CN105634649A - Colorless reconfigurable optical add-drop multiplexer and optical signal receiving method - Google Patents
Colorless reconfigurable optical add-drop multiplexer and optical signal receiving method Download PDFInfo
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Abstract
The embodiment of the invention provides a colorless reconfigurable optical add-drop multiplexer and an optical signal receiving method. The optical add-drop multiplexer comprises a convergence WSS and a cascading coupling optical splitter, wherein an input port of the convergence WSS is connected with an input port of the cascading coupling optical splitter. The convergence WSS is used for receiving optical signals, which have different wavelengths and are transmitted by WSSs connected with a plurality of output ports in different directions, through a plurality of output ports, and enabling the received optical signals to be transmitted to the input port. The cascading coupling optical splitter is used for distributing the optical signals received by the input port to an output port connected with receiving equipment according to a preset power distribution rule. The optical add-drop multiplexer simplifies the deployment mode, and improves the equipment reliability. The invention relates to the technical field of communication.
Description
Technical field
The present invention relates to communication technical field, particularly relate to the method for reseptance of colourless ROADM and optical signal.
Background technology
In recent years, bandwidth demand explosive growth brings immense pressure to optical transport network, it is necessary to adopt new optic communication modulation format to improve transfer rate. At crossover node, light intersects and electricity intersection is all widely adopted, to improve networking and the flexible dispatching ability of Optical Transmission Network OTN. Electricity intersection possesses the function of optical regeneration, but the capacity that electricity intersects is relatively small, and energy consumption is higher. Light intersection (ROADM, Reconfigurableopticaladddropmultiplexer (ROADM)) framework is suitable for the scheduling of the other services of large granularities of wavelength level.
Fig. 1 is the light intersection ROADM node operation principle schematic diagram when upper and lower business in prior art. as shown in Figure 1. (direction A from different directions, direction B, direction C, with direction D) optical signal (being characterized the different wave length of the optical signal from different directions in Fig. 1 by the color lump of different gray scales) of the different wave length that transmits selects switch (WSS by first wave length, WavelengthSelectiveSwitch) converge, oneth WSS may be used for the optical signal of the variant wavelength of some input ports is converged to an output port, the input port of the output port of the oneth WSS and the 2nd WSS is docked, again owing to the port dimension of WSS is 20 to the maximum, and channel wave long number is generally 80, port dimension more than WSS, therefore several the 2nd WSS cascades are needed when upper and lower business, here the 2nd WSS of cascade is constituted for two-stage the 2nd WSS,
The first order the 2nd WSS is configured, the first order the 2nd WSS is made to be easily separated by the light of the second level the 2nd WSS wavelength being respectively necessary for, and correspondence is sent to the second level the 2nd WSS respectively, the second level the 2nd WSS can output port respectively with receive different wave length optical signal optical conversion element (OTU, OpticalTransformUnit) it is connected, and by the second level the 2nd WSS is configured, the optical signal of the variant wavelength of the 2nd WSS input port is assigned to the output port being connected to the OTU receiving corresponding wavelength optical signal, each OTU is made to receive the optical signal of self corresponding wavelength.
Visible, prior art requires over by the mode of multiple WSS cascades to realize colourless ROADM (colourlessROADM), not only dispose complexity, and when a WSS in the WSS of cascade breaks down, by affecting the normal operation of this WSS next stage WSS connected, cause the poor reliability of the WSS of cascade.
Summary of the invention
Embodiments provide colourless ROADM and optical signal method of reseptance, dispose problem complicated, poor reliability in order to solve colourless ROADM in prior art.
Based on the problems referred to above, the colourless ROADM that the embodiment of the present invention provides, including: converge wavelength-selective switches WSS and cascade coupled beam splitter,
Wherein, the described input port converging WSS is connected with the input port of described cascade coupled beam splitter;
Described convergence WSS, the optical signal of the different wave length that the WSS for being received the different directions that the plurality of output port connects respectively by multiple output ports is sent, and the optical signal of reception is sent to the input port of self;
Described cascade coupled beam splitter, for distributing to the output port being connected to reception equipment of self by the optical signal received by the input port of self according to predetermined power allocation rule.
