JP5038001B2 - Optical cross-connect device and wavelength group accommodation method - Google Patents

Description

The present invention relates to an optical cross-connect device及beauty wavelength group accommodation how, particularly, relates to an optical cross-connect device及beauty wavelength group accommodation how to set the wavelength group path switched by the optical switch.

  In an optical communication system, wavelength division multiplexing (WDM) is used, and in this WDM, each wavelength is edited in a batch and signal processing such as route setting is performed for each generated wavelength group. For this reason, an optical cross-connect device using a wavelength selective switch that extracts a signal of a specific wavelength from wavelength multiplexed signal light is used.

  A conventional optical cross-connect device will be described.

  FIG. 23 shows a configuration of a conventional optical cross-connect device.

  The optical cross-connect device shown in the figure includes a control unit 2 that manages wavelengths and outputs a wavelength editing signal and a route switching signal, and four wavelength selective switches 1 on each of the input side and the output side. When a wavelength is input to the preceding wavelength selective switch 1, the wavelength selected based on the wavelength editing signal and the route switching signal from the control unit 2 is output to the output wavelength selective switch 1 (for example, Patent Document 1).

  The configuration of the wavelength selective switch 1 in the configuration of FIG. 23 is shown in FIG.

  The wavelength selective switch 1 shown in FIG. 24 has one input and N outputs (1 × N), and is connected to one duplexer 10, a plurality of optical switches 20 connected to the duplexer 10, and the optical switch 20. It comprises a plurality of multiplexers 30 (see, for example, Patent Document 1).

The demultiplexer 10 shown in the figure demultiplexes wavelength multiplexed signal light consisting of n channels of λ ₁ , λ ₂ ,..., Λ _n inputted from one input port into n optical switches. 20, the wavelength light output from the individual optical switches 20 is multiplexed and output by the multiplexer 30. That is, the same number of optical switches as the number of channels of wavelength multiplexed signal light are required. In the example shown in the figure, the wavelength multiplexed signal light of λ ₁ , λ ₂ ,..., Λ ₁₁ is demultiplexed into 11 and output to 11 optical switches 20.

  Each optical switch 20 has one input port and M (M is the number of multiplexers) output ports, and switches any WDM input light that is input to output to any multiplexer 30. To do.

The multiplexer 30 combines and outputs the wavelengths input from the optical switch 20. In the example of FIG. 24, four multiplexers are provided, and the combined wavelengths λ1 to λ3, wavelengths λ4 to λ6, wavelengths λ7 to λ8, and wavelengths λ9 to λ11 are output from each output port.
Japanese Patent No. 3444548 Lei Zong, Philip Ji, Ting Wang, Osamu Matsuda, Milorad Cvijetic, "Study on Wave length Cross-Connect Realized with Wavelength Selective Switches", Optical Fiber Communications 2006.

  However, in the conventional optical cross-connect device in the configuration of FIG. 23, the number of ports required for the wavelength selective switch is the same as the number of wavelength selective switches facing each other (in the figure, there are four wavelength selective switches facing each other). Therefore, a 1 × 4 wavelength selective switch is required), and as the number of wavelength multiplexed signals input to and output from the optical cross-connect device increases, there is a problem that the number of ports required for the wavelength selective switch increases accordingly. In addition, in the configuration shown in the figure, when it is desired to add another port to the input / output ports, it is necessary to change all the wavelength selective switches from 1 × 4 to 1 × 5.

The present invention has been made in view of the above points, and the number of ports of the wavelength selective switch does not increase even when the number of WDM signal inputs / outputs increases, and the configuration of the apparatus is increased with respect to the addition of WDM signal input / output ports. the reducing it an object to provide an optical cross-connect device及beauty wavelength group accommodation how capable.
Further, in the present invention further aims to provide a variety of wavelengths group path having a wavelength, it can be flexibly accommodated optical cross-connect device及beauty wavelength group accommodation how.

  FIG. 1 is a principle configuration diagram of the present invention.

The present invention (Claim 1) is an optical cross-connect device for switching wavelength group paths.
M1 first wavelength selective switches 100a that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches 100b that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports for receiving signals from the output ports of the M1 first wavelength selective switches 100a, and M2 pieces of signals for transmitting signals to the input ports of the M2 second wavelength selective switches 100b, respectively. L matrix switches 300 having output ports;
Assign a default wavelength group to be accommodated to each matrix switch,
When setting a wavelength group path in an optical cross-connect, the matrix switch that accommodates the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Control means 50 for selecting
The control means 50
Other than “in use” and “unused” indicating whether each wavelength of the input wavelength multiplexed signal and each wavelength unit of the output wavelength multiplexed signal contains a wavelength group path including the wavelength. However, if there is a restriction that a wavelength group path including the wavelength is not accommodated but a wavelength group path including the wavelength is accommodated next, a storage unit managed by “conditionally unused (check)” is provided. Have
When setting the wavelength group path in the optical cross-connect, the wavelength group is configured by combining the “conditionally unused (check)” wavelength and the unused wavelength stored in the storage unit,
The first wavelength selective switch, the second wavelength selective switch, and the matrix switch are controlled.

The present invention (Claim 2 ) is an optical cross-connect device for switching wavelength group paths.
M1 first wavelength selective switches 100a that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches 100b that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports for receiving signals from the output ports of the M1 first wavelength selective switches 100a, and M2 pieces of signals for transmitting signals to the input ports of the M2 second wavelength selective switches 100b, respectively. L matrix switches 300 having output ports;
Assign a default wavelength group to be accommodated to each matrix switch,
When setting a wavelength group path in an optical cross-connect, the matrix switch that accommodates the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Control means 50 for selecting
In the control means 50,
When setting the wavelength group path in the optical cross-connect, a matrix switch in which all of the wavelengths included in the wavelength group path to be set are included in the default wavelength group is selected.

The present invention (Claim 3 ) provides an optical cross-connect device for switching wavelength group paths.
M1 first wavelength selective switches 100a that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches 100b that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports for receiving signals from the output ports of the M1 first wavelength selective switches 100a, and M2 pieces of signals for transmitting signals to the input ports of the M2 second wavelength selective switches 100b, respectively. L matrix switches 300 having output ports;
Assign a default wavelength group to be accommodated to each matrix switch,
When setting a wavelength group path in an optical cross-connect, the matrix switch that accommodates the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Control means 50 for selecting
In the control means 50,
When setting the wavelength group path in the optical cross-connect, a matrix switch having a small number of wavelengths not included in the set wavelength group path among the wavelengths included in the default wavelength group is selected.

