WO2022157847A1 - 光クロスコネクト装置 - Google Patents
光クロスコネクト装置 Download PDFInfo
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- WO2022157847A1 WO2022157847A1 PCT/JP2021/001781 JP2021001781W WO2022157847A1 WO 2022157847 A1 WO2022157847 A1 WO 2022157847A1 JP 2021001781 W JP2021001781 W JP 2021001781W WO 2022157847 A1 WO2022157847 A1 WO 2022157847A1
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- 230000003287 optical effect Effects 0.000 title claims abstract description 162
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 230000000644 propagated effect Effects 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims description 31
- 230000001902 propagating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 10
- 239000000835 fiber Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3502—Optical coupling means having switching means involving direct waveguide displacement, e.g. cantilever type waveguide displacement involving waveguide bending, or displacing an interposed waveguide between stationary waveguides
- G02B6/3504—Rotating, tilting or pivoting the waveguides, or with the waveguides describing a curved path
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
- G02B6/3546—NxM switch, i.e. a regular array of switches elements of matrix type constellation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02042—Multicore optical fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
- G02B6/3871—Ferrule rotatable with respect to plug body, e.g. for setting rotational position ; Fixation of ferrules after rotation
Definitions
- the present disclosure relates to an optical cross-connect device using multi-core optical fibers.
- Non-Patent Document 1 Various methods have been proposed as all-optical switches that switch the path of light as it is (see, for example, Non-Patent Document 1).
- an optical cross-connect device having a plurality of optical switches on the input and output sides it is important to monitor the signal light passing through the optical cross-connect device in order to ensure the reliability of the network.
- An object of the present disclosure is to make it possible to economically monitor signal light passing through an optical cross-connect device with low loss.
- the optical cross-connect device of the present disclosure is An optical cross-connect device having a plurality of optical path switching means on the input and output sides,
- the optical path switching means includes two multi-core optical fibers with different core arrangements, Optical coupling between the cores of the two multi-core optical fibers can be switched by rotating at least one of the two multi-core optical fibers, A first multi-core optical fiber of the two multi-core optical fibers, a first core that transmits signal light propagated by optical coupling between the cores of the two multi-core optical fibers; and a second core that propagates leakage light of the signal light.
- the same device since the signal light is monitored using the leaked light of the signal light, the same device can share both the optical branch of the signal light and the optical branch for monitoring. , the monitoring of a plurality of signal lights passing through the optical cross-connect device can be realized economically with low loss.
- FIG. 1 is a diagram showing an optical path configuration of an optical cross-connect device according to an embodiment of the present disclosure
- FIG. 1 is a schematic diagram showing the principle of an optical switch according to an embodiment of the present disclosure
- FIG. FIG. 3 is a schematic diagram showing a cross section of a ferrule on which an MCF is mounted according to the first embodiment of the present disclosure
- FIG. 3 is a schematic diagram showing a cross section of a ferrule on which an MCF is mounted according to the first embodiment of the present disclosure
- FIG. 3 is a schematic diagram showing paths of crosstalk components in the optical switch according to the first embodiment of the present disclosure
- FIG. 3 is a schematic diagram showing paths of crosstalk components in the optical switch according to the first embodiment of the present disclosure
- FIG. 3 is a schematic diagram showing paths of crosstalk components in the optical switch according to the first embodiment of the present disclosure
- FIG. 1 is a diagram showing an optical path configuration of an optical cross-connect device according to an embodiment of the present disclosure
- FIG. 1 is a schematic diagram
- FIG. 5 is a schematic diagram showing a cross section of a ferrule mounting an MCF according to a second embodiment of the present disclosure
- FIG. 5 is a schematic diagram showing a cross section of a ferrule mounting an MCF according to a second embodiment of the present disclosure
- FIG. 4 is a diagram showing the relationship between the core arrangement radius and static angular accuracy of a multi-core optical fiber and excess loss;
- FIG. 1 is a diagram showing an optical path configuration of an optical cross-connect device according to an embodiment of the present disclosure.
- the optical cross-connect device comprises four optical switches S9-x on one side and four optical switches S10-x on the other side, and between them (S11) optical switches having a single core each other.
- Cross-wired with fiber Note that x is an input/output port number, which means 1 to 4 since the number of ports is 4 in this embodiment.
