KR101590321B1 - Optical switch board expansion system for monitoring of optical line - Google Patents

Optical switch board expansion system for monitoring of optical line Download PDF

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Publication number
KR101590321B1
KR101590321B1 KR1020150064000A KR20150064000A KR101590321B1 KR 101590321 B1 KR101590321 B1 KR 101590321B1 KR 1020150064000 A KR1020150064000 A KR 1020150064000A KR 20150064000 A KR20150064000 A KR 20150064000A KR 101590321 B1 KR101590321 B1 KR 101590321B1
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KR
South Korea
Prior art keywords
optical
switch
optical switch
monitoring
filter
Prior art date
Application number
KR1020150064000A
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Korean (ko)
Inventor
오성근
권기덕
Original Assignee
주식회사 케이티엔티
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Priority to KR1020150064000A priority Critical patent/KR101590321B1/en
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Publication of KR101590321B1 publication Critical patent/KR101590321B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
    • H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/07—Monitoring an optical transmission system using a supervisory signal

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Communication System (AREA)

Abstract

The present invention relates to an optical switch board extension system for monitoring an optical line and, particularly, to a new concept technology which makes a system, for monitoring whether there is an abnormality in an optical line, increase a monitoring distance, at the same time conveniently extending a connection part of an optical cable as demanded by a user, thereby drastically enhancing a monitoring effect. A monitoring filter applied to a conventionally disclosed optical line monitoring system causes problems of reducing the monitoring distance because of an excessive loss caused by excessive accesses as three optical connectors access as a whole, and occupying an excessive area as well as having many spatial restrictions in installing a large number of monitoring filter boards. The present invention, to solve the problems, provides a technology for embedding the monitoring filter in an individual switch card and fusing optical core fiber of each monitoring filter, installed within the individual switch card, with optical core fiber with multiple lines connected to an optical switch to reduce access points of the optical connector.

Description

Technical Field [0001] The present invention relates to an optical switch board expansion system for monitoring a large-

The present invention relates to a new concept technology that can easily extend the connection portion of an optical cable in a system for monitoring the presence or absence of an optical path in accordance with a user's demand,

There is a growing interest in a so-called passive optical network (PON) subscriber line system in which an optical fiber is directly connected to an optical subscriber terminal to smoothly provide various subscribers with various broadband multimedia services that are rapidly increasing in the information society.

The passive optical network (PON) subscriber network comprises a service providing device for providing information to be served to the optical network terminal through a predetermined communication network, a passive optical network for connecting the optical network terminal, which is a service user, Refers to a network that distributes audio data over an optical signal to each subscriber terminal.

In addition, WDM-PON (Wavelength Division Multiplexing-Passive Optical Network) subscriber network provides high-speed broadband communication service using the unique wavelength assigned to each subscriber. The communication service or the communication capacity of the subscriber can easily be accommodated and the number of subscribers can be easily increased by adding a unique wavelength to be given to a new subscriber.

On the other hand, in order to provide smooth service as in all communication systems, it is required to monitor the communication line for performing the information transmission and to perform the maintenance service for the communication line where the failure occurs. In particular, optical communication systems are no exception. That is, it is required to provide a maintenance service such as partial replacement of the optical line when a broken line of the optical line occurs.

At present, an optical time domain reflectometer (OTDR) is generally used to monitor an optical line in an optical communication system.

The optical pulse tester provides a monitoring signal to an optical line to be monitored and receives an optical signal scattered in a backward direction through the optical line. The optical pulse tester detects a point of the optical fiber in which the pulse optical signal is reflected through the received time And the state of the light ray at the point of the retroreflected through the output of the received retroreflective pulse light signal may be grasped.

In monitoring the above-mentioned optical line, in particular, when monitoring an optical fiber line in operation as shown in FIG. 6, a separate monitoring wavelength should be used for monitoring without interruption of the communication service without affecting the communication wavelength. It should not interfere with communication between devices. Therefore, in order to monitor the operation optical fiber, a monitoring filter for inputting or separating the monitoring wavelength and a terminal filter for blocking only the monitoring wavelength are connected to the beginning and the end of the optical fiber, respectively.

However, since the user's demand can not be predicted in constructing the optical line surveillance system like this, the number of connection terminals to which the optical cable can be connected is inevitably incurred. In addition, it was difficult to expand the optical cable connection terminal in addition to the optical line monitoring system once installed, and it was pointed out that the lack of the installed terminal board or the over-supply of the installed terminal board was not economical, .

