Optical communication device, control method for optical communication device, and program

Abstract

The purpose of the present disclosure is to provide an optical communication apparatus, a method for controlling an optical communication apparatus, and a non-transitory computer-readable medium whereby it is possible to prevent a misconnection between an optical signal transmission device and an optical signal wavelength multiplexing device, or even when a misconnection occurs, minimize the influence thereof on a rear-stage device. An optical communication apparatus (10t) according to the present disclosure is provided with an optical signal transmission device (11), an optical signal wavelength multiplexing device (12) to which an optical signal output from the optical signal transmission device (11) is input through an input port, and a transmission control device (13) which controls the optical signal transmission device (11) and the optical signal wavelength multiplexing device (12). The transmission control device (13) includes an optical multiplex control means (132) for controlling an optical multiplex attenuation means (122) of the optical signal wavelength multiplexing device (12) on the basis of output power of the optical signal from the optical signal transmission device (11) and an output power value that has been registered in advance.

Description

[Technical Field]

[0001] The present disclosure relates to an optical communication device, a method for an optical communication device, and a non-transitory computer-readable medium, and in particular to an optical communication device, a control method for an optical communication device, and a non-transitory computer-readable medium that can prevent erroneous connection between an optical signal transmitting device and an optical signal wavelength multiplexing device, and minimize the impact on downstream devices even if a erroneous connection occurs. [Background technology]

[0002] In recent years, the rapid increase in traffic between data centers and mobile networks, including cloud services, has led to a growing demand for high-capacity, configurable optical communication lines. This requires the communication signals of different services and users to be separated by wavelength, modulated into optical signals, and then reconnected to a single optical cable for each route. This requires frequent insertion and removal of optical cables between optical signal transmitters and optical signal wavelength division multiplexers, and between optical signal receivers and optical signal wavelength division multiplexers. Even a momentary insertion or removal of the wrong optical cable can cause fluctuations in the optical power of the entire downstream optical line and interference between wavelengths, potentially affecting the operation of the entire optical line. Because communication signals from different services and users share a single optical cable, the impact can be widespread, making it increasingly important to prevent misconnections. It is also increasingly important to minimize the impact of misconnections on the entire downstream optical line.

[0003] Patent Document 1 discloses that visual information using an LED and a visible laser and auditory information using a speaker alert workers to prevent them from inserting or removing the wrong optical cable into or from a distribution board. Patent Document 1 does not disclose how to reduce the impact on downstream optical lines if a wrong connection is made despite the alert information.

[0004] Patent Document 2 states, "Upon detecting the start of a port-to-port connection operation, the control unit selects the first pair of ports to be connected. Then, the control unit sets the shutter unit that transmits optical signals to the selected ports to an open state. The control unit causes the light-emitting unit corresponding to each port selected as the connection target to flash orange. This allows the user to visually determine that an optical cable should be connected between the port adjacent to the flashing orange light-emitting unit and another port adjacent to the flashing orange light-emitting unit. For example, when the control unit is notified that an optical signal has been received at the input port selected as the connection target, it causes the light-emitting unit corresponding to each port in the pair to light green." In other words, Patent Document 2 discloses the use of LEDs and shutter units to prevent incorrect connections. However, Patent Document 2 does not disclose how to reduce the impact on downstream optical lines if an incorrect connection is made despite the issuing unit's warning information. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-007934 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-162881 Summary of the Invention [Problem to be solved by the invention]

[0006] As mentioned above, if a misconnection occurs despite warning information, there is a problem of how to reduce the impact on the optical fiber line.

[0007] An object of the present disclosure is to provide an optical communication device, a control method for an optical communication device, and a non-transitory computer-readable medium that solve the above-mentioned problems. [Means for solving the problem]

[0008] The optical communication device according to the present disclosure comprises: an optical signal transmitting device; an optical signal wavelength division multiplexing device that inputs the optical signal output from the optical signal transmitting device at an input port; a transmission control device that controls the optical signal transmitting device and the optical signal wavelength multiplexing device; Equipped with The optical signal transmitting device includes: an optical transmission attenuation means for controlling the output power of the optical signal; an output port through which the optical signal having the output power controlled is output; an optical transmission notifying means for notifying the optical signal wavelength division multiplexing equipment of connection information including information on the input port to which the output port should be connected, and for notifying an external party of the optical signal transmitting equipment; The optical signal wavelength multiplexing equipment comprises: the input port for receiving the optical signal output from the output port; an optical multiplexing notification means for notifying the connection information to an external device of the optical signal wavelength multiplexing equipment; an optical multiplexing attenuation means for controlling the input power of the input optical signal, The transmission control device an optical transmission control means for controlling the optical transmission attenuation means based on the output power of the optical signal and a pre-registered output power value; and optical multiplexing control means for controlling the optical multiplexing attenuator means based on the output power of the optical signal and a pre-registered output power value.