- the optical switches S9-x and 10-x function as optical path switching means.
- the optical switches S9-x and S10-x are connected to two multi-core optical fibers (hereinafter referred to as MCF) with core combining/branching means S5-x and S6-x connected to both ends, respectively, and core combining/branching means S7-x. and two MCFs with S8-x connected to both ends.
- Core couplers S5-x and S6-x couple single-mode optical fibers (hereinafter referred to as SMF) S1-x, S3-x and S11 each having a single core to each core of the MCF.
- Core combining and branching means S7-x and S8-x respectively combine SMFS2-x, S4-x and S11 having a single core to each core of MCF.
- the optical switches S9-x and S10-x have a mechanism for rotating either one of the two MCFs, and switch the optical path by switching the optical coupling between the cores of the MCF by rotating the MCF. ing.
- the core coupling/branching means S5-x, S6-x, S7-x, and S8-x are provided with a fiber bundle type melting and drawing mechanism as shown in Non-Patent Document 2, for example.
- the optical switches S9-x and S10-x operate as 1 ⁇ 4 and 4 ⁇ 1 relay optical switches, respectively. Specifically, for example, a signal light input to the main path S1-x passes through one of the optical switches S10-x via the optical switch S9-x and the cross wiring S11, and passes through the main path S10-x on the opposite side. It becomes an optical path that outputs to one of the paths S2-x.
- the optical cross-connect device according to the embodiment of the present disclosure is capable of bi-directional optical conduction, and conversely, the signal light input to the main path S2-x is output to one of the main paths S1-x. becomes an optical path.
- optical cross-connect device shown in FIG. It is characterized by being used for
- FIG. 2 is a schematic diagram showing the principle of the optical switch provided in the optical cross-connect device according to the embodiment of the present disclosure.
- the central axes of MCFS22 and S23 are arranged on the same straight line.
- the optical switch includes a mechanism S24 that rotates one of ferrules S20 and S21 mounted with MCFS22 and S23 at an arbitrary angle around the ferrule axial direction (z direction), as described in Patent Document 1, for example. By doing so, the optical coupling between the cores between the MCFS 22 and S23 is switched. Since the optical switch is composed of almost the same components as the optical connector, it does not require a collimator or vibration isolation mechanism, and is inexpensive and highly reliable.
- core combining/branching means of S5-x or S8-x on the input/output side of the main path and S6-x or S7-x on the cross wiring S11 side are provided.
- the input/output fibers of the core combining/branching means S5-x or S8-x on the input/output side of the main path are from S1-x or S2-x as the main path and S3-x or S4-x as the sub path. It is configured.
- Said secondary path is connected to the optical monitoring means S25.
- the MCFS 22 connected to the core combining/branching means S5-x or S8-x functions as a first multi-core optical fiber
- the MCFS 23 connected to the core combining/branching means S6-x or S7-x functions as a second multi-core. It functions as an optical fiber.
- the light monitoring means S25 is a photodetector and plays a role of monitoring the signal light propagated from the main path S11 side and transmitted through the optical switch S9-x or S10-x and converting it into an electric signal.
- the two sub-paths provided in the core combining/branching means S5-x or S8-x are connected to the optical monitoring means S25, but the optical monitoring means S25 does not monitor the presence or absence of signal light. Since it is sufficient that the received light amount is propagated as much as possible, the number should be one or more.
- FIG. 1 is schematic diagrams showing structures of MCFS22 and S23 respectively mounted on ferrules S20 and S21 according to the first embodiment of the present disclosure.
- the core arrangement of the MCFS22 on the input/output side of the main path and the MCFS23 on the cross wiring S11 side are different from each other. characterized by
- the MCFS22 and S23 forming the optical switch have the same core arrangement radius R as each other.
- the MCFS 22, which is the input/output side of the main path, has a core S33, which is the first core of the main path, on a concentric circle having the core arrangement radius R, and has at least one or more secondary paths at positions different from the core S33. It has a core S32 as a certain second core.
- the MCFS 23 on the side of the cross wiring S11 includes a plurality of cores S34 on concentric circles having the core arrangement radius R. As shown in FIG. These MCFS22 and S23 can be produced by using the method of Patent Document 2, for example.