Further, according to the present invention (claim 4), in the control means 50,
Other than “in use” and “unused” indicating whether each wavelength of the input wavelength multiplexed signal and each wavelength unit of the output wavelength multiplexed signal contains a wavelength group path including the wavelength. However, if there is a restriction that a wavelength group path including the wavelength is not accommodated but a wavelength group path including the wavelength is accommodated next, a storage unit managed by “conditionally unused (check)” is provided. Have
When setting the wavelength group path in the optical cross-connect, the wavelength group is configured by combining the “conditionally unused (check)” wavelength and the unused wavelength stored in the storage unit,
The first wavelength selective switch, the second wavelength selective switch, and the matrix switch are controlled.

The present invention (Claim 5) is a wavelength group accommodation method in an optical cross-connect device for switching wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M2 output ports each having M1 input ports for receiving signals from output ports of M1 first wavelength selective switches and transmitting signals to the input ports of M2 second wavelength selective switches, respectively. In an optical cross-connect device composed of L matrix switches,
Assign a default wavelength group to be accommodated to each matrix switch,
When setting a wavelength group path in an optical cross-connect, the matrix switch that accommodates the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Select
In the storage unit, whether each wavelength of the input wavelength multiplexed signal and each wavelength unit of the output wavelength multiplexed signal contains a wavelength group path including that wavelength is “in use” or “not used” In addition to “Use”, if the wavelength group path including the wavelength is not accommodated, but there is a restriction that the wavelength group path including the wavelength is accommodated next, it is managed with “conditionally unused (check)” And
When setting the wavelength group path in the optical cross-connect, the wavelength group is configured by combining the “conditionally unused (check)” wavelength and the unused wavelength stored in the storage unit,
The first wavelength selective switch, the second wavelength selective switch, and the matrix switch are controlled.

The present invention (Claim 6 ) is a wavelength group accommodation method in an optical cross-connect device for switching wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M2 output ports each having M1 input ports for receiving signals from output ports of M1 first wavelength selective switches and transmitting signals to the input ports of M2 second wavelength selective switches, respectively. In an optical cross-connect device composed of L matrix switches,
Assign a default wavelength group to be accommodated to each matrix switch,
When setting a wavelength group path in an optical cross-connect, the matrix switch that accommodates the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Select
When setting the wavelength group path in the optical cross-connect, all the wavelengths included in the default wavelength group are selected from the matrix switches included in the wavelength group path to be set.

The present invention (Claim 7 ) is a wavelength group accommodation method in an optical cross-connect device for switching wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M2 output ports each having M1 input ports for receiving signals from output ports of M1 first wavelength selective switches and transmitting signals to the input ports of M2 second wavelength selective switches, respectively. In an optical cross-connect device composed of L matrix switches,
Assign a default wavelength group to be accommodated to each matrix switch,
When setting a wavelength group path in an optical cross-connect, the matrix switch that accommodates the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Select
When setting the wavelength group path in the optical cross-connect, a matrix switch having a small number of wavelengths not included in the set wavelength group path among the wavelengths included in the default wavelength group is selected.

In the present invention (Claim 8), in the storage unit, whether each wavelength of the input wavelength multiplexed signal and each wavelength unit of the output wavelength multiplexed signal contains a wavelength group path including the wavelength. What other "in use", "unused" indicating, but not containing a wavelength group path including the wavelength, then non-dated "condition if there are restrictions to accommodate the wavelength group path including the wavelength Use (check) ",
When setting the wavelength group path in the optical cross-connect, the wavelength group is configured by combining the “conditionally unused (check)” wavelength and the unused wavelength stored in the storage unit,
The first wavelength selective switch, the second wavelength selective switch, and the matrix switch are controlled.

  As described above, according to the present invention, the number of ports in the wavelength selective switch can be reduced by providing the wavelength selective switch that does not include the optical switch on the input side and the output side and arranging the optical switch therebetween. By realizing the optical cross-connect device and managing the wavelength group path accommodated in the optical switch by the control means, it becomes possible to efficiently accommodate various types of wavelength group paths in the optical switch.

In particular,
Can accommodate wavelength groups with a greater number of wavelengths than a preset default wavelength group path;
It can be accommodated even when the wavelength group to be set crosses a plurality of default wavelength groups;
There are effects such as.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, the basic configuration of the optical cross-connect device of the present invention will be described.

  FIG. 2 shows a configuration of a basic optical cross-connect device of the present invention.

  The optical cross-connect device shown in FIG. 1 includes a control unit 50, a plurality of wavelength selective switches 100, and a plurality of optical switches 300.

Optical switches ₃₀₀ 1 to 300 ₃ is provided between the wavelength selective switch 100b ₁ ~100b ₄ of the wavelength selective switch 100a ₁ ~100a ₄ and the output side (rear stage) of the input side (previous stage). For example, the wavelength selective switch 100 has a configuration as shown in FIG.

Control unit 50, the wavelength selective switch 100 to route wavelength group and the wavelength manages in the form of a table in the storage means for each optical switch 300, the previous stage of the wavelength selection switch 100a ₁ ~100a ₄ and the wavelength of the subsequent stage A wavelength editing signal for selecting a wavelength is output to the selection switches 100b _{1 to} 100b ₄ . In addition, the control unit 50 provides wavelength group paths to the optical switches 300 _{1 to} 300 ₃ provided between the wavelength selective switches 100a _{1 to} 100a _{4 in the} previous stage and the wavelength selective switches 100b _{1 to} 100b ₄ in the subsequent stage. set, and outputs the route switching signal for switching the route of the input wavelength light from the wavelength selective switch 100a ₁ of the preceding stage on the basis of the setting.

In the above configuration, each of the preceding wavelength selective switches 100a _{1 to} 100a ₄ selects an optical switch based on the wavelength editing signal input from the control unit 50 for the wavelength multiplexed signal light input from the input port. 300 _{1 to} 300 ₃ , and the optical switches 300 _{1 to} 300 ₃ switch the path based on the path switching signal input from the control unit 50, and the wavelength selection switches 100 b _{1 to} 100 b _{4 in the} subsequent stage. Output to either of these. The subsequent wavelength selection switches 100b _{1 to} 100b ₄ select the wavelength of the wavelength light input from the optical switch 300 based on the wavelength editing signal from the control unit 50, and output the wavelength from each output port.

In the above configuration, the control unit 50 uses an optical switch at the start of network operation with respect to the optical switch 300 provided between the upstream wavelength selective switches 100a _{1 to} 100a ₄ and the downstream wavelength selective switches 100b _{1 to} 100b _4. At 300, the type (wavelength) of the wavelength group path for switching the route is determined and output as a route switching signal.