[0009] A method for controlling an optical communication device according to the present disclosure includes: The optical signal transmitting device Controlling the output power of the optical signal; outputting the optical signal with the output power controlled from an output port; notifying the optical signal wavelength division multiplexing equipment of connection information relating to a connection between the output port of the optical signal transmission equipment and the input port of the optical signal wavelength division multiplexing equipment and notifying an external device of the optical signal transmission equipment; The optical signal wavelength multiplexing equipment, inputting the optical signal output from the output port into the input port; notifying the connection information to an external device of the optical signal wavelength division multiplexing equipment; and controlling the input power of the input optical signal, The transmission control device controlling the output power based on the output power of the optical signal and a pre-registered output power value; and controlling the input power based on the output power of the optical signal and a pre-registered output power value.

[0010] The present disclosure provides a non-transitory computer-readable medium, comprising: The optical signal transmitting device Controlling the output power of the optical signal; outputting the optical signal with the output power controlled from an output port; notifying the optical signal wavelength division multiplexing equipment of connection information relating to a connection between the output port of the optical signal transmission equipment and the input port of the optical signal wavelength division multiplexing equipment and notifying the optical signal transmission equipment to an outside of the optical signal transmission equipment; The optical signal wavelength multiplexing equipment, inputting the optical signal output from the output port into the input port; notifying the connection information to an external device of the optical signal wavelength division multiplexing equipment; controlling the input power of the input optical signal; The transmission control device controlling the output power based on the output power of the optical signal and a pre-registered output power value; controlling the input power based on the output power of the optical signal and a pre-registered output power value; A program that causes a computer to execute the above is stored. [Effects of the Invention]

[0011] According to the present disclosure, it is possible to provide an optical communication device, a control method for an optical communication device, and a non-transitory computer-readable medium that can prevent erroneous connection between an optical signal transmitting device and an optical signal wavelength multiplexing device, and minimize the impact on downstream devices even if a erroneous connection occurs. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a block diagram illustrating an optical communication system according to an embodiment. [Figure 2] 1 is a block diagram illustrating an optical communication device according to an embodiment; [Figure 3] 1 is a block diagram illustrating an optical signal transmission device according to an embodiment; [Figure 4] 1 is a block diagram illustrating an optical signal wavelength multiplexing device according to an embodiment; [Figure 5] 10 is a flowchart illustrating an operation of the optical communication device according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, the present embodiment will be described with reference to the drawings. In the drawings, the same or corresponding elements are designated by the same reference numerals, and for clarity of explanation, duplicate explanations will be omitted as necessary.

[0014] [Embodiment Mode] <Optical communication system> FIG. 1 is a block diagram illustrating an optical communication system according to an embodiment.

[0015] 1, an optical communication system 10s according to an embodiment includes an optical communication device (transmitter) 10t, an optical communication device (receiver) 10r, and a transmission line 10d. For simplicity, in FIG. 1, the optical communication device (transmitter) 10t shows only the transmitter, and the optical communication device (receiver) 10r shows only the receiver.

[0016] The optical communication device (transmitting unit) 10t includes an optical signal transmitting device 11 that generates multiple optical signals each having a different wavelength band, an optical signal wavelength multiplexing device 12 that multiplexes the optical signals of the multiple wavelength bands and outputs them together on a single optical cable, and a transmission control device 13 that monitors and controls the optical signal transmitting device 11 and the optical signal wavelength multiplexing device 12, respectively.

[0017] The optical communication device (receiving unit) 10r includes an optical signal wavelength demultiplexing device 17 that separates the wavelengths of an optical signal, an optical signal receiving device 16 that receives multiple optical signals separated by wavelength, and a receiving control device 18 that monitors and controls the optical signal wavelength demultiplexing device 17 and the optical signal receiving device 16, respectively.

[0018] The transmission path 10d includes an optical cable for transmission and a relay switching device 19 that amplifies the optical signal and switches the path.

[0019] <Optical communication device (transmitter)> FIG. 2 is a block diagram illustrating an optical communication device according to an embodiment. 2 shows only the transmitting section of the optical communication device, and the receiving section of the optical communication device is omitted for simplicity of explanation.

[0020] 2, an optical communication device 10t according to the embodiment includes an optical signal transmitting device 11, an optical signal wavelength multiplexing device 12, and a transmission control device 13. The optical signal wavelength multiplexing device 12 receives the optical signal output from the optical signal transmitting device 11 at an input port 122. The transmission control device 13 controls the optical signal transmitting device 11 and the optical signal wavelength multiplexing device 12.

[0021] The optical signal transmitting device 11 has an optical transmission attenuation means 111, an output port 112, an optical transmission notifying means 113, an optical modulation means 114, and a light source 115. The optical signal transmitting device 11 uses the multiple light sources 115 to generate optical signals in different wavelength bands.

