Application of POF fiber cabling system in LAN

I. Overview

Nowadays, with the development of information technology, data transmission is very important, and it is an important subject of materials science to seek faster speed and more information transmission media for the application of high-speed computer local area network, conference TV and VOD. At present, in the process of information transmission, it is possible to use copper wire with metal as medium, quartz fiber with quartz glass as medium, and new plastic fiber with polymer material as medium. Copper cable is gradually replaced by optical fiber because of its inability to support high bandwidth requirements for transmission and the poor ability to resist electromagnetic interference. Long-distance information transmission of quartz fiber has been widely used, however, although quartz fiber, which is used to replace copper as transmission medium, has shown some advantages in long-distance transmission due to its low loss and high immunity to electromagnetic interference, it is difficult to connect in the optical fiber to the user and the dense short distance application of fiber to desktop. Expensive, installation and maintenance costs of high reasons, can not be widