KR20090087777A - Optical signal quality measurement system using optical distribution device and method - Google Patents

Abstract

The present invention relates to an optical signal quality measuring system and method using an optical splitting apparatus. In an optical splitting apparatus for distributing a plurality of input optical signals, the present invention measures a magnitude of an electrical signal with respect to each split optical signal. Optical signal quality measurement system that displays and transmits the magnitude of the electric signal measured by the optical distribution device to the access network control computer through the communication network so that the administrator can check the size and quality of the optical signal remotely by using the access network control computer. And to a method thereof.

Description

Optical signal quality measurement system using optical splitter and its method {SYSTEM FOR MEASURING OPTICAL SIGNAL QUALITY USING OPTICAL DISTRIBUTION DEVICE AND METHOD THEREOF}

The present invention relates to an optical signal quality measuring system and method using an optical splitter, and more particularly, to measure the size of each split optical signal in an optical splitter for distributing a plurality of input optical signals and display the value thereof. An optical signal quality measuring system and method for measuring the quality of a corresponding optical signal according to the magnitude of an optical signal at a remote location using a distribution device.

An optical communication system is largely composed of a transmitter, an information channel, and a receiver. The transmitter modulates the information to be transmitted and transmits it to the receiver in the form of light through the information channel. To this end, the transmitter converts a message source such as voice, video, and data into an electrical signal. Thereafter, the transmitting end converts the converted electrical signal into an optical signal and then loads it on a carrier and transmits the information to the receiving end through an information channel. An information channel is a transmission path composed of optical fibers. In a wired optical communication system, an optical cable serves as an information channel and transmits an optical signal of an infrared region having a specific wavelength. The receiving end converts the optical signal transmitted through the information channel into an electrical signal in the photodetector, and extracts the original signal by removing noise from the electrical signal.

Recently, in the optical communication system, an optical distribution device for distributing optical signals transmitted from a transmitting end to a plurality of receiving ends due to the large capacity of a transmission network is used. The optical distribution device includes a plurality of optical connection terminals (eg, optical adapters, optical jumper cords, and the like). An optical cable connected to a transmitting end is connected to an input end of each optical connection terminal, and an optical cable connected to a receiving end is connected to an output end.

In such a conventional optical distribution device, since only a function of distributing an optical signal is performed, the optical signal quality cannot be measured by itself. Therefore, in order to measure the quality of the optical signal transmitted by the conventional optical splitter, an optical power meter is connected to each optical connection terminal of the optical splitter to measure the intensity of the optical signal. However, in this case, there is a problem in that the optical power meter for measuring the optical signal strength in the optical distribution device has to be connected to each optical connection terminal, and the cost of installing the optical power meter is added.

In addition, the conventional optical distribution device has a disadvantage in that the optical signal is connected to the optical connection terminal to measure the intensity of the optical signal, so that the quality of the optical signal can not be checked and controlled and managed remotely.

Accordingly, there is a demand for a method for more easily measuring optical signals transmitted and received in an optical communication system and efficiently managing an optical distribution device at a remote location.

Therefore, the present invention was devised to solve the above-mentioned conventional problems, and by transmitting the magnitude value of the optical signal measured at the optical connection terminal unit of the optical distribution device to a connection network control computer connected to a remote site, the administrator controls the access network. The present invention provides an optical signal quality measuring system and method using an optical splitter that enables a computer to measure the quality of an optical signal at a remote location.

The optical signal quality measuring system according to the present invention for achieving this object distributes a plurality of optical signals transmitted through an optical cable, and splits each of the divided optical signals into two optical signals and any of the branched optical signals. A plurality of optical connection terminal unit for measuring the magnitude of the electrical signal for each one of the optical signal, a plurality of display unit and an external device for displaying the magnitude value of the electrical signal measured by the plurality of optical connection terminal, respectively, and measured An optical distribution device comprising a control unit for transmitting the magnitude value of the electrical signal to the external device, receiving the magnitude value of the electrical signal for the optical signal from the optical distribution device, and the magnitude value and the predetermined reference of the received electrical signal Remote access network control computer for comparing the magnitude values and notifying the control unit of the optical distribution device, the optical distribution cabinet And a communication network for transmitting and receiving data between the access network control computer.