However, in the method of switching the route of the optical switch 300 described above, it is not possible to switch wavelength group paths that are more than the number of optical switches. For example, as shown in FIG. 4, already wavelength group path 1 (? 1 to? 3), the wavelength group path 2 (Ramuda4～ramuda6) is set to the optical switch ₃₀₀ 1 to 300 _2, new wavelength group path 3 ( λ3, λ4) and wavelength group path 4 (λ1, λ2, λ3, λ4) cannot be accommodated.

Further, as shown in FIG.
(1) the wavelength group path G1 (λ1, λ2, λ3) to set the optical switch 300 _1;
(2) the wavelength group path G2 (λ4, λ5, λ6) setting the optical switch 300 _2;
(3) wavelength group path G3 ([lambda] 5, .lambda.6) setting the optical switch 300 _1;
(4) Delete the wavelength group path G1;
Thus, when various wavelength group paths are accommodated in the optical switch 300 in a disorderly manner, as shown in FIG. 5B, the optical switch 300 is a matrix switch and cannot be switched. For example,
(5) The processing of setting the wavelength group path G1 (λ1, λ2, λ3) from the input port IN1 of the upstream wavelength selective switch 100a1 to the output port OUT2 of the downstream wavelength selective switch 100b2 cannot be performed.

  Hereinafter, a method for solving the problems shown in FIGS. 4 and 5 and accommodating paths of various types of wavelength groups will be described.

[First Embodiment]
In this embodiment, a predetermined default wavelength group path is allocated to the optical switch, and the wavelength group to be accommodated is compared with the optical switch that accommodates the default wavelength group path including the wavelength included in the wavelength group path to be accommodated. A method for setting a path will be described.

  FIG. 6 shows an example of accommodating the wavelength group in the first embodiment of the present invention. The configuration of the optical cross-connect device shown in FIG.

  The control unit 50 includes a wavelength group setting unit 51 and a storage unit 52. The wavelength group setting unit 51 assigns each wavelength to the wavelength selective switch 100 and the optical switch 300, and stores the assigned information in the storage unit 52. . The storage unit 52 stores the wavelength group path name and the switch connection state for each of the upstream (input side) wavelength selective switch 100a, the optical switch 300, and the downstream (output side) wavelength selective switch 100b.

  FIG. 7 shows a flowchart of the operation of the wavelength group setting unit in the first embodiment of the present invention.

  The flowchart of FIG. 7A is a flowchart when setting an optical path, and FIG. 7B is a flowchart when selecting an optical switch corresponding to a wavelength group path.

  In FIG. 7A, the wavelength group setting unit 51 performs an optical switch selection process corresponding to the wavelength group path (steps 111 to 112 in FIG. 7B) (step 110).

  It is determined whether or not the wavelength setting switch 100a, the optical switch 300, and the wavelength selection switch 100b in the preceding stage of the optical switch 300 can perform switch setting (step 120). If possible, the wavelength in the preceding stage of the optical switch 300 is determined. The switch setting tables of the selection switch 100a, the optical switch 300, and the subsequent wavelength selection switch 100b are changed (step 130).

  Next, the switches of the front wavelength selection switch 100a, the optical switch 300, and the rear wavelength selection switch 100b are set (step 140).

  In FIG. 7B, the wavelength group setting unit 51 determines whether all wavelengths of the wavelength group path to be set are included in the default wavelengths preset in one optical switch 300 (step 111). In this case, the optical switch 300 is set as the wavelength group path setting target optical switch (step 112).

  The operations after step 113 will be described in the second and third embodiments.

  8 and 9 show examples of tables set in the storage unit by the wavelength group setting unit according to the first embodiment of the present invention. 8 and 9, numbers in [] correspond to numbers in [] in the following description.

8A and 9A show the wavelength selective switch 100a _{1 in} the previous stage, the optical switch 300 ₁ in FIG. 8B, the wavelength selective switch b _{1 in} the subsequent stage, and the wavelength selective switch 100a in the previous stage. ₂ and (e) show a setting table of the optical switch 300 ₂ , and (f) shows a setting table of the wavelength selective switch 100b _{2 at} the subsequent stage.

  Hereinafter, an operation example of the wavelength group setting unit 51 will be described.

Previously, the default wavelength groups D1 with respect to the optical switch _{300 1 (λ1, λ2, λ3} ) assigned to, and the default wavelength group D2 with respect to the optical switch _{300 2 (λ4, λ5, λ6} ) assigned to the optical switch 300 each It is assumed that the information assigned to is stored in the storage unit 52.

  A specific operation will be described below.

[1] First, the wavelength group path G1 (λ1, λ2, λ3) shall be set from the input port IN1 of the wavelength selective switches 100a ₁ to the output port OUT1 of the wavelength selective switch 100b _1.

Wavelength group setting unit 51, the input port IN1 of the wavelength selective switches 100a ₁ preceding the optical switch 300, an input wavelength .lambda.1, housed pathname G1, the storage unit 52 the number of the optical switch 300 to connect FIG 8 (a) Set as follows. The same applies to the wavelengths λ2 and λ3. Next, the optical switch 300 _1, number (input port IN1) of the preceding stage of the wavelength selection switch 100a to be connected to the optical switch 300 _1, housed pathname G1 (λ1, λ2, λ3) , the optical switch 300 ₁ connected thereto to set the number of the wavelength selective switch 100b ₁ of the subsequent stage (Figure 8 (b)). Next, the number of the optical switch 300 to be connected, the accommodation path name (G1), and the output wavelength are set for the wavelength selective switch 100b ₁ (FIG. 8C).

As described above, select the optical switch 300 ₁ containing the default wavelength group path including a wavelength included in the accommodation you want wavelength group path (G1) (part of) thereon, wavelength group into light switch 300 ₁ A path G1 (λ1, λ2, λ3) is set.

[2] wavelength group setting unit 51, by the same operation as [1] above, the default wavelength group D2 (λ4, λ5, λ6) optical switch 300 ₂ to the wavelength group path which has been assigned G2 (.lambda.4, [lambda] 5 sets the .lambda.6), the wavelength group path G2 to record that it has been set in the storage unit 52 with respect to the optical switch 300 ₂ (FIG. 8 (a), (e) , (c)).

[3] In the example of FIG. 8, after setting the wavelength group paths G1 (λ1, λ2, λ3) and G2 (λ4, λ5, λ6), it is desired to newly set the wavelength group path G3 (λ5, λ6). , the wavelength [lambda] 5, the default wavelength group D2 which is set in the optical switch 300 ₂ containing λ6 (λ4, λ5, λ6) are selected and set in the storage unit 52 by the same operation as [1] in the (FIG. 8 (D), (e), (f)).

