CN105162514A - Optical fiber ring network communication system and method - Google Patents

Abstract

The invention discloses an optical fiber ring network communication system and method. The system includes: the optical fiber ring network is sequentially connected by a network management device and a plurality of node devices to form a closed ring topology structure, each of the node devices Both are equipped with an optical splitting device and an optical switch device; wherein the optical splitting device is used to divide the received optical signal into two identical optical signals, wherein one optical signal is directly input into the optical switching device, and the other One optical signal is input into the node equipment; the optical switch device is connected to the next node equipment, and is used for inputting the one optical signal to the next node equipment when the node equipment fails. The invention greatly enhances the reliability of the optical fiber ring network, thereby increasing the reliability of system operation.

Description

Optical fiber ring network communication system and method

technical field

The invention relates to the field of optical fiber communication, in particular to an optical fiber ring network communication system and method.

Background technique

Ring Network Topology (RingNetworkTopology) is a closed topology that does not require a terminator. Each node device in the network structure is connected in a hand-in-hand manner, and has been connected to the network management device to form a closed ring topology. When any two devices in the ring network structure fail, all non-faulty device communications between the two failed devices will fail, resulting in data transmission failure.

Therefore, it is necessary to provide a technical solution to solve the problem that when any two node devices in the topology of the optical fiber ring network fail, the data of all non-faulty devices between the two node fault devices can communicate normally.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and to provide a fiber optic ring network communication system and method, aiming to solve the problem that when any two node devices in the fiber optic ring network topology fail, the two nodes The problem that the data of all non-faulty devices can communicate normally between faulty devices.

In order to solve the above-mentioned technical problems, firstly, the present invention provides a communication node device of an optical fiber ring network, including a photoelectric conversion module, a data processing and control module, and an electro-optic conversion module; it is characterized in that it also includes an optical branching device and an optical switching device; The optical switch device is provided with a port A and an access port B; the optical branching device is used to divide the received optical signal into two identical optical signals, wherein one optical signal is directly input into the optical switch device port A; another optical signal is input to the photoelectric conversion module, and then output to port B of the optical switch device by the electro-optic conversion module after being processed by the data processing and control module.

Further, the optical splitting device is a 1:2 passive optical splitter.

Further, the optical switch device is an active optical switch.

Further, the power-off port of the optical switch device is port A, and the power-on port is port B.

Secondly, the present invention provides an optical fiber ring network communication system, which is characterized in that it includes a network management device and a plurality of node devices, and the network management device and a plurality of node devices are sequentially connected to form a closed ring topology; the network management One end of the equipment is connected to the input end of the optical branching device of a node device, and the other end is connected to the port of the optical switch device of a node device; the port of the optical switching device of the previous node device is connected to the input end of the optical branching device of the next node device .

Again, the present invention provides a kind of optical fiber ring network communication method, it is characterized in that: this method comprises the steps:

S1: One end of the network management device is connected to the input end of the optical branching device of a node device, and the other end is connected to the port of the optical switch device of a node device; the port of the optical switch device of the previous node device is connected to the optical branching device of the next node device Device input connection;

S2. The optical branching device of each node device divides the received optical signal into the same two optical signals, wherein one optical signal is directly input to the port A of the optical switch device, and the other optical signal is input to the The photoelectric conversion module is output to the port B of the optical switch device by the electro-optic conversion module after being processed by the data processing and control module;

S3. When the node device is working normally, the switch pole of the optical switch device is at port B. At this time, the port A end is in a non-conductive state, and the optical signal output from the optical branching device is transmitted through the port B of the optical switch device. to the next power-saving device;

S4. When a node device fails, the switch pole of the optical switch device is at port A, and one optical signal output from the optical branching device is transmitted from port A to the next node device.

Further, the optical splitting device is a 1:2 passive optical splitter.

Further, the optical switch device is an active optical switch.

Compared with prior art, the beneficial effect of the present invention:

In the present invention, an optical branching device and an optical switch device are added to each node equipment structure in the original optical fiber ring network system. The optical branching device divides the optical signal received by the node device into two identical optical signals, one of which is The optical signal is directly input to the optical switch device, another optical signal is input into the node device, and the optical switch device is connected to the next node device for inputting the one optical signal to the next node device when the node device fails. node device. The invention enables the signal to be transmitted to the next node device when the node device is faulty, thereby ensuring that any faultless node device can transmit the signal, and greatly enhancing the reliability of the topology communication of the optical fiber ring network.

