CN218301403U - Wavelength selection device for wavelength division multiplexing network and wavelength division multiplexing network system - Google Patents
Wavelength selection device for wavelength division multiplexing network and wavelength division multiplexing network system Download PDFInfo
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- CN218301403U CN218301403U CN202222215767.9U CN202222215767U CN218301403U CN 218301403 U CN218301403 U CN 218301403U CN 202222215767 U CN202222215767 U CN 202222215767U CN 218301403 U CN218301403 U CN 218301403U
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- wavelength selection
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Abstract
The utility model provides a wavelength selection device and wavelength division multiplexing network system for wavelength division multiplexing network, this wavelength selection device includes wavelength selection module, light signal amplifier and signal control unit, light signal amplifier respectively with wavelength selection module's common port, signal control unit connection; the signal control unit is connected with the input end and the output end of the optical signal amplifier and is used for inputting amplified signals to the optical signal amplifier after detecting the signals of the input end and the output end, and the optical signal amplifier outputs signals matched with the amplified signals. The utility model discloses an add and subtract multiplexing of reconfigurable light under the low light condition has enlarged the optical signal power scope that wavelength division multiplexing is suitable for, has promoted the development of wavelength division multiplexing technique.
Description
Technical Field
The utility model relates to an optical communication technical field especially relates to a wavelength selection device and wavelength division multiplexing network system for wavelength division multiplexing network.
Background
The passive wavelength division multiplexing technology for the 5G optical carrier network is mainly used for connecting a base station and a machine room so as to expand the transmission capacity of optical fibers and improve the transmission rate. The wavelength division multiplexing technology can realize the transmission of a single optical fiber to a plurality of wavelength signals, which can improve the transmission capacity of the optical fiber by times. In addition, wavelength division multiplexing has the advantages of easy realization and low cost, and is the most effective method for expanding the communication capacity of the optical fiber at present. Therefore, it is widely used in 5G networks.
However, the existing wavelength selection module using the wavelength division multiplexing technology has strict requirements on the intensity of optical signals, and can only perform add-drop multiplexing on optical signals in a fixed range, thereby reducing the adaptive range of wavelength division multiplexing.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's not enough, the utility model provides a wavelength selection device and wavelength division multiplexing system for wavelength division multiplexing network sets up the optical signal amplifier and the signal control unit who are connected with the wavelength selection module, through signal control unit control optical signal amplifier amplification light signal to realize the add and subtract multiplexing of reconfigurable light under the low light condition, enlarged the optical signal power scope that wavelength division multiplexing is suitable for, promoted the development of wavelength division multiplexing technique.
In order to solve the above problem, the utility model discloses a technical scheme do: a wavelength selection device for a wavelength division multiplexing network comprises a wavelength selection module, an optical signal amplifier and a signal control unit, wherein the optical signal amplifier is respectively connected with a public end of the wavelength selection module and the signal control unit; the signal control unit is connected with the input end and the output end of the optical signal amplifier and is used for inputting an amplified signal to the optical signal amplifier after detecting the signals of the input end and the output end, and the optical signal amplifier outputs a signal matched with the amplified signal.
Further, the wavelength selection module includes a multiplexing module and a demultiplexing module, the common port includes a first common port and a second common port, the demultiplexing module is connected to the optical signal amplifier through the first common port, and the multiplexing module is connected to the optical signal amplifier through the second common port.
Further, the optical signal amplifier comprises a first optical fiber amplifier and a second optical fiber amplifier, the first optical fiber amplifier is connected with the first common end, and the second optical fiber amplifier is connected with the second common end.
Furthermore, the signal control unit comprises an optical splitter, the optical splitter is connected with the input end and the output end of the optical signal amplifier, and the signal control unit splits optical signals from the input end and the output end through the optical splitter.
Further, the signal control unit further comprises a photodetector, and the photodetector is connected with the optical splitter to convert the optical signal output by the optical splitter into an electrical signal.
