JP5809808B2 - Optical fiber core fusion system and optical fiber core fusion method - Google Patents

Description

  The present invention relates to an optical fiber core fusion system and an optical fiber core fusion method for fusion splicing of optical fiber core wires.

  Conventionally, a fusion splicer is used to connect optical fiber core wires. When the optical fiber core wire is set in the fusion splicer, the fusion splicer aligns the X axes of the core wires, aligns the Y axes, and fuses them by arc discharge to display the estimated connection loss. By the way, the number of cores of the optical fibers to be fusion-bonded is, for example, 1000 in the case of many fibers (for example, using an 8-fiber ribbon), and needs to be fusion-bonded 125 times. The operator visually determines the order of the core wires from the optical cable throttle. Therefore, if misunderstood in the middle of connection, it will be redone from the wrong place and will require a lot of work time.

  For this reason, a technique has been proposed in which light is projected onto both tape cores whose ends are opposed to each other, and the reflected light is observed with a black and white TV camera via a color filter to align the cores. (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 2001-4866

  However, in the above-described prior art, even though the core wires can be aligned, it is not always possible to connect the correct numbers. For example, the erroneous connection between No. 1 and No. 8 when connecting the 8-core ribbons cannot be avoided.

  An object of the present invention is to solve the above-mentioned problems and to provide an optical fiber core fusion system and an optical fiber core fusion method capable of accurately and quickly connecting the corresponding optical fiber cores. It is said.

In order to achieve the above object, according to the first aspect of the present invention, the optical fiber core wire of the first optical cable and the optical fiber core wire of the second optical cable are both fusion spliced at one end. An optical fiber core fusing system having a fusion splicer for performing the processing, corresponding to each core of the first optical cable from the other end of the first optical cable before the fusing operation A first optical signal device for inputting and transmitting optical fiber identification information having a frequency to be transmitted as an optical signal, and the second optical cable from the other end of the second optical cable before fusion work A second optical signal device for inputting and transmitting optical fiber identification information having a frequency corresponding to each optical fiber as an optical signal, and the fusion splicer is to be connected before the fusion operation each heart of the first of each core wire and the second optical cable of the optical cable Based on the light signal received by transmitting, each core identification information performs core information recognition processing to recognize, after this, both the core identification information recognized by said core wire information recognition process matches A core wire matching determination process is performed to determine whether or not , and when both of the core wire identification information match in the core wire matching determination process, the fusion splicing is performed .

According to the first aspect of the present invention, the core identification information having a frequency corresponding to each core of the first optical cable from the other end of the first optical cable by the first optical signal device before the fusion work. was transmitted to input an optical signal, by the second optical signal device, from the other end of the second optical cable, the second optical signal core wire identification information having a frequency corresponding to the core of the optical cable entered by transmitted as, fusion splicer, before fusing work, the optical signal received by transmitting a respective core of the core wire and the second optical cable of the first cable to be connected Based on the core line information recognition process for recognizing each core line identification information, and then determining whether or not both of the core line identification information recognized in the core line information recognition process match Determination processing, and both the core identification information in the core matching determination processing If it matches, performing the fusion splicing.

  A second aspect of the present invention is the optical fiber core wire fusion system according to the first aspect, wherein at least one of the first optical signal device and the second optical signal device measures a loss. It is characterized by having an optical power meter.

  A third aspect of the present invention is the optical fiber core wire fusion system according to the first or second aspect, wherein the optical power meter is selected from the first optical signal device and the second optical signal device. An optical signal device that is connected to the optical signal device having a worker terminal used by a worker at a connection work location, and the optical signal device having the optical power meter transmits a loss measurement result to the worker via the network. It is characterized by transmitting to the terminal.

The invention of claim 4 uses a fusion splicer for fusion splicing the optical fiber core of the first optical cable and the optical fiber core of the second optical cable at one end. An optical fiber core wire fusion method, comprising: identifying a core wire having a frequency corresponding to each core wire of the first optical cable from the other end of the first optical cable by a first optical signal device information was transmitted to input an optical signal, by the second optical signal device, said from the other end of the second optical cable, core identification information having a frequency corresponding to the core of the second optical cable was transmitted to the input as an optical signal, the fusion splicer before fusing work, the connection object of the first optical cable core wire and the light received by transmitting a core wire of the second cable Recognize each core identification information based on the signal. Performs a process, and thereafter, both the core identification information recognized by said core wire information recognition processing, performs a determining cord matching determination processing before fusing work whether match, the core wire match The fusion splicing is performed when both the core identification information match in the determination process .