As a method for solving such a problem, Patent Registration No. 893752 filed by the applicant of the present invention, which is a registered trademark of the patent application, an optical switch module applicable to the name / optical line monitoring system, is disclosed.

As shown in FIGS. 7 to 8, the monitoring filter 1 according to the present invention is connected to the optical switch half port 2 connected to the monitoring device, the optical transmission device port 3 connected to the optical transmission device, Since the optical fiber ports 4 are provided, connection of three optical connectors is performed as a whole, thereby causing a problem that the monitoring distance is excessively reduced due to excessive connection.

In addition, since the number of the monitoring filter groups 6 corresponding to the number of ports of the individual switch cards 5 provided in the optical switch group is separately provided, the number of the monitoring filter groups is large, Resulting in a problem of occupying an excessively large occupied area.

SUMMARY OF THE INVENTION The present invention provides a technique for incorporating a surveillance filter on an individual switch card as means for solving the above problems.

The present invention also contemplates a technique for reducing the number of connection points of optical connectors by fusing the optical fiber of each surveillance filter installed in the individual switch card and the optical fiber of multiple lines connected to the optical switch.

According to the present invention, the connection point of the optical connector connected to the surveillance filter is reduced to two places, thereby reducing the loss of the surveillance wavelength, thereby providing an effect of increasing the surveillance distance.

In addition, since the monitoring filter is built in the individual switch card, the present invention can reduce the excessive occupied area occupied by the monitoring filter module, Provides a possible effect.

1 is a conceptual diagram of an optical switch half expansion system to which the present invention is applied
2 is a block diagram of a switch card according to the present invention
3 is a conceptual diagram of an optical switch half expansion system according to another embodiment of the present invention.
4 is a configuration diagram of an individual switch card of the optical switch half expansion system of another embodiment of the present invention
5 is a conceptual diagram of an optical switch half expansion system according to another embodiment of the present invention.
6 is a block diagram schematically showing a conventional optical line monitoring system
7 is a conceptual diagram of an optical switch module applied to a conventional optical line monitoring system
Fig. 8 is a block diagram of a conventional surveillance filter

Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

The optical switch module 100 according to the present invention includes a service provider corresponding to a transmitter and an optical cable connecting between subscribers corresponding to the receiver, A connection terminal is provided so that a plurality of optical cables to be monitored can be connected and a monitoring signal generated through the optical pulse tester is transmitted to a designated optical cable of a subscriber.

In this case, the number of the individual switch cards 130 to which the optical cables can be connected is variable, so that it is easy to additionally mount and remove, and the positions of the plurality of connected optical cables can be tracked by the output signal of the optical switch.

1, the optical switch module 100 includes a base substrate 110 having a plurality of slots, a common switch card 120 inserted into a slot of the base substrate 110, And a plurality of individual switch cards 130. Each of the common switch cards 120 and the individual switch cards 130 receives light for transmitting an electrical control signal to the output lines, And a switch 131 are included.

The individual switch card 130 of the present invention is further combined with a core technology in which a monitoring filter 132 is embedded. The monitoring filter 132 is a device for combining or separating a monitoring signal and a communication signal to be.

As shown in FIG. 2, the individual switch card 130 includes a plurality of monitoring filters 132 therein, and each of the monitoring filters 132 includes a first optical fiber 133 connected to one side thereof, And the second optical fiber 133a of the multiple circuits connected to the individual switch card common port 134 connected to the first optical fiber 131 and the second optical fiber 133 are integrally fused together to form the fused portion 135.

Therefore, the surveillance signal input through the common switch card common port 134 is smoothly inputted to the surveillance filter 132, and in addition, the surveillance filter 132 is connected to the surveillance filter 132 using a separate optical connector In the end, by reducing the number of connection points of the optical connector to two, the loss of the monitoring wavelength is reduced and the monitoring distance is increased, thereby doubling the monitoring effect of the optical line.

The third and fourth optical fibers 133b and 133c connected to both sides of the monitoring filter 132 are connected to the optical transmitter port 136 and the optical cable port 137, It is possible to smoothly perform the function of merging or separating the supervisory signal and the communication signal while maintaining the integrated state of the card 130. [

Therefore, since the surveillance filter 132 is embedded in the individual switch card 130, the surveillance filter 132 is not limited to the space required for installing a separate surveillance filter unit, It has a special effect of reducing the footprint and making the rack compact.

The common switch card 120 is configured to select each individual switch card 130 itself in delivering the eight output signals by the optical switch 121, ) Can be mounted and removed freely.