Further, the signal control unit further comprises a controller, and the controller is connected with the photoelectric detector and the optical signal amplifier.
Further, the controller is also in communication connection with the wavelength selection module through an I2C bus or an RS232 bus.
Further, the wavelength selection device also comprises a power supply module, and the power supply module is connected with the wavelength selection module to supply power to the wavelength selection module.
Based on the same inventive concept, the present invention further provides a wavelength division multiplexing network system, which includes a first signal transmission end, a second signal transmission end and the wavelength selection device for wavelength division multiplexing network, wherein the first signal transmission end and the second signal transmission end are respectively connected to the wavelength selection device, and signal transmission between the first signal transmission end and the second signal transmission end is realized through the wavelength selection device.
Compared with the prior art, the beneficial effects of the utility model reside in that: the optical signal amplifier and the signal control unit are connected with the wavelength selection module, and the signal control unit controls the optical signal amplifier to amplify optical signals, so that addition and subtraction multiplexing of reconfigurable light under the condition of weak light is realized, the power range of optical signals applicable to wavelength division multiplexing is expanded, and the development of a wavelength division multiplexing technology is promoted.
Drawings
Fig. 1 is a structural diagram of an embodiment of a wavelength selection device for a wdm network according to the present invention;
fig. 2 is a block diagram of another embodiment of a wavelength selection device for a wdm network according to the present invention;
fig. 3 is a schematic diagram illustrating a connection between a wavelength selection module and an embodiment of a single chip microcomputer in the wavelength selection device for the wdm network according to the present invention;
fig. 4 is a structural diagram of an embodiment of the wdm network system of the present invention.
In the figure: WSS1, a demultiplexing module; WSS2, a multiplexing module; aCO, a first common terminal; bCO, a second public terminal; an EDFA1 and a first optical fiber amplifier; an EDFA2 and a second fiber amplifier.
Detailed Description
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It should be noted that the various embodiments of the present disclosure, described and illustrated in the figures herein generally, may be combined with each other without conflict, and that the structural components or functional modules therein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the disclosure, provided in the accompanying drawings, is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The terminology used in the description of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1-3, fig. 1 is a structural diagram of an embodiment of a wavelength selection device for a wavelength division multiplexing network according to the present invention; fig. 2 is a block diagram of another embodiment of a wavelength selection device for a wdm network according to the present invention; fig. 3 is a schematic diagram illustrating a connection between a wavelength selection module and a single chip in a wavelength selection device for a wavelength division multiplexing network according to an embodiment of the present invention. In fig. 2, aP1 to aP9 and bP1 to bP9 denote pins of the wavelength selection module. The wavelength selection device for wavelength division multiplexing network of the present invention is described with reference to fig. 1 to 3.
In this embodiment, the wavelength selection device includes a wavelength selection module, an optical signal amplifier, and a signal control unit, where the optical signal amplifier is connected to a common port of the wavelength selection module and the signal control unit respectively; the signal control unit is connected with the input end and the output end of the optical signal amplifier and is used for inputting amplified signals to the optical signal amplifier after detecting the signals of the input end and the output end, and the optical signal amplifier outputs signals matched with the amplified signals. The optical signal amplifier is used for amplifying an optical signal, inputting the amplified optical signal to the wavelength selection switch for multiplexing or receiving an optical signal output by the wavelength selection switch after demultiplexing, and amplifying the optical signal.
In one embodiment, the Wavelength selection module is a Wavelength Selection Switch (WSS), the Wavelength selection Switch adopts a mobile Twin 1x9 Wavelength Selective Switch module, and can be configured as a 50G grid 96 channel or a 100G grid 48 channel using a serial port communication configuration, and the Wavelength selection Switch supports any port Wavelength uplink and downlink.