According to the first aspect of the present invention, the core wire having a frequency corresponding to each core wire of the first optical cable from the other end of the first optical cable by the first optical signal device before the fusion work. entered by transmitting the identification information as an optical signal, by the second optical signal device, from the other end of the second optical cable, the core identification information having a frequency corresponding to the respective cores of the second optical cable The fusion splicer is input as an optical signal and transmitted, and the fusion splicer transmits the core wire of the first optical cable to be connected and the core wire of the second optical cable, and based on the optical signal received at one end. It is determined whether or not the recognized core identification information matches, and if both the core identification information match, a fusion splicing is performed, so that the cores of corresponding optical fibers can be connected accurately and quickly. can do.

  According to invention of Claim 2, the loss of the optical fiber containing a connection location can be actually measured with an optical power meter.

  According to the invention of claim 3, the loss measurement results can be collected by the operator terminal.

According to the invention of claim 4, by the first optical signal device, the core identification information having the frequency corresponding to each core of the first optical cable is used as the optical signal from the other end of the first optical cable. The second optical signal device inputs the optical fiber identification information having a frequency corresponding to each optical fiber of the second optical cable from the other end of the second optical cable as an optical signal. The fusion splicer transmits the cores of the first optical cable and the second optical cable to be connected, and both cores are recognized based on the optical signal received at one end. It is determined whether or not the identification information matches before the fusion work , and if both the core identification information match, the fusion connection is made , so that the cores of the corresponding optical fibers are connected accurately and quickly. be able to.

It is explanatory drawing for demonstrating the structure of the optical fiber core wire melt | fusion system by one Embodiment of this invention. It is a perspective view which shows the structure of the optical signal apparatus of the optical fiber core wire fusion system. It is a block diagram which shows the structure of the optical signal apparatus of the optical fiber core wire fusion system. It is a perspective view which shows the structure of the optical signal apparatus of the optical fiber core wire fusion system. It is a block diagram which shows the structure of the optical signal apparatus of the optical fiber core wire fusion system. It is explanatory drawing for demonstrating the structure of the optical transmission part of the optical signal apparatus. It is a block diagram which shows the structure of the fusion splicer of the optical fiber core wire fusion system. It is explanatory drawing for demonstrating the structure of the optical receiver of the fusion splicer. It is explanatory drawing for demonstrating the structure and function of the optical receiver. It is explanatory drawing for demonstrating the structure and function of the optical receiver. It is a processing procedure figure for demonstrating operation | movement of the fusion splicer. It is a processing procedure figure for demonstrating operation | movement of the optical signal apparatus. It is a processing procedure figure for demonstrating operation | movement of the operator terminal of the same optical fiber core wire fusion system.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory diagram for explaining a configuration of an optical fiber core fusion system according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a configuration of an optical signal device of the optical fiber core fusion system. 3 is a block diagram showing the configuration of the optical signal device of the optical fiber core fusion system, FIG. 4 is a perspective view showing the configuration of the optical signal device of the optical fiber core fusion system, and FIG. FIG. 6 is a block diagram showing a configuration of an optical signal device of the optical fiber core fusion system, FIG. 6 is an explanatory diagram for explaining a configuration of an optical transmission unit of the optical signal device, and FIG. 7 is an optical fiber. FIG. 8 is an explanatory diagram for explaining the configuration of the optical receiver of the fusion splicer, and FIGS. 9 and 10 are the optical receivers. FIG. 11 is a diagram for explaining the operation of the fusion splicer. FIG. 12 is a processing procedure diagram for explaining the operation of the optical signal apparatus, and FIG. 13 is a processing procedure for explaining the operation of the operator terminal of the optical fiber fusion bonding system. It is a procedure figure.

  As shown in FIG. 1 (a) and FIG. 1 (b), the optical fiber core wire fusion system 1 of this embodiment includes an optical fiber core wire of an optical cable 4a from a communication station 2a and a communication station 2b. A fusion splicer 6 for fusion splicing the optical fiber core of the optical cable 4b, and the core number information (core identification information) corresponding to the optical fiber of the optical cable 4a at the communication station 2a. An optical signal device 9a, an optical signal device 9b for inputting core number information corresponding to the optical fiber of the optical cable 4b in the communication station 2b, and the optical signal devices 9a and 9b are connected via the network 12, and Includes a worker terminal 11 used at a connection work location.

