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OPTICAL SWITCH DEVICE

外国特許コード F180009332
整理番号 S2016-0327-C0
掲載日 2018年2月27日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2017JP002832
国際公開番号 WO 2017131125
国際出願日 平成29年1月26日(2017.1.26)
国際公開日 平成29年8月3日(2017.8.3)
優先権データ
  • 特願2016-015710 (2016.1.29) JP
発明の名称 (英語) OPTICAL SWITCH DEVICE
発明の概要(英語) The number of servers in data centers and the amount of data traffic exchanged between storage devices are increasing sharply, and thus in order to reduce power consumption there is a need for large-scale optical switch devices having up to 1000 or more input/output ports. Wavelength routing switches exist as conventional large-scale optical switch devices, but these require the same number of wavelength tunable light sources as the number of input/output ports. A complicated control mechanism is required to enable a stable oscillation action to be achieved over a wide wavelength range using wavelength tunable light sources, and this has been an obstacle to providing large-scale optical switch devices, in terms of cost and circuit size. A wavelength routing switch according to the present disclosure is configured from N wavelength group generators, a splitting/selecting unit, and MN tunable filters. Each wavelength group generator is provided with M fixed wavelength light sources. For the fixed wavelength light sources it is possible to utilize inexpensive general purpose devices that do not require a control mechanism for wavelength tuning. It is also possible to reduce optical switch device path losses by utilizing wavelength tunable light sources having a limited narrow range, and an output port selection function using an arrayed waveguide grating (AWG) wavelength.
特許請求の範囲(英語) [claim1]
1. M is the maximum number (M is a natural number more than 2) of different wavelengths of light are multiplexed, the multiplexed optical output and one multiplexer N, one of the optical wavelength multiplexer N The multiplex light from each of the branches of the branched light of MN N branches and a number of optical, said one of the plurality of branch of each of the light-branching of N from light, wherein one of the optical wavelength multiplexer N 1 within one multiplexer to select one of the branched light corresponding to the optical switch and the Nx1 of the MN, wherein the MN Nx1 of said 1 optical switch selected by the selection of which have been multiplexed in the multiplexer, the maximum M from one of different wavelengths of light, light having a wavelength of 1 of any one of the two variable MN selects a filter to the optical switch device.
[claim2]
2. M is the maximum number (M is a natural number more than 2) of different wavelengths of light and outputs the multiplexed, the multiplexed optical output and one multiplexer N, from each of the one of the optical wavelength multiplexer N The multiplex light, and is not a natural number MN/K K N branches of the branched light of a number of optical branch, said branch of each of said four optical N branched light from among, wherein one of the optical wavelength multiplexer N multiplexer 1 in one of the branched light corresponding to the selected one of the (MN/K) dispensing the selected K Nx (DC) switches, each, wherein one of the output from the light-branching N connected to optical branching and 1x (MN/K) of N, wherein 1x (MN/K) of an optical branching N of ports is connected to the output of each of the Nx1 (MN/K) of the optical switch and configured to switch from the DC, wherein each of the optical switch by Nx1 1 in which the selected one of which have been multiplexed in the multiplexer, the maximum M from one of different wavelengths of light, the light of a wavelength 1 of any one of the two variable MN selects a filter to the optical switch device.
[claim3]
3. M is the maximum number (M is a natural number more than 2) of different wavelengths of light and outputs the multiplexed, the multiplexed optical output and one multiplexer N, from each of the one of the optical wavelength multiplexer N The multiplex light, which is the minimum natural number of MN/K≦Y optical branch Y N branches to a number of optical branches, wherein a number of optical branch of each of said branches N from light, wherein one of the optical wavelength multiplexer N 1 within one multiplexer to select one of the branched light corresponding to the selected distribution NxK Y (DC) switches, each, wherein a number of optical outputs from the branches N connected to optical branching and one 1xK N, wherein 1xK of the output of each of the light-branching N port connected to one of the optical switch and the Nx1 K from DC switch and configured to, wherein each of the Nx1 selected by the optical switch, wherein one multiplexer 1 which have been multiplexed in one of different wavelengths of light from the maximum M, any 1 MN selects light of one wavelength of the variable filter and the optical switch device and comprising.
