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OPTICAL CROSS-CONNECT DEVICE

外国特許コード F180009344
整理番号 S2016-0448-C0
掲載日 2018年4月17日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2017JP009333
国際公開番号 WO 2017155001
国際出願日 平成29年3月8日(2017.3.8)
国際公開日 平成29年9月14日(2017.9.14)
優先権データ
  • 特願2016-044823 (2016.3.8) JP
発明の名称 (英語) OPTICAL CROSS-CONNECT DEVICE
発明の概要(英語) An OXC device of route-and-select architecture in the prior art requires 120 1×9 WSSs in the entire device when the number of ports is 20. An OXC device of route-and-select type exceeding 20 ports requires a large quantity of expensive WSSs and lacks feasibility in terms of cost. Expansion matched to the extent of increase in traffic of a node is impossible, there is a lack of flexible scalability, and reasonable network operation including economy is difficult. An OXC device of the present disclosure uses smaller-scale WSSs than in prior art and internally connects the WSSs from a different viewpoint than in prior art, irrespective of the number of input ports and the number of output ports of the device, thereby making it possible to greatly reduce the cost of the device. Furthermore, this OXC device can be expanded flexibly, economically, stepwise only as necessary, and without limits in accordance with the initial state of traffic and subsequent increases thereto.
特許請求の範囲(英語) [claim1]
1. A plurality of input optical fiber is connected to a plurality of input ports and a plurality of output optical fiber is connected to a plurality of output ports, the plurality of input optical fibers and a plurality of the output by the optical fiber (N is a natural number) of the two adjacent N interconnected with the node, wherein one of the plurality of input ports 1 inputted to the wavelength-division-multiplexed optical signal to any one of a plurality of output ports of the cross-connect (OXC) optical wavelength routing device, a plurality of input ports of the device and the OXC wherein side, respectively, of the plurality of input optical fiber 1 is coupled to one input port, and, NWSSpieces of output ports, 1xNWSSconfiguration of a plurality of the wavelength-selective switch (WSS) is provided, wherein one of the adjacent node 1 within one N adjacent node j (j=1,2, N) in, the OXC apparatus connected to an input optical fiber and one of said 1 and 1 wherein one of said output optical fiber of the first number of fiber pairs NPair,j(j=1、2, 、N) and, except the one adjacent node j 1 (N-1) node and said two adjacent OXC device between said total number of fiber pairs NTotal,jwhen and, for each of the nodes of two adjacent N The N TheTotal,jN maximumMaxis, NMax>NWSSand satisfy the relationship of the optical cross connect apparatus.
[claim2]
2. A plurality of WSS, 1 1 connected to two neighbor nodes of one WSS NWSSfour of said each of the output ports, the plurality of output in an optical fiber, wherein the two neighbor nodes 1 (N-1) except the one adjacent node connected to a part of the optical fiber to the optical fiber only, to the internal routing is connected via a WSS, characterized in that the optical cross connect apparatus according to claim 1.
[claim3]
3. A plurality of input optical fiber is connected to a plurality of input ports and a plurality of output optical fiber is connected to a plurality of output ports, the plurality of input optical fibers and the plurality of output optical fibers by two N (N is a natural number) of the adjacent node are connected to each other and, wherein one of the plurality of input ports 1 of the wavelength multiplexed light input to the optical signal to the plurality of output ports of the wavelength routing apparatus in an optical cross-connect (OXC), wherein a plurality of input port side of the device and the OXC, respectively, the plurality of input 1 of the optical fiber at an input port which is connected to one, and, NWSSpieces of output ports, 1xNWSSconfiguration of a plurality of the wavelength-selective switch (WSS) is provided, wherein the plurality of WSS is, 1 adjacent nodes connected to one of claim 1 WSS NWSSfour of said each of the output ports, the plurality of output in an optical fiber, wherein the two neighbor nodes 1 (N-1) except the one adjacent node connected to only a portion of the optical fiber to the optical fiber, the internal path is connected via the WSS and characterized in that it comprises an optical cross-connect device.
[claim4]
4. A plurality of input optical fiber is connected to a plurality of input ports and a plurality of output optical fiber is connected to a plurality of output ports, the plurality of input optical fibers and a plurality of the output optical fiber N (N is a natural number) by one of the interconnected node and the adjacent node, wherein one of the plurality of input ports to the 1 input wavelength-division-multiplexed optical signal to any one of the plurality of output ports of the wavelength of the optical cross connect (OXC) routes in the device, wherein the plurality of output port side of the OXC, respectively, a plurality of the output of the optical fiber is connected to one of the 1 input port, and, NWSSpieces of output ports, 1xNWSSconfiguration of a plurality of wavelength selective switch (WSS) is provided, the one of the adjacent node 1 within N of one of the two neighboring nodes j (j=1,2, N) in, the OXC device connected to the 1 and 1 wherein one of said input optical fiber and one of the output optical fiber of the first number of fiber pairs NPair,j(j=1、2, 、N) and, except the one adjacent node j 1 (N-1) OXC node and the twenty-six adjacent between the device and the total number of fiber pairs NTotal,jwhen and, for each of the nodes of the twenty-six adjacent N The N TheTotal,jN maximumMaxis, NMax>NWSSand satisfy the relationship of the optical cross-connect apparatus.