  In this embodiment, the optical cable 4a (4b) has, for example, a structure in which a plurality of eight-core tape cores 5a (5b) are accommodated in a plurality of throttles, and the fusion splicer 6 has eight cores. Connection is made in units of tape cores 5a (5b), and the optical signal devices 9a and 9b are also compatible with 8 cores. In addition, the Aa (Ab) part of Fig.1 (a) and the corresponding Ba (Bb) part of FIG.1 (b) have shown the optical tray 7a (7b). Further, the Ca (Cb) portion in FIG. 1B shows the arrangement area of the connection terminals of the optical tray 7a (7b).

Connecting the optical signal device 9a is a communication station 2a optical intermediate distribution frame (hereinafter, light IDF (Intermediate Distribution Frame) that.) Connector 3a in the optical tray 7a constituting the _{8a 1,} 8a 2, ..., via the 8a ₈ Is done. Optical signal device 9b also, connector _{8b 1,} 8b 2, the optical trays 7b constituting the optical IDF3b the communication station 2b ..., are connected via 8b _8.

Further, the optical signal device 9a, as shown in FIGS. 2 and 3, connecting portions ₁₄ 1, ₁₄ 2, and has a ... 14 _8, a control unit 16a, and the optical transmission unit 18a, a communication unit 19a, an operation Part 21a. Optical signal device 9b, as in the optical signal device 9a, as shown in FIGS. 4 and 5, connector ₁₅ 1, ₁₅ 2, and has a ... 15 _8, a control unit 16b, and the optical power meter 17, The optical transmission part 18b, the communication part 19b, and the operation part 21b are provided. In this embodiment, only the optical signal device 9b used in one communication station 2b is provided with the optical power meter 17, but both optical signal devices 9a and 9b may be provided.

  The control units 16a and 16b of the optical signal devices 9a and 9b include a CPU (Central Processing Unit) and the like, a main control unit that controls each component according to a predetermined program, and a semiconductor memory such as ROM and RAM, and various controls. And a storage unit for storing programs and data.

Optical transmission unit 18a, 18b, as shown in FIG. 6, the input unit _{22 1,} 22 2, ..., 22 _8, the modulation circuit _{23 1,} 23 2, ..., 23 _8, laser diode ₂₄ 1, 24 ₂ , ..., 24 _8, a power supply circuit 25, a diode _{26 1,} 26 2, ..., has a 26 _8, the output unit _{27 1,} 27 2, ..., and 27 _8. Input unit _{22 1,} 22 2, ..., the 22 _8, an analog signal corresponding to the core wire numbers (electric signal) is input, the laser diode _{24 1,} 24 2 as a light emitting element, ... are supplied to 24 ₈ The The frequency of the analog signal is, for example, (1: 10 kHz, 2: 20 kHz, 3: 30 kHz, 4: 40 kHz, 5: 50 kHz, 6: 60 kHz, 7: 70 kHz, 8: 80 kHz) Are associated with each other. Modulation circuit _{23 1,} 23 2, ..., in 23 _8, direct IM (Intensity Modulation) modulating the direct strength method is used. The communication units 19a and 19b of the optical signal devices 9a and 9b are connected to the network 12 and perform data communication according to a predetermined protocol. The operation units 21a and 21b of the optical signal devices 9a and 9b include a power switch and the like.

  As shown in FIG. 7, the fusion splicer 6 includes a control unit 29, a light receiving unit 31, an operation unit 32, a display unit 33, an imaging unit 34, an image processing unit 35, an actuator 36, A heat source control unit 37 and a discharge electrode 38 are provided.

  The control unit 29 includes a CPU and the like, and includes a main control unit that controls each component configured according to a predetermined program, and a storage unit that includes a semiconductor memory such as a ROM and a RAM and stores various control programs and data. Yes. In the fusion splicer 6 of this embodiment, in addition to the processing related to the original fusion splicing, mode setting processing, core information recognition processing, core information display control processing, core matching determination processing, and the like are executed. Is done.