[0022] The optical transmission attenuation means 111 controls the output power of the optical signal output from the output port 112. The output port 112 outputs the optical signal with the controlled output power. The optical transmission notification means 113 notifies the optical signal wavelength division multiplexing equipment 12 of the connection information and also notifies the outside of the optical signal transmitting equipment 11. The connection information includes information about the input port 122 to which the output port 112 should be connected.

[0023] The connection information further includes, in addition to information on the input port 122 to which the output port 112 should be connected, information on whether the output port 112 is in use or unused, information on whether the output port is registered or unregistered, an output power value of the output port 112, information on whether the input port 122 to which the output port 112 should be connected is in use or unused, information on whether the input port 122 to which the output port 112 should be connected is registered or unregistered, and an input power value of the input port 122 to which the output port 112 should be connected. The connection information is registered in advance, for example, before the worker starts work.

[0024] The optical signal wavelength division multiplexing device 12 has an input port 122, an optical multiplexing notification means 123, an optical multiplexing attenuation means 121, and an array waveguide grating (AWG) 127. In the optical signal wavelength division multiplexing device 12, the AWG 127 multiplexes optical signals of multiple wavelength bands and outputs the multiplexed signals together into a single optical cable.

[0025] The input port 122 receives the optical signal output from the output port 112 of the optical signal transmitting equipment 11. The optical multiplexing notification means 123 notifies the outside of the optical signal wavelength multiplexing equipment 12 of connection information. The optical multiplexing attenuation means 121 controls the input power of the input optical signal.

[0026] The transmission control device 13 has an optical transmission control means 131 and an optical multiplexing control means 132. The transmission control device 13 monitors and controls the optical signal transmitting device 11 by the optical transmission control means 131, and monitors and controls the optical signal wavelength multiplexing device 12 by the optical multiplexing control means 132.

[0027] The optical transmission control means 131 controls the amount of attenuation of the optical transmission attenuator means 111 based on the output power of the optical signal output from the optical signal transmitter 11 and a pre-registered output power value.

[0028] Specifically, when the output power of the optical signal is greater than a pre-registered output power value, the optical transmission control means 131 controls the attenuation amount of the optical transmission attenuation means 111 so that the output power of the optical signal is equal to or less than the pre-registered output power value.

[0029] The optical multiplexing control means 132 controls the amount of attenuation of the optical multiplexing attenuation means 121 based on the output power of the optical signal output from the optical signal transmitting equipment 11 and a pre-registered output power value.

[0030] Specifically, if the output port 112 is not connected to the input port 122 that it should be connected to based on the connection information, the optical multiplexing control means 132 sets the attenuation amount of the optical multiplexing attenuator means 121 to the maximum value. This makes it possible to minimize the influence on downstream equipment, for example, the AWG 127, even if the output port 112 and the input port 122 are connected incorrectly.

[0031] Furthermore, if the optical wavelength of the optical signal output from the output port 112 differs from the pre-registered optical wavelength based on the connection information, the optical multiplexing control means 132 sets the attenuation amount of the optical multiplexing attenuator means 121 to the maximum value. This makes it possible to minimize the impact on downstream equipment, such as the AWG 127, even if an optical signal with an incorrect wavelength is connected.

[0032] Furthermore, if the input port 122 to which the output port 112 should be connected is registered as an unused input port based on the connection information, the optical multiplexing control means 132 sets the attenuation amount of the optical multiplexing attenuator means 121 to the maximum value. This makes it possible to minimize the influence on downstream equipment, for example, the AWG 127, even if an optical signal is connected to an input port registered as unused.

[0033] Furthermore, based on the connection information, when the output power of the optical signal output from the optical signal transmitting equipment 11 is greater than a pre-registered output power value, the optical multiplexing control means 132 controls the optical multiplexing attenuation means 121 so that the input power of the optical signal input to the optical signal wavelength multiplexing equipment 12 is equal to or less than the pre-registered input power value.

[0034] Furthermore, based on the connection information, the optical multiplexing control means 132 sets the attenuation amount of the optical multiplexing attenuator means 121 to the maximum value before the output port 112 is connected to the input port 122 to which it should be connected. This makes it possible to minimize the effect on downstream equipment, for example, the AWG 127, even if an optical signal is erroneously output from the optical signal transmitter 11 due to a malfunction or the like and the erroneous optical signal is input to the input port 122.

[0035] <Optical signal transmitter> FIG. 3 is a block diagram illustrating an optical signal transmitting device according to an embodiment. FIG. 3 shows the configuration of optical signal transmitter 11 when outputting an optical signal of one wavelength λn.

[0036] Based on information notified from the transmission control device 13, the optical signal transmitting device 11 controls whether or not to output an optical signal, controls the output power, and controls the turning on and off of the output side LED.