Description of drawings:

Fig. 1 is a schematic diagram of the optical fiber ring network communication system of the present invention;

Fig. 2 is a schematic diagram of an optical fiber ring network communication system in an embodiment of the present invention;

Fig. 3 is a schematic diagram of the optical signal transmission structure when the node device is working normally;

FIG. 4 is a schematic diagram of an optical signal transmission structure when a node device fails.

Detailed ways

The present invention will be further described in detail below in combination with specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

The present invention provides an optical fiber ring network communication system. The optical fiber ring network is sequentially connected by a network management device and a plurality of node devices to form a closed ring topology structure. Each node device is equipped with an optical branch device and an optical switch device; wherein, the optical branching device is used to divide the received optical signal into the same two optical signals, wherein one optical signal is directly input to the optical switch device, and the other optical signal is input to the In the node device: the optical switch device is connected to the next node device, and is used for inputting the one optical signal to the next node device when the node device fails.

The system of the present invention adds an optical branching device and an optical switch device to the structure of each node device in the original optical fiber ring network system, and the optical branching device divides the optical signal received by the node device into the same two-way optical signal, wherein One optical signal is directly input to the optical switch device, another optical signal is input to the node device, and the optical switch device is connected to the next node device for inputting the one optical signal to the next node device when the node device fails. A node device. The invention enables the signal to be transmitted to the next node device when the node device is faulty, thereby ensuring that any faultless node device can transmit the signal, and greatly enhancing the reliability of the topology communication of the optical fiber ring network.

The present invention is illustrated below in conjunction with specific embodiments. Specifically, referring to Fig. 1-2, the optical fiber ring network is sequentially connected by a network management device and a plurality of node devices (1-N) to form a closed ring topology, each of the node devices in this embodiment (1, 2, 3, 4, 5) are equipped with optical branching devices and optical switching devices. For convenience of description, only one node device 5 in FIG. 2 shows an optical branching device 501 and an optical switching device 502 , which is not used to limit the present invention. Wherein, the optical branching device 501 is used to divide the received optical signal from the previous node device 3 into the same two optical signals, wherein one optical signal is directly input to the optical switch device 502, and the other optical signal The signal is input into the node device 5; the optical switch device 502 is connected to the next node device 4, and is used for inputting the one optical signal to the next node device 4 when the node device 5 fails. The optical splitting device 501 in this embodiment is a 1:2 passive optical splitter. The optical switch device 502 is an active optical switch, and the active optical switch has two optical signal access ports (A, B), the default setting of the optical switch is at the A end, and the A end interface is used to access The one optical signal directly output by the optical branching device, the B terminal of the optical switch is connected to the optical signal output by the electro-optical conversion module.

When the node device is working normally, the switch pole of the optical switch is placed at the B terminal through the control line, and the A terminal is in a non-conducting state at this time, and the optical signal output from the optical branching device cannot be input from the A terminal;

When the node equipment breaks down, the switch pole of the optical switch cannot be controlled through the control line. At this time, the switch pole of the optical switch is at the A terminal, and the optical signal output from the optical branching device is transmitted to the A terminal after being input from the A terminal. in the next node device.

Are there other alternative solutions for the passive optical splitter and active optical switch in the present invention to achieve the same technical function, and must they be passive optical splitters or active optical switches to achieve the purpose of the invention? If other devices or components can be realized, please provide them as much as possible.

Each of the node devices has a photoelectric conversion module, and the other optical signal output by the optical branching device is input to the photoelectric conversion module in the node device for data processing in the device; the optical switch device will The one optical signal output by the optical branching device is input to the photoelectric conversion module in the next node device for data processing in the device.

In the embodiment of the present invention, a passive optical splitter and an active optical switch are added to the original node equipment structure, and the optical signal enters the device through the optical splitter. switch, and the other is connected to the photoelectric converter for data processing in the device. The optical switch has two gears as shown in Figure 4, A and B, two optical signal input terminals. The default setting of the optical switch (that is, when the optical switch is not driven by electricity, that is, in the non-working state) the switch pole is at the A terminal, and the A terminal The terminal interface is used to connect the optical signal directly output by the optical splitter, and the B terminal of the optical switch is connected to the optical signal output by the electro-optical conversion module.

As shown in Figure 3, when the node equipment is working normally, the switch pole of the optical switch is connected to the B terminal through the control line. At this time, the A terminal is in a non-conducting state, and the optical signal output from the optical splitter cannot be input from the A terminal; As shown in Figure 4, when the node equipment fails, the switch pole of the optical switch cannot be controlled through the control line. At this time, the switch pole of the optical switch is at the A terminal, and the optical signal output from the optical splitter can be input from the A terminal and then transmitted to the The next node device is connected, thus ensuring that any fault-free node device can transmit the signal, which greatly enhances the communication reliability of the optical fiber ring network topology. By adopting the technical scheme of the invention, the reliability of the optical fiber ring network can be greatly enhanced, thereby increasing the reliable operation of the system.