The individual switch card 130 is capable of transmitting eight selective output signals by the optical switch 131 to each optical cable port 137.

That is, by the optical switches 121 and 131 capable of expressing the eight output values, the common switch card 120 can select the individual switch cards 130 within a maximum of eight ranges, The maximum number of optical cables that can be connected to the optical switch module 100 can be up to 64. In this case, However, it is preferable that additional installation of the individual switch cards 130 should be performed one by one when necessary.

In the meantime, in the case of adding a surveillance port in the surveillance node, a separate separate extended optical switch 300 is used as shown in FIG. 3, and the extended optical switch 300 is used as a remote optical switch But may be embodied in other forms of use as well.

The present invention according to another embodiment of the present invention includes a base board 210 having a single or multiple slots and a common switch card 220 inserted in a slot of the base board 210, An optical switch 200 including an optical switch for transmitting an electrical control signal to each of the divided output lines according to a signal;

A base board 310 having a single or a plurality of slots and an individual switch card 330 inserted into a slot of the base board 310 and electrically connected to each of the divided output lines in accordance with an input control signal A plurality of extended optical switch modules 300 including an optical switch 331 for transmitting control signals;
And a common controller 400 for collectively controlling the optical switch module 200 and the plurality of extended optical switch modules 300;

The individual switch card 330 has a built-in supervisory filter 332. The supervisory filter 332 includes a first optical fiber 333 connected to one side of the supervisory filter 332 and a common switch card 333 connected to the optical switch 331 The second optical fiber 333a of the multiple circuits connected to the port 334 is integrally fused with the third and fourth optical fiber 333b connected to both sides of the monitoring filter 332 333c are connected to the optical transmission device port 336 and the optical cable port 337, respectively.

Here, the number of ports of the optical switch module 200 determines the number of the extended optical switch modules 300, and the number of ports of the extended optical switch module 300 determines the number of ports to be monitored.

That is, since the number of ports of the optical switch module 200 is eight, the number of the extended optical switch modules 300 is eight, and the number of ports of the extended optical switch module 300 is twenty four. 24 ports can be applied.

5, the separate optical switch 200 and the extended optical switch 300 are provided with separate logic controllers 240 and 340, and the logic controllers 240 and 340, respectively, To be remotely controlled in a batch by using one main controller 500 at another point or area.

The present invention according to another embodiment of the present invention includes a base board 210 having a single or multiple slots and a common switch card 220 inserted in a slot of the base board 210, An optical switch 200 including an optical switch for transmitting an electrical control signal to each of the divided output lines according to a signal and including a logic controller 240 connected to the base substrate 210;

A base board 310 having a single or a plurality of slots and an individual switch card 330 inserted into a slot of the base board 310 and electrically connected to each of the divided output lines in accordance with an input control signal A plurality of optical switch modules 300 including an optical switch 331 for transmitting a control signal and including a logic controller 340 connected to the base substrate 310;

And a main controller 500 for collectively controlling the logic controllers 240 and 340 provided in the optical switch module 200 and the plurality of extended optical switch modules 300, respectively.

The individual switch card 330 has a built-in supervisory filter 332. The supervisory filter 332 includes a first optical fiber 333 connected to one side of the supervisory filter 332 and a common switch card 333 connected to the optical switch 331 The second optical fiber 333a of the multiple circuits connected to the port 334 is integrally fused with the third and fourth optical fiber 333b connected to both sides of the monitoring filter 332 333c are connected to the optical transmission device port 336 and the optical cable port 337, respectively.

Accordingly, the present invention provides convenience in use in which the optical switch module 200 and the extended optical switch module 300 can be easily and remotely controlled remotely by using one main controller 500 at a remote location.

1, 132, 332: Surveillance filter 2: Optical switch Half-port
3, 136, 336: optical transmission device ports 4, 137, 337: optical cable ports
5, 130, 330: Individual switch card 6: Surveillance filter board
100, 200: optical switch module 110, 210, 310: base substrate
120, 220: common switch card 131, 331: optical switch
133, 333: first optical core wire 135, 335:
133a, 333a: second optical fiber line 133b, 333b: third optical fiber line
133c and 333c: Fourth optical fiber line 240, 340: Logic controller
300: Extended optical switch Half 400: Common controller
500: Main controller

Claims (5)