[claim5]
5. Wherein the plurality of WSS, 1 1 connected to two neighbor nodes of one WSS NWSSfour of said each of the output ports, the plurality of input modes in an optical fiber, wherein the two neighbor nodes 1 (N-1) except the one adjacent node which is connected to only a portion of the optical fiber to the optical fiber, the internal path is connected via a WSS, characterized in that the optical cross connect apparatus according to claim 4.
[claim6]
6. A plurality of input optical fiber is connected to a plurality of input ports and a plurality of output optical fiber is connected to a plurality of output ports, the plurality of input optical fibers and the plurality of output optical fibers by two N (N is a natural number) of the adjacent node are connected to each other and, wherein one of the plurality of input ports 1 of the wavelength multiplexed light input to the optical signal to the plurality of output ports of the optical cross-connect (OXC) wavelength routing in the device, wherein the plurality of the output device on the port side OXC, respectively, a plurality of the output of the optical fiber at an input port which is connected to one 1, and, NWSSpieces of output ports, 1xNWSSwavelength selective switch (WSS) of the configuration of a plurality of, the plurality of WSS, 1 1 connected to two neighbor nodes of one of the one of said output ports of the WSS NWSS, wherein in an optical fiber having a plurality of inputs, wherein one of 1 to the adjacent node except the one adjacent node (N-1) of the optical fiber is connected to only a part of the optical fiber, the internal path is connected via the WSS and characterized in that it comprises an optical cross-connect apparatus.
[claim7]
7. Wherein the plurality of output port side OXC device, of the output ports of the WSS of the plurality of the internal path a plurality of couplers connected by a combined root &type configuration, or, wherein the plurality of output port side of the OXC, 1xNWSSconfiguration of a plurality of WSS further comprises, each of the output ports of the WSS each side of the internal path connected to one another by root &select type having the configuration of any one of claims 1-3 characterized in that the optical cross-connect apparatus.
[claim8]
8. Wherein a plurality of input port side of the device and the OXC, each of the output ports of the WSS of the plurality of the internal path is provided with a plurality of couplers connected by broadcast &select type configuration, or, wherein a plurality of input port side of the device and the OXC, 1xNWSSconfiguration of a plurality of WSS further comprises, each of the output ports of the WSS each side of the internal path is connected to each other by &select type having the configuration of the route and the optical cross-connect apparatus according to any one of claims 4-6.
[claim9]
9. Wherein the plurality of the output port side is provided with a plurality of input ports or on the side of the each of the plurality of WSS, NWSSis smaller than the number of output ports and a plurality of WSS cascaded configuration, or a coupler, the output branch of the coupler, NWSSis smaller than the number of output ports and a plurality of WSS and a structure in which a plurality of cascade-connected to the optical cross-connect apparatus according to any one of claims 1-8.
[claim10]
10. Wherein the status of use of an input optical fiber and outputs a signal corresponding to the control unit further comprises an optical cross-connect apparatus according to claim 2 characterized.
[claim11]
11. The method in accordance with the signal, the input of the optical fiber further comprises a display for displaying the status of use of the optical cross-connect apparatus according to claim 10 characterized.
[claim12]
12. Wherein the state of use of an output optical fiber to output a signal corresponding to the control unit further comprises an optical cross-connect apparatus according to claim 5 characterized.
[claim13]
13. In response to said signal, said input the use of fibre optics further comprises a display for displaying the status of the optical cross connect apparatus according to claim 12 characterized.
[claim14]
14. Wherein the status of use of the optical fiber input exceeds a threshold value further comprises a display unit according to claim 2 characterized in that the optical cross connect apparatus.
[claim15]
15. Wherein the condition of use of the optical fiber output exceeds the threshold value further comprises a display for displaying the optical cross connect apparatus according to claim 5 characterized.
[claim16]
16. The signal comprises, as said context, the target maximum assignable to the frequency band of the optical fiber and the optical path being currently used and the ratio of the total sum of the bandwidths, or, wherein the target number of the optical path of the optical fiber can be accommodated in the optical path of the currently used and the ratio of the number of output based on any one of claims 11-13 characterized in any one of the optical cross-connect apparatus.
[claim17]
17. Wherein said signal is, the ratio is a predetermined threshold or less, or, within a threshold of the predetermined range are output by the optical cross connect apparatus according to claim 16 characterized.
[claim18]
18. N number of output ports of the plurality of WSSWSSis, N-1 (the number of neighbor nodes N-1) or more in any one of claims 1-17 characterized in that the optical cross connect apparatus.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NAGOYA UNIVERSITY
  • 発明者(英語)
  • SATO KEN-ICHI
  • HASEGAWA HIROSHI
  • MORI YOJIRO
  • SATO KOSUKE
国際特許分類(IPC)
指定国 (WO2017155001)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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