- the present disclosure is such that the cores S33 and S34 are arranged at positions at a certain distance from the central axis of the MCFS22 and S23, and at least one of the MCFS22 and S23 rotates about the central axis so that the core S34 Either of them is optically coupled to the core S33.
- the core S34 is connected to an SMF with a single core in core combining/branching means S6-x or S7-x, respectively.
- the core coupling/branching means S6-x and S7-x are cross-wired with each other. Therefore, by switching the core S34 optically coupled with the core S33, the connection destinations of the core combining/branching units S6-x and S7-x can be switched.
- the core S33 which is the main path of the MCFS 22, and the core S32, which is the sub-path, are optically coupled in the core coupling/branching means of S5-x and S8-x so that the desired crosstalk occurs. , core-to-core distances, and bond lengths are adjusted.
- FIG. 5 is a schematic diagram showing paths of crosstalk components in optical switches S9-x and S10-x according to the first embodiment of the present disclosure.
- most of the light S40 incident from the main path S1-x or S2-x on the input/output side of the optical cross-connect device passes through the main path (S11 side). Let this transmitted power be A1.
- part of the light becomes a crosstalk component S41 and is transmitted to the sub-path (S11 side).
- this transmission power be A2.
- the crosstalk coefficient generated in the direction from the input/output side of the optical switch to the cross wiring side is (Equation 1)
- XT1 10 ⁇ log 10 (A2/A1) (1) (unit: decibel).
- the crosstalk XT2 is dominated by the characteristics of the core combining/branching means S5-x or S8-x arranged on the input/output side of the main path in the optical cross-connect device, and the crosstalk coefficient XT1 becomes is sufficiently large.
- XT2 is set to -20 dB when approximately 1% of the power B1 through which the signal light is transmitted is directed to the optical monitoring means S25.
- the inter-core distance between the core S33, which is the main path, and the core S32, which is the sub path, is changed, or the length of the MCFS 22 is changed. It can be adjusted by setting It is also possible to adjust the crosstalk coefficient to a desired value in the core combining/branching means S5-x or S8-x on the input/output side of the main path.
- the crosstalk component S41 in FIG. 5 becomes an input to another opposing optical switch via the cross wiring part S11 due to the configuration of the optical cross-connect device according to the embodiment of the present disclosure.
- S41-1 and S41-2 corresponds to S41-1 and S41-2 in Let C1 and C2 be the powers that these components pass through the main path and the sub path, respectively.
- C1 transmitted through S41 ⁇ S41-1 has a sufficiently small power for the signal light transmitted with low loss, and B1>>C1 does not pose a problem.
- C2 transmitted from S41 to S41-2 is not coupled to the core of the MCF used for the optical switch, the light hardly conducts and C2 can be ignored.
- the core coupling/branching means which is the input/output side of the main path constituting the optical switch on one side of the optical cross-connect device according to the first embodiment of the present disclosure
- one of which is a main path for signal light, and at least one or more of a plurality of other optical fibers is a sub-path connecting to the optical monitoring means input from the other side of the optical cross-connect device.
- the MCF on the input/output side of the main path constituting the optical switch is arranged on a concentric circle having the same core arrangement radius as the MCF on the cross-wiring side, and the core serving as the main path on a concentric circle having a different core arrangement radius.
- a core conducting to the sub-path is provided, and a part of the signal light is guided to the optical monitoring means by utilizing crosstalk from the main path to the sub-path.
- the existence of transmitted signal light is monitored on the output side.
- the optical monitoring means of the optical cross-connect device In order to create a list of port numbers on both sides of the connecting device and whether or not they are used, it is necessary to know from which opposite port the monitored signal light is input based on the path state of the optical switches S9-x and S10-x. However, it is easy to know the state of the optical path in advance by using, for example, the control log of the optical switch.
- the presence of transmitted signal light is monitored on the output side.
- the transmission loss of the main path of the optical cross-connect device and the crosstalk of at least one or more sub-paths connected to the optical monitoring means are calculated. must be known in advance. This can be easily known by measuring the characteristics of the device in advance, for example, in the same way as in the conventional optical monitoring method in which the transmission loss of the optical branching device to be inserted is known in advance in the prior art.