A kind of optical signal method of reseptance that the embodiment of the present invention provides, including:
The optical signal of the different wave length that the WSS converging wavelength-selective switches WSS reception different directions in colourless ROADM sends;
The optical signal of the described different wave length received is sent to cascade coupled beam splitter by the described WSS of convergence;
The optical signal of reception is distributed to the reception equipment self connected by described cascade coupled beam splitter according to predetermined power allocation rule so that the optical signal that the optical signal medium wavelength receiving equipment interconnection receipts receives electricity bandwidth range corresponding with self processes.
The beneficial effect of the embodiment of the present invention includes:
The colourless ROADM of embodiment of the present invention offer and the method for reseptance of optical signal, including: converging WSS and cascade coupled beam splitter, wherein, the input port converging WSS is connected with the input port of cascade coupled beam splitter; Converge WSS, the optical signal of the different wave length that the WSS for being received the different directions that multiple output ports connect respectively by multiple output ports is sent, and the optical signal of reception is sent to the input port of self; Cascade coupled beam splitter, for distributing to the output port being connected to reception equipment of self by the optical signal received by the input port of self according to predetermined power allocation rule. The colourless ROADM that the embodiment of the present invention provides, cascade coupled beam splitter is used to replace multi-stage cascade WSS of the prior art, the optical signal of the different wave length of self-aggregation WSS is transmitted to reception equipment in the future, compared with prior art simplify deployment way, improve the reliability of equipment.
Accompanying drawing explanation
The light intersection ROADM node operation principle schematic diagram when upper and lower business that Fig. 1 provides for background of invention;
The colourless reconfigurable optical add-drop multiplexer architecture schematic diagram that Fig. 2 provides for the embodiment of the present invention;
The colourless reconfigurable optical add-drop multiplexer architecture schematic diagram that Fig. 3 provides for the embodiment of the present invention 1;
The colourless reconfigurable optical add-drop multiplexer architecture schematic diagram that Fig. 4 provides for the embodiment of the present invention 2;
The flow chart of a kind of optical signal method of reseptance that Fig. 5 provides for the embodiment of the present invention;
The flow chart of a kind of optical signal transmitting method that Fig. 6 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiments provide the method for reseptance of colourless ROADM and optical signal, below in conjunction with Figure of description, the preferred embodiments of the present invention are illustrated, it is to be understood that, preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention. And when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
The embodiment of the present invention provides colourless ROADM, as in figure 2 it is shown, include: converge WSS201 and cascade coupled beam splitter 202,
Wherein, the input port converging WSS201 is connected with the input port of cascade coupled beam splitter 202;
Converge WSS201, the optical signal of the different wave length that the WSS203 for being received the different directions that multiple output ports connect respectively by multiple output ports is sent, and the optical signal of reception is sent to the input port of self;
Cascade coupled beam splitter 202, for distributing to the output port being connected to reception equipment 204 of self by the optical signal received by the input port of self according to predetermined power allocation rule.
Further, in the embodiment of the present invention, in the flow process receiving data (namely descending in operation flow), different directions is for direction A, direction B, direction C and direction D four direction. converge WSS201 by multiple output ports receive respectively each output port connect different directions WSS203 send different wave length optical signal (as shown in Figure 2, by characterizing the different wave length of optical signal without the color lump of gray scale), the optical signal of variant wavelength converges to the input port converging WSS201, and the optical signal of the different wave length of convergence is sent to cascade coupled beam splitter 202 by the input port of cascade coupled beam splitter 202, the optical signal of the different wave length of convergence can be divided into the signal that the output port number being connected to reception equipment 204 with self is identical according to predetermined power allocation rule by cascade coupled beam splitter 202, and it is sent respectively to be connected to the output port of reception equipment 204, to receive the output port that equipment 204 connected by self the receiving signal that this output port is assigned with.