[0037] As shown in FIG. 3, the optical signal transmitting device 11 includes a light source 115, an optical modulation means 114, an optical transmission attenuation means 111, a tapped photodetector (TAP-PD: TAP-Photo Detector) 116, an output port 112, an optical transmission notification means 113, and an output side LED.

[0038] The light source 115 outputs unmodulated continuous wave (CW) light of wavelength λn. The optical modulation means 114 optically modulates an electrical signal with the CW light and outputs the optically modulated signal to the optical transmission attenuation means 111. The optical transmission attenuation means 111 changes the attenuation amount of the optical signal passing through it and controls (adjusts) the output power of the optical signal output from the output port 112. The TAP-PD 116 detects the optical signal after passing through the optical transmission attenuation means 111 (the optical signal after the attenuation amount has been changed by the optical transmission attenuation means 111). The output port 112 is connected to an optical cable via an optical adapter. The optical transmission notification means 113 notifies an operator outside the optical signal transmission equipment 11 of the output port 112 to be connected via an output side LED. The output side LED is intended to indicate to the operator the output port 112 to be connected.

[0039] The output side LED indicates to the worker the output port 112 to be connected, thereby alerting the worker and preventing incorrect connection. Note that although the signal after optical modulation is an optically modulated signal, for simplicity, it will be described as an optical signal.

[0040] <Optical signal wavelength multiplexing equipment> FIG. 4 is a block diagram illustrating an optical signal wavelength multiplexing device according to an embodiment. FIG. 4 shows the configuration of an optical signal wavelength multiplexing device 12 that multiplexes a plurality of optical signals with different wavelengths.

[0041] The optical signal wavelength multiplexing device 12 controls the optical multiplexing and attenuating means 121 and the input side LED in response to a notification (instruction) from the transmission control device 13, and multiplexes a plurality of optical signals by wavelength.

[0042] As shown in FIG. 4, the optical signal wavelength division multiplexing equipment 12 includes an input port 122 , an input-side LED, an optical multiplexing notifying means 123 , a TAP-PD 126 , an optical multiplexing attenuating means 121 , an AWG 127 , and an output port 128 .

[0043] The input port 122 connects the optical signal output from the optical signal transmitting device 11 via an optical cable and an optical adapter, thereby connecting the output port 112 of the optical signal transmitting device 11 and the input port 122 of the optical signal wavelength division multiplexing device 12 to which the output port 112 is to be connected via an optical cable.

[0044] The optical multiplexing notification means 123 notifies an operator outside the optical signal wavelength multiplexing equipment 12 of the input port 122 to be connected via an input side LED. The input side LED is used to indicate to the operator the input port 122 to be connected. The AWG 127 multiplexes optical signals of multiple wavelengths. The output port 128 outputs the multiplexed optical signal.

[0045] By indicating to the worker the input port 122 to be connected using the input side LED, the worker's attention can be drawn and incorrect connections can be prevented.

[0046] <Operation overview> The main operations of the optical signal transmitting device and the related main operations of the transmission control device will be described. Based on information (instructions) notified from the transmission control device 13, the optical signal transmitting device 11 controls whether or not to output an optical signal, the output power, and the turning on and off of the output side LED.

[0047] Specifically, the light source 115 outputs CW light with a constant output power to the optical modulation means 114. The optical modulation means 114 converts the electrical signal into an optical signal using the CW light and outputs it to the optical transmission attenuation means 111. The optical transmission attenuation means 111 changes the attenuation amount of the optical signal passing through it, adjusts the output power of the optical signal, and outputs the optical signal to the output port 112 and the TAP-PD 116. The TAP-PD 116 monitors the output power of the optical signal. The optical transmission attenuation means 111 controls the output power of the optical signal output from the output port 112 based on the optical power of the optical signal monitored by the TAP-PD 116. The output port 112 is connected to an optical cable via an optical adapter and outputs the optical signal. The output-side LED turns on and off in a predetermined color based on information (instructions) notified from the transmission control device 13.

[0048] When output port 112 and input port 122 to which output port 112 should be connected are connected, optical transmission control means 131 of transmission control device 13 lights up an output-side LED provided at output port 112 in a first color, for example, yellow, based on the connection information. Similarly, when output port 112 and input port 122 to which output port 112 should be connected are connected, optical multiplexing control means 132 lights up an input-side LED provided at input port 122 to which output port 112 should be connected in a first color, for example, yellow, based on the connection information.

[0049] That is, when connecting the output port 112 and the input port 122, the output side LED of the output port 112 and the input side LED of the input port 122 to be connected light up in yellow. This visually indicates to the worker which input / output port the optical cable should be inserted or removed from. This shows the worker which output port 112 and input port 122 to be connected, thereby drawing the worker's attention and preventing incorrect connection.