- the uniformity of the transmission loss due to the path state should be known in advance. It is important to be able to list port numbers and their input/output levels to some degree of precision.
- an optical fiber that does not serve as a main path is used as an optical path leading to an optical monitoring means. It is possible to realize an optical cross-connect device equipped with a low-loss and economical input/output port monitoring function without the need to separately insert an optical branching device.
- (Embodiment 2) 7 and 8 are schematic diagrams showing structures of MCF, S22 and S23 respectively mounted on ferrules S20 and S21 according to the second embodiment of the present disclosure.
- the MCF used in the optical switch according to the embodiment of the present disclosure is characterized in that the MCFS 22 on the input/output side of the main path and the MCFS 23 on the cross wiring S11 side have mutually different core arrangements.
- the MCFS22 and S23 forming the optical switch have the same core arrangement radius R as each other.
- the MCFS 22 on the input/output side of the main path has a core S33 on the concentric circle having the core arrangement radius R, and has at least one or more sub-paths around the core S33 on the main path. It has a core S32.
- the MCFS 23 on the side of the cross wiring S11 includes a plurality of cores S34 on concentric circles having the core arrangement radius R. As shown in FIG.
- FIG. 9 is a diagram showing the relationship between the core arrangement radius and the excess loss due to the rotation angle deviation with respect to the stationary angle accuracy in the rotation of the optical path.
- the core arrangement radius is R (unit: ⁇ m)
- the excess loss due to rotational angle deviation in each optical path is ⁇ (unit: degree)
- the mode field diameters of the input side and output side optical paths can be expressed by the following equation using w1 and w2 .
- the excess loss TR is 0.2 dB, and the lost light leaks to the outside of the core. .
- loss due to misalignment of the axes is generally also generated as a main cause of connection loss. Therefore, by arranging the core S34 serving as the sub-path around the core S33 serving as the main path, the connection loss component due to the rotational deviation and axial misalignment of the core S33 serving as the main path will spread around the core S33 serving as the main path. The leaked light is coupled to the sub-path and propagates from the sub-path to the optical monitoring means, so that the input/output port can be monitored.
- the core S33, which is the main path of the MCFS 22, and the core S32, which is the sub path, are not optically coupled in the core combining/branching means of S5-x and S8-x so that the signal light mainly passes through the core which is the main path.
- the core profiles of the core S33 serving as the main path and the core S32 serving as the sub-path are adjusted so that the leaked light propagates through the core serving as the sub-path. For example, it is possible by adjusting the relationship among the refractive index n1 of the core S33 serving as the main path, the refractive index n2 of the core S32 serving as the sub-path, and the refractive index n3 of the clad so that n1>n2>n3.
- the core combining/branching means which is the input/output side of the main path constituting the optical switch on one side of the optical cross-connect device according to the second embodiment of the present disclosure, , one of which is a main path for signal light, and at least one or more of a plurality of other optical fibers is a sub-path connecting to the optical monitoring means input from the other side of the optical cross-connect device.
- the MCF on the input/output side of the main path constituting the optical switch has a core on the concentric circle having the same core arrangement radius as the MCF on the cross wiring side, and a core on the main path around the core on the main path.
- a core that conducts to the sub-path is provided, and part of signal light is generated by utilizing leaked light that is coupled to the sub-path and is caused by rotational misalignment or axial misalignment in connection between the main path and the MCF on the cross wiring side. to the optical monitoring means.
- the core combining/branching means and the monitoring light are Both branches can be shared by the same device, and monitoring of multiple input/output ports can be realized economically with low loss.
- the existence of the transmitted signal light, or more precisely, the existence of the leaked signal light is monitored on the output side.
- the existence of the transmitted signal light, or more precisely, the existence of the leaked signal light is monitored on the output side.
- loss due to rotational deviation of the main path of the optical cross-connect device and propagation of at least one or more sub-paths connected to the optical monitoring means It is necessary to know the loss in advance, but this can be easily known by measuring the characteristics of the device in advance.
- the transmission loss of the optical switches S9-x and S10-x varies depending on the optical path state (that is, the core coupling state)
- the rotational misalignment loss of the main path including the uniformity of the transmission loss due to the path state, is It is important to know that it is possible to create a list of port numbers and their input/output levels to some degree of precision.
