KR100869906B1 - Multi-interface optical network unit for gigabit dense wavelength division multiplexer passive optical network and matching module for the optical network unit - Google Patents

Abstract

The present invention discloses a composite optical network device of a gigaclass dense wavelength division multiplexing passive optical subscriber network.

The composite optical network device of the present invention comprises: an optical module interface unit accommodating and detachably attaching an optical module for transmitting and receiving optical signals of an optical line terminal (OLT); When the optical module is mounted on the optical module interface unit, the optical module detects the type of the mounted optical module, collects the state information of the optical module according to the type of the mounted optical module, and according to the type of the optical module and the light source calibration command. An optical module matching unit outputting a light source control signal for controlling a light source of the optical module to the optical module interface unit; An Ethernet switch for switching a signal received through the optical module interface unit according to a characteristic thereof; An OAM processing unit generating the light source calibration command based on the information received from the OLT and the state information of the optical module provided from the optical module matching unit through the Ethernet switch and outputting the command to the optical module matching unit; And a subscriber connection interface for transmitting a signal received from the Ethernet switch to a subscriber line and performing a reverse function thereof. By supporting various light sources in one terminal, the ONU is not separately provided according to the optical signal transmission method of the OLT. This eliminates the burden of facility inventory and maximizes the utilization of ONU.

Description

Multi-interface optical network unit for gigabit dense wavelength division multiplexer passive optical network and matching module for the optical network unit}

Figure 1 is a schematic diagram showing the configuration of a giga-class DWDM-PON system.

2 is a configuration diagram showing the configuration of a composite optical network device ONU according to a first embodiment of the present invention.

3A and 3B are diagrams illustrating an example of an optical module requiring wavelength alignment and temperature control among wavelength independent optical modules that may be mounted to the optical module interface of FIG. 2, respectively.

4 is a diagram illustrating an example of a configuration of the optical module matching unit of FIG. 2.

FIG. 5 is a diagram illustrating another configuration example of the optical module matching unit of FIG. 2. FIG.

FIG. 6 is a diagram illustrating the configuration of an interface converter in FIG. 4 in more detail. FIG.

7 illustrates an example of a configuration of a subscriber access interface supporting heterogeneous interfaces.

8 is a configuration diagram showing a configuration of a complex ONU according to a second embodiment of the present invention.

9 is a configuration diagram showing in more detail the configuration of the matching module in FIG.

<Description of Symbols for Main Parts of Drawings>

10: optical module interface unit 20: optical module matching unit

21, 24, 72: optical module monitoring unit 22, 25, 74: optical module control unit

23, 26: interface conversion unit 30: Ethernet switch

40: OAM processing unit 50: subscriber access interface unit

60: matching module interface 70: matching module

The present invention relates to an optical network unit (ONU) in a Gigabit Dense Wavelength Division Multiplexer Passive Optical Network (GW-PON). The present invention relates to a complex ONU that can support different types of optical modules in a complex manner.

Next-generation communications require Fiber To The Home (FTTH), which installs an optical line to the home in order to transmit a lot of information to subscribers faster. The biggest problem of the optical subscriber network is that it is expensive to replace the existing subscriber network consisting of the optical network with the optical subscriber network. Therefore, as a low cost optical subscriber network construction alternative, a passive optical network (PON) optical transmission system has been considered.

Figure 1 is a schematic diagram showing the configuration of a giga-class DWDM-PON system.

WDM-PON system is installed in Optical Line Terminal (OLT) (1) installed in the country, Optical Network Units (3) installed in subscriber's house, building communication room, apartment main wiring room, and manhole or telephone pole. It consists of a Remote Node (RN) (2).

In the WDM-PON, a plurality of ONUs 3 are connected to the OLT 1 through multiple optical links by using a multiplexing wavelength for each subscriber or service. In the OLT (1), optical signals having different wavelengths are generated, and the RN (2) located between the OLT (1) and the ONU (3) uses a passive optical device such as an arrayed waveguide grating (AWG) to provide a signal. Routing and multiplexing / demultiplexing transmits OLT (1) and ONU (3) physically. AWGs are also called Waveguide Grating Routers (WGRs) or Phased arrays (PHASARs).