[4] Next, the wavelength group setting unit 51 deletes the wavelength group path G1 (λ1, λ2, λ3) from the storage unit 52. In the example of FIG. 9, the setting of the accommodation path name (5) is deleted from the wavelength selective switch 100a ₁ , the optical switch 300 ₁ , and the wavelength selective switch 100b ₁ (FIGS. 9A, 9B, and 9C).

[5] Since the wavelength group path G1 is deleted in [4], the wavelength group path G5 (λ1, λ2, λ3) is moved from the wavelength selective switch 100a ₁ (IN1) by performing the same operation as [1]. The wavelength selective switch 100b ₂ (OUT2) can be set (FIGS. 9D, 9E, and 9F).

  Accordingly, various types of wavelength group paths can be accommodated, and wavelength group paths can be accommodated efficiently.

  Note that the operation of the control unit 50 in the first embodiment can be constructed as a program and installed in a computer used as the control unit, or distributed via a network.

[Second Embodiment]
In this embodiment, an example will be described in which a wavelength group having a larger number of wavelengths than the default wavelength group path is accommodated.

  FIG. 10 shows an example of accommodating wavelength groups in the second embodiment of the present invention. The configuration of the optical cross-connect device shown in FIG.

As in the first embodiment, the control unit 50 includes a wavelength group setting unit 51 and a storage unit 52. In the wavelength group setting unit 51, each wavelength is assigned to the optical switches 300 ₁ and 300 ₂ and assigned. The stored information is stored in the storage unit 52.

  The operation at the time of setting an optical path is the same as the operation of FIG.

  When selecting the optical switch corresponding to the wavelength group path, in FIG. 7B, the wavelength group setting unit 51 determines whether all wavelengths of the wavelength group path to be set are included in the default wavelength of one optical switch. If it is determined (step 111) and not included (step 111, No), all of the default wavelengths of the optical switch 300 among the optical switches 300 that include the wavelength of the wavelength group path to be set as the default wavelength are set. It is determined whether or not there is an optical switch at the wavelength of the wavelength group path to be performed (step 113).

In this embodiment, like the first embodiment, in advance, the default wavelength groups D1 with respect to the optical switch _{300 1 (λ1, λ2, λ3} ) assigned to, and the default wavelength with respect to the optical switch 300 ₂ It is assumed that the group D2 (λ4, λ5, λ6) is allocated and stored in the storage unit 52.

FIG. 11 is an example of a table set in the storage unit by the wavelength group setting unit according to the second embodiment of the present invention. In the figure, the numbers in [] correspond to the numbers in [] in the following description. 11, (a) is a wavelength selective switch 100a _{1 in} the previous stage, (b) is an optical switch 300 ₁ , (c) is a wavelength selective switch 100b _{1 in} the subsequent stage, (d) is a wavelength selective switch 100a ₂ in the previous stage, ( e) shows an example of a setting table of the optical switch 300 ₂ , (f) shows the wavelength selection switch 100b _{2 in} the subsequent stage, (g) shows the wavelength selection switch 100a _{3 in} the previous stage, and (h) shows an example of a setting table of the wavelength selection switch 100b _{3 in} the subsequent stage. ing.

[1] First, the front stage of the wavelength selection switch 100a ₁ from the wavelength selective switch 100b ₁ of the subsequent wavelength group path G1 (λ1, λ2, λ3) If you want to set, wavelength group setting unit 51, housing an wavelength group path when accommodating want wavelength group path G1 (λ1, λ2, λ3) default wavelength group path D1 having a wavelength included in (part of) (λ1, λ2, λ3) using an optical switch 300 ₁ containing. On top of that, the wavelength group path G1 in the optical switch 300 ₁ by the same operation as [1] in the first embodiment (.lambda.1, .lambda.2, [lambda] 3) sets a (FIG. 11 (a), (b), ( c)).

[2] Next, the wavelength group path G2 to the wavelength selective switch 100b ₁ of the subsequent stage from the wavelength selective switch 100a ₁ of the preceding stage (λ4, λ5, λ6) if you want to set a default wavelength group D2 (λ4, λ5, λ6) There select optical switch 300 ₂ is set, in the same manner as described above, the wavelength group path to the optical switch _{300 2 G2 (λ4, λ5,} λ6) sets (FIG. 11 (a), (e), (C)).

[3] Next, the wavelength group path from the wavelength selective switch 100a ₂ of the preceding stage to the wavelength selective switch 100b ₂ in the subsequent stage G3 = [lambda] 3, .lambda.4, [lambda] 5, if you want to set .lambda.6, wavelength group setting unit 51, the wavelength group path G3 Since there are D1 (including λ3) and D2 (λ4, λ5, λ6) as the default wavelength group paths including the wavelengths of the wavelength, the default wavelength group path D2 including all the wavelengths of the default wavelength group paths is selected, and the same as above wavelength group path G3 in the optical switch 300 ₂ by the method (λ3, λ4, λ5, λ6 ) sets a (FIG. 11 (d), (e) , (f)).

  This is because there is a possibility that a setting request for the remaining wavelengths (λ1, λ2) of the default wavelength group path D1 may be further made to the same input port or output port, but the setting for the wavelength of the default wavelength group path D2 is possible. This is because there is no request.

[4] In addition, the wavelength group path from the previous wavelength-selective switch 100a ₃ to the wavelength selective switch 100b ₂ in the subsequent stage G4 = .lambda.1, if you want to set λ2, select the optical switch 300 _1, in the same manner as described above , the optical switch 300 ₁ in the wavelength group path G4 (.lambda.1, .lambda.2) sets a (FIG. 11 (g), (b) , (f)).

  By performing the setting as described above, it is possible to accommodate even a wavelength group having a larger number of wavelengths than the default wavelength group path.

  Note that the operation of the control unit 50 in the second embodiment can be constructed as a program and installed in a computer used as the control unit, or can be distributed via a network.

[Third Embodiment]
In the present embodiment, a case where a wavelength group to be set straddles a plurality of default wavelength groups will be described.

  FIG. 12 shows an example of accommodating wavelength groups in the third embodiment of the present invention. The configuration of the optical cross-connect device shown in FIG.

As in the first embodiment, the control unit 50 includes a wavelength group setting unit 51 and a storage unit 52. In the wavelength group setting unit 51, each wavelength is assigned to the optical switches 300 ₁ and 300 ₂ and assigned. The stored information is stored in the storage unit 52.

  The operation at the time of setting an optical path is the same as that in FIG.