The optical connection terminal may include an optical coupler for splitting a plurality of optical signals transmitted through the optical cable into two, a photoelectric conversion unit for converting one optical signal among the branched optical signals into an electrical signal, and the converted And a circuit unit measuring a magnitude value of an electric signal and transferring the magnitude value to the display unit and the control unit.

In addition, the access network control computer collects magnitude values of the electrical signal measured at the optical connection terminal unit through the connection network communication unit for communicating with the optical distribution device, the connection network communication unit and the magnitude value of the electrical signal is the predetermined It determines whether it is smaller than the reference size value and includes an access network controller for notifying the determination result.

In addition, in the optical signal quality measurement method using an optical distribution device comprising a plurality of optical connection terminal for distributing a plurality of optical signals input through the optical cable according to the present invention, each of the optical connection terminal portion is distributed to itself Dividing each corresponding optical signal into two optical signals, measuring a magnitude of an electrical signal corresponding to one of the branched optical signals in the optical connection terminal unit, and displaying a magnitude value of the optical signal; Transmitting the data to the access network control computer through a communication network, comparing the magnitude value of the electrical signal with the magnitude value of the reference signal in the access network control computer, and notifying the result of the comparison in the access network control computer. Include.

In addition, the measuring and displaying of the magnitude of the optical signal may include converting the optical signal into an electrical signal, measuring the magnitude of the converted electrical signal, and displaying the magnitude value.

As described above, the optical signal quality measuring system and the method using the optical splitter proposed by the present invention display the magnitude value of the optical signal measured at the optical connector of the optical splitter, and at the same time connected to the remote control computer The administrator can check the quality of the optical signal at a remote location using the access network control computer.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. In describing the embodiments, descriptions of technical contents that are well known in the art to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly communicate without obscure the core of the present invention by omitting unnecessary description.

1 is a view schematically showing the configuration of an optical distribution apparatus according to an embodiment of the present invention. 2 is a view showing a schematic configuration of an optical distribution apparatus according to an embodiment of the present invention. 3 is a view showing a schematic configuration of an optical connection terminal unit according to an embodiment of the present invention.

1 to 3, the optical distribution device 100 of the present invention includes a plurality of optical connection terminal units 130, a plurality of display units 150, and a controller 170.

An optical signal is input to the optical connection terminal unit 130 through the optical cable 110. The optical cable 110 is a transmission path for transmitting and receiving an optical signal, and includes a core, a clad, a jacket, and the like. The optical cable 110 may be provided so as to correspond to the number of the optical connection terminals 130, and are respectively connected to one side of the optical connection terminals 130.

In addition, a plurality of optical connection terminals 130 are provided. It is preferable that the input terminal of each optical connection terminal unit 130 is provided inside the optical distribution device 100 and the output terminal is exposed to the outside. An optical end 110 connected to the transmitting end is connected to the input terminal, and another optical cable 200 connected to the receiving end is connected to the output terminal. As a result, the optical connection terminal 130 electrically connects the optical cable 110 connected to the transmitting end and the other optical cable 200 connected to the receiving end, respectively. In one example of the present invention, the optical cables 110 and 200 connected to the optical connection terminal 130 preferably include an optical adapter, an optical jumper code (OJC), and the like.

The optical connection terminal unit 130 according to the present invention distributes a plurality of optical signals transmitted from the optical cable 110 connected to the input terminal. Preferably, each of the optical connection terminals 130 splits each optical signal distributed to itself into two optical signals, converts one branched optical signal into an electrical signal, and measures the magnitude of the converted electrical signal. do. At this time, the branched other optical signal is output to the output terminal and transmitted to another optical cable 200 connected to the output terminal.

To this end, the optical connection terminal 130 according to the present invention includes an optical coupler 131, a photoelectric conversion unit 133 and a circuit unit 135 as shown in FIG.