- an optical fiber that does not serve as a main path is used as an optical path leading to an optical monitoring means. It is possible to realize an optical cross-connect device equipped with a low-loss and economical input/output port monitoring function without the need to separately insert an optical branching device.
- the optical switch according to the present disclosure is low-loss and economical in an optical transmission line using a single-mode optical fiber, for example, in an optical access transmission line where particularly strict low-loss requirements are required, It can be used as an optical cross-connect device that can monitor the port status in real time.
- S1-x main path S2-x: main path S3-x: sub-path S4-x: sub-path S5-x: core combining/branching means S6-x: core combining/branching means S7-x: core combining/branching means S8- x: core coupling means S9-x: optical switch S10-x: optical switch S11: cross wiring S20: ferrule S21: ferrule S22: MCF S23: MCF S24: Ferrule rotating mechanism S25: Light monitoring means S32: Subpath core S33: Main path core S34: Core S40: Light incident from main path S41: Crosstalk component S42: Light incident from main path S43: Crosstalk component
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Abstract
Description
光経路切替手段を入出力側にそれぞれ複数具備する光クロスコネクト装置であって、
前記光経路切替手段は、コアの配置の異なる2本のマルチコア光ファイバを備え、
前記2本のマルチコア光ファイバのうちの少なくとも一方の回転によって、前記2本のマルチコア光ファイバのコア同士の光結合が切り替え可能であり、
前記2本のマルチコア光ファイバのうちの第1のマルチコア光ファイバは、
前記2本のマルチコア光ファイバのコア同士の光結合によって伝搬された信号光を透過する第1のコアと、
前記信号光の漏洩光を伝搬する第2のコアと、を具備する。
図1は本開示の実施形態に係る光クロスコネクト装置の光経路構成を示す図である。ここでは一例として入力4×出力4の完全非閉塞光クロスコネクト装置を示している。前記光クロスコネクト装置は、一方の側に4つの光スイッチS9-xおよびもう一方の側に4つの光スイッチS10-xを具備しており、それらの間(S11)は互いに単数コアを有する光ファイバでクロス配線されている。なお、xは入出力ポート番号であり、本実施形態ではポート数が4であるため、1~4を意味しているものとする。また光スイッチS9-xおよび10-xは光経路切替手段として機能する。
図3及び図4は、それぞれ、本開示の第1の実施の形態に係るフェルールS20及びS21に実装されるMCFS22およびS23の構造を示す模式図である。ここで、本開示の実施形態に係る光スイッチS9-x及びS10-xにおいて用いるMCFS22およびS23は、前記主経路の入出力側のMCFS22とクロス配線S11側のMCFS23が互いに異なるコア配置であることを特徴とする。
(数1)
XT1=10×log10(A2/A1) (1)
(単位:デシベル)で与えられる。XT1は、前記光クロスコネクト装置において、クロス配線側に配置されるコア合分岐手段S6-xまたはS7-xの特性が支配的となり、例えば、非特許文献3に記載の例のように、波長1550nmでXT1=-50dB以下となるように設計することが可能である。
(数2)
XT2=10×log10(B2/B1) (2)
(単位:デシベル)で与えられる。この際、前記クロストークXT2は、前記光クロスコネクト装置において、主経路の入出力側に配置されるコア合分岐手段S5-xまたはS8-xの特性が支配的となり、前記クロストーク係数XT1よりも十分大きいことを特徴とする。例えば、信号光が透過するパワーB1に対して、約1%を光監視手段S25に導く場合には、XT2=-20dBと設定される。
図7及び図8は、それぞれ、本開示の第2の実施の形態に係るフェルールS20、S21に実装されるMCF、S22およびS23の構造を示す模式図である。ここで、本開示の実施形態に係る光スイッチにおいて用いるMCFは、前記主経路の入出力側のMCFS22とクロス配線S11側のMCFS23が互いに異なるコア配置であることを特徴とする。