In the case of the giga-class DWDM-PON, this means that the transmission capacity is 1 Gb / s or more per wavelength.

The ONU of the conventional WDM-PON has been developed to support only a specific single interface according to the optical signal of the OLT in the interface with the OLT. One type of Ethernet subscriber system that is currently in operation is to implement and operate a GIC (Gigabit Interface Converter) for the Ethernet transceiver in the OLT, and the ONU is equipped with a specific interface device for the transceiver implemented in the OLT. In particular, when using WDM, the interface method may be different depending on the wavelength transmission method.

This conventional ONU is well suited for a single interface because it is implemented for optical signal transceivers of a particular technology, but different types of WDM (e.g., WDM using wavelength independent optical modules) There is a problem that cannot be applied. Therefore, there is a need for an ONU that can be combined with Ethernet devices and WDM.

Accordingly, an object of the present invention is to enable the ONU to provide various types of interfaces without being affected by the optical signal transmission method of the OLT.

In accordance with an aspect of the present invention, there is provided a composite optical network apparatus including: an optical module interface unit accommodating and detachable an optical module for transmitting and receiving an optical signal of an optical line terminal (OLT); When the optical module is mounted on the optical module interface unit, the optical module detects the type of the mounted optical module, collects the state information of the optical module according to the type of the mounted optical module, and according to the type of the optical module and the light source calibration command. An optical module matching unit outputting a light source control signal for controlling a light source of the optical module to the optical module interface unit; An Ethernet switch for switching a signal received through the optical module interface unit according to a characteristic thereof; An OAM processing unit generating the light source calibration command based on the information received from the OLT and the state information of the optical module provided from the optical module matching unit through the Ethernet switch and outputting the command to the optical module matching unit; And a subscriber access interface for transmitting a signal received from the Ethernet switch to a subscriber line and performing the reverse function.

In accordance with another aspect of the present invention, a hybrid optical network device includes: a matching module for collecting state information of a mounted optical module and outputting a light source control signal for controlling a light source of the optical module to the optical module according to a light source calibration command; Matching module interface for accommodating the detachable; An Ethernet switch for switching a signal received through the matching module interface unit according to a characteristic thereof; An OAM processor configured to generate the light source calibration command based on the information received from the OLT through the Ethernet switch and the state information of the optical module provided from the matching module, and output the light source calibration command to the matching module interface unit; And a subscriber access interface for transmitting a signal received from the Ethernet switch to a subscriber line and performing the reverse function.

The matching module for the composite optical network of the present invention comprises: an optical module interface for accommodating and detachably attaching an optical module for transmitting and receiving an optical signal of an optical line terminal (OLT); An optical module monitoring unit collecting state information of the mounted optical module; And an optical module control unit for outputting a light source control signal for controlling the light source of the optical module to the optical module interface unit according to a light source calibration command, and configured to be detachable to an ONU (Optical Network Uint).

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

2 is a block diagram showing the configuration of a composite optical network device ONU according to a first embodiment of the present invention.

The complex ONU of the present invention includes an optical module interface unit 10, an optical module matching unit 20, an Ethernet switch 30, an OAM processing unit 40, and a subscriber connection interface unit 50.

The optical module interface unit 10 is an optical module (standard GBIC or Small Form-factor Pluggable (SFP) optical module that receives a downlink optical signal from an OLT and converts it into an electrical signal and converts an electrical signal to be transmitted to the OLT into an uplink optical signal). Or a wavelength independent optical module) so that the optical module can be detachably mounted, and the input / output terminals (Pin) of the mounted optical module are electrically connected to the optical module matching unit 20 and the Ethernet switch 30. By transmitting the signals output from the optical module to the optical module matching unit 20 and the Ethernet switch 30 and performs the reverse function. The optical module interface unit 10 is basically for input / output (transmission failure, transmission interruption, differential signal, reception failure, 2-wire serial, power supply) supported by the standard GBIC or SFP to maintain compatibility with the standard GBIC or SFP. Connection terminals are provided. In addition, the optical module interface unit 10 is a control signal connection terminal (MDP: Module Dependent Pin) from the optical module matching unit 20 for light source control (temperature control or wavelength alignment) when the wavelength independent optical module is mounted. It is provided.