In this embodiment, the wavelength selection module includes a multiplexing module WSS2 and a demultiplexing module WSS1, the common port includes a first common port aCO and a second common port bCO, the demultiplexing module WSS1 is connected to the optical signal amplifier through the first common port aCO, and the multiplexing module WSS2 is connected to the optical signal amplifier through the second common port bCO. The optical signal amplifier outputs optical signals to the demultiplexing module WSS1 in the wavelength selection module through the first common terminal aCO, and receives the optical signals output by the multiplexing module WSS2 in the wavelength selection module through the second common terminal bCO. Therefore, the multiplexing module WSS2 is used for realizing the addition multiplexing of the dynamic reconfigurable light, and the demultiplexing module WSS1 is used for realizing the subtraction multiplexing of the dynamic reconfigurable light.
In a preferred embodiment, the optical signal amplifier comprises a first fiber amplifier EDFA1 and a second fiber amplifier EDFA2, the first fiber amplifier EDFA1 is connected to the first common terminal aCO, and the second fiber amplifier EDFA2 is connected to the second common terminal bCO, wherein the first fiber amplifier EDFA1 and the second fiber amplifier EDFA2 are the same and are used for amplifying optical signals. The signal control unit correspondingly sends an amplification signal according to the intensity values of the optical signals at the two ends of the first optical fiber amplifier EDFA1 and the second optical fiber amplifier EDFA2, the amplification signal is pump current, and the first optical fiber amplifier EDFA1 and the second optical fiber amplifier EDFA2 determine the amplification times according to the pump current.
In this embodiment, the amplification factors generated by the first fiber amplifier EDFA1 and the second fiber amplifier EDFA2 receiving the amplified signals may be the same or different, and the specific size is determined according to the intensity of the light signals collected at the two ends of the first fiber amplifier EDFA1 and the second fiber amplifier EDFA 2. The intensity of the optical signal output by the optical signal amplifier is equal to the input optical signal plus the amplification factor multiplied by the input optical signal. And dynamic weak light automatic compensation is realized through the adjusting action of the signal control unit and the optical signal amplifier.
In this embodiment, the signal control unit includes an optical splitter, the optical splitter is connected to the input end and the output end of the optical signal amplifier, and the signal control unit splits the optical signal from the input end and the output end through the optical splitter.
Specifically, the optical splitter is a TAP optical splitter, 2% of optical signals are split from optical signals input to the optical signal amplifier by the TAP optical splitter, and the signal control unit performs signal detection based on the 2% of optical signals.
Further, the signal control unit further comprises a photoelectric detector, and the photoelectric detector is connected with the optical splitter to convert the optical signal output by the optical splitter into an electric signal.
In a specific embodiment, the photodetector is a LOG114 chip of TI corporation, and the chip has the advantages of wide detection dynamic range, good linearity, and easy calculation because the output signal is already converted into logarithm.
In this embodiment, the signal control unit further includes a controller, and the controller is connected to the photodetector and the optical signal amplifier. The controller is also in communication connection with the wavelength selection module through an I2C bus or an RS232 bus.
In a specific embodiment, the controller is a single chip, the single chip is in communication connection with the wavelength selective switch, accesses internal information of the wavelength selective switch through a UART protocol, and inputs the HWRST signal to the wavelength selective switch to reset the wavelength selective switch when a fault is accessed. In addition, in order to enable the wavelength selection switch to support any up-down link of any port wavelength, an internal register of the wavelength selection switch is arranged through the singlechip.
In this embodiment, the wavelength selection device further includes a power module, and the power module is connected to the wavelength selection module to supply power to the wavelength selection module.
In a specific embodiment, the power module provides two voltages VCC1, VCC2 to the wavelength selective switch, the power module voltage is 5V, and the current is 20A.
Has the advantages that: the utility model discloses a wavelength selection device for wavelength division multiplexing network sets up the optical signal amplifier and the signal control unit who is connected with the wavelength selection module, through signal control unit control optical signal amplifier amplification optical signal to realize the addition and subtraction multiplexing of reconfigurable light under the low light condition, enlarged the optical signal power scope that wavelength division multiplexing is suitable for, promoted the development of wavelength division multiplexing technique.