S2-x:主経路
S3-x:副経路
S4-x:副経路
S5-x:コア合分岐手段
S6-x:コア合分岐手段
S7-x:コア合分岐手段
S8-x:コア合分岐手段
S9-x:光スイッチ
S10-x:光スイッチ
S11:クロス配線
S20:フェルール
S21:フェルール
S22:MCF
S23:MCF
S24:フェルール回転機構
S25:光監視手段
S32:副経路コア
S33:主経路コア
S34:コア
S40:主経路から入射された光
S41:クロストーク成分
S42:主経路から入射された光
S43:クロストーク成分
Claims (5)
- 光経路切替手段を入出力側にそれぞれ複数具備する光クロスコネクト装置であって、
前記光経路切替手段は、コアの配置の異なる2本のマルチコア光ファイバを備え、
前記2本のマルチコア光ファイバのうちの少なくとも一方の回転によって、前記2本のマルチコア光ファイバのコア同士の光結合が切り替え可能であり、
前記2本のマルチコア光ファイバのうちの第1のマルチコア光ファイバは、
前記2本のマルチコア光ファイバのコア同士の光結合によって伝搬された信号光を透過する第1のコアと、
前記信号光の漏洩光を伝搬する第2のコアと、を具備する、
光クロスコネクト装置。 - 前記光経路切替手段は、前記第1のマルチコア光ファイバの複数コアを、単数コアを有する複数の光ファイバに互いに変換するコア合分岐手段を備え、
前記コア合分岐手段が備える単数コアを有する複数の光ファイバは、
前記第1のコアで伝搬された信号光を透過する主経路と、
前記第2のコアで伝搬された漏洩光を光監視手段に伝搬する副経路と、を具備する、
ことを特徴とする請求項1に記載の光クロスコネクト装置。 - 前記光経路切替手段は、
マルチコア光ファイバの中心軸から一定距離の位置に、第1のコアが配置されている、前記第1のマルチコア光ファイバと、
前記第1のマルチコア光ファイバと同一の中心軸上に中心軸が配置され、前記中心軸から前記一定距離に、複数のコアが配置されている第2のマルチコア光ファイバと、
を備え、
前記第1のマルチコア光ファイバ又は前記第2のマルチコア光ファイバの少なくともいずれかが前記中心軸を中心に回転することで、前記第2のマルチコア光ファイバに備わるいずれかのコアと前記第1のコアが光結合する、
請求項2に記載の光クロスコネクト装置。 - 前記第2のコアは、前記第2のマルチコア光ファイバの中心軸から一定距離とは異なる距離に配置されている、
請求項3に記載の光クロスコネクト装置。 - 前記第2のコアは、前記第1のコアの周囲に配置されている、
請求項1から4のいずれかに記載の光クロスコネクト装置。
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JPH0282212A (ja) * | 1988-09-20 | 1990-03-22 | Fujitsu Ltd | 光スイッチ |
US20120128294A1 (en) * | 2009-06-30 | 2012-05-24 | Trumpf Laser Gmbh + Co. Kg | Optical Beam Switch |
US20170299806A1 (en) * | 2016-04-18 | 2017-10-19 | Chiral Photonics, Inc. | Pitch reducing optical fiber array and multicore fiber comprising at least one chiral fiber grating |
WO2017217539A1 (ja) * | 2016-06-17 | 2017-12-21 | 住友電気工業株式会社 | 結合型マルチコア光ファイバの軸合わせ方法 |
JP2019002964A (ja) * | 2017-06-12 | 2019-01-10 | 株式会社インターエナジー | 光路切替装置および光路切替方法 |
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JP2011232706A (ja) | 2010-04-30 | 2011-11-17 | Fujitsu Ltd | 光デバイス、光モニタシステム及び光デバイスの製造方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0282212A (ja) * | 1988-09-20 | 1990-03-22 | Fujitsu Ltd | 光スイッチ |
US20120128294A1 (en) * | 2009-06-30 | 2012-05-24 | Trumpf Laser Gmbh + Co. Kg | Optical Beam Switch |
US20170299806A1 (en) * | 2016-04-18 | 2017-10-19 | Chiral Photonics, Inc. | Pitch reducing optical fiber array and multicore fiber comprising at least one chiral fiber grating |
WO2017217539A1 (ja) * | 2016-06-17 | 2017-12-21 | 住友電気工業株式会社 | 結合型マルチコア光ファイバの軸合わせ方法 |
JP2019002964A (ja) * | 2017-06-12 | 2019-01-10 | 株式会社インターエナジー | 光路切替装置および光路切替方法 |
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