Further, in the embodiment of the present invention, the optical signal of different wave length need not be separated by cascade coupled beam splitter 202, and be only that the optical signal of different wave length by the convergence of reception divides from power, predetermined power allocation rule can be mean allocation rule etc., therefore, the signal being assigned to the output port being connected to reception equipment 204 of cascade coupled beam splitter 202 includes the optical signal of the different wave length converged, again due to electric limited bandwidth that reception equipment 204 usually receives, that is, reception equipment 204 can process the optical signal with self electricity bandwidth corresponding wavelength, therefore, reception equipment 204 only processes the optical signal of the corresponding wavelength that self can process in the optical signal of the different wave length of convergence, so, in the embodiment of the present invention, the optical signal of reception equipment 204 corresponding wavelength need not be separated and be sent respectively to receive the reception equipment 204 of corresponding wavelength optical signal by cascade coupled beam splitter 202, and directly the optical signal of the different wave length of convergence is distributed to each output port being connected to reception equipment 204, optical signal prosessing is carried out by reception equipment 204 self, compared with prior art, deployment complexity is low, reliability is high.
Further, converge WSS201, it is additionally operable to the wavelength of the optical signal corresponding for WSS of the different directions connected respectively according to multiple output ports, the optical signal of the different wave length received by the input port of self is separated, and is sent respectively to receive the WSS203 of corresponding wavelength optical signal by multiple output ports;
Cascade coupled beam splitter 202, is additionally operable to be sent to the optical signal from the output port of self received the input port of self.
Further, in the embodiment of the present invention, in the flow process sending data (namely going up in operation flow), the optical signal that the reception equipment 204 of reception sends is sent to the input port of self by cascade coupled beam splitter 202, converge WSS201 and received the optical signal of the different wave length that each reception equipment 204 sends by the input port being connected with the input port of cascade coupled beam splitter 202, the wavelength of the optical signal corresponding for WSS of the different directions that the multiple output ports according to self connect respectively, the optical signal of the different wave length received by the input port of self is separated, and the WSS203 of corresponding wavelength optical signal it is sent respectively to receive by multiple output ports.
Further, cascade coupled beam splitter 202 can be one-level cascade coupled beam splitter, it is also possible to for the cascade coupled beam splitter 202 of multi-stage cascade. When cascade coupled beam splitter 202 is multi-stage cascade coupling splitter, the number of the cascade coupled beam splitter 202 that the cascade coupled beam splitter 202 for having subordinate's cascade coupled beam splitter 202 can connect according to this self next stage of cascade coupled beam splitter 202, according to predetermined power allocation rule, the optical signal of the different wave length of convergence is divided into this number part signal from power, and is sent respectively to the cascade coupled beam splitter 202 that self next stage connects; For most subordinate cascade coupled beam splitter 202, the number receiving equipment 204 that can connect according to this cascade coupled beam splitter 202, according to predetermined power allocation rule, the optical signal of the different wave length of convergence is divided into this number part signal from power, and is sent respectively to each reception equipment 204 self connected.
Further, receiving equipment 204 can be OTU equipment.
Below in conjunction with accompanying drawing, with specific embodiment, method provided by the invention and relevant device are described in detail.
Embodiment 1:
In the embodiment of the present invention 1, on the basis of the colourless ROADM shown in Fig. 2, it is provided that a kind of colourless ROADM, as shown in Figure 3, in the colourless ROADM that embodiment 1 provides, also include: tunable optic filter 301, specific as follows:
Wherein, the output port of cascade coupled beam splitter 202 is connected by tunable optic filter 301 is corresponding with receiving equipment 204;
Cascade coupled beam splitter 202, specifically for distributing to the output port being connected to tunable optic filter 301 of self by the optical signal received by the input port of self according to predetermined power allocation rule;
Tunable optic filter 301, specifically for receiving the optical signal of the output port from the cascade coupled beam splitter 202 self connected, and from the optical signal received, filter out the optical signal of reception equipment 204 corresponding wavelength being connected with self, and it is sent to the reception equipment 204 of self connection.
Further, in the present embodiment, in the flow process receiving data (namely descending in operation flow), converge WSS201 and the optical signal of the different wave length of convergence is sent to cascade coupled beam splitter 202 by the input port of cascade coupled beam splitter 202, the optical signal of the different wave length of the convergence of reception can be divided by cascade coupled beam splitter 202 from power, and it is sent respectively to be connected to the output port of tunable optic filter 301, tunable optic filter 301 receives the optical signal of the different wave length of convergence, the optical signal of reception equipment 204 corresponding wavelength self connected is filtered out from the optical signal of the different wave length of the convergence received, and it is sent to the reception equipment 204 self connected, although reception equipment 204 can process the optical signal with self electricity bandwidth corresponding wavelength, but the selection of corresponding wavelength optical signal is relatively coarse, carry out processing the cost that may pay certain receptivity to the optical signal of the different wave length of convergence either directly through reception equipment 204, and in the present embodiment, the optical signal of the tunable optic filter 301 that each reception equipment 204 was connected by self before the receiving optical signal different wave length to converging is filtered, relatively accurately correspondence can be received the filtered optical signal of equipment 204 corresponding wavelength out, the tunable optic filter 301 that reception equipment 204 directly connects from self is made to receive the optical signal of the comparatively accurately wavelength that self can process, improve receptivity, and suppress the crosstalk of interchannel.
Further, cascade coupled beam splitter 202, specifically for being sent to the input port of self by the optical signal of the tunable optic filter 301 connected from this output port received by the output port of self;
Tunable optic filter 301, specifically for being sent to the output port of the cascade coupled beam splitter 202 self connected by the optical signal that the reception equipment 204 self connected received sends.
Further, in the present embodiment, in the flow process sending data (namely going up in operation flow), tunable optic filter 301 receives the optical signal that the reception equipment 204 self connected sends, and the optical signal of reception is sent to the output port of cascade coupled beam splitter 202, the optical signal of the different wave length received by output port is sent to the input port of self by cascade coupled beam splitter 202, so, converge WSS201 and can receive the optical signal of this different wave length, and carry out next step distribution.
Further, multiple tunable optic filters 301 may be constructed tunable optic filter array 302.
Embodiment 2:
In the embodiment of the present invention 2, on the basis of the colourless ROADM shown in Fig. 2, provide a kind of colourless ROADM, as shown in Figure 4, in the colourless ROADM that embodiment 2 provides, also include: there is the light splitting WSS401 of default capabilities, specific as follows:
Wherein, the output port of cascade coupled beam splitter 202 is connected by light splitting WSS401 is corresponding with receiving equipment 204;
Cascade coupled beam splitter 202, specifically for distributing to the output port being connected to light splitting WSS401 of self by the optical signal received by the input port of self according to predetermined power allocation rule;
Light splitting WSS401, specifically for being received the optical signal of the output port of the cascade coupled beam splitter 202 that this input port connects by the input port of self, and filter out the optical signal of reception equipment 204 corresponding wavelength that the output port with self is connected from the optical signal received, and correspondence is sent to the reception equipment 204 of self connection.
Further, in the present embodiment, in the flow process receiving data (namely descending in operation flow), converge WSS201 and the optical signal of the different wave length of convergence is sent to cascade coupled beam splitter 202 by the input port of cascade coupled beam splitter 202, the optical signal of the different wave length of the convergence of reception can be divided by cascade coupled beam splitter 202 from power, and it is sent respectively to be connected to the output port of light splitting WSS401, light splitting WSS401 receives the optical signal of the different wave length of convergence, the optical signal of reception equipment 204 corresponding wavelength self connected is filtered out from the optical signal of the different wave length of the convergence received, and it is sent to the reception equipment 204 self connected, each light splitting WSS401 can connect multiple reception equipment 204, when light splitting WSS401 is connected to multiple reception equipment 204, by the filtered optical signal of wavelength corresponding respectively for the multiple reception equipment 204 self connected out, and it is sent respectively to the reception equipment 204 of correspondence. although reception equipment 204 can process the optical signal with self electricity bandwidth corresponding wavelength, but the selection of corresponding wavelength optical signal is relatively coarse, carry out processing the cost that may pay certain receptivity to the optical signal of the different wave length of convergence either directly through reception equipment 204, and in the present embodiment, the optical signal of the light splitting WSS401 that each reception equipment 204 was connected by self before the receiving optical signal different wave length to converging is filtered, relatively accurately correspondence can be received the filtered optical signal of equipment 204 corresponding wavelength out, reception equipment 204 is made directly to receive the optical signal of the comparatively accurately wavelength that self can process from the output port of the light splitting WSS401 of self connection, improve receptivity, and suppress the crosstalk of interchannel.
Further, light splitting WSS401 in the embodiment of the present invention can be the light splitting WSS401 with default capabilities, such as: can be low performance, low cost, the WSS of low port dimension, light splitting WSS401 in the embodiment of the present invention, the function having may be configured to identify the wavelength that the connected reception equipment 204 of self output port processes optical signal, and reception equipment is separated and be sent respectively to the optical signal of reception equipment 204 corresponding wavelength in the optical signal of the different wave length of the convergence of input port reception, and the light splitting WSS401 in the embodiment of the present invention need not have high-performance, also without having high port dimension. cost can be saved.
Further, cascade coupled beam splitter 202, specifically for being sent to the input port of self by the optical signal of the light splitting WSS401 connected from this output port received by the output port of self;
Light splitting WSS401, specifically for receiving the optical signal that equipment 204 sends that receives being connected with the output port of self, and is sent to the output port of the cascade coupled beam splitter 202 that this input port connects by the input port of self by the optical signal of reception.
Further, in the present embodiment, in the flow process sending data (namely going up in operation flow), light splitting WSS401 receives the optical signal receiving equipment 204 transmission that self output port connects, and by input port, the optical signal of reception is sent to the output port of cascade coupled beam splitter 202, the optical signal of the different wave length received by output port is sent to the input port of self by cascade coupled beam splitter 202, so, converge WSS201 and can receive the optical signal of this different wave length, and carry out next step distribution.
Further, based on the colourless ROADM that the embodiment of the present invention provides, the embodiment of the present invention additionally provides a kind of optical signal method of reseptance, as it is shown in figure 5, comprise the steps:
The optical signal of the different wave length that the WSS converging wavelength-selective switches WSS reception different directions in S501, colourless ROADM sends.
The optical signal of the different wave length of reception is sent to cascade coupled beam splitter by S502, convergence WSS.
The optical signal of reception is distributed to the reception equipment self connected by S503, cascade coupled beam splitter according to predetermined power allocation rule so that the optical signal that the optical signal medium wavelength receiving equipment interconnection receipts receives electricity bandwidth range corresponding with self processes.
Further, when colourless ROADM includes tunable optic filter, above-mentioned steps S503 can perform be:
The optical signal of reception is distributed to the tunable optic filter self connected by step one, cascade coupled beam splitter according to predetermined power allocation rule.
The optical signal that step 2, tunable optic filter receive from step one filters out the optical signal receiving equipment corresponding wavelength being connected with self.
The optical signal receiving equipment corresponding wavelength being connected with self filtered out in step 2 is sent to this reception equipment by step 3, tunable optic filter.
Further, when colourless ROADM includes light splitting WSS, above-mentioned steps S503 can perform be:
The optical signal of reception is distributed to the light splitting WSS self connected by step one, cascade coupled beam splitter according to predetermined power allocation rule.
The optical signal that step 2, light splitting WSS receive from step one filters out the optical signal receiving equipment corresponding wavelength being connected with self output port.
The optical signal receiving equipment corresponding wavelength being connected with self output port filtered out in step 2 is sent to this reception equipment by step 3, light splitting WSS.
Further, based on the colourless ROADM that the embodiment of the present invention provides, the embodiment of the present invention additionally provides a kind of optical signal transmitting method, as shown in Figure 6, comprises the steps:
The optical signal that reception equipment sends is sent to convergence wavelength-selective switches WSS by the cascade coupled beam splitter in S601, colourless ROADM.
The wavelength of the optical signal corresponding for WSS of the different directions that S602, convergence WSS connect according to self, separates the optical signal of different wave length in the optical signal received in S601.
The optical signal of different wave length isolated in S602 is sent respectively to the WSS of the different directions corresponding respectively with different wave length by S603, convergence WSS.
Further, when colourless ROADM includes tunable optic filter, above-mentioned steps S601 can perform be:
The optical signal that the reception equipment of reception sends is sent to cascade coupled beam splitter by the tunable optic filter in step one, colourless ROADM.
The optical signal from tunable optic filter received in step one is sent to convergence WSS by step 2, cascade coupled beam splitter.
Further, when colourless ROADM includes light splitting WSS, above-mentioned steps S601 can perform be:
The optical signal that the reception equipment of reception sends is sent to cascade coupled beam splitter by the light splitting WSS in step one, colourless ROADM.
The optical signal from light splitting WSS received in step one is sent to described convergence WSS by step 2, cascade coupled beam splitter.
The colourless ROADM of embodiment of the present invention offer and the method for reseptance of optical signal, including: converging WSS and cascade coupled beam splitter, wherein, the input port converging WSS is connected with the input port of cascade coupled beam splitter; Converge WSS, the optical signal of the different wave length that the WSS for being received the different directions that multiple output ports connect respectively by multiple output ports is sent, and the optical signal of reception is sent to the input port of self; Cascade coupled beam splitter, for distributing to the output port being connected to reception equipment of self by the optical signal received by the input port of self according to predetermined power allocation rule. The colourless ROADM that the embodiment of the present invention provides, cascade coupled beam splitter is used to replace multi-stage cascade WSS of the prior art, the optical signal of the different wave length of self-aggregation WSS is transmitted to reception equipment in the future, compared with prior art simplify deployment way, improve the reliability of equipment.
Through the above description of the embodiments, those skilled in the art is it can be understood that can realize by hardware to the embodiment of the present invention, it is also possible to the mode adding necessary general hardware platform by software realizes. Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) performs the method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module or flow process in accompanying drawing are not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in the device in embodiment can describe according to embodiment to carry out being distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment. The module of above-described embodiment can merge into a module, it is also possible to is further split into multiple submodule.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art. So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a colourless ROADM, it is characterised in that including: converge wavelength-selective switches WSS and cascade coupled beam splitter,
Wherein, the described input port converging WSS is connected with the input port of described cascade coupled beam splitter;
Described convergence WSS, the optical signal of the different wave length that the WSS for being received the different directions that the plurality of output port connects respectively by multiple output ports is sent, and the optical signal of reception is sent to the input port of self;
Described cascade coupled beam splitter, for distributing to the output port being connected to reception equipment of self by the optical signal received by the input port of self according to predetermined power allocation rule.
2. colourless ROADM as claimed in claim 1, it is characterized in that, described convergence WSS, it is additionally operable to the wavelength of the optical signal corresponding for WSS of the different directions connected respectively according to the plurality of output port, the optical signal of the different wave length received by the input port of self is separated, and is sent respectively to receive the WSS of corresponding wavelength optical signal by the plurality of output port;
Described cascade coupled beam splitter, is additionally operable to be sent to the optical signal from the output port of self received the input port of self.
3. colourless ROADM as claimed in claim 1, it is characterised in that also include: tunable optic filter;
Wherein, the output port of described cascade coupled beam splitter is connected by described tunable optic filter is corresponding with described reception equipment;
Described cascade coupled beam splitter, specifically for distributing to the output port being connected to tunable optic filter of self by the optical signal received by the input port of self according to predetermined power allocation rule;
Described tunable optic filter, specifically for receiving the optical signal of the output port from the cascade coupled beam splitter self connected, and from the optical signal received, filter out the optical signal receiving equipment corresponding wavelength being connected with self, and it is sent to the reception equipment self connected.
4. colourless ROADM as claimed in claim 2, it is characterised in that also include: tunable optic filter;
Wherein, the output port of described cascade coupled beam splitter is connected by described tunable optic filter is corresponding with described reception equipment;
Described cascade coupled beam splitter, specifically for being sent to the input port of self by the optical signal of the tunable optic filter connected from this output port received by the output port of self;
Described tunable optic filter, specifically for being sent to the output port of the described cascade coupled beam splitter self connected by the optical signal that the reception equipment self connected received sends.
5. colourless ROADM as claimed in claim 1, it is characterised in that also include: there is the light splitting WSS of default capabilities;
Wherein, the output port of described cascade coupled beam splitter is connected by described light splitting WSS is corresponding with described reception equipment;
Described cascade coupled beam splitter, specifically for distributing to the output port being connected to light splitting WSS of self by the optical signal received by the input port of self according to predetermined power allocation rule;
Described light splitting WSS, specifically for being received the optical signal of the output port of the cascade coupled beam splitter that this input port connects by the input port of self, and filter out the optical signal receiving equipment corresponding wavelength that the output port with self is connected from the optical signal received, and correspondence is sent to the reception equipment self connected.
6. colourless ROADM as claimed in claim 2, it is characterised in that also include: there is the light splitting WSS of default capabilities;
Wherein, the output port of described cascade coupled beam splitter is connected by described light splitting WSS is corresponding with described reception equipment;
Described cascade coupled beam splitter, specifically for being sent to the input port of self by the optical signal of the light splitting WSS connected from this output port received by the output port of self;
Described light splitting WSS, specifically for receiving the optical signal that equipment sends that receives being connected with the output port of self, and is sent to the output port of the described cascade coupled beam splitter that this input port connects by the input port of self by the optical signal of reception.
7. the colourless ROADM as described in any one of claim 1-6, it is characterised in that described cascade coupled beam splitter is one-level cascade coupled beam splitter, or the cascade coupled beam splitter of multi-stage cascade.
8. the method for reseptance of an optical signal, it is characterised in that including:
The optical signal of the different wave length that the WSS converging wavelength-selective switches WSS reception different directions in colourless ROADM sends;
The optical signal of the described different wave length received is sent to cascade coupled beam splitter by the described WSS of convergence;
The optical signal of reception is distributed to the reception equipment self connected by described cascade coupled beam splitter according to predetermined power allocation rule so that the optical signal that the optical signal medium wavelength receiving equipment interconnection receipts receives electricity bandwidth range corresponding with self processes.
9. method as claimed in claim 8, it is characterised in that the optical signal of reception is distributed to the reception equipment self connected by described cascade coupled beam splitter according to predetermined power allocation rule, specifically includes:
The optical signal of reception is distributed to the tunable optic filter self connected by described cascade coupled beam splitter according to predetermined power allocation rule;
Described tunable optic filter filters out the optical signal receiving equipment corresponding wavelength being connected with self from the optical signal received; And
The optical signal receiving equipment corresponding wavelength being connected with self that will filter out is sent to this reception equipment.
10. method as claimed in claim 8, it is characterised in that the optical signal of reception is distributed to the reception equipment self connected by described cascade coupled beam splitter according to predetermined power allocation rule, specifically includes:
The optical signal of reception is distributed to the light splitting WSS self connected by described cascade coupled beam splitter according to predetermined power allocation rule;
Described light splitting WSS filters out the optical signal receiving equipment corresponding wavelength being connected with self output port from the optical signal received; And
The optical signal receiving equipment corresponding wavelength being connected with self output port that will filter out is sent to this reception equipment.
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| CN106899348A (en) * | 2017-01-22 | 2017-06-27 | 烽火通信科技股份有限公司 | A kind of optical signal transmission method and system |
| CN110908045A (en) * | 2019-12-10 | 2020-03-24 | 深圳市晟睿通信有限公司 | Multimode fiber coupler structure |
| CN114545562A (en) * | 2022-03-25 | 2022-05-27 | 阿里巴巴（中国）有限公司 | Optical fiber connection box, data processing method and computer storage medium |
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