The optical coupler 131 splits the optical signal transmitted from the optical cable 110 connected to the input into two optical signals. One optical signal of the branched optical signal is transmitted to the photoelectric conversion unit 133, and the other optical signal is transmitted to the other optical cable 200 connected to the output (Output). The photoelectric conversion unit 133 converts the optical signal Output1 transmitted from the optical coupler 131 into an electrical signal. Although not shown in the drawing, the electrical signal thus converted may be optionally amplified by a predetermined amplifier if necessary. The circuit unit 135 measures the magnitude of the electric signal converted by the photoelectric conversion unit 133, transmits the magnitude value to the display unit 150, and simultaneously transmits the magnitude value to the control unit 170.

The display unit 150 displays the magnitude value of the electrical signal measured by the circuit unit 135. For example, the display unit 150 preferably displays the magnitude value of the electrical signal in letters such as numbers. In addition, the display unit 150 may display a warning message when the magnitude value of the electrical signal measured by the circuit unit 135 is smaller than the preset reference size value. The display unit 150 may include a light emitting diode (LED), a liquid crystal display (LCD), organic light emitting diodes (OLED), and the like.

The controller 170 controls each of the optical connection terminals 130 and the display unit 150. In addition, the optical distribution device 100 may communicate with an external device using a predetermined communication network. To this end, the controller 170 includes a data collection module 171, a communication module 173, a control module 175, and a memory 177 as shown in FIG. 3.

The data collection module 171 collects magnitude values of the electric signals transmitted from the circuit unit 135 and transmits the magnitude values of the collected electric signals to the communication module 173.

The communication module 173 transmits magnitude values of electric signals transmitted from the data collection module 171 to an external device under the control of the control module 175. Here, the external device communicates with the optical distribution device 100 through a predetermined communication network. Such a communication network may be applied to a wired communication network or a wireless communication network. Wired communication network means a communication network for transmitting and receiving data using a wire, and a wireless communication network means a communication network for transmitting and receiving data using a radio frequency (Radio Frequency). Accordingly, when the communication module 173 receives the control signal from the external device, the communication module 173 transmits the control signal to the control module 175.

The memory 177 stores information about the optical splitter 100. Preferably, it stores a unique IP (Internet Protocol) address previously assigned to the optical distribution device 100. This unique IP address is used for data transmission and reception via external devices and the Internet.

The control module 175 controls the signals between the components in the optical distribution device 100. In particular, the control module 175 controls to transmit the magnitude value of the electrical signal to the external device, and performs a function of controlling to receive and process various signals transmitted from the external device. In addition, wired / wireless communication with an external device is performed using an IP address stored in the memory 177. As such, the control module 175 controls the components of the optical distribution device 100 to measure the optical signal quality in the optical distribution device 100.

4 is a diagram illustrating a schematic configuration of the controller illustrated in FIG. 3. 5 is a diagram illustrating a schematic configuration of an access network control computer according to an embodiment of the present invention.

Here, the light distribution device will be described with reference to the light distribution device 100 shown in FIGS. 1 to 3, and redundant descriptions thereof will be omitted.

4 to 5, the optical signal quality measuring system 10 using the optical splitter includes an optical splitter 100, an access network control computer (hereinafter referred to as an ANC computer) 300, and a communication network. 500 may be configured to be included.

The optical distribution device 100 includes N optical connection terminal parts 130 (N ≧ 1, N is an integer). An optical cable 110 connected to a transmitting terminal is connected to an input terminal of each optical connecting terminal unit 130. The optical distribution device 100 distributes the optical signals transmitted through the optical cable 110 to a plurality of optical connection terminals 130. Each optical distribution device 130 branches each of the optical signals distributed to it into two optical signals, converts one of the optical signals into electrical signals, and measures the magnitude of the electrical signals. The optical distribution device 100 displays the magnitude value of the electrical signal corresponding to the optical signal and transmits the magnitude value of the electrical signal to the ANC computer 300 through the communication network 500.