A common switch card (120) and a plurality of individual switch cards (130) inserted into slots of the base board (110), and the common switch card 120 and an individual switch card 130 are provided with an optical switch 100 including an optical switch 131 for transmitting an electrical control signal to each of the divided output lines according to an input control signal,
The individual switch card 130 has a built-in supervisory filter 132. The supervisory filter 132 has a first optical fiber 133 connected to one side of the supervisory filter 132 and an individual switch card common to the optical switch 131 The second optical fiber 133a of the multiple circuits connected to the port 134 is formed with a fused portion 135 integrally fused and the third and fourth optical fiber 133b connected to both sides of the monitoring filter 132 133c are connected to the optical transmission device port 136 and the optical cable port 137, respectively;
The common switch card 120 can select any one of the plurality of individual switch cards 130 based on the output signal of the built-in optical switch, And the individual switch card (130) can be additionally mounted and removed if necessary. The optical switch module according to claim 1, system.
delete And a common switch card 220 inserted into a slot of the base board 210. The control board 210 is connected to each of the divided output lines An optical switch 200 including an optical switch for transmitting an electrical control signal to the optical switch 200;
A base board 310 having a single or a plurality of slots and an individual switch card 330 inserted into a slot of the base board 310 and electrically connected to each of the divided output lines in accordance with an input control signal A plurality of extended optical switch modules 300 including an optical switch 331 for transmitting control signals;
And a common controller 400 for collectively controlling the optical switch module 200 and the plurality of extended optical switch modules 300;
The individual switch card 330 has a built-in supervisory filter 332. The supervisory filter 332 includes a first optical fiber 333 connected to one side of the supervisory filter 332 and a common switch card 333 connected to the optical switch 331 The second optical fiber 333a of the multiple circuits connected to the port 334 is integrally fused with the third and fourth optical fiber 333b connected to both sides of the monitoring filter 332 333c are respectively connected to the optical transmission device port 336 and the optical cable port 337;
Wherein the number of ports of the optical switch module 200 determines the number of the extended optical switch modules 300 and the number of ports of the extended optical switch module 300 determines the number of ports to be monitored. Optical Switch Semi - Expansion System.
And a common switch card 220 inserted into a slot of the base board 210. The control board 210 is connected to each of the divided output lines An optical switch 200 including an optical switch for transmitting an electrical control signal to the base substrate 210 and including a logic controller 240 connected to the base substrate 210;
A base board 310 having a single or a plurality of slots and an individual switch card 330 inserted into a slot of the base board 310 and electrically connected to each of the divided output lines in accordance with an input control signal A plurality of optical switch modules 300 including an optical switch 331 for transmitting a control signal and including a logic controller 340 connected to the base substrate 310;
And a main controller 500 for collectively controlling the logic controllers 240 and 340 provided in the optical switch module 200 and the plurality of extended optical switch modules 300, respectively.
The individual switch card 330 has a built-in supervisory filter 332. The supervisory filter 332 includes a first optical fiber 333 connected to one side of the supervisory filter 332 and a common switch card 333 connected to the optical switch 331 The second optical fiber 333a of the multiple circuits connected to the port 334 is integrally fused with the third and fourth optical fiber 333b connected to both sides of the monitoring filter 332 333c are respectively connected to the optical transmission device port 336 and the optical cable port 337;
Wherein the number of ports of the optical switch module 200 determines the number of the extended optical switch modules 300 and the number of ports of the extended optical switch module 300 determines the number of ports to be monitored. Optical Switch Semi - Expansion System. delete
KR1020150064000A 2015-05-07 2015-05-07 Optical switch board expansion system for monitoring of optical line KR101590321B1 (en)

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KR1020150064000A KR101590321B1 (en) 2015-05-07 2015-05-07 Optical switch board expansion system for monitoring of optical line

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Application Number Priority Date Filing Date Title
KR1020150064000A KR101590321B1 (en) 2015-05-07 2015-05-07 Optical switch board expansion system for monitoring of optical line

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11142666A (en) * 1997-11-13 1999-05-28 Fujikura Ltd Optical multiplexer demultiplexer
KR200200992Y1 (en) * 2000-04-04 2000-11-01 김현숙 Rice box to prevent the harmful insect
KR100893752B1 (en) * 2008-04-11 2009-04-17 주식회사 케이티엔티 Terminal board using monitoring system of fiber line

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11142666A (en) * 1997-11-13 1999-05-28 Fujikura Ltd Optical multiplexer demultiplexer
KR200200992Y1 (en) * 2000-04-04 2000-11-01 김현숙 Rice box to prevent the harmful insect
KR100893752B1 (en) * 2008-04-11 2009-04-17 주식회사 케이티엔티 Terminal board using monitoring system of fiber line

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