  When selecting an optical switch corresponding to a wavelength group path, in FIG. 7B, the wavelength group setting unit 51 determines whether all wavelengths of the wavelength group path to be set are included in the default wavelength of one optical switch. However, if it is not included (step 111, No), all of the default wavelengths of the optical switch 300 among the optical switches 300 that include the wavelength of the wavelength group path to be set as the default wavelength are set. It is determined whether there is an optical switch at the wavelength of the wavelength group path (step 113). If not (step 113, No), the wavelength of the wavelength group path to be set remains in the optical switch including the default wavelength. An optical switch having a small number of wavelengths (not the wavelength of the wavelength group path to be selected) is selected (step 115).

FIG. 13 is an example (part 1) of a table set in the storage unit by the wavelength group setting unit according to the third embodiment of the present invention. In the figure, the numbers in [] correspond to the numbers in [] in the following description. FIG. 4A shows the wavelength selective switch 100a _{1 in} the previous stage, FIG. 5B shows the optical switch 300 ₁ , FIG. 5C shows the wavelength selective switch 100b _{1 in} the subsequent stage, and FIG. 4D shows the wavelength selective switch 100a _{2 in} the previous stage, and FIG. Shows the setting table of the optical switch 300 ₂ and (f) of the wavelength selective switch 100b _{2 in} the subsequent stage.

In this embodiment, like the first embodiment, the wavelength group setting unit 51 assigns a default wavelength group D1 (λ1, λ2, λ3) with respect to the optical switch 300 _1, also the optical switch 300 ₂ It is assumed that a default wavelength group D2 (λ4, λ5, λ6) is assigned to and stored in the storage unit 52.

[1] First, the wavelength group G1 from the wavelength selective switch 100a ₁ of the preceding stage of the wavelength selection switch 100b ₁ of the subsequent stage (λ1, λ2, λ3) if you want to set, accommodating want wavelength group path G1 (λ1, λ2, λ3) using an optical switch 300 ₁ containing the default wavelength group path D1 having a wavelength (part of) contained in the same method as [1] in the first embodiment, wavelength groups to the optical switch 300 ₁ A path G1 (λ1, λ2, λ3) is set (FIGS. 13A, 13B, and 13C).

[2] pre-stage of the wavelength selective switches 100a ₂ from the rear stage of the wavelength selection switch 100b ₂ in the wavelength group path G2 (λ4, λ5, λ6) if you want to set, because the default wavelength group D2 is set, the optical switch 300 ₂ is set with the wavelength group path G2 (λ4, λ5, λ6) in the same manner as described above (FIGS. 13A, 13E, and 13C).

[3] Then, from the previous wavelength-selective switch 100a2 to the wavelength selective switch 100b ₂ in the subsequent stage, the wavelength group path G3 = [lambda] 3, .lambda.4, if you want to set a [lambda] 5, as the default wavelength group path including the wavelength group path G3 D1 ([lambda] 3 including) and D2 (.lambda.4, [lambda] 5) since there is, select the optical switch 300 ₂ of default wavelength group path D2 remaining wavelengths less default wavelength group path is set, sets a G3 (FIG. 13 (D), (e), (f)).

  This is because there may be a request for setting the remaining wavelengths (λ1, λ2) or the remaining wavelengths (λ6) of the default wavelength group path D1 for the same input port or output port. A larger number of wavelengths can be accommodated later if the group path D1 is left.

  FIG. 14 is an example (part 2) of a table set in the storage unit by the wavelength group setting unit according to the third embodiment of the present invention. In the figure, the numbers in [] correspond to the numbers in [] in the following description.

  The example shown in FIG. 14 is a table showing the connection relationship between the upstream wavelength selective switch 100a and the downstream wavelength selective switch 100b, and minimizes the amount of information stored in the storage unit 52.

FIG (a) the wavelength selective switches 100a ₁ of the preceding stage, (b) the wavelength selective switch 100b ₁ of the subsequent stage, (c) the previous stage of the wavelength selection switch 100a2, (d) is in the subsequent stage of the wavelength selection switch 100b ₁ table It is an example. In the figure, the accommodation path name is described as “in use”, unfilled indicates “unused”, and “x” indicates that there is a restriction when setting the wavelength group next time. Indicates “conditionally unused (checked)”.

[1] wavelength group path G1 (λ1, λ2, λ3) to set the wavelength selective switch 100a ₁ in the wavelength selective switch 100b _1, as shown in FIG. 12, the wavelength group path G1 is a λ1~λ3 There, it can be seen that is set from the wavelength selective switch 100a ₁ in the wavelength selective switch 100b _1. As shown in the first and second embodiments, the rules for selecting a default wavelength groups, the wavelength λ1~λ3 is for connection to the optical switch 300 _1, the wavelength selective switch 100a ₁ of the preceding stage, succeeding stage of connected to the output port OUT1 of the wavelength selective switch 100b ₁ (connected to the input port 1 of the optical switch 300 ₁₎ it can be seen. Further, since it is connected to the wavelength selective switch 100b ₁ of the subsequent stage, it can be seen that the optical switch 300 ₁ is connected to the wavelength selective switch 100b _1.

[2] Next, the wavelength group path G2 (λ4, λ5, λ6) when setting the selection switch 100b ₁ from the wavelength selective switch 100a ₁ is a, the wavelength group path G2 by 12, a Ramuda4～ramuda6, front it can be seen that the wavelength selective switches 100a ₁ is set to the wavelength selective switch 100b ₁ of the subsequent stage. On rules of selecting the optical switch 300 to the default wavelength group D2 is set, the wavelength λ4~λ6 is for connection to the optical switch 300 _2, the wavelength selective switches 100a ₁ of the previous stage, the optical switch 300 ₂ (optical switch it can be seen that the connection 300 connected to the _second input port 1). Further, (the output port 2 of the optical switch 300 ₂₎ optical switch 300 ₂ because it is connected to the wavelength selective switch 100b ₁ of the subsequent stage, it can be seen that connected to the wavelength selective switch 100b ₁ (output port 1).

[3] the wavelength group path G3 (λ3, λ4, λ5) is seen to have been set by the wavelength selective switches 100a ₂ to the wavelength selective switch 100b _2. From the above-described rules, the wavelength λ3~λ5 is to be set to the optical switch 300 _2, the wavelength selective switches 100a ₂ of the preceding stage has been found to be connected to the optical switch 300 ₂ (input port 2 of the optical switch 300 _2), wavelength selective switch 100b ₂ optical switch 300 because it is connected to the ₂ (the output port 2 of the optical switch 300 ₂₎ is found to be connected to the wavelength selective switch 100b _2.

[4] the wavelength group path G3 because in use the optical switch 300 ₂ is set to "condition unused with (check)" in front of the wavelength selective switch 100a ₁ wavelength .lambda.6.

  FIG. 15 is a flowchart of the wavelength group setting operation in the third embodiment of the present invention.