  The fusion splicer 6 sets the processing mode in the optical core confirmation mode, the fusion work mode, or the like according to the input from the operation unit 32 in the mode setting process, for example. The fusion splicer 6 recognizes the core number of each core of the set optical fiber based on the reception information from the optical receiver 31 in the core information recognition process. Thus, the core number is read before fusion. The fusion splicer 6 displays the recognized core number (No. 1: 01, No. 2: 02,..., No. 08: 08), message information, and the like on the display unit 33 in the core information display control process. . The fusion splicer 6 determines whether or not the numbers of the corresponding core wires of the optical cables 4a and 4b to be connected match based on the recognized core number in the core wire matching determination process.

Optical receiving unit 31, as shown in FIG. 8, the input unit _{41 1,} 41 2, ..., 41 _8, the photodiode _{42 1,} 42 2, ..., 42 _8, preamplifier ₄₃ 1, ₄₃ 2, ..., 43 _8, low-pass filter _{44 1,} 44 2, ..., 44 _8, amplifier _{45 1,} 45 2, ..., 45 _8, the output unit _{46 1,} 46 2, ..., and a 46 ₈ Yes. Photodiode _{42 1,} 42 2, ..., 42 _8, as shown in FIGS. 9 and 10, through a 45 ° deflection prism 48, the core wire of the ribbon 5a of the corresponding optical fiber (5b) 47 receiving the optical signal, the output unit _{46 1,} 46 2, ... from, from 46 _8, the analog signal having a frequency corresponding to the core wire number is output.

  The worker terminal 11 is composed of, for example, a movable personal computer having a wireless communication function, and controls a control unit according to a predetermined program, a storage unit that stores various control programs and data, a predetermined unit A communication unit for performing data communication according to the protocol, an operation unit including a keyboard, and a display unit including a liquid crystal display or the like. The said control part consists of CPU etc. and controls each structure part according to the predetermined | prescribed control program memorize | stored in the said memory | storage part.

  In the worker terminal 11, an optical power meter switching command transmission process, a loss measurement result acquisition process, and the like are executed. In the optical power meter switching command transmission process, the worker terminal 11 transmits a switching command for switching to the optical power meter 17 by the optical signal device 9b to the optical signal device 9b when there is a switching request operation via the operation unit. . When the worker terminal 11 receives the loss measurement result from the optical signal device 9b in the loss measurement result acquisition process, the worker terminal 11 stores the loss measurement result in the storage unit. The storage unit of the worker terminal 11 includes a ROM, a RAM, an HD (hard disk), an HDD to which a CD-ROM or the like is mounted, a CD-ROM drive, or the like.

  The network 12 may include a mobile communication network. The network 12 may include a network using an FTTH (Fiber To The Home) line, an ADSL (Asymmetric Digital Subscriber Line), etc., in addition to a network using a dedicated communication path.

Next, with reference to FIG. 11 thru | or FIG. 13, operation | movement of the optical fiber core wire fusion system 1 is demonstrated. In the connection work place, first, the outer cover of the optical cable to be worked is peeled, the optical fiber is cleaned using alcohol or the like, and cut to a specified length. Next, the optical fiber is set in the fusion splicer 6 and switched to the optical fiber core confirmation mode. Further, in the communication stations 2a and 2b, the optical signal device 9a and the optical tray 7a are connected via connectors 8a ₁ , 8a ₂ ,..., 8a ₈ , and the optical signal device 9b and the optical tray 7b are connected to the connector 8b. ₁ , 8 b ₂ ,..., 8 b ₈ are connected. From the optical transmission unit 18a of the optical signal device 9a and the optical transmission unit 18b of the optical signal device 9b, analog signals corresponding to the core number are output in all the cores of the tape cores 5a and 5b.

  Next, the operation of the fusion splicer 6 will be described. When the optical fiber is set in the fusion splicer 6 (step SA11 (FIG. 11)) and the optical fiber core confirmation mode is set (step SA12), the core wire number is read (step SA13) and displayed on the display unit 33. (Step SA14). In step SA15, the fusion splicer 6 determines whether or not the core numbers match, and if they match and is in the correct number order, the process proceeds to step SA16, and if they do not match, step SA17. Thus, the display indicating that the core numbers do not match is displayed, and the process returns to step SA11. In step SA16, the fusion splicer 6 changes the processing mode to the fusion work mode, fuses the optical fibers, and displays the estimated loss in step SA18. Next, in step SA19, the fusion splicer 6 returns to step SA11 if there is a next connection, and ends the process if there is no next connection.

  When the optical connector is connected (step SB11 (FIG. 12)), the optical signal device 9a (9b) transmits the corresponding core number information (step SB12). In step SB13, when the optical signal device 9b receives a switching command from the worker terminal 11 via the communication unit 19b, the optical signal device 9b is switched to the optical power meter 17 by the control of the control unit 16b (step SB14), and the optical power meter 17 is lost. Is measured (step SB15), and the measurement result is transmitted to the worker terminal 11 via the communication unit 19b (step SB16). Next, in step SB17, the optical signal device 9a (9b) returns to step SB11 if there is a next connection, and ends the process if there is no next connection.

  When there is a switching request operation (step SC11 (FIG. 13)), the worker terminal 11 transmits a switching command to the optical signal device 9b (step SC12). When the worker terminal 11 receives the measurement result (step SC13), the worker terminal 11 stores the measurement result (step SC14).

  Thus, according to the configuration of this embodiment, the fusion splicer 6 determines whether or not both core numbers match based on the core information transmitted from the optical signal devices 9a and 9b. The cores of corresponding optical fibers can be connected accurately and quickly.

  The embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the gist of the present invention. Is included in the present invention. For example, in the above-described embodiment, in the fusion splicer 6, the mode setting process, the core line information recognition process, the core line information display control process, the core line match determination process, and the like are performed by the control unit. Alternatively, a part or the whole may be performed using dedicated hardware, and the other part may be processed by executing a corresponding program. In addition, each CPU may execute, or for example, a single CPU may execute.

  It can be applied to optical cables for particularly important lines such as OPGW in addition to dedicated lines.

1 Optical fiber fusion system 4a Optical cable (first optical cable)
4b Optical cable (second optical cable)
6 Fusion splicer 9a Optical signal device (first optical signal device)
9b Optical signal device (second optical signal device)
11 Worker terminal 12 Network 17 Optical power meter

Claims (4)

An optical fiber core wire fusion splicer comprising a fusion splicer for fusion splicing the optical fiber core wire of the first optical cable and the optical fiber core wire of the second optical cable at one end. A system,
Before the fusing operation, a first wire for inputting and transmitting optical fiber identification information having a frequency corresponding to each optical fiber of the first optical cable from the other end of the first optical cable. Before the fusion work, optical fiber identification information having a frequency corresponding to each optical fiber of the second optical cable is input as an optical signal from the other end of the second optical cable. A second optical signal device for transmission,
The fusion splicer transmits each core wire of the first optical cable to be connected and each core wire of the second optical cable before the fusion work , based on the optical signal received and received from each core wire. Performing a cardiac information recognition process for recognizing identification information, and thereafter performing a cardiac match determination process for determining whether or not both of the cardiac identification information recognized in the cardiac information recognition process match, When both the core wire identification information match in the core wire match determination process, the fusion splicing is performed.
An optical fiber core fusing system characterized by the above.   2. The optical fiber core fusion according to claim 1, wherein at least one of the first optical signal device and the second optical signal device includes an optical power meter for measuring a loss. Arrival system.   Of the first optical signal device and the second optical signal device, a worker terminal connected to the optical signal device having the optical power meter via a network and used by a worker at a connection work location. The optical signal apparatus having the optical power meter transmits a loss measurement result to the worker terminal via the network. Optical fiber core fusion using a fusion splicer for fusion splicing the optical fiber core of the first optical cable and the optical fiber core of the second optical cable at one end. A method,
From the other end of the first optical cable, the first optical signal device inputs and transmits optical fiber identification information having a frequency corresponding to each optical fiber of the first optical cable as an optical signal , By means of the optical signal device of 2, the optical fiber identification information having a frequency corresponding to each optical fiber of the second optical cable is input and transmitted as an optical signal from the other end of the second optical cable,
Before the fusion splicing operation , the fusion splicer transmits each core wire identification information on the basis of the optical signal received by transmitting the core wire of the first optical cable and the core wire of the second optical cable to be connected. was subjected to core information recognition processing to recognize, and thereafter, both the core identification information recognized by said core wire information recognition processing, the matching determining whether cord matching determination processing before fusing work When both the core wire identification information match in the core wire match determination process, the fusion splicing is performed.
An optical fiber core wire fusion method.

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