The ANC computer 300 is disposed at a remote distance from the optical distribution device 100 by a predetermined distance, and collects the magnitude value of the electrical signal measured at each optical connection terminal unit 130 from the optical distribution device 100. The ANC computer 300 checks the quality of the optical signal by comparing whether the magnitude value of the collected electrical signal is equal to or less than a preset reference magnitude value. The ANC computer 300 displays the optical signal quality comparison result of the optical connection terminal unit 130. Furthermore, the ANC computer 300 may generate a control signal for the optical signal transmission of the optical connection terminal 130 according to the comparison result and transmit the control signal to the optical distribution apparatus 100 through the communication network 500. For example, in the ANC computer 300, the magnitude value of the electrical signal measured by the M (M≤N, M, N is an integer) th optical connection terminal unit 130 among the N optical connection terminal units 130 is a preset reference magnitude value. If it is determined below, the control signal for the optical signal transmission from the M-th optical connection terminal unit 130 is transmitted to the optical distribution device 100. To this end, the ANC computer 300 includes an ANC communication unit 310 and an ANC control unit 330 as shown in FIG. 5.

The ANC communication unit 310 collects magnitude values of electrical signals measured at each optical connection terminal unit 130 of the optical distribution device 100 through the communication network 500, and stores the control signals generated by the ANC control unit 330. Transmission to the distribution device 100. The ANC controller 330 compares the magnitude value of the electrical signal collected through the ANC communication unit 310 with a preset reference magnitude value. In this case, the ANC computer 300 further includes a display unit, and displays the magnitude value of the electrical signal collected from the optical distribution device 100 on the ANC display unit, and the magnitude value and the reference of the electrical signal compared by the ANC controller 330. It is preferable to display the result of comparison with the magnitude value and the like. For example, the ANC computer 300 preferably outputs the magnitude value of the electrical signal as a sound, and displays the magnitude value of the electrical signal on the ANC display in letters such as numbers. In addition, the ANC computer 300 may display a warning phrase such as [under reference signal] according to the comparison result.

The communication network 500 may be a wired communication network or a wireless communication network. A wired communication network refers to a communication network for transmitting and receiving data using a conductive wire, and a wireless communication network means a communication network for transmitting and receiving data using a radio frequency. That is, the communication network 500 according to the present invention is not only applicable to any one communication network, but may be applied to any communication network capable of remote communication between the optical distribution apparatus 100 and the ANC computer 300. .

6 is a signal flow diagram illustrating an optical signal quality measurement method using the optical splitter 100 according to an exemplary embodiment of the present invention.

Referring to FIG. 6, in the optical splitter 100, the optical signals transmitted through the optical cable 110 are distributed to a plurality of optical connection terminal units 130, and each optical connection terminal unit 130 is an optical coupler 131. Each optical signal distributed to itself is divided into two optical signals (S101). The photoelectric conversion unit 133 converts one optical signal of the optical signal branched from the optical coupler 131 into an electrical signal (S102). The circuit unit 135 measures the magnitude of the electric signal and transmits the magnitude value to the display unit 150 to display it (S103).

The optical distribution device 100 transmits the measured electric signal value to the ANC computer 300 (S104). The ANC computer 300 compares the magnitude value of the electrical signal measured by each optical connection terminal unit 130 collected from the optical distribution device 100 with a preset reference magnitude value (S105). The ANC computer 300 displays the magnitude value of the electrical signal measured by the optical connection terminal 130 (S106).

 As described above, the optical signal quality measuring system and the method using the optical splitter according to an embodiment of the present invention, the optical signal transmitted to the optical splitter 100 in the optical connection terminal 130 of the optical splitter 100 The size is measured by converting it into an electrical signal, and the magnitude value is displayed on the display unit 150 formed on one side of the optical distribution device 100, and simultaneously transmitted to the ANC computer 300 to transmit the optical distribution device from the ANC computer 300. The optical signal quality of 100 can be confirmed. Such a system can more easily and conveniently manage the size and quality of the optical signal transmitted to the optical connection terminal unit due to the increased capacity of the transmission network.

As described above, in the detailed description of the present invention has been described with respect to specific embodiments, various modifications are possible without departing from the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below, but also by the equivalents of the claims.