  First, the wavelength group setting unit 51 selects the optical switch 300 corresponding to the wavelength group path, similarly to the operation in Step 101 of the first embodiment (Step 201).

  The wavelength group setting unit 51 refers to the wavelength selection switch table in the storage unit 52, and whether the wavelength of the wavelength group path set in the preceding wavelength selecting switch 100a or the succeeding wavelength selecting switch 100b of the optical switch 300 is empty. If all are vacant, the process proceeds to step 204. If there is a wavelength in use, it is determined that setting is impossible. If there is no wavelength in use but there is a wavelength that has been checked, the process proceeds to step 203 (step 202).

  In the wavelength of the set wavelength group path, it is determined whether or not there are wavelengths that are not checked in both the preceding wavelength selective switch 100a and the succeeding wavelength selective switch 100b. If there is no wavelength that has not been checked, it is determined that setting is impossible (step 203).

  If all of them are empty in step 202 or step 203, the setting table of the optical switch of the preceding wavelength selective switch 100a and the succeeding wavelength selective switch 100b is changed (step 204).

  Next, if the default wavelength of the optical switch 300 is unused in the upstream wavelength selective switch 100a and the downstream wavelength selective switch 100b, the wavelength in the table of the optical switch in the storage unit 52 is changed to a check state. (Step 205).

  The path names accommodated in the respective tables of the upstream wavelength selective switch 100a, the optical switch 300, and the downstream wavelength selective switch 100b are set (step 206).

[Fourth Embodiment]
FIG. 16 shows an example of setting a wavelength group path in the fourth embodiment of the present invention. In the figure, the control unit 50, as in the first embodiment, is composed of a wavelength group setting unit 51 and the storage unit 52, the wavelength group setting unit 51, the respective wavelengths to the optical switch ₃₀₀ 1, 300 ₂ At the same time, the allocated information is stored in the storage unit 52.
In the figure, the default wavelength group path D1 (? 1 to? 3) is set to the optical switch 300 _1, the default wavelength group path D2 (λ4~λ6) is set to the optical switch 300 _2, the default wavelength group path D3 (λ7~ ? 9) is set to the optical switch 300 _3. At this time, wavelength group path G1 (λ2, λ3), wavelength group path G2 (λ4, λ5), wavelength group path G3 (λ3, λ4, λ5, λ6, λ7), wavelength group path G4 (λ2, λ3, λ4) Is set.

  FIG. 17 shows the wavelength group management model (No. 1) in the control unit of the fourth embodiment of the present invention, the left side shows the wavelength usage status of the wavelength selective switch 100a on the input side (previous stage), and the right side Shows the wavelength usage status of the wavelength selective switch 100b on the output side (rear stage). In the figure, black squares indicate that there are accommodated paths, white squares indicate "unused", and x in the square indicates "conditionally unused (checked)". Show. “Conditionally unused (check)” checks the unused wavelengths in the default wavelength group path of the optical switch 300 to be used when setting the wavelength group path. However, it is possible to use adjacent wavelengths in combination (using another optical switch). In FIG. 17, the numbers in [] correspond to the numbers in [] in the following description.

  Below, management operation | movement is demonstrated based on FIG.

[1] wavelength group setting unit 51, the wavelength group path to the optical switch _{300 1 G1 (λ1, λ2,} λ3) to set the. At this time, the wavelength group setting unit 51 refers to the storage unit 52 and checks the wavelength usage status of the preceding wavelength selective switch 100a ₁ and the unused wavelength of the wavelength usage status of the subsequent wavelength selective switch 100b _1. I do. Here, the wavelength selective switch 100a ₁ of the preceding stage, the λ1 wavelength selective switch 100b ₁ of the subsequent stage because it is constrained, .lambda.2, set to the optical switch 300 ₁ as the wavelength group path G1 and [lambda] 3.

[2] Next, the wavelength group setting unit 51, the wavelength group path to the optical switch 300 ₂ G2 (λ4, λ5) sets the. At this time, the wavelength group setting unit 51, preceding the wavelength selective switch 100a ₁ and the subsequent wavelength selective switch 100b ₁ of .lambda.4 storage unit 52, refers to the wavelength usage [lambda] 5, the wavelength group path G2 (λ4, λ5) setting the optical switch 300 _2.

[3] wavelength group setting unit 51, the wavelength group path to the optical switch _{300 2 G3 (λ3, λ4,} λ5, λ6, λ7) sets the. At this time, the wavelength group setting section 51, [lambda] 3 of the preceding stage of the wavelength selective switches 100a ₂ and the rear stage of the wavelength selection switch 100b ₃ of the storage unit 52, .lambda.4, [lambda] 5, .lambda.6, with reference to the wavelength usage .lambda.7, wavelength group path G3 (λ3, λ4, λ5, λ6, λ7) to be set to the optical switch 300 _2.

[4] the wavelength group setting unit 51, the wavelength group path to the optical switch 300 ₁ G4 (λ4, λ5) sets the. At this time, the wavelength group setting unit 51, front WSS 100a ₂ and the rear stage of the wavelength selection switch 100b ₂ of λ2 storage unit 52, [lambda] 3, referring to the wavelength usage .lambda.4, wavelength group path G4 (.lambda.4, [lambda] 5) setting the optical switch 300 _1.

  Next, a description will be given including an example incapable of being accommodated.

  FIG. 18 is a wavelength group management model (No. 2) in the control unit of the fourth embodiment of the present invention. As in FIG. 17, the left side shows the wavelength usage status of the wavelength selective switch 100a on the input side (front stage), and the right side shows the wavelength usage status of the wavelength selective switch 100b on the output side (back stage). In the figure, a black square indicates that there is an accommodated path, a white square indicates “unused”, and an x in the square indicates “unused (check)”.

  [1] An example in which wavelengths of “unused (no check)” can always be connected is shown.

a) the wavelength of the preceding WSS 100a ₃ .lambda.7, .lambda.8,? 9, the latter stage of the wavelength selection switch 100b _1, 100b _2, the wavelength of 100b ₃ .lambda.8, can be set using the? 9 and the optical switch 300 _3.

b) Wavelengths λ8 and λ9 of the upstream wavelength selective switch 100a ₂ can be connected to the downstream wavelength selective switches 100b ₁ , 100b ₂ , and 100b ₃ .

  [2] The wavelength of “conditionally unused (with check)” can be set when a wavelength group is configured in combination with an unused wavelength.

Preceding wavelength of the wavelength selective switch 100a ₁ .lambda.6 (conditional unused (with check)) and wavelength .lambda.7, wavelength group path that combines the .lambda.8, using an optical switch 300 _3, subsequent wavelength selective switch 100b _1, 100b ₂ can be set.

  [3] A wavelength group composed of only “conditionally unused (with check)” wavelengths cannot be set.

Wavelength λ1 of the preceding wavelength selective switches 100a _1, .lambda.6, the wavelength λ1 of the preceding wavelength selective switch 100a _3, the wavelength λ1 of the subsequent wavelength selective switch 100b _1, .lambda.6, the wavelength λ1 of the wavelength selective switch 100b ₂ in the subsequent stage alone When used, it cannot be set.

  It should be noted that there is a restriction that cannot be set when it is desired to set two or more wavelength group paths among the wavelengths assigned to one optical switch 300 (and when the same optical switch is used).

  Note that the operation of the control unit 50 in the fourth embodiment can be constructed as a program and installed in a computer used as the control unit, or distributed via a network.

[Fifth Embodiment]
In the present embodiment, a method for managing a wavelength group in a server on an optical communication network will be described.

  FIG. 19 shows a system configuration in the fifth embodiment of the present invention. The system shown in the figure includes a control server 500, a plurality of nodes A, B, C, and D and an optical fiber 510 that connects them, and the control server 500 manages a wavelength group between the plurality of nodes.

  Each node A, B, C, and D includes a preceding wavelength selective switch 100a, a succeeding wavelength selective switch 100b, and an optical switch 300 as shown in FIG.

  FIG. 21 is a diagram for explaining a wavelength group management method on a network according to the fifth embodiment of the present invention. The storage means (not shown) of the control server 500 manages whether the wavelength between the nodes is in use or not in use (with / without restriction), as indicated by a, b, c, and d in the figure. ing.

When managing a wavelength for each node in the control server 500, as shown in FIG. 21, the default wavelength groups of the optical switches 300 of each node, the optical switch 300 ₁ is the wavelength? 1 to? 3, the optical switch 300 ₂ wavelength Ramuda4～ramuda6, the optical switch 300 ₃ manages to be a wavelength Ramuda7～ramuda9.

  Here, when the wavelength group path G1 (λ1, λ2) is set between the nodes A-B-D, the wavelength selective switch 100b at the rear stage of the node A, the wavelength selective switch 100a at the front stage of the node B, and the wavelength selection at the rear stage. The wavelengths λ1 and λ2 of the switch 100b and the wavelength selective switch 100a upstream of the node D are set to “in use”, and the wavelengths λ1 and λ2 are set in the storage unit as accommodation path names. At the same time, since the nodes A, B, and D use the optical switch 300 that accommodates the wavelengths λ1 to λ3, the wavelength λ3 is set to “unused with restriction (with check)”.

  It is assumed that the wavelength group path G2 (λ6, λ7, λ8, λ9) is set between the nodes A-B-C.

  At this time, if it is desired to set the wavelength group path G3 (λ1, λ2, λ3, λ4) to the node B-C-D, referring to the storage means, the node B-D (λ1, λ2, λ3, λ4), C Since the wavelengths (λ1 to λ9) between −D are “unused”, this can be set.

  When it is desired to set the wavelength group path G4 (λ3, λ4, λ5) in the node A-B-C, referring to the storage unit, as shown in FIG. 20A, the wavelength λ3 between the nodes A-B is Although it is “unused with restriction (with check)”, since the wavelengths of adjacent wavelengths λ4 and λ5 are “unused”, an optical switch having wavelengths λ4, λ5, and λ6 of node A and node B as default wavelengths Since it is not used, it can be set by using the optical switches 300 of the wavelengths λ4 and λ5 of the nodes A and B.

  The above shows an example in which the control server 500 manages each node, but it is also possible to manage each link as shown in FIG. When grasping the setting information of all the nodes in the entire network shown in the figure, the information tables of the link entrance and the exit match. For example, in FIG. 23A, setting information of the downstream wavelength selective switch 100b (OUT1) toward the node B in the node A and settings of the upstream wavelength selective switch 100a (IN1) input from the node A in the node B The information will match. FIG. 23B shows an example in which the inputs and outputs of these links are summarized. In other words, when managing the entire network, it is the same as having a table for each link.

  The function of the control unit of the optical cross-connect device in the above embodiment can be constructed as a program and installed in a computer or distributed via a network.

  Further, the function of the control server can be constructed as a program and installed in a computer or distributed via a network.

  Further, the constructed program can be stored in a portable storage medium such as a hard disk, a flexible disk, or a CD-ROM, and can be installed or distributed in a computer.

  The present invention is not limited to the above-described embodiment, and various modifications and applications can be made within the scope of the claims.

  The present invention is applicable to a technique for setting a wavelength group path in an optical cross-connect device used in an optical wavelength multiplexing system.

It is a principle block diagram of this invention. It is a block diagram of the basic optical cross-connect apparatus of this invention. It is a structural example of the wavelength selective switch applied to this invention. FIG. 6 is a diagram (part 1) for describing a problem of switching of a wavelength group path. FIG. 6 is a diagram (part 2) for describing a problem of switching of a wavelength group path. It is an example which accommodates the wavelength group in the 1st Embodiment of this invention. It is a flowchart of operation | movement of the wavelength group setting part in the 1st Embodiment of this invention. It is an example (the 1) of the table set to a memory | storage part by the wavelength group setting part in the 1st Embodiment of this invention. It is an example (the 2) of the table set to a memory | storage part by the wavelength group setting part in the 1st Embodiment of this invention. It is an example which accommodates the wavelength group in the 2nd Embodiment of this invention. It is an example of the table set to a memory | storage part by the wavelength group setting part in the 2nd Embodiment of this invention. It is an example which accommodates the wavelength group in the 3rd Embodiment of this invention. It is an example (the 1) of the table set to a memory | storage part by the wavelength group setting part in the 3rd Embodiment of this invention. It is an example of the table which shows the setting condition for every wavelength in the 3rd Embodiment of this invention. It is a flowchart of operation | movement of the wavelength group setting part in the 3rd Embodiment of this invention. It is a figure which shows the example of a setting of the wavelength group path | pass in the 4th Embodiment of this invention. It is the wavelength group management model (the 1) in the control part of the 4th Embodiment of this invention. It is the wavelength group management model (the 2) in the control part of the 4th Embodiment of this invention. It is a system configuration figure in a 5th embodiment of the present invention. It is a figure for demonstrating the wavelength group management method on the network in the 5th Embodiment of this invention. It is an example which manages a wavelength for every node in the 5th Embodiment of this invention. It is an example which manages a wavelength for every link in the 5th Embodiment of this invention. It is a block diagram of the conventional optical cross-connect apparatus. It is a block diagram of the conventional wavelength selective switch.

