WO2016206031A1 - Noeud de commutation tout-optique intégré - Google Patents

Noeud de commutation tout-optique intégré Download PDF

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Publication number
WO2016206031A1
WO2016206031A1 PCT/CN2015/082291 CN2015082291W WO2016206031A1 WO 2016206031 A1 WO2016206031 A1 WO 2016206031A1 CN 2015082291 W CN2015082291 W CN 2015082291W WO 2016206031 A1 WO2016206031 A1 WO 2016206031A1
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WO
WIPO (PCT)
Prior art keywords
optical switch
optical
switch group
group
output
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PCT/CN2015/082291
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English (en)
Chinese (zh)
Inventor
钱懿
麦赫瓦哈米德
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/082291 priority Critical patent/WO2016206031A1/fr
Priority to CN201580039938.7A priority patent/CN106716891B/zh
Publication of WO2016206031A1 publication Critical patent/WO2016206031A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an integrated all-optical switching node.
  • the optical communication network is mainly composed of three parts: the transmission network, the switching network and the access network.
  • the optical communication network is an opto-electric hybrid network, and the network nodes in the opto-electric hybrid network need to perform optical/electrical/electrical/optical conversion on the optical signals during the information exchange, which leads to restrictions on the switching and measurement and power consumption, and becomes a switching network.
  • AON All Optical Network
  • the all-optical switching node in the all-optical network is based on the wavelength-routed optical switching technology, and realizes high-speed exchange of information in the optical domain.
  • the optical signal is always used during the entire transmission process of the data signal from the source node to the destination node, and no optical/electrical, Electric/optical conversion, in this way, there is no obstacle to photoelectric conversion in the flow of optical signals in the network, and the exchange throughput is high and the power consumption is low.
  • FIG. 1 is a conventional integrated all-optical switching node, where the all-optical switching node includes a first optical switch group 101, a second optical switch group 102, and a third optical switch group 103.
  • Embodiments of the present invention provide an all-optical switching node for reducing the punch-through blocking of an optical signal.
  • a first aspect of the embodiments of the present invention provides an all-optical switching node, including:
  • a wave splitter group a first optical switch group, a second optical switch group, a third optical switch group, a fourth optical switch group, and a combiner group;
  • the splitter group includes a first output end and a second output end
  • the first optical switch group includes a first input end, a second input end, a first output end, and a second output end
  • the switch group includes a first input end, a second input end, a first output end, and a second output end
  • the third optical switch group includes a first output end and a first input end
  • the fourth optical open group includes a first An input end and a first output end
  • the combiner group includes a first input end;
  • a first output of the splitter bank is coupled to a first input of the first optical switch bank, a second output of the splitter bank and a second input of the first optical switch bank Connecting, the first output end of the first optical switch group is connected to the first input end of the second optical switch group, and the second output end of the first optical switch group is opposite to the second optical switch set a second input end is connected, a first output end of the second optical switch group is connected to a first input end of the fourth optical switch group, and a second output end of the second optical open group and the third a first input end of the optical switch group is connected, and a first output end of the third optical switch group is connected to a first input end of the combiner group;
  • a first lower wave optical signal is output from the first output end of the splitter group, and enters the first optical switch group through the first input end of the first optical switch group, from the first optical switch group
  • the output of the first output terminal enters the second optical switch group through the first input end of the second optical switch group, and is output from the first output end of the second optical switch group, and passes through the first of the fourth optical switch group
  • the input terminal enters the fourth optical switch group, and is downloaded from the first output end of the fourth optical switch group to the first local node;
  • a through light signal is output from the second output end of the branching filter group, and enters the first light opening group through the second input end of the first optical switch group, from the first optical switch group
  • the output of the second output terminal enters the second optical switch group through the second input end of the second optical switch group, and is outputted from the second output end of the second optical switch group, and passes through the third optical open group
  • the first input end enters the third optical open group, is output from the first output end of the third optical open group, and enters the combiner group through the first input end of the combiner group;
  • the direction of the fiber connected to the second output end of the first optical switch group is the same as the direction of the fiber connected to the first output end of the third optical switch group.
  • the method further includes a fifth optical switch group, where the fifth optical switch group includes a first input end and a second input End, a first output end and a second output end, the second optical switch group further includes a third input end, a fourth input end, a third output end, and a fourth output end, and the third optical open group further includes a second An input end, a third input end, a second input end, and a third output end, the combiner group further comprising a second input end and a third input end;
  • a first output end of the fifth optical switch group is connected to a third input end of the second optical switch group, and a second output end of the fifth optical switch group and a fourth output end of the second optical switch group
  • the input end is connected, the third output end of the second optical switch group is connected to the second input end of the third optical switch group, the fourth output end of the second optical switch group and the third optical switch a third input end of the group is connected, a second output end of the third optical switch group is connected to a second input end of the combiner group, and a third output end of the third optical switch group and the The third input of the wave set is connected;
  • the first upper wave optical signal outputted by the second local node enters the fifth optical switch group through the first input end of the fifth optical switch group, and is output from the first output end of the fifth optical switch group.