[claim4]
4. Each, one of the maximum M 1 in light of a different wavelength of light of one wavelength and generating, by the electrical signals includes means for modulating light, the modulation of the wavelength of light output of one of 1, further comprising a plurality of light sources of the two maximum M, one of the plurality of light sources and said maximum M N 1 corresponding to the one of the one of the optical wavelength multiplexer, wavelength group generator configured to, wherein the pieces of the variable filter by the MN, 1 of any one of the modulation of the wavelength of light is selected and the optical switch device according to any one of claims 1-3.
[claim5]
5. N wherein a number of optical switch in said DC branch or at least one of the optical splitter, a wavelength selective switch and an optical branching and combination can be configured in any one of claims 1-4 characterized in that the optical switch device.
[claim6]
6. K (MN/K) of said DC switch is Nx, M NxN DC switch in one of the optical switch device according to claim 2 characterized.
[claim7]
7. N wherein one optical branch of each of the at least one of the one or more before or after the optical amplifier 1 and further comprising an optical switch device according to any one of claims 1-6.
[claim8]
8. Wherein the combiner combines, an arrayed waveguide grating (AWG) plurality and, wherein the plurality of AWG further multiplexed light from the optical combiner merges, interleaver or the wavelength selective switch with any of the claims 1-7 configured from any of the preceding claims characterized in that the optical switch device.
[claim9]
9. M is the maximum (M is a natural number of 2 or more) pieces of different wavelengths of the multiplexed optical multiplexer outputs the output of the multiplexer input L M N in one, two maximum M each of the different wavelength of light, the wavelength of the type L (M>L n is a natural number) different from a wavelength selected from the group 1 and the light of one wavelength, MN/L is a natural number, wherein each one of the one of the optical wavelength multiplexer N L N corresponding of the output ports of the two output ports are connected to each other, the two output ports from the corresponding N multiplexed light is input to an input wavelength branching/L N of selected portions, respectively, said wavelength branching/selection unit to the second input are connected to the respective N, wherein one of the optical wavelength multiplexer N multiplex light from each of the MN/L branches of the branched light of the light-branching one N, and wherein a number of optical N branch of each of said branch from light, wherein one of the optical wavelength multiplexer N multiplexer 1 in one of the branched light corresponding to the selected one of the MN/L optical switch including a Nx1 branch/selection unit to an input wavelength N, wherein Nx1 of the MN/L optical switch selected by the multiplexer in one of said 1 which have been multiplexed, from a different wavelength of light, any one of the light having a wavelength of 1 MN/L and selecting one of the variable filter and further comprising an optical switch device.
[claim10]
10. Each, one of the maximum M 1 in light of a different wavelength of light of one wavelength and generating, by the electrical signals includes means for modulating light, the 1 modulation of the wavelength of light output of one of the plurality of light sources further comprises a maximum M, one of the plurality of light sources and said maximum M, and 1 corresponding to one of said multiplexer constituting the wavelength group generator and the optical switch device according to claim 9.
[claim11]
11. Wherein the combiner combines, in a cyclic multiplexer, wherein the variable filter is one of MN/L, wherein one of the optical wavelength multiplexer N M whole wavelength different from the modulation of the wavelength of the light 1 of any of the selected one, or, in the non-cyclic multiplexer, wherein the variable filter is MN/L, wherein the whole of one multiplexer N (M + L-1) different from the wavelength of any one of the 1 modulation of the wavelength of light is configured to select the optical switch device according to claim 9 or 10 characterized.
[claim12]
12. L in said wavelength group wavelength of different types, which are continuously set M 1 is one of a wavelength within the wavelength is started, said start wavelength adjacent wavelengths (L-1) is comprised in any one of claims 9-11 and an optical switch device.
[claim13]
13. N wherein one of the optical wavelength multiplexer are connected to each of the plurality of light sources of the light modulation means MN-switched corresponding to the input port of a switch, wherein the output of the variable filter MN optical line exchange corresponding to the output port of the switch, the wavelength routing switches function as recited in any one of claims 1-12 characterized in that the optical switch device.
  • 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
  • UEDA KOH
国際特許分類(IPC)
指定国 (WO2017131125)
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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