[0050] The main operations of the optical signal wavelength division multiplexing equipment and the related main operations of the transmission control equipment will be explained. The optical signal wavelength division multiplexing equipment 12 has a plurality of, for example, m input ports 122, and optical signals of different wavelengths are input to each input port 122. Here, m is a natural number. An optical cable is connected to each input port 122 via an optical adapter. The TAP-PD 126 monitors the input power of the input optical signal. The optical multiplexing attenuation means 121 controls the input power of the optical signal input to the input port 122 based on the optical power of the optical signal monitored by the TAP-PD 126.

[0051] The optical multiplexing control means 132 of the transmission control device 13 connects the output port 112 to the input port 122 to which it should be connected based on the connection information, and when the input power of the optical signal input to the optical signal wavelength multiplexing device 12 becomes equal to or less than a pre-registered input power value, lights up the input side LED in a second color, for example, green.

[0052] <Specific examples of operation> FIG. 5 is a flowchart illustrating the operation of the optical communication device according to the embodiment. FIG. 5 shows an example of the operation (processing) when an output port of an optical signal transmitting device and an input port of an optical signal wavelength multiplexing device are connected by an optical cable.

[0053] 5, transmission control device 13 registers output port 112 of optical signal transmission device 11 to be connected and the output power value of the optical signal output from optical signal transmission device 11, and simultaneously registers input port 122 and wavelength of optical signal wavelength division multiplexing device 12 to be connected thereto (step S101). The work of step S101 may be performed, for example, by an operator operating transmission control device 13.

[0054] The transmission control device 13 notifies (instructs) the optical signal wavelength multiplexing device 12 of the input port 122 to be connected, the wavelength, and its input power value (registered connection information) (step S102). The transmission control device 13 also notifies the optical signal transmitting device 11 to be connected of the set value of the output power (registered connection information) (step S103).

[0055] The optical signal wavelength division multiplexing equipment 12 sets the attenuation amount of the optical multiplexing attenuator 121 to the maximum value for the input port 122 registered as an unused connection destination so that the optical signal does not enter the AWG 127 at the subsequent stage (step S104).

[0056] The optical signal wavelength division multiplexing equipment 12 acquires the registered connection information and turns on the input side LED of the input port 122, for example, in yellow (step S105).

[0057] The optical signal transmitting device 11 acquires the registered connection information and lights up the output side LED of the output port 112, for example, in yellow (step S106).

[0058] The worker connects output port 112, whose output side LED is on, to input port 122, whose input side LED is on, with an optical cable. After completing the connection, the worker inputs a work completion message to transmission control device 13 (step S107). Step S107 may be replaced by each of optical signal transmitting device 11 and optical signal wavelength multiplexing device 12 detecting that an optical cable has been connected.

[0059] After completing the work, the transmission control device 13 notifies the optical signal transmitting device 11 of an output instruction for the optical signal (step S108). The output instruction includes an instruction to make the output power from the output port 112 equal to the set value.

[0060] The optical signal transmitting device 11 receives the output instruction, outputs an optical signal from the output port 112 at the set output power, and changes the output side LED to green (step S109).

[0061] The optical signal wavelength division multiplexing device 12 changes the input side LED to red when the TAP-PD 126 detects an optical signal input to the input port 122 and the input power of the optical signal is lower or higher than a set value (step S110).

[0062] When the input power of the optical signal to the input port 122 reaches a set value, the optical signal wavelength division multiplexing device 12 changes the input side LED to green and sets the attenuation amount of the optical multiplexing attenuator 121 to the minimum (step S111). This cancels the blocking of the optical signal and outputs (inputs) the optical signal to the AWG 127 at the subsequent stage.

[0063] The optical signal wavelength division multiplexing device 12 notifies the transmission control device 13 of the release of the blocking of the optical signal (step S112).

[0064] The transmission control device 13 receives the notification of the release of the cutoff, displays the completion of the work on the screen, and notifies each device of the completion of the work (step S113).

[0065] The optical signal transmitting device 11 receives the notification of the completion of the work and turns off the output side LED of the output port 112 (step S114).

[0066] The optical signal wavelength division multiplexing equipment 12 receives the notification of the completion of the operation and turns off the input side LED of the input port 122 (step S115), thereby completing the operation.

[0067] <Effects> According to the embodiment, the output side LED and the input side LED indicate to the worker the output port and input port to be connected. This draws the worker's attention and allows the worker to visually recognize the port to be inserted or removed, thereby preventing work errors caused by the worker inserting or removing incorrectly and preventing incorrect connections.

[0068] Furthermore, according to the embodiment, if an output port is not connected to the input port to which it should be connected, for example, if an operator connects the wrong optical cable, it is possible to minimize the impact on downstream equipment, suppress the impact on the entire optical line, and prevent line accidents. This is because even if an unused port or a port not intended for connection is connected to the wrong port, the attenuation amount of the optical multiplexing attenuator is set to the maximum value and put into a cut-off state, preventing an optical signal from being input to the downstream AWG. In addition, by notifying the optical signal wavelength multiplexing device of information on the output power of the optical signal, if an optical signal with abnormal output power is input to the optical signal wavelength multiplexing device, the optical signal can be cut off, thereby preventing line accidents and detecting equipment failures at the same time.