In the present invention, an optical branching device and an optical switch device are added to each node equipment structure in the original optical fiber ring network system. The optical branching device divides the optical signal received by the node device into two identical optical signals, one of which is The optical signal is directly input to the optical switch device, another optical signal is input into the node device, and the optical switch device is connected to the next node device for inputting the one optical signal to the next node device when the node device fails. node device. The invention enables the signal to be transmitted to the next node device when the node device is faulty, thereby ensuring that any faultless node device can transmit the signal, and greatly enhancing the reliability of the topology communication of the optical fiber ring network.

A kind of optical fiber ring network communication method, it is characterized in that: this method comprises the steps:

S1: One end of the network management device is connected to the input end of the optical branching device of a node device, and the other end is connected to the port of the optical switch device of a node device; the port of the optical switch device of the previous node device is connected to the optical branching device of the next node device Device input connection;

S2. The optical branching device of each node device divides the received optical signal into the same two optical signals, wherein one optical signal is directly input to the port A of the optical switch device, and the other optical signal is input to the The photoelectric conversion module is output to the port B of the optical switch device by the electro-optic conversion module after being processed by the data processing and control module;

S3. When the node device is working normally, the switch pole of the optical switch device is at port B. At this time, the port A end is in a non-conductive state, and the optical signal output from the optical branching device is transmitted through the port B of the optical switch device. to the next power-saving device;

S4. When a node device fails, the switch pole of the optical switch device is at port A, and one optical signal output from the optical branching device is transmitted from port A to the next node device.

In the system and method of the present invention, an optical branching device and an optical switch device are added to each node equipment structure in the original optical fiber ring network system, and the optical branching device divides the optical signal received by the node device into two identical optical signals , wherein one optical signal is directly input to the optical switch device, the other optical signal is input to the node device, and the optical switch device is connected to the next node device for inputting the optical signal when the node device fails to the next node device. The invention enables the signal to be transmitted to the next node device when the node device is faulty, thereby ensuring that any faultless node device can transmit the signal, and greatly enhancing the reliability of the topology communication of the optical fiber ring network.

The specific embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and those skilled in the art can make various modify or remodel.

Claims (8)

1. an optical fiber ring network communicating node device, comprises photoelectric conversion module, data processing and control module and electrooptic conversion module; It is characterized in that, also comprise optical branch device and optical switch device; Described optical switch device is provided with port A and access interface B; Described optical branch device, for the light signal received is divided into identical two ways of optical signals, wherein a road light signal directly inputs the port A of described optical switch device; Another road light signal inputs described photoelectric conversion module, is exported to the port B of described optical switch device after data processing and control module process again by electrooptic conversion module.

2. node device according to claim 1, is characterized in that, described optical branch device is the passive Light splitter toy of 1:2.

3. node device according to claim 1, is characterized in that, described optical switch device is active optical switch.

4. optical fiber ring network communicating node device according to claim 1, is characterized in that, port-for-port A is connected in described optical switch device power-off, and port-for-port B is connected in energising.

5. an optical fiber ring network communication system, is characterized in that, comprises network management device and multiple node device, and network management device and multiple node device are in turn connected to form a closed ring topology; Described network management device one end is connected with the optical branch device input of a node device, and the other end is connected with the optical switch device port of a node device; The optical switch device port of previous node equipment is connected with the optical branch device input of a rear node device.

6. an optical fiber ring network communication means, is characterized in that: the method comprises the steps:

S1: network management device one end is connected with the optical branch device input of a node device, the other end is connected with the optical switch device port of a node device; The optical switch device port of previous node equipment is connected with the optical branch device input of a rear node device;

The light signal received is divided into identical two ways of optical signals by the described optical branch device of S2, each node device, wherein a road light signal directly inputs the port A of described optical switch device, another road light signal inputs described photoelectric conversion module, is exported to the port B of described optical switch device after data processing and control module process again by electrooptic conversion module; S3, when node device normally works, the switch pole of optical switching device at port B, now port A end be in nonconducting state, the road light signal exported from described optical branch device is transferred to next energy-saving device by the port B of optical switching device;

S4, when node device breaks down, the switch pole of optical switching device is in port A, and the road light signal exported from described optical branch device is transferred to next node equipment from port A end.

7. optical fiber ring network communication means according to claim 6, is characterized in that, described optical branch device is the passive Light splitter toy of 1:2.

8. optical fiber ring network communication means according to claim 6, is characterized in that, described optical switch device is active optical switch.