The optical module matching unit 20 detects the type of the optical module mounted on the optical module interface unit 10 and collects state information (input / output optical power, module temperature, output wavelength, etc.) of the optical module according to the type of the optical module. To the OAM processing unit 40. The optical module matching unit 20 controls the optical module according to the detected type of optical module and the light source calibration command from the OAM processing unit 40. That is, when a specific type of optical module is mounted on the optical module interface unit 10, the optical module matching unit 20 reads module definition information from the mounted optical module to detect the type of the optical module. In this case, when the mounted optical module is a wavelength independent optical module, the optical module matching unit 20 receives the state information from the mounted optical module while the optical module is operating and transmits the state information to the OAM processing unit 40 and the OAM processing unit ( According to the light source calibration command from 40, a light source control signal (temperature control signal or wavelength control signal) for controlling the light source is generated and output to the optical module interface unit 10. The light source control signal is applied to a wavelength controller (not shown) or a temperature controller (not shown) of the wavelength independent optical module through the connection terminal MDP of the optical module interface unit 10.

The Ethernet switch 30 transmits the signal received through the optical module interface unit 10 to the OAM processing unit 40 or the subscriber access interface unit 50 according to its characteristics and performs the reverse function. That is, when the Ethernet switch 30 receives the downlink signal (differential signal) output from the optical module through the optical module interface unit 10 and transmits it to the subscriber access interface unit 50, the wavelength allocation information of the wavelength tunable laser. Etc. are transmitted to the OAM processing unit 40. In this case, when the subscriber access interface unit 50 is configured in the form of heterogeneous interfaces supporting both the mega subscriber interface and the giga subscriber interface, the Ethernet switch 30 includes a plurality of mega ports or giga ports, which are downlink signals. The megabit frame or the gigabit frame is switched to the megaport or the gigaport, respectively, and transmitted to the subscriber access interface 50.

The OAM processing unit 40 performs maintenance functions such as alarm / failure processing, performance monitoring, and device control for the ONU according to the information from the Ethernet switch 30 and the optical module matching unit 20, and interlocks with the OLT. Exchange operational information. In particular, when the OAM processing unit 40 of the present invention receives the state information of the optical module from the optical module matching unit 20 and transmits it to the OLT, when the output wavelength of the light source deviates from the wavelength assigned by the OLT, the optical module The light source calibration command is output to the matching unit 20 so that the output wavelength of the optical module can be adjusted and stabilized according to the wavelength information received from the OLT.

The subscriber access interface unit 50 interfaces with the subscriber line to transmit the downlink signal from the Ethernet switch 30 to the subscriber station and performs the reverse function. In this case, the subscriber access interface unit 50 may support a single interface corresponding to the subscriber line base or support heterogeneous interfaces that are not affected by the subscriber line base. That is, the subscriber access interface unit 50 provides 100Base_Fx single (optical cable subscriber line), 100Base_Tx single (UTP (Unshielded Twisted Pair) cable subscriber line), xDSL single provision (copper line (TP) according to the subscriber's line type as before. (Twisted Pair) subscriber line based) can be configured in a single interface form, or as shown in Figure 7 to interface the mega-class interface unit 52 and 1000B_Fx or 1000B_Tx that can selectively support 100Base_Fx, 100Base_Tx, xDSL interface It can be configured in a heterogeneous interface form that can be provided with all the giga-level interface unit 54 supporting the interface with the subscriber line of different types. At this time, the heterogeneous interface support technology that is not affected by the subscriber's line-based form is a "complex optical network device supporting heterogeneous interfaces" filed by the applicant on November 28, 2005 (Application No. 10-2005-0114331). It can be easily implemented through. Therefore, detailed description of the method for supporting the heterogeneous subscriber access interface is omitted here. In addition, the subscriber access interface 50 receives the 100Base_Fx, 100Base_Tx, xDSL interface and the giga-class interface 54 in the form of a removable detachable form in the mega interface 52, the interface required according to the subscriber line environment Bay can be mounted and used in ONU.