[0069] As a result, it is possible to provide an optical communication device, a control method for an optical communication device, and a non-transitory computer-readable medium that can prevent incorrect connection between optical signal transmitting equipment and optical signal wavelength multiplexing equipment and minimize the impact on downstream equipment even if an incorrect connection occurs.

[0070] Furthermore, according to the embodiment, if the input power of the input optical signal is abnormal due to a failure in the optical signal transmitting device, the output power of the optical signal is controlled based on the monitoring results of the TAP-PD, thereby minimizing the impact on downstream devices and optical lines.

[0071] Furthermore, according to the embodiment, a general-purpose cable can be used for the optical cable connecting the optical signal transmitting device and the optical signal wavelength multiplexing device, because commercially available adapters and connectors can be used for the input / output ports of the optical cable, and there is no need to prepare special processing or components for the purpose of the embodiment.

[0072] <Features> The features of the embodiment are as follows. The embodiment is characterized in that in an optical communication device comprising an optical signal transmitting device, an optical signal wavelength multiplexing device having a wavelength selective switch (WSS: Wavelength Selective Switch), and an optical cable connecting these devices, the device at the source and destination of the connection is controlled respectively, and the impact of incorrect connections on the entire optical line is reduced by notifying the operator of visual information using an LED and controlling the output power of the optical signal using optical attenuation means inside the device.

[0073] The embodiment prevents incorrect insertion and removal of optical cables by providing visual information using an LED, and at the same time, even if incorrect insertion and removal occurs, the optical signal is blocked by an optical attenuation means inside the device, reducing the input of incorrect optical signals to subsequent optical lines and preventing accidents such as line disconnections due to interference.Furthermore, if the output power of the optical signal output from the device becomes abnormal due to a malfunction of the device, it is characterized by detecting this before it affects other optical lines.

[0074] The embodiment is characterized by being able to respond regardless of the shape of the optical connector of the optical cable or the shape of the optical adapter at the destination by simultaneously controlling both devices (the source device and the destination device) that connect optical signals via an optical cable.

[0075] In the above embodiment, the present disclosure has been described as a hardware configuration, but the present disclosure is not limited to this. The present disclosure can also be realized by having a CPU (Central Processing Unit) execute a computer program to perform the processing of each component.

[0076] In the above embodiments, the program can be stored and supplied to a computer using various types of non-transitory computer-readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (specifically, flexible disks, magnetic tapes, and hard disk drives), magneto-optical recording media (specifically, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / Ws, semiconductor memories (specifically, mask ROMs, PROMs (Programmable ROMs), and EPROMs (Erasable PROMs)), flash ROMs, and RAMs (Random Access Memory). The program may also be supplied to a computer by various types of transitory computer-readable media. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. The transitory computer-readable media can supply the program to a computer via a wired communication path such as an electric wire or optical fiber, or via a wireless communication path.

[0077] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above. Various modifications that can be understood by a person skilled in the art can be made to the configuration and details of the present disclosure within the scope of the disclosure.

[0078] The present disclosure is not limited to the above-described embodiment, and can be modified as appropriate within the scope of the present disclosure.

