optical signal into a first electrical signal. The wavelength conversion unit further comprises a clock recovery circuit and a driver, wherein the clock recovery circuit is used for carrying out clock signal regeneration on the first electric signal to obtain a second electric signal. The driver is configured to transmit the second electrical signal to the optical Transmitter Optical Subassembly (TOSA), and the optical Transmitter Optical Subassembly (TOSA) is configured to convert the second electrical signal into a second optical signal having a same or different wavelength as the first optical signal and transmit the second optical signal to the wavelength division multiplexing unit 330.
The wavelength division multiplexing unit 330 in the second embodiment includes a multiplexer 331, a demultiplexer 332, and a circulator 333. As shown in the wavelength division multiplexing unit 330 in fig. 2, the multiplexer 331 is connected to the optical Transmitter Optical Subassembly (TOSA), the demultiplexer 332 is connected to the transmitting signal end, and the multiplexer 331 is configured to combine the second optical signals transmitted by the TOSA into one optical signal, which can save the use of optical fibers. The circulator 333 is connected to the multiplexer 331, and the circulator is further connected to the demultiplexer 332, and the circulator 333 can perform single-fiber bidirectional transmission on the optical signal, thereby facilitating management of the optical signal.
The embodiment further provides an active optical fiber multiplication system, the active optical fiber multiplication system includes an optical fiber multiplier 300 and an optical fiber multiplier 400 connected by a transmission interface 340, and the active optical fiber multiplier 300 and the active optical fiber multiplier 400 can transmit and receive optical signals to each other.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (10)
1. An active fiber multiplier, comprising: the device comprises a signal transceiving unit, a wavelength conversion unit and a wavelength division multiplexing unit;
the signal receiving and transmitting unit is provided with a signal transmitting end and a signal receiving end, the signal receiving end can receive external signals and then transmit the external signals, and the signal transmitting end can transmit the signals to the outside;
the receiving signal end is connected with the wavelength conversion unit, the transmitting signal end is connected with the wavelength division multiplexing unit, and the wavelength division multiplexing unit is also connected with the wavelength conversion unit.
2. The active fiber multiplier of claim 1, wherein the wavelength conversion unit includes a light receiving component and a light emitting component, the light receiving component being connected to the receive signal terminal, the light receiving component also being connected to the light emitting component.
3. The active fiber multiplier of claim 2, wherein the wavelength conversion unit further comprises a clock recovery circuit and a driver, the light receiving component is configured to convert the received first optical signal into a first electrical signal, the clock recovery circuit is configured to perform clock signal regeneration on the first electrical signal to obtain a second electrical signal, the driver is configured to transmit the second electrical signal to the light emitting component, and the light emitting component is configured to convert the second electrical signal into a second optical signal and transmit the second optical signal to the wavelength division multiplexing unit.
4. The active fiber multiplier of claim 3, wherein the wavelength division multiplexing unit comprises a multiplexer and a demultiplexer, the multiplexer is connected to the optical transmission module, the multiplexer is configured to combine the second optical signals transmitted by the optical transmission module into one optical signal, the demultiplexer is connected to the transmission signal terminal, and the demultiplexer is configured to split a received optical signal into multiple optical signals and transmit the optical signals to the transmission signal terminal.
5. The active fiber multiplier of claim 4, wherein the wavelength division multiplexing unit further comprises a circulator, the circulator is connected to the multiplexer, the circulator is further connected to the demultiplexer, the circulator is capable of single-fiber bidirectional transmission of optical signals, the optical signals transmitted by the multiplexer are transmitted to the outside through the circulator, and the circulator is capable of receiving external optical signals and transmitting the external optical signals to the demultiplexer.
6. The active fiber multiplier of claim 1, in which the optical signal received by the receive signal end comprises gray light or colored light.
7. The active fiber multiplier of claim 1, in which the transmit signal end has a plurality of transmit interfaces and the receive signal end has a plurality of receive interfaces, the number of transmit interfaces being the same as the number of receive interfaces.
8. The active fiber multiplier of claim 1, wherein the number of signal transceiving units is plural, the plural signal transceiving units being capable of receiving different optical signals.
9. The active fiber multiplier of claim 1, further comprising a transmission interface, the transmission interface connected with the wavelength division multiplexing unit.
10. An active fiber multiplication system comprising a plurality of sequentially connected active fiber multipliers of any of claims 1-9, adjacent two of said active fiber multipliers being connected by said transmission interface.
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| CN201921080492.4U CN210297706U (en) | 2019-07-10 | 2019-07-10 | Active fiber multiplier and system |
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| CN201921080492.4U CN210297706U (en) | 2019-07-10 | 2019-07-10 | Active fiber multiplier and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247706A (en) * | 2019-07-10 | 2019-09-17 | 易锐光电科技(安徽)有限公司 | Active Optical Fiber multiplier and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110247706A (en) * | 2019-07-10 | 2019-09-17 | 易锐光电科技(安徽)有限公司 | Active Optical Fiber multiplier and system |
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