3A and 3B are diagrams illustrating an example of an optical module requiring wavelength alignment and temperature control among wavelength independent optical modules that may be mounted to the optical module interface of FIG. 2.

The optical module interface unit 10 of the present invention is configured to accommodate wavelength independent optical modules while maintaining compatibility with standard GBIC or SFP.

To this end, the optical module interface unit 10 is basically a connection terminal for interfacing with terminals (transmission failure, transmission interruption, differential signal, reception failure, 2-wire serial, power supply) used in standard GBIC or SFP optical modules. Equipped with.

However, as shown in FIG. 3, since the wavelength independent optical module requires light source control (temperature control or wavelength alignment) unlike standard GBIC or SFP, terminals defined for standard GBIC and SFP (transmission failure, transmission interruption). Terminal (MDP: Module Dependent Pin) to receive control signal (temperature control signal or wavelength control signal) from optical module matching unit 20 for light source control in addition to differential signal, reception error, 2-wire series, power supply) ) Must be newly defined. To this end, in the present invention, any one of pins 2, 3, 8, 9, 11, 14, 17, and 20 assigned to ground among the 20-pin standard pin arrays adopted by GBIC and SFP as terminals for such light source control. Use more than one.

Therefore, the optical module interface unit 10 is a connection terminal for interface with terminals used in standard GBIC or SFP and a connection terminal for interface with a newly defined terminal for light source control of a wavelength independent optical module. ).

4 is a diagram illustrating an exemplary configuration of the optical module matching unit 20 of FIG. 2.

The optical module matching unit 20 includes an optical module monitoring unit 21, an optical module control unit 22, and an interface conversion unit 23.

The optical module monitoring unit 21 reads module definition information from an optical module when a specific optical module is mounted, and whether the mounted optical module is a standard GBIC or SFP, or a wavelength independent transceiver used in a giga-class DWDM-PON. In the case of the recognition and the wavelength independent transceiver, the light source detects whether the light source is a FP laser or a reflective semiconductor optical amplifier (RSOA) or a wavelength tunable laser and informs the optical module controller 22 and the OAM processor 40 of the type of the corresponding optical module. . In addition, the optical module monitoring unit 21 receives the state information (input and output optical power, module temperature, output wavelength, etc.) of the optical module from the optical module during operation of the optical module and transmits it to the OAM processing unit 40. Of course, this is based on the premise that the mounted optical module can provide the above-described information in conjunction with the optical module monitoring unit 21. At this time, the optical module monitoring unit 21 receives module definition information and status information from the optical module through a 2-wire serial (I ² C) interface.

The optical module control unit 22 receives the selection signal and the light source control signal (wavelength control signal or temperature control signal) according to the optical module type information from the optical module monitoring unit 21 and the light source calibration command from the OAM processing unit 40. Output to the interface converter 23. That is, the optical module controller 22 is an optical module interface unit 10 when the mounted optical module is a wavelength independent optical module using a wavelength independent light source such as an FP laser or a reflective semiconductor optical amplifier (RSOA). Temperature for controlling the temperature of the optical module according to the light source calibration command from the OAM processing unit 40 and outputting a selection signal for connecting the connection terminal (MDP) of its temperature control signal output terminal to the interface conversion unit 23; Output a control signal. In addition, when the mounted optical module is a wavelength independent optical module using a wavelength tunable laser, the optical module controller 24 has a connection terminal MDP of the optical module interface unit 10 with its wavelength control signal output terminal. The selection signal to be connected is output to the interface converter 23 and a wavelength control signal for aligning the output wavelength of the optical module according to the wavelength value obtained from the OAM processor 40. In addition, when the mounted optical module is a standard GBIC or SFP, the optical module controller 22 outputs only a selection signal for connecting the connection terminal MDP of the optical module interface unit 10 to the ground terminal GND. If the interface conversion unit 23 does not receive the selection signal from the optical module control unit 22 and basically connects the connection terminal MDP to the ground terminal, the optical module control unit 22 may be configured to use the optical module. In case of standard GBIC or SFP, no separate operation is performed.