[0079] A part or all of the above-described embodiments can be described as, but not limited to, the following supplementary notes. (Appendix 1) an optical signal transmitting device; an optical signal wavelength division multiplexing device that inputs the optical signal output from the optical signal transmitting device at an input port; a transmission control device that controls the optical signal transmitting device and the optical signal wavelength multiplexing device; Equipped with The optical signal transmitting device includes: an optical transmission attenuation means for controlling the output power of the optical signal; an output port through which the optical signal having the output power controlled is output; an optical transmission notifying means for notifying the optical signal wavelength division multiplexing equipment of connection information including information on the input port to which the output port should be connected, and for notifying an external party of the optical signal transmitting equipment; The optical signal wavelength multiplexing equipment comprises: the input port for receiving the optical signal output from the output port; an optical multiplexing notification means for notifying the connection information to an external device of the optical signal wavelength multiplexing equipment; an optical multiplexing attenuation means for controlling the input power of the input optical signal, The transmission control device an optical transmission control means for controlling the optical transmission attenuation means based on the output power of the optical signal and a pre-registered output power value; an optical multiplexing control means for controlling the optical multiplexing attenuation means based on the output power of the optical signal and a pre-registered output power value; Optical communication equipment. (Appendix 2) the optical multiplexing control means sets the attenuation amount of the optical multiplexing attenuator means to a maximum value when the output port is not connected to the input port to which it should be connected based on the connection information. 2. The optical communication device of claim 1. (Appendix 3) the optical multiplexing control means sets the attenuation amount of the optical multiplexing attenuator means to a maximum value when the optical wavelength of the optical signal output from the output port differs from a pre-registered optical wavelength based on the connection information. 3. The optical communication device according to claim 1 or 2. (Appendix 4) the optical multiplexing control means sets the attenuation amount of the optical multiplexing attenuator means to a maximum value when the input port to which the output port is to be connected is registered as an unused input port based on the connection information. 4. The optical communication device according to claim 1. (Appendix 5) When the output port and the input port to which the output port is to be connected are connected, the optical transmission control means lights up an output side LED provided at the output port in a first color based on the connection information; the optical multiplexing control means lights up, in the first color, an input side LED provided at the input port to which the output port is to be connected, based on the connection information; 5. The optical communication device according to any one of claims 1 to 4. (Appendix 6) the optical multiplexing control means, when the output port is connected to the input port to be connected based on the connection information and the input power of the optical signal becomes equal to or less than a pre-registered input power value, lights up the input-side LED in a second color; 6. The optical communication device of claim 5. (Appendix 7) the output port and the input port to which the output port is to be connected are connected by an optical cable; 7. The optical communication device according to any one of claims 1 to 6. (Appendix 8) when the output power of the optical signal is greater than a pre-registered output power value, the optical transmission control means controls the optical transmission attenuation means so that the output power of the optical signal is equal to or less than the pre-registered output power value. 8. The optical communication device according to any one of claims 1 to 7. (Appendix 9) when the output power of the optical signal is greater than a pre-registered output power value, the optical multiplexing control means controls the optical multiplexing attenuation means so that the input power of the optical signal becomes equal to or less than the pre-registered input power value. 9. The optical communication device according to any one of claims 1 to 8. (Appendix 10) The connection information is information on whether the output port is in use or unused; Information on whether the output port is registered or unregistered; the output power value of the output port; information on whether the input port to be connected is in use or unused; Registration or non-registration information of the input port to be connected; an input power value of the input port to be connected; further comprising: 10. The optical communication device of claim 1. (Appendix 11) further comprising an optical modulation means for optically modulating the electrical signal with a light source to output an optically modulated signal; 11. The optical communication device of claim 1. (Appendix 12) the optical multiplexing control means sets the attenuation amount of the optical multiplexing attenuating means to a maximum value before the output port is connected to the input port to which it should be connected, based on the connection information; 12. The optical communication device according to any one of claims 1 to 11. (Appendix 13) The optical signal transmitting device Controlling the output power of the optical signal; outputting the optical signal with the output power controlled from an output port; notifying the optical signal wavelength division multiplexing equipment of connection information relating to a connection between the output port of the optical signal transmission equipment and the input port of the optical signal wavelength division multiplexing equipment and notifying an external device of the optical signal transmission equipment; The optical signal wavelength multiplexing equipment, inputting the optical signal output from the output port into the input port; notifying the connection information to an external device of the optical signal wavelength division multiplexing equipment; and controlling the input power of the input optical signal, The transmission control device controlling the output power based on the output power of the optical signal and a pre-registered output power value; and controlling the input power based on the output power of the optical signal and a pre-registered output power value. A method for controlling an optical communication device. (Appendix 14) The optical signal transmitting device Controlling the output power of the optical signal; outputting the optical signal with the output power controlled from an output port; notifying the optical signal wavelength division multiplexing equipment of connection information relating to a connection between the output port of the optical signal transmission equipment and the input port of the optical signal wavelength division multiplexing equipment and notifying the optical signal transmission equipment to an outside of the optical signal transmission equipment; The optical signal wavelength multiplexing equipment, inputting the optical signal output from the output port into the input port; notifying the connection information to an external device of the optical signal wavelength division multiplexing equipment; controlling the input power of the input optical signal; The transmission control device controlling the output power based on the output power of the optical signal and a pre-registered output power value; controlling the input power based on the output power of the optical signal and a pre-registered output power value; A non-transitory computer-readable medium on which a program for causing a computer to execute the program is stored. [Explanation of symbols]

[0080] 10s: Optical communication systems 10t: Optical communication device (transmitter) 10r: Optical communication device (receiving part) 10d: Transmission path 11: Optical signal transmitting equipment 111: Optical transmission attenuation means 112: Output port 113: Optical transmission notification means 114: Optical modulation means 115: Light source 116: Tapped photo detector (TAP-PD: TAP-Photo Detector) 12: Optical signal wavelength multiplexing equipment 121: Optical multiple attenuation means 122: Input port 123: Optical multiplex notification means 126: Tapped photo detector (TAP-PD: TAP-Photo Detector) 127: Array Waveguide Gratings (AWG) 128: Output port 13: Transmission control equipment 131: Optical transmission control means 132: Optical multiplexing control means 16: Optical signal receiving equipment 17: Optical signal wavelength separation equipment 18: Receiving control equipment 19: Relay switching equipment