Based on the same inventive concept, the present invention further provides a wdm network system, please refer to fig. 4, fig. 4 is a structure diagram of an embodiment of the wdm network system of the present invention, which is illustrated with reference to fig. 4.
In this embodiment, the wdm network system includes a first signaling end, a second signaling end, and the wavelength selection device for the wdm network as described in the above embodiments, where the first signaling end and the second signaling end are respectively connected to the wavelength selection device, and signal transmission between the first signaling end and the second signaling end is implemented by the wavelength selection device. The first signal transmission end and the second signal transmission end can be a signal sending end or a signal receiving end, and the specific types can be set according to actual requirements.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A wavelength selection device for a wavelength division multiplexing network is characterized by comprising a wavelength selection module, an optical signal amplifier and a signal control unit, wherein the optical signal amplifier is respectively connected with a public end of the wavelength selection module and the signal control unit;
the signal control unit is connected with the input end and the output end of the optical signal amplifier and is used for inputting amplified signals to the optical signal amplifier after detecting the signals of the input end and the output end, and the optical signal amplifier outputs signals matched with the amplified signals.
2. The wavelength selective device for a wavelength division multiplexing network of claim 1, wherein the wavelength selective module comprises a multiplexing module and a demultiplexing module, the common port comprises a first common port and a second common port, the demultiplexing module is connected to the optical signal amplifier through the first common port, and the multiplexing module is connected to the optical signal amplifier through the second common port.
3. The wavelength selective device for a wavelength division multiplexing network of claim 2 wherein the optical signal amplifier comprises a first optical fiber amplifier and a second optical fiber amplifier, the first optical fiber amplifier being connected to the first common port and the second optical fiber amplifier being connected to the second common port.
4. The wavelength selective device for a wavelength division multiplexing network as claimed in claim 1, wherein said signal control unit comprises an optical splitter, said optical splitter being connected to an input terminal and an output terminal of said optical signal amplifier, said signal control unit splitting an optical signal from said input terminal and said output terminal through said optical splitter.
5. The wavelength selective device for a wavelength division multiplexing network of claim 4, wherein the signal control unit further comprises a photodetector connected to the optical splitter to convert an optical signal output from the optical splitter into an electrical signal.
6. The wavelength selective device for a wavelength division multiplexing network of claim 5, wherein the signal control unit further comprises a controller, the controller being connected to the photodetector and the optical signal amplifier.
7. The wavelength selection device for a wavelength division multiplexing network of claim 6 wherein the controller is further communicatively coupled to the wavelength selection module via an I2C bus or an RS232 bus.
8. The wavelength selection device for a wavelength division multiplexing network of claim 1 wherein the wavelength selection device further comprises a power module coupled to the wavelength selection module to provide power to the wavelength selection module.
9. A wdm network system comprising a first signal transmission port, a second signal transmission port and the wavelength selection apparatus according to any one of claims 1-8, wherein the first signal transmission port and the second signal transmission port are respectively connected to the wavelength selection apparatus, and the wavelength selection apparatus is used for implementing signal transmission between the first signal transmission port and the second signal transmission port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222215767.9U CN218301403U (en) | 2022-08-22 | 2022-08-22 | Wavelength selection device for wavelength division multiplexing network and wavelength division multiplexing network system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222215767.9U CN218301403U (en) | 2022-08-22 | 2022-08-22 | Wavelength selection device for wavelength division multiplexing network and wavelength division multiplexing network system |
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| CN218301403U true CN218301403U (en) | 2023-01-13 |
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| CN202222215767.9U Active CN218301403U (en) | 2022-08-22 | 2022-08-22 | Wavelength selection device for wavelength division multiplexing network and wavelength division multiplexing network system |
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