  • the third input end of the second optical switch group enters the second optical switch group, is output from the third output end of the second optical switch group, and enters through the second input end of the third optical open group
  • the third optical switch group is output from the second output end of the third optical switch group, and enters the combiner group through the second input end of the combiner group;
  • the second upper wave optical signal output by the second local node enters the fifth optical switch group through the second input end of the fifth optical switch group, and is output from the second output end of the fifth optical open group. Passing through the fourth input end of the second optical switch group to enter the second optical open group, outputting from the second output end of the second optical switch group, passing through the third input end of the third optical switch group Entering the third optical switch group, outputting from the third output end of the third optical open group, and entering the combiner group through the third input end of the combiner group;
  • the first input end of the fifth optical switch group, the second input end of the fifth optical switch group, the first output end of the fifth optical switch group, and the fifth optical switch group belongs to the same optical switch in the fifth optical switch group, the optical fiber direction of the second output end of the third optical switch group is connected to the optical fiber connected to the third output end of the third optical switch group The direction is different.
  • the all-optical switching node further includes a sixth optical switch group
  • the sixth optical switch group includes a first input end, a second input end, a first output end, and a second output end;
  • a first output end of the sixth optical switch group is connected to a first input end of the fifth optical switch group, a second output end of the sixth optical switch group, and a second output end of the fifth optical switch group Input connection
  • the first upper wave optical signal output by the second local node enters the sixth optical switch group through the first input end of the sixth optical open group, and is output from the first output end of the sixth optical open group. Passing through the first input end of the fifth optical switch group to enter the fifth optical switch group;
  • the second upper wave optical signal of the output end of the second local node enters the sixth optical switch group through the second input end of the sixth optical open group, and is output from the second output end of the sixth optical open group.
  • the fifth optical switch group is entered through the second input end of the fifth optical switch group.
  • the all-optical switching node further includes Seven-light switch group
  • the seventh optical switch group includes a first input end, a second input end, a first output end, and a second output end, and the fourth optical switch group further includes a second input end and a second output end;
  • a first input end of the seventh optical switch group is connected to a first output end of the fourth optical switch group, a second input end of the seventh optical switch group, and a second input end of the fourth optical switch group Output connection;
  • a first lower-wave optical signal outputted from the first output end of the fourth optical switch group passes through the first input end of the seventh optical open group to enter the seventh optical switch group, and the seventh optical open group
  • the first output is downloaded to the first local node
  • a second lower-wave optical signal outputted from the second output end of the fourth optical switch group passes through the second input end of the seventh optical open group to enter the seventh optical switch group, from the seventh optical open group
  • the second output is downloaded to the first local section.
  • the splitter group includes M splitters, each splitter Included in the X output terminals, the first optical switch group includes N first sub-switch groups, and each of the first sub-switch groups includes First optical switches, each of the first optical switches includes M input terminals and M output terminals, and the N second sub-switch groups of the second optical switch group are included in each of the second sub-switch groups M second optical switches, each of the second optical switches includes a first set of inputs, a first set of outputs, and a second set of outputs, the first set of inputs including Inputs, including the first set of outputs Outputs, including in the second set of outputs Outputs included in the third optical switch group a third optical switch, each of the third optical switches comprising M outputs and M inputs, the fourth optical switch set comprising a fourth optical switch, each of the fourth optical switches comprising M ⁇ N
  • One of the first set of inputs is coupled to an output of the first optical switch, and one of the first set of outputs is coupled to an input of the third optical switch Connecting, one of the output of the second group of outputs is connected to an input of one of the fourth optical switches;
  • One input end of each of the first optical switches is connected to one output end of one of the splitters, and one output end of each of the third optical switches is connected to one input end of a combiner;
  • the M is the number of optical fibers in the optical fiber direction of the all optical switching node, where X is the number of optical signals included in the optical fiber in each optical fiber direction, and the Y is the output end of the first local node. The number of inputs of the second local node.
  • the optical switch of the first set of J 1 K th of the first optical switch an input terminal of the first branching group of J 1 K 1 output terminal is connected to the demultiplexer, the optical switch of the first set of a first J K 1 output of the first optical switch And the second optical switch group
  • the first sppm (J 1 , Q) input terminals of the second optical switch are connected;
  • the K 2 output ends of the J 2 second optical switches in the second optical switch group and the third optical switch group The first (m 2 , Q) input ends of the third optical switches are connected, and the K 3 output ends of the J 2 second optical switches in the second optical switch group and the fourth optical switch set The first (K 3 -Q) fourth optical switch Inputs are connected;
  • the third group of the first optical switch of third optical switch J 1 K 1 of the first output terminal and the first sub-input terminal of J 1 K 1 is connected to sub-wave duplexer group;
  • each of the second optical switches further includes a second group of input ends, where the Two sets of inputs are included Inputs, the fifth optical switch group includes a fifth optical switch, each of the fifth optical switches includes M ⁇ N inputs and M ⁇ N outputs;
  • the second optical switch group J 2 K th of a second optical switch 3 inputs and the (K 3 -Q)th fifth optical switch in the fifth optical switch group One output is connected.
  • the sixth optical switch group includes M ⁇ N sixth optical switches, and each of the sixth optical switches includes Outputs and Inputs;
  • An output of each of the sixth optical switches is coupled to an input of one of the fifth optical switches, and an input of the sixth optical switch set is coupled to an output of the first local node.
  • the sixth optical switch groups of J 3 th of a sixth optical switch K 4 is connected to the output terminal of the optical switch of the fifth group of J 3 K 4-th input terminal of the fifth optical switch;
  • the seventh optical switch group includes M ⁇ N seventh optical switches, The seventh optical switch includes Outputs and Inputs;
  • An input end of each of the seventh optical switches is connected to an output end of one of the fourth optical switches, and an output end of the seventh optical switch group is connected to an input end of the first local node.
  • the third optical switch of the seventh optical switch of the seventh embodiment of the J group to achieve an eleventh embodiment of the first aspect, K 4 is connected to the input terminal of the optical switch of the fourth set of J 3 K 4-th output terminal of the fourth optical switch.
  • the X is 80
  • the M is 4
  • the Y is 192
  • N is 8.
  • a second aspect of the embodiments of the present invention provides an all-optical switching node, including:
  • a splitter group a first optical switch group, a second optical switch group, a third optical switch group, a fourth optical switch group, a fifth optical switch group, and a combiner group;
  • the splitter group includes four splitters, each splitter includes 80 output ends, and the first optical switch group includes 80 first optical switches, and the second optical switch group includes 32 second optical switches, the third optical switch group includes 80 third optical switches, the fourth optical switch group includes 6 fourth optical switches, and the fifth optical switch group includes 6 The fifth optical switch, each of the first optical switches includes 4 inputs and 4 outputs, and each of the second optical switches includes 16 inputs and 16 outputs, each of the The three-optical switch comprises four inputs and four outputs, each of the fourth optical switches comprising 32 inputs and 32 outputs, each of the fifth optical switches comprising 32 inputs and 32 outputs End; the combiner group includes four combiners, each combiner includes 80 inputs;
  • the first group of the first optical switch 1 J K-1 input of the first optical switch to the first branching group of J 1 K 1 output of the demultiplexer is connected to the first the first optical switch group of first optical switch J 1 K 1 of the first output terminals of the second group of the first optical switch
  • the first sppm (J 1 , 10) input terminals of the second optical switch are connected;
  • the K 2 output ends of the J 2 second optical switches in the second optical switch group and the third optical switch group The first (m 2 , 10) input ends of the third optical switches are connected, and the K 3 output ends of the J 2 second optical switches in the second optical switch group and the fourth optical switch set The first (K 3 -10) fourth optical switch The input terminals are connected, the K 3 input ends of the J 2 second optical switches in the second optical switch group and the (K 3 -10) fifth optical switches in the fifth optical switch group First Output connections;
  • the third group of the first optical switch of third optical switch J 1 K 1 of the first output terminal and the first sub-input terminal of J 1 K 1 is connected to sub-wave duplexer group;
  • the first implementation side of the second aspect of the embodiment of the present invention wherein the all-optical switching node further includes a sixth optical switch group and a seventh optical switch group;
  • the sixth optical switch group includes 32 sixth optical switches, each of the sixth optical switches includes 6 input terminals and 6 output terminals, and the seventh optical switch group includes 32 seventh optical switches. Each of the seventh optical switches includes six input terminals and six output terminals;
  • the sixth optical switch groups of J 3 K 4-th output terminal of the fifth optical switching of the optical switch of the fourth set of the first J 3 K 4-th input terminal is connected to the third optical switch, the said seventh optical switch groups of J 3 th of a seventh optical switch K 4 is connected to the input of the optical switch of the fourth set of J 3 K 4-th output terminal of the fourth optical switch;
  • the integrated all-optical switching node in the embodiment of the present invention includes a splitter group, a first optical switch group, a second optical switch group, a third optical switch group, a fourth optical switch group, and a combiner group, a first output end of the optical switch group is connected to a first input end of the second optical switch group, and a first output end of the second optical switch group is connected to an input end of the fourth optical switch group,
  • the wave light signal may be output from the first output end of the first optical switch group, and then downloaded to the local node through the second optical switch group and the fourth optical switch group, because the second output end of the first optical switch group
  • the second input end of the second optical switch group is connected, and the second output end of the second optical open group is connected to the first input end of the third optical switch group, so that the through optical signal can be from the first light
  • the second output end of the switch group is outputted from the first output end of the third optical switch group after passing through the second optical switch group.
  • the direction of the fiber connected to the first output end of the first optical switch group is the same as the direction of the fiber connected to the first output end of the third optical switch group. Therefore, compared with the prior art, the through optical signal may be outputted from the second output end of the first optical switch group, and then through to the first The first output of the three-optical switch group is sufficient to avoid punch-through blocking.
  • FIG. 1 is a schematic diagram of an all-optical switching node provided in the prior art
  • FIG. 2 is a schematic diagram of a topological diagram of an all-optical network
  • FIG. 3 is a schematic diagram of an all-optical switching node according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • Figure 12 is a partial schematic view of Figure 11 of the embodiment of the present invention.
  • Figure 13 is a partial schematic view of Figure 11 of the embodiment of the present invention.
  • FIG. 14 is a schematic diagram of another all-optical switching node according to an embodiment of the present invention.
  • Figure 15 is a partial schematic view of Figure 14 of an embodiment of the present invention.
  • Figure 16 is a partial schematic view of Figure 14 of an embodiment of the present invention.
  • the optical network topology includes a plurality of all-optical switching nodes.
  • the switching nodes are connected by optical fibers in different directions, and the number of optical fibers sent from a certain node is called.
  • each fiber contains several wavelengths.
  • the dimension of node 1 in FIG. 2 is 3, and the dimension of node 6 is 4.
  • each node can exchange optical signals between fibers in different directions.
  • the optical signals that need to be exchanged between fibers in different directions are called through optical signals, and will need to be uploaded from the local node to somewhere.
  • the optical signal in the fiber direction is called the upper wave optical signal.
  • An optical signal that would need to be downloaded from a fiber direction to a local node is referred to as a down-wave optical signal.
  • the embodiment of the present invention provides an integrated all-optical switching node architecture, which can be used to avoid punch-through blocking.
  • the all-optical switching node structure diagram provided by the embodiment of the present invention only shows the exchange of optical signals between the input and output of the node and the uploading or downloading of the optical signal by the local node when applicable.
  • the optical part of the node may be included in the structure of the all-optical switching node, in particular one or more control modules for controlling the switching and, where applicable, controlling the uploading and downloading of optical signals.
  • an embodiment of an all-optical switching node in the embodiment of the present invention includes:
  • the splitter group 200, the first optical switch group 201, the second optical switch group 202, the third optical switch group 203, the fourth optical switch group 204, and the combiner group 205 are identical to each other.
  • the splitter bank 200 includes a first output terminal 2001 and a second output terminal 2002.
  • the first optical switch group 201 includes a first input terminal 2011, a second input terminal 2012, a first output terminal 2013, and a second output.
  • the second optical switch group 202 includes a first input end 2021, a second input end 2022, a first output end 2023, and a second output end 2024.
  • the third optical switch group 203 includes a first output end 2031.
  • a first input end 2032, the fourth optical switch group 204 includes a first input end 2041 and a first output end 5042, and the combiner set 205 includes a first input end 2051.
  • the first output end 2001 of the splitter group 200 is connected to the first input end 2011 of the first optical switch group 201, and the second output end 2002 of the splitter group 200 and the first
  • the second input end 2012 of the optical switch group 201 is connected, and the first output end 2013 of the first optical switch group 201 is connected to the first input end 2021 of the second optical switch group 202, the first optical switch group
  • the second output end 2014 of the second optical switch group 202 is connected to the second input end 2022 of the second optical switch group 202, and the first output end 2023 of the second optical switch group 202 and the first optical switch group 204 are first.
  • the input end 2041 is connected, the second output end 2024 of the second optical open group 202 is connected to the first input end 2031 of the third optical switch group 203, and the first output end 2032 of the third optical switch group 203 is connected. Connected to the first input 2051 of the combiner group 205.
  • the lower wave optical signal is output from the first output end 201 of the splitter group 201, and enters the first optical switch group 201 through the first input end 2011 of the first optical switch group 201, from the first light Open
  • the first output end 2013 of the group 201 is outputted, and enters the second optical switch group 202 through the first input end 2021 of the second optical switch group 202, and is outputted from the first output end 2023 of the second optical switch group 202.
  • the first input end 2041 of the fourth optical switch group 204 enters the fourth optical switch group 204 and is downloaded from the first output end 2042 of the fourth optical switch group 204 to the first local node.
  • the through light signal is output from the second output end 2002 of the splitter group 200, and enters the first light opening group 201 through the second input end 2012 of the first optical switch group 201, from the first light
  • the second output end 2014 of the switch group 201 is output, and enters the second optical switch group 202 through the second input end 2022 of the second optical switch group 202, and the second output end of the second optical switch group 202
  • the output of 2024 enters the third optical open group 203 through the first input end 2031 of the third optical open group 203, and is output from the first output end 2034 of the third optical open group 203, after the combining
  • the first input 2051 of the bank 205 enters the combiner bank 205.
  • the fiber direction of the second output end 2014 of the first optical switch group 201 is the same as the fiber direction of the first output end 2032 of the third optical switch group 203.
  • the branching filter group includes M splitters, each splitter includes X output ends, and the first optical switch group includes N first children.
  • a switch group each of the first sub-switch groups included First optical switches, each of the first optical switches includes M input terminals and M output terminals, and the N second sub-switch groups of the second optical switch group are included in each of the second sub-switch groups M second optical switches, each of the second optical switches includes a first set of inputs, a first set of outputs, and a second set of outputs, the first set of inputs including Inputs, including the first set of outputs Outputs, including in the second set of outputs Outputs included in the third optical switch group a third optical switch, each of the third optical switches comprising M outputs and M inputs, the fourth optical switch set comprising a fourth optical switch, each of the fourth optical switches comprising M ⁇ N inputs and M ⁇ N outputs;
  • one of the first set of inputs is coupled to an output of the first optical switch, and one of the first set of outputs is coupled to one of the third optical switches
  • the input end is connected, and one of the second set of output ends is connected to one input end of one of the fourth optical switches;
  • each of the first optical switches is connected to an output end of one of the splitters, and an output of each of the third optical switches is connected to an input of a combiner;
  • the M is the number of optical fibers in the optical fiber direction of the all optical switching node
  • the X is the number of optical signals included in the optical fiber in each optical fiber direction
  • the Y is the output of the first local node. The number of inputs and the number of inputs of the second local node.
  • the first group of the first optical switch J 1 K 1-th input terminal of said first optical switch and diplexer the first group of J 1 K 1 output terminal is connected to the demultiplexer, the optical switch of the first group of the first optical switch J 1 K 1 of the first output terminal and the second optical switch group First The first sppm (J 1 , Q) input terminals of the second optical switch are connected;
  • the K 2 output ends of the J 2 second optical switches in the second optical switch group and the third optical switch group The first (m 2 , Q) input ends of the third optical switches are connected, and the K 3 output ends of the J 2 second optical switches in the second optical switch group and the fourth optical switch set
  • the first (K 3 -Q) fourth optical switch An input terminal, a first J K-1 output of the third optical switch of the optical switch of the third group and the first branching group of J 1 K input terminal 1 is connected to demultiplexer ;
  • the X is 80
  • the M is 4
  • the Y is 192
  • the N is 8.
  • the integrated all-optical switching node in the embodiment of the present invention includes a splitter group, a first optical switch group, a second optical switch group, a third optical switch group, a fourth optical switch group, and a combiner group, a first output end of the optical switch group is connected to a first input end of the second optical switch group, and a first output end of the second optical switch group is connected to an input end of the fourth optical switch group,
  • the wave light signal may be output from the first output end of the first optical switch group, and then downloaded to the local node through the second optical switch group and the fourth optical switch group, because the second output end of the first optical switch group
  • the second input end of the second optical switch group is connected, and the second output end of the second optical open group is connected to the first input end of the third optical switch group, so that the through optical signal can be from the first light
  • the second output end of the switch group is output through the second optical switch group Thereafter, it is output from the first output end of the third optical switch group.
  • the direction of the fiber connected to the first output end of the first optical switch group is the same as the direction of the fiber connected to the first output end of the third optical switch group. Therefore, compared with the prior art, the through optical signal may be outputted from the second output end of the first optical switch group, and then through to the first The first output of the three-optical switch group is sufficient to avoid punch-through blocking.
  • another embodiment of an all-optical switching node in the embodiment of the present invention includes:
  • the splitter bank 300 includes a first output terminal 3001 and a second output terminal 3002.
  • the first optical switch group 301 includes a first input terminal 3011, a second input terminal 3012, a first output terminal 3013, and a second output.
  • the second optical switch group 302 includes a first input end 3021, a second input end 3022, a first output end 3023, and a second output end 3024.
  • the third optical switch group 303 includes a first output end 3031.
  • a first input terminal 3032, the fourth optical switch group 304 includes a first input end 3041 and a first output end 3042, and the combiner set 306 includes a first input end 3061.
  • connection relationship between the splitter group 300, the first optical switch group 301, the second optical switch group 302, the third optical switch group 303, the fourth optical switch group 304, and the combiner group 306 is For details, refer to the embodiment corresponding to FIG. 3, and details are not described herein again.
  • the all-optical switching node includes a fifth optical switch group 305
  • the fifth optical switch group 305 includes a first input end 3051, a second input end 3052, and a first output end 3053.
  • the second output end 3054, the second optical switch group 302 further includes a third input end 3025, a fourth input end 3026, a third output end 3027, and a fourth output end 3028, and the third optical open group 303 further
  • the second input terminal 3033, the third input terminal 3034, the second input terminal 3035, and the third output terminal 3036 are further included.
  • the combiner group 306 further includes a second input terminal 3062 and a third input terminal 3063.
  • the first output end 3053 of the fifth optical switch group 305 is connected to the third input end 3034 of the second optical switch group 302, and the second output end 3054 of the fifth optical switch group 305 and the second
  • the fourth input end 3026 of the optical switch group 302 is connected, and the third output end 3027 of the second optical switch group 302 is connected to the second input end 3033 of the third optical switch group 303.
  • the second optical switch group 302 The fourth output terminal 3028 is connected to the third input terminal 3034 of the third optical switch group 303, the second output terminal 3035 of the third optical switch group 303, and the second input terminal 3062 of the combiner group 306. Connection, the third output end 3036 of the third optical switch group 303 and the third input end of the combiner group 306 are connected 3063;
  • the first upper wave optical signal output by the second local node enters the fifth optical switch group 305 through the first input end 3051 of the fifth optical switch group 305, and the first output end of the fifth optical switch group 305
  • the output of 3053 enters the second optical switch group 302 through the third input end 3025 of the second optical switch group 302, and is output from the third output end 3027 of the second optical switch group 302, through the third
  • the second input end 3033 of the optical open group 303 enters the third optical switch group 303, and is output from the second output end 3034 of the third optical switch group 303, and passes through the second input end of the combiner group 306.
  • 3062 enters the combiner group 306.
  • the second upper wave optical signal output by the second local node enters the fifth optical switch group 305 through the second input end 3052 of the fifth optical switch group 305, and the second optical switch group 305
  • the output terminal 3054 outputs, enters the second optical opening group 302 through the fourth input end 3026 of the second optical switch group 302, and outputs 3028 from the second output end of the second optical switch group 302.
  • the third input end 3034 of the third optical switch group 303 enters the third optical switch group 303, and is output from the third output end 3036 of the third optical open group 303, and passes through the third of the combiner group 306.
  • Input 3063 enters the combiner group 306.
  • the first input end 3051 of the fifth optical switch group 305, the second input end 3052 of the fifth optical switch group 305, the first output end 3053 of the fifth optical switch group 305, and the first The second output end 3054 of the five-optical switch group 305 belongs to the same optical switch in the fifth optical switch group 305, the second output end 3035 of the third optical switch group 303 is connected to the optical fiber direction and the third The third output end 3036 of the optical switch group 303 is connected in a different fiber direction.
  • the branching filter group includes M splitters, each splitter includes X output ends, and the first optical switch group includes N first children.
  • a switch group each of the first sub-switch groups included First optical switches, each of the first optical switches includes M input terminals and M output terminals, and the N second sub-switch groups of the second optical switch group are included in each of the second sub-switch groups M second optical switches, each of the second optical switches includes a first set of inputs, a first set of outputs, and a second set of outputs, the first set of inputs including X/N inputs, Included in the first set of outputs Outputs, including in the second set of outputs Outputs included in the third optical switch group a third optical switch, each of the third optical switches comprising M outputs and M inputs, the fourth optical switch set comprising a fourth optical switch, each of the fourth optical switches comprising M ⁇ N inputs and M ⁇ N outputs, each of the second optical switches further comprising a
  • the K 2 output ends of the J 2 second optical switches in the second optical switch group and the third In the optical switch group The first (m 2 , Q) input ends of the third optical switches are connected, and the K 3 output ends of the J 2 second optical switches in the second optical switch group and the fourth optical switch set
  • the first (K 3 -Q) fourth optical switch An input terminal, a first J K-1 output of the third optical switch of the optical switch of the third group and the first branching group of J 1 K input terminal 1 is connected to demultiplexer
  • One of the second set of inputs is coupled to an output of one of the fifth optical switches.
  • the X is 80
  • the M is 4
  • the Y is 192
  • the N is 8.
  • another all-optical switching node provided by the embodiment of the present invention includes:
  • the splitter bank 400 includes a first output terminal 4001 and a second output terminal 4002.
  • the first optical switch group 401 includes a first input terminal 4011, a second input terminal 4012, a first output terminal 4013, and a second output.
  • the second optical switch group 402 includes a first input end 4021, a second input end 4022, a first output end 4023, a second output end 4024, a third input end 4025, a fourth input end 4026, and a third end.
  • the output end 4027 and the fourth output end 4028, the third optical switch group 403 includes a first output end 403, a first input end 4032, a second input end 4033, a third input end 4034, a second input end 4035, and a a third output terminal 4036
  • the fourth optical switch group 404 includes a first input end 4041 and a first output end 4042
  • the combiner set 407 includes a first input end 4071, a second input end 4072, and a third input end 4073.
  • the splitter group 400, the first optical switch group 401, the second optical switch group 402, the third optical switch group 403, the fourth optical switch group 404, the fifth optical switch group 405, and the combiner For the connection relationship between the groups 407, refer to the corresponding embodiment in FIG. 5, and details are not described herein again.
  • the all-optical switching node includes a sixth optical switch group 406, and the sixth optical switch group 406 includes a first input end 4061, a second input end 4062, and a first output end 4063. And a second output 4064.
  • the first output end 4063 of the sixth optical switch group 406 is connected to the first input end 4051 of the fifth optical switch group 405, the second output end 4064 of the sixth optical switch group 406, and the The second input end 4052 of the fifth optical switch group 405 is connected.
  • the first upper wave optical signal A output by the second local node enters the sixth optical switch group 406 through the first input end 4061 of the sixth optical switch group 406, from the sixth optical open group 406
  • An output 4063 is output, and enters the fifth optical switch group 405 through the first input end 4051 of the fifth optical switch group 405.
  • the second upper wave optical signal B output by the second local node enters the sixth optical switch group 406 through the second input end 4062 of the sixth optical open group 406, from the sixth optical open group 406
  • the output of the two output terminals 4064 enters the fifth optical switch group 405 through the second input end 4052 of the fifth optical switch group 405.
  • the branching filter group includes M splitters, each splitter includes X output ends, and the first optical switch group includes N first children.
  • a switch group each of the first sub-switch groups includes X/N first optical switches, each of the first optical switches includes M input terminals and M output terminals, and N of the second optical switch groups a second sub-switch group, each of the second sub-switch groups includes M second optical switches, each of the second optical switches includes a first set of input ends, a first set of output ends, and a second set of output ends
  • the first set of inputs includes Inputs, including the first set of outputs Outputs, including in the second set of outputs Outputs included in the third optical switch group a third optical switch, each of the third optical switches comprising M outputs and M inputs, the fourth optical switch set comprising a fourth optical switch, each of the fourth optical switches comprising M ⁇ N inputs and M ⁇ N outputs, each of the second optical switches further comprising a second
  • an output end of each of the sixth optical switches is connected to an input end of one of the fifth optical switches, and an input end of the sixth optical switch set is connected to an output end of the first local node.