Claims

1. an optical signal transmitting device; an optical signal wavelength division multiplexing device that inputs the optical signal output from the optical signal transmitting device at an input port; a transmission control device that controls the optical signal transmitting device and the optical signal wavelength multiplexing device; Equipped with The optical signal transmitting device includes: an optical transmission attenuation means for controlling the output power of the optical signal; an output port through which the optical signal having the output power controlled is output; an optical transmission notifying means for notifying the optical signal wavelength division multiplexing equipment of connection information including information on the input port to which the output port should be connected, and for notifying an external party of the optical signal transmitting equipment; The optical signal wavelength multiplexing equipment comprises: the input port for receiving the optical signal output from the output port; an optical multiplexing notification means for notifying the connection information to an external device of the optical signal wavelength multiplexing equipment; an optical multiplexing attenuation means for controlling the input power of the input optical signal, The transmission control device acquiring the connection information including the output power of the optical signal from the optical signal transmitting device; acquiring the connection information including the input power of the optical signal from the optical signal wavelength division multiplexing equipment; an optical transmission control means for controlling the optical transmission attenuation means based on the output power of the optical signal and a pre-registered output power value; an optical multiplexing control means for controlling the optical multiplexing attenuation means based on the output power of the optical signal and a pre-registered output power value; Optical communication equipment.

2. the optical multiplexing control means sets the attenuation amount of the optical multiplexing attenuator means to a maximum value when the output port is not connected to the input port to which it should be connected based on the connection information.

2. The optical communication device according to claim 1.

3. the optical multiplexing control means sets the attenuation amount of the optical multiplexing attenuator means to a maximum value when the optical wavelength of the optical signal output from the output port differs from a pre-registered optical wavelength based on the connection information.

3. The optical communication device according to claim 1.

4. the optical multiplexing control means sets the attenuation amount of the optical multiplexing attenuator means to a maximum value when the input port to which the output port is to be connected is registered as an unused input port based on the connection information.

4. An optical communication device according to claim 1.

5. When the output port and the input port to which the output port is to be connected are connected, the optical transmission control means lights up an output side LED provided at the output port in a first color based on the connection information; the optical multiplexing control means lights up, in the first color, an input side LED provided at the input port to which the output port is to be connected, based on the connection information; 5. An optical communication device according to claim 1.

6. the optical multiplexing control means, when the output port is connected to the input port to be connected based on the connection information and the input power of the optical signal becomes equal to or less than a pre-registered input power value, lights up the input-side LED in a second color; 6. The optical communication device according to claim 5.

7. the output port and the input port to which the output port is to be connected are connected by an optical cable; 7. An optical communication device according to claim 1.

8. when the output power of the optical signal is greater than a pre-registered output power value, the optical transmission control means controls the optical transmission attenuation means so that the output power of the optical signal is equal to or less than the pre-registered output power value.

8. An optical communication device according to claim 1.

9. The optical signal transmitting device Controlling the output power of the optical signal; outputting the optical signal with the output power controlled from an output port; notifying the optical signal wavelength division multiplexing equipment of connection information relating to a connection between the output port of the optical signal transmission equipment and the input port of the optical signal wavelength division multiplexing equipment and notifying an external device of the optical signal transmission equipment; The optical signal wavelength multiplexing equipment, inputting the optical signal output from the output port into the input port; notifying the connection information to an external device of the optical signal wavelength division multiplexing equipment; and controlling the input power of the input optical signal, The transmission control device acquiring the connection information including the output power of the optical signal from the optical signal transmitting device; acquiring the connection information including the input power of the optical signal from the optical signal wavelength division multiplexing equipment; controlling the output power based on the output power of the optical signal and a pre-registered output power value; and controlling the input power based on the output power of the optical signal and a pre-registered output power value. A method for controlling an optical communication device.

10. The optical signal transmitting device Controlling the output power of the optical signal; outputting the optical signal with the output power controlled from an output port; notifying the optical signal wavelength division multiplexing equipment of connection information relating to a connection between the output port of the optical signal transmission equipment and the input port of the optical signal wavelength division multiplexing equipment and notifying the optical signal transmission equipment to an outside of the optical signal transmission equipment; The optical signal wavelength multiplexing equipment, inputting the optical signal output from the output port into the input port; notifying the connection information to an external device of the optical signal wavelength division multiplexing equipment; controlling the input power of the input optical signal; The transmission control device acquiring the connection information including the output power of the optical signal from the optical signal transmitting device; acquiring the connection information including the input power of the optical signal from the optical signal wavelength division multiplexing equipment; controlling the output power based on the output power of the optical signal and a pre-registered output power value; controlling the input power based on the output power of the optical signal and a pre-registered output power value; A program that causes a computer to execute the following.

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