The interface converter 23 matches the physical connection between the optical module interface unit 10 and the optical module controller 22 according to the type of the optical module mounted on the optical module interface unit 10. That is, the interface unit converting unit 23 converts the connection terminal MDP of the optical module interface unit 10 to the wavelength control signal output terminal of the optical module control unit 22 according to the selection signal from the optical module control unit 22. By connecting to one of the temperature control signal output terminal and the ground terminal (GND), a light source control signal suitable for the type of the optical module mounted can be applied to the optical module through the connection terminal (MDP). Alternatively, the interface converter 23 allows the connection terminal MDP to be basically connected to the ground terminal, and controls the connection terminal MDP in accordance with the selection signal from the optical module controller 22 to control the wavelength of the optical module controller 22. It may be connected to the signal output terminal or the temperature control signal output terminal.

FIG. 5 is a diagram illustrating another configuration example of the optical module matching unit 20 of FIG. 2.

In comparison with FIG. 4, when the type of the optical module is detected, the optical module monitoring unit 24 notifies the OAM processing unit 40 only, and the connection terminal (MDP) and the optical terminal of the optical module interface unit 10 according to the type of the optical module. It directly outputs a selection signal for controlling the physical connection between the module controllers 25 to the interface converter 26.

Accordingly, the optical module control unit 25 performs only a function of outputting a temperature control signal or a wavelength control signal according to the instruction of the OAM processing unit 40, and the interface conversion unit 26 is provided from the optical module monitoring unit 24. According to the selection signal, the connection terminal (MDP) of the optical module interface unit 10 and the optical module control unit 25 are physically connected.

FIG. 6 is a diagram illustrating in detail the configuration of the interface converter 23 in FIG. 4.

The interface converting unit 23 may include a connection terminal MDP of the optical module interface unit 10, a wavelength control signal output terminal of the optical module control unit 22, a temperature control signal output terminal, and the like according to a selection signal from the optical module control unit 22. It has a switch structure that selectively connects between ground terminals (GND). At this time, preferably, the interface converter 23 is basically connected to the ground terminal GND, and when a selection signal is applied from the optical module controller 22, the switch is controlled by the wavelength control signal output terminal or temperature control of the optical module controller 22. It can be connected to the signal output terminal.

If the optical module matching unit 20 is configured as shown in FIG. 5, the interface conversion unit 23 receives a selection signal from the optical module monitoring unit 24, and the other configurations are the same as those of FIG. 6.

In the above-described embodiment, the optical module matching unit 20 automatically detects the type of the optical module through communication with the optical module mounted in the ONU, and automatically performs the matching accordingly so that the optical module matching unit 20 performs the optical matching with the OLT. The structure in which only the module can be removed is described. However, if the optical module type detection and matching is automatically performed, the manufacturing cost of the ONU may increase. Therefore, the transmission path of the light source control signal is fixed to the specific type of the optical module without automatically performing the optical module type detection and matching, and the optical module matching unit can be implemented in a modular form so that the ONU can be attached and detached.

8 is a block diagram showing the configuration of a complex ONU according to a second embodiment of the present invention.

In the composite ONU of the present embodiment, the Ethernet switch 30, the OAM processing unit 40, and the subscriber access interface unit 50 are the same as those in FIG. 2, and the same reference numerals are used as in FIG. .

The matching module interface unit 60 accommodates the matching module 70 to be described later, which can be inserted and detached, and the input / output terminals (Pin) of the mounted matching module 70 are mounted to the optical module matching unit 20 and the Ethernet switch 30. ) Is connected to the terminal to be electrically connected to the signal transmitted from the matching module 70 to the Ethernet switch 30 and the OAM processor 40 and performs the reverse function.

The matching module 70 accommodates the optical module so that the optical module can be detachably mounted, and is made of a single module to allow the optical module to be detachably attached to the interface module 60.