  • the second optical switch group of K 2 J 2-th output terminals of the second and the third optical switch In the optical switch group
  • the first (m 2 , Q) input ends of the third optical switches are connected, and the K 3 output ends of the J 2 second optical switches in the second optical switch group and the fourth optical switch set
  • the first (K 3 -Q) fourth optical switch An input terminal, a first J K-1 output of the third optical switch of the optical switch of the third group and the first branching group of J 1 K input terminal 1 is connected to demultiplexer , one input terminal of said second set of input terminals and an output terminal of said fifth optical switch connected to the optical switch of the sixth group of J 3 K 4-th output terminal of the sixth optical switch K 4 th of the fifth optical switch of J 3 input terminal connected to the fifth group of optical switching.
  • the X is 80
  • the M is 4
  • the Y is 192
  • the N is 8.
  • the sixth light Second of the switch group The output end is connected to the second input end of the fifth optical switch group, so when a plurality of optical signals output by the local node need to be uploaded to the optical fibers in different directions through the same optical switch in the fifth optical switch group, The optical signal output by the local node can enter the fifth optical switch group after passing through the sixth optical switch group.
  • the optical signal upload path is further increased, and the optical signal upload blocking can be further reduced.
  • another all-optical switching node provided by the embodiment of the present invention includes:
  • the splitter bank 500 includes a first output terminal 5001, a second output terminal 5002, and a third output terminal 5003.
  • the first optical switch group 501 includes a first input terminal 5011, a second input terminal 5012, and a first output.
  • the second optical switch group 502 includes a first input end 5021, a second input end 5022, a first output end 5023, and a second The output end 5024, the third input end 5025, the fourth input end 5026, the third output end 5027, the fourth output end 5028, the fifth input end 5029 and the fifth output end 5030
  • the third optical switch group 503 includes An output end 503, a first input end 5032, a second input end 5033, a third input end 5034, a second input end 5035, and a third output end 5036
  • the fourth optical switch group 504 includes a first input end 5041
  • the sixth optical switch group 506 includes a first An input terminal 5061, a second input terminal 5062, a first output terminal 5063, and a second output terminal 5064
  • the combiner group 507 includes a first input 5071, a second input 5072, and a third input 5073.
  • the splitter group 500, the first optical switch group 501, the second optical switch group 502, the third optical switch group 503, the fourth optical switch group 504, the fifth optical switch group 505, and the sixth For the connection relationship between the optical switch group 506 and the combiner group 508, reference may be made to the corresponding embodiment in FIG. 7, and details are not described herein again.
  • the all-optical switching node includes a seventh optical switch group 507, and the seventh optical switch group 507 includes a first input end 5071, a second input end 5072, and a first output end 5073. And a second output end 5074, the fourth optical switch group further includes a second input end 5043 and a second output end 5044.
  • the first input end 5071 of the seventh optical switch group 507 is connected to the first output end 5043 of the fourth optical switch group 504, the second input end 5072 of the seventh optical switch group 507, and the The second output end 5044 of the fourth optical switch group 504 is connected.
  • the first lower-wave optical signal C outputted from the first output end 5043 of the fourth optical switch group 504 enters the seventh optical switch group 507 through the first input end 5071 of the seventh optical open group 507.
  • the first output end 5073 of the seventh optical switch group 507 is downloaded to the first local node;
  • the second lower-wave optical signal D outputted from the second output end 5044 of the fourth optical switch group 504 enters the seventh optical switch group 507 through the second input end 5072 of the seventh optical open group 507.
  • the second output end 5074 of the seventh optical open group 507 is downloaded to the first local section.
  • the branching filter group includes M splitters, each splitter includes X output ends, and the first optical switch group includes N first children.
  • a switch group each of the first sub-switch groups includes X/N first optical switches, each of the first optical switches includes M input terminals and M output terminals, and N of the second optical switch groups a second sub-switch group, each of the second sub-switch groups includes M second optical switches, each of the second optical switches includes a first set of input ends, a first set of output ends, and a second set of output ends
  • the first set of inputs includes Inputs, including the first set of outputs Outputs, including in the second set of outputs Outputs included in the third optical switch group a third optical switch, each of the third optical switches comprising M outputs and M inputs, the fourth optical switch set comprising a fourth optical switch, each of the fourth optical switches comprising M ⁇ N inputs and M ⁇ N outputs, each of the second optical switches further comprising a second
  • each of the seventh optical switches is connected to an output end of one of the fourth optical switches, and an output end of the seventh optical switch set is connected to an input end of the first local node.
  • the first (m 2 , Q) input ends of the third optical switches are connected, and the K 3 output ends of the J 2 second optical switches in the second optical switch group and the fourth optical switch set
  • the first (K 3 -Q) fourth optical switch An input terminal, a first J K-1 output of the third optical switch of the optical switch of the third group and the first branching group of J 1 K input terminal 1 is connected to demultiplexer , one input terminal of said second set of input terminals and an output terminal of said fifth optical switch connected to the optical switch of the sixth group of J 3 K 4-th output terminal of the sixth optical switch an optical switch connected to the fifth group of J 3 K 4-th input terminal of the fifth optical switch, the optical switch of the seventh group of J 3 K 4-th input of the optical switch and the seventh of J 3 K 4-th output terminal of the fourth optical switch
  • the X is 80
  • the M is 4
  • the Y is 192
  • the N is 8.