Explanation of symbols

DESCRIPTION OF SYMBOLS 50 Control means, control part 51 Wavelength group setting part 52 Storage means, Storage part 100 Wavelength selection switch 110 Demultiplexer 120 Multiplexer 300 Optical switch 500 Control server 510 Optical fiber 511 Default wavelength group setting means 512 Accommodation target wavelength group setting means

Claims (8)

In an optical cross-connect device that switches wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports that receive signals from the output ports of the M1 first wavelength selective switches, and M2 transmission ports that respectively transmit signals to the input ports of the M2 second wavelength selective switches. L matrix switches with output ports;
Assign a default wavelength group to be accommodated to each of the matrix switches,
When setting the wavelength group path in the optical cross-connect, the matrix that stores the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Control means for selecting a switch, and
The control means includes
Other than “in use” and “unused” indicating whether each wavelength of the input wavelength multiplexed signal and each wavelength unit of the output wavelength multiplexed signal contains a wavelength group path including the wavelength. However, if there is a restriction that a wavelength group path including the wavelength is not accommodated but a wavelength group path including the wavelength is accommodated next, a storage unit managed by “conditionally unused (check)” is provided. Have
When setting the wavelength group path in the optical cross-connect, the wavelength group is configured by combining the “conditionally unused (check)” wavelength and the unused wavelength stored in the storage unit,
The optical cross-connect device controls the first wavelength selective switch, the second wavelength selective switch, and the matrix switch . In an optical cross-connect device that switches wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports that receive signals from the output ports of the M1 first wavelength selective switches, and M2 transmission ports that respectively transmit signals to the input ports of the M2 second wavelength selective switches. L matrix switches with output ports;
Assign a default wavelength group to be accommodated to each of the matrix switches,
When setting the wavelength group path in the optical cross-connect, the matrix that stores the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Control means for selecting a switch, and
The control means includes
When setting a wavelength group path in an optical cross-connect, all the wavelengths included in the default wavelength group are selected from the matrix switches included in the wavelength group path to be set. apparatus. In an optical cross-connect device that switches wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports that receive signals from the output ports of the M1 first wavelength selective switches, and M2 transmission ports that respectively transmit signals to the input ports of the M2 second wavelength selective switches. L matrix switches with output ports;
Assign a default wavelength group to be accommodated to each of the matrix switches,
When setting the wavelength group path in the optical cross-connect, the matrix that stores the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Control means for selecting a switch, and
The control means includes
When setting a wavelength group path in an optical cross-connect, a matrix switch having a small number of wavelengths not included in the wavelength group path to be set is selected from the wavelengths included in the default wavelength group. Optical cross-connect device. The control means includes
Other than “in use” and “unused” indicating whether each wavelength of the input wavelength multiplexed signal and each wavelength unit of the output wavelength multiplexed signal contains a wavelength group path including the wavelength. If the wavelength group path including the wavelength is not accommodated, but there is a restriction in accommodating the wavelength group path including the wavelength, a storage unit managed by “ conditionally unused (check)” is provided. Have
When setting the wavelength group path in the optical cross-connect, the wavelength group is configured by combining the “conditionally unused (check)” wavelength and the unused wavelength stored in the storage unit,
It said first wavelength selective switch, the second wavelength selective switch, optical cross-connect device according to claim 2 or 3 for controlling the matrix switch. A wavelength group accommodation method in an optical cross-connect device that switches wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports that receive signals from the output ports of the M1 first wavelength selective switches, and M2 transmission ports that respectively transmit signals to the input ports of the M2 second wavelength selective switches. In an optical cross-connect device composed of L matrix switches having an output port,
Assign a default wavelength group to be accommodated to each of the matrix switches,
When setting the wavelength group path in the optical cross-connect, the matrix that stores the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Select the switch
In the storage unit, whether each wavelength of the input wavelength multiplexed signal and each wavelength unit of the output wavelength multiplexed signal contains a wavelength group path including that wavelength is “in use” or “not used” In addition to “Use”, if the wavelength group path including the wavelength is not accommodated, but there is a restriction that the wavelength group path including the wavelength is accommodated next, it is managed with “conditionally unused (check)” And
When setting the wavelength group path in the optical cross-connect, the wavelength group is configured by combining the “conditionally unused (check)” wavelength and the unused wavelength stored in the storage unit,
The wavelength group accommodation method, wherein the first wavelength selective switch, the second wavelength selective switch, and the matrix switch are controlled . A wavelength group accommodation method in an optical cross-connect device that switches wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports that receive signals from the output ports of the M1 first wavelength selective switches, and M2 transmission ports that respectively transmit signals to the input ports of the M2 second wavelength selective switches. In an optical cross-connect device composed of L matrix switches having an output port,
Assign a default wavelength group to be accommodated to each of the matrix switches,
When setting the wavelength group path in the optical cross-connect, the matrix that stores the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Select the switch
When setting a wavelength group path in an optical cross-connect, all wavelengths included in the default wavelength group are selected from the matrix switch included in the wavelength group path to be set. Method. A wavelength group accommodation method in an optical cross-connect device that switches wavelength group paths,
M1 first wavelength selective switches that distribute the received wavelength multiplexed signals to L output ports in units of wavelength group paths;
M2 second wavelength selective switches that output a wavelength multiplexed signal by bundling a plurality of wavelength group paths received at L input ports;
M1 input ports that receive signals from the output ports of the M1 first wavelength selective switches, and M2 transmission ports that respectively transmit signals to the input ports of the M2 second wavelength selective switches. In an optical cross-connect device composed of L matrix switches having an output port,
Assign a default wavelength group to be accommodated to each of the matrix switches,
When setting the wavelength group path in the optical cross-connect, the matrix that stores the wavelength group path to be set by comparing the wavelength included in the wavelength group path to be set with the wavelength included in the default wavelength group Select the switch
When setting a wavelength group path in an optical cross-connect, a matrix switch having a small number of wavelengths not included in the wavelength group path to be set is selected from the wavelengths included in the default wavelength group. Wavelength group accommodation method. In the storage unit, whether each wavelength of the input wavelength multiplexed signal and each wavelength unit of the output wavelength multiplexed signal contains a wavelength group path including that wavelength is “in use” or “not used” In addition to “Use”, if the wavelength group path including the wavelength is not accommodated, but there is a restriction that the wavelength group path including the wavelength is accommodated next, it is managed with “conditionally unused (check)” And
When setting the wavelength group path in the optical cross-connect, the wavelength group is configured by combining the “conditionally unused (check)” wavelength and the unused wavelength stored in the storage unit,
The wavelength group accommodation method according to claim 6 or 7, wherein the first wavelength selective switch, the second wavelength selective switch, and the matrix switch are controlled.

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