9 is a configuration diagram showing in more detail the configuration of the matching module 70 in FIG.

The matching module 70 includes an optical module interface unit 72, an optical module monitoring unit 74, and an optical module control unit 76.

The optical module interface unit 72 has the same function and structure as the optical module interface unit 10 in the first embodiment.

The optical module monitoring unit 74 does not detect the type of the optical module and does not generate a selection signal as compared with the optical module monitoring unit 21 or 24 of the first embodiment. That is, when the matching module 70 is mounted on the matching module interface unit 60, the optical module monitoring unit 74 collects state information of the optical module and transmits the state information to the OAM processing unit 40.

The optical module controller 76 does not generate a selection signal as compared with the optical module controller 22 of the first embodiment. That is, the optical module controller 76 outputs the light source control signal to the optical module interface unit 72 according to the light source calibration command from the OAM processing unit 40 when the matching module 70 is mounted on the matching module interface unit 60. do.

At this time, the state information collection and the light source control signal generation of the optical module is the same as the function of the optical module matching unit 20 in the first embodiment.

The difference between the matching module 70 in the present embodiment and the optical module matching unit 20 in the first embodiment will be described in more detail as follows.

The matching module 70 is fixed in advance for the optical module of the specified type so that the transmission path of the light source control signal can be accommodated only to the optical module of the specified type. That is, the matching module 70 using the optical module of the FP laser or RSOA is configured such that the connection terminal (MDP) of the optical module interface unit 72 is directly connected to the temperature control signal output terminal of the optical module controller 76. do. The matching module 70 using the optical module of the tunable laser is configured such that the connection terminal MDP of the optical module interface unit 72 is directly connected to the wavelength control signal output terminal of the optical module controller 76. . Therefore, the user should select and use the matching module 70 suitable for the optical module to be used.

The above-described structure of FIG. 9 corresponds to the case of using the wavelength independent optical module, and if the standard GBIC or SFP optical module is to be used, the matching module 70 may be replaced by the optical module matching unit (first embodiment). 20 may include an optical module interface unit 10 and configured to be detachable to the ONU.

As described above, the complex ONU of the present invention does not need to separately provide the ONU according to the optical signal transmission method of the OLT by supporting various light sources in a single terminal, thereby minimizing the facility inventory burden and utilizing the ONU. It can be maximized.

Claims (21)