In accordance with an embodiment of the present invention, the optical connection terminal unit measures the size of an electrical signal corresponding to the optical signal in order to determine the quality of the optical signal transmitted to the optical connection terminal unit, and displays the magnitude value on the display unit. The present invention relates to an optical signal quality measurement system and a method for transmitting the optical signal quality to a network control computer to verify the optical signal quality.

The optical connection terminal part of the optical distribution device includes an optical coupler function, a photoelectric conversion part, a circuit part, etc., converts an optical signal transmitted to the optical connection terminal part into an electrical signal, measures the magnitude of the electrical signal, and displays the magnitude value on the display part. Since the quality of the optical distribution device and the optical signal can be controlled using a remotely connected access network control computer, the administrator can more conveniently check the quality of the optical signal transmitted to each optical connection terminal part and maintain more conveniently. Can pay

As a result, administrators have an advantage of more easily managing the quality of the optical signal transmitted to the optical connection terminal unit due to the increase in the capacity of the transmission network.

1 is a view showing a schematic configuration of an optical signal remote control system using an optical distribution device according to an embodiment of the present invention,

2 is a view showing a schematic configuration of an optical distribution device according to an embodiment of the present invention;

3 is a view showing a schematic configuration of an optical connection terminal unit according to an embodiment of the present invention;

4 is a view showing a schematic configuration of a control unit shown in FIG.

5 is a view showing a schematic configuration of an access network control computer according to an embodiment of the present invention;

6 is a signal flow diagram illustrating a method for measuring optical signal quality using an optical splitter according to an embodiment of the present invention.

Claims (5)

A plurality of optical signals are divided into a plurality of optical signals transmitted through the optical cable, and each of the divided optical signals is divided into two optical signals, and a plurality of optical signals for measuring the magnitude of an electrical signal for any one of the branched optical signals are measured. And an optical connection terminal unit, a plurality of display units respectively displaying magnitude values of electrical signals measured by the plurality of optical connection terminal units, and a controller for communicating the magnitude values of the measured electrical signals to the external devices. Optical distribution device; Receiving the magnitude value of the electrical signal for the optical signal from the optical distribution device and compares the magnitude value of the received electrical signal with a predetermined reference magnitude value of the remote site to notify the control unit of the optical distribution device Access network control computer; And A communication network for transmitting and receiving data between the optical distribution device and the access network control computer; Optical signal quality measurement system using an optical distribution device comprising a. The optical connection terminal of claim 1, An optical coupler for splitting each of a plurality of optical signals transmitted through the optical cable into two; A photoelectric conversion unit converting one optical signal of the branched optical signal into an electrical signal; And A circuit unit measuring a magnitude value of the converted electric signal and transferring the magnitude value to the display unit and the controller; Optical signal quality measurement system using an optical distribution device comprising a. According to claim 1, wherein the access network control computer, An access network communication unit communicating with the optical distribution device; And An access network controller configured to collect magnitude values of the electrical signal measured by the optical connection terminal unit through the access network communication unit, determine whether the magnitude of the electrical signal is smaller than the predetermined reference magnitude value, and notify the determination result; Optical signal quality measurement system using an optical distribution device comprising a. In the optical signal quality measurement method using an optical distribution device comprising a plurality of optical connection terminals for distributing a plurality of optical signals input through an optical cable, Dividing each corresponding optical signal distributed to itself by the respective optical connection terminal units into two optical signals; Measuring a magnitude of an electrical signal corresponding to one of the branched optical signals by the optical connection terminal unit and displaying a magnitude value thereof; Transmitting the magnitude value of the electrical signal to an access network control computer through a communication network; Comparing the magnitude value of the electrical signal with a magnitude value of a reference signal in the access network control computer; And Notifying the comparison result in the access network control computer; Optical signal quality measurement method using an optical distribution device comprising a. The method of claim 4, wherein the measuring and displaying of the magnitude of the optical signal comprises: Converting the optical signal into an electrical signal; And Measuring the magnitude of the converted electrical signal and displaying the magnitude value; Optical signal quality measurement method using an optical distribution device comprising a.

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