  • the seventh optical switch group Adding a seventh optical switch group to the local node and the fourth optical switch group, and the first input end of the seventh optical switch group is connected to the first output end of the fourth optical switch group, the seventh The second input end of the optical switch group is connected to the second output end of the fourth optical switch group, so the optical signal that needs to be downloaded to the local node can pass through the fourth optical switch group and then from the fifth optical switch group. Downloading to the local, relative to the prior art, further increases the download path of the optical signal, which can further reduce the blocking of the optical signal download.
  • another all-optical switching node provided by the embodiment of the present invention includes:
  • the splitter group 600 the first optical switch group 601, the second optical switch group 602, the third optical switch group 603, the fourth optical switch group 604, the fifth optical switch group 605, and the combiner group 606.
  • the splitter group 600 includes four splitters, each splitter includes 80 output terminals, and the first optical switch group 601 includes 80 first optical switches, and the second optical switch group 602 includes 32 second optical switches, the third optical switch group 603 includes 80 third optical switches, and the fourth optical switch group 604 includes six fourth optical switches, and the fifth optical switch
  • the group 605 includes six of the fifth optical switches, each of the first optical switches includes four input terminals and four output terminals, and each of the second optical switches includes 16 input terminals and 16 output terminals.
  • Each of the third optical switches includes four inputs and four outputs, each of the fourth optical switches including 32 inputs and 32 outputs, each The fifth optical switch includes 32 inputs and 32 outputs;
  • the combiner group 606 includes 4 combiners, and each combiner includes 80 inputs.
  • the first optical switch group 601 in the first output terminal of J 1 J 1 K 1-th input of the first optical switch group demultiplexer K 1 in the first sub-wave filter 600 is connected, the first optical switch 601 in the first group of first optical switch J 1 K 1 of the first output terminals of the second group of the first optical switch
  • the first sppm (J 1 , 10) inputs of the second optical switch are connected.
  • the K 2 output ends of the J 2 second optical switches in the second optical switch group 601 and the third optical switch group 603 Spm (J 2 , 10) input terminals of the third optical switch are connected, and the K 3 output ends of the J 2 second optical switches of the second optical switch group 602 and the fourth optical switch
  • the first (K 3 -10) fourth optical switch in group 604 The input terminals are connected, the K 3 input ends of the J 2 second optical switches in the second optical switch group 602 and the (K 3 -10) fifth lights in the fifth optical switch group 605 Switch number One output is connected.
  • the third optical switch 603 in the first group of third optical switch J 1 K 1 of the first output terminals of the demultiplexer input terminal group J 1 K 1 in the first sub-wave filter 600 is connected;
  • the all-optical switching node further includes a sixth optical switch group 607 and a seventh optical switch group 608.
  • the sixth optical switch group 607 includes 32 sixth optical switches, each of the sixth optical switches includes 6 input ends and 6 output ends, and the seventh optical switch group 608 includes 32 A seventh optical switch, each of the seventh optical switches comprising 6 inputs and 6 outputs.
  • the sixth optical switch group 607 of J 3 K 4-th output optical switch of the fourth and the fifth optical switch group 605 of J 3 K 4-th input terminal is connected to the third optical switch the seventh optical switch group 608 of J 3 K 4-th input of the seventh optical switch and the fourth optical switch group 604 of J 3 K 4-th output optical switch of the fourth connection.
  • the disclosed device can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Optical Communication System (AREA)

Abstract

La présente invention concerne, selon un mode de réalisation, un noeud de commutation tout-optique qui est utilisé pour réduire le blocage de pénétration d'un signal optique. Le procédé selon un mode de réalisation de la présente invention comprend : un groupe de démultiplexeurs d'ondes, un premier groupe de commutateurs optiques, un deuxième groupe de commutateurs optiques, un troisième groupe de commutateurs optiques, un quatrième groupe de commutateurs optiques et un groupe de multiplexeurs d'ondes; au moins deux entrées du deuxième groupe de commutateurs optiques sont connectées à au moins deux sorties d'un commutateur optique du premier groupe de commutateurs optiques, une entrée du premier groupe de commutateurs optiques est connectée à la sortie du groupe de démultiplexeurs d'ondes, la sortie du deuxième groupe de commutateurs optiques est connectée à l'entrée du troisième groupe de commutateurs optiques, la sortie du troisième groupe de commutateurs optiques est connectée à l'entrée du groupe de multiplexeurs d'ondes, la sortie du deuxième groupe de commutateurs optiques est connectée à l'entrée du quatrième groupe de commutateurs optiques, et la sortie du quatrième groupe de commutateurs optiques est connectée à l'entrée du noeud local.
PCT/CN2015/082291 2015-06-25 2015-06-25 Noeud de commutation tout-optique intégré WO2016206031A1 (fr)

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CN201580039938.7A CN106716891B (zh) 2015-06-25 2015-06-25 一种集成型全光交换节点

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