An optical module interface unit accommodating and detachably attaching an optical module for transmitting and receiving an optical signal of an optical line terminal (OLT); When the optical module is mounted on the optical module interface unit, the optical module detects the type of the mounted optical module, collects the state information of the optical module according to the type of the mounted optical module, and according to the type of the optical module and the light source calibration command. An optical module matching unit outputting a light source control signal for controlling a light source of the optical module to the optical module interface unit; An Ethernet switch for switching a signal received through the optical module interface unit according to a characteristic thereof; An OAM processing unit generating the light source calibration command based on the information received from the OLT and the state information of the optical module provided from the optical module matching unit through the Ethernet switch and outputting the command to the optical module matching unit; And And a subscriber access interface for transmitting a signal received from the Ethernet switch to a subscriber line and performing the reverse function. According to claim 1, wherein the optical module interface unit And a connection terminal for compatibility with a standard Ethernet interface (GBIC) and a connection terminal for transmitting the light source control signal from the optical module matching unit to the optical module. . The method of claim 1, wherein the optical module matching unit An optical module monitoring unit for detecting a type of the optical module and collecting state information of the optical module and transmitting the collected state information to the OAM processing unit; An optical module controller which receives the type information of the optical module from the optical module monitoring unit, outputs a selection signal according to the type information, and outputs the light source control signal according to the light source calibration command; And And an interface conversion unit for converting a physical connection between the optical module interface unit and the optical module control unit to apply a light source control signal from the optical module control unit to the optical module according to the selection signal. Device. The method of claim 1, wherein the optical module matching unit An optical module monitoring unit for detecting a type of the optical module, outputting a selection signal according to the type, collecting state information of the optical module, and transmitting the collected state information to the OAM processing unit; An optical module controller to output the light source control signal according to the light source calibration command; And And an interface conversion unit for converting a physical connection between the optical module interface unit and the optical module control unit to apply a light source control signal from the optical module control unit to the optical module according to the selection signal. Device. According to claim 3 or 4, wherein the optical module monitoring unit And reading the module definition information of the optical module to detect the type of the optical module. The method of claim 5, wherein the optical module monitoring unit And detecting the type of the optical module and collecting the status information through a two-wire serial interface. The method of claim 3 or 4, wherein the optical module control unit When the light source of the optical module is a FP laser or a reflective semiconductor optical amplifier (RSOA) outputs a temperature control signal as the light source control signal, And a wavelength control signal as the light source control signal when the light source of the optical module is a tunable laser. The method of claim 7, wherein the interface conversion unit And a specific connection terminal of the optical module interface unit to one of the temperature control signal output terminal and the wavelength control signal output terminal according to the selection signal. The method of claim 1, wherein the subscriber access interface unit It provides a downlink signal from the Ethernet switch to a subscriber station by connecting one of an optical cable subscriber line (100Base_Fx), an unshielded twisted pair (UTP) cable subscriber line (100Base_Tx), and a copper subscriber line (xDSL) to a single interface. Composite optical network device. The method of claim 1, wherein the subscriber access interface unit A composite optical network device selectively supporting an interface with at least one of an optical cable subscriber line (100Base_Fx), an unshielded twisted pair (UTP) cable subscriber line (100Base_Tx), and a copper wire subscriber line (xDSL). The method of claim 10, wherein the subscriber access interface unit And a giga-class interface unit supporting the 1000B_Fx or 1000B_Tx interface. The method of claim 11, wherein the subscriber access interface unit And a giga-class interface unit in a removable form. A matching module interface unit for collecting the state information of the mounted optical module and accommodating the matching module for outputting a light source control signal for controlling the light source of the optical module to the optical module according to a light source calibration command; An Ethernet switch for switching a signal received through the matching module interface unit according to a characteristic thereof; An OAM processor configured to generate the light source calibration command based on the information received from the OLT through the Ethernet switch and the state information of the optical module provided from the matching module, and output the light source calibration command to the matching module interface unit; And And a subscriber access interface for transmitting a signal received from the Ethernet switch to a subscriber line and performing the reverse function. The method of claim 13, wherein the subscriber access interface unit It provides a downlink signal from the Ethernet switch to a subscriber station by connecting one of an optical cable subscriber line (100Base_Fx), an unshielded twisted pair (UTP) cable subscriber line (100Base_Tx), and a copper wire subscriber line (xDSL) to a single interface. Composite optical network device. The method of claim 13, wherein the subscriber access interface unit A composite optical network device selectively supporting an interface with at least one of an optical cable subscriber line (100Base_Fx), an unshielded twisted pair (UTP) cable subscriber line (100Base_Tx), and a copper wire subscriber line (xDSL). The method of claim 15, wherein the subscriber access interface unit And a giga-class interface unit supporting the 1000B_Fx or 1000B_Tx interface. The method of claim 16, wherein the subscriber access interface unit And a giga-class interface unit in a removable form. An optical module interface unit accommodating and detachably attaching an optical module for transmitting and receiving an optical signal of an optical line terminal (OLT); An optical module monitoring unit collecting state information of the mounted optical module; And An optical module controller for outputting a light source control signal for controlling a light source of the optical module to the optical module interface unit according to a light source calibration command; Matching module for a compound optical network device configured to be detachable to an ONU (Optical Network Unit). The method of claim 18, And a first connection terminal for compatibility with a standard Ethernet interface (GBIC: Gabit Interface Converter) and a second connection terminal for transmitting the light source control signal to the optical module. module. 20. The method of claim 19, wherein the second connection terminal And a matching module connected to a terminal for outputting a temperature control signal as the light source control signal among the output terminals of the optical module controller. 20. The method of claim 19, wherein the second connection terminal And a matching module for outputting the wavelength control signal as the light source control signal among the output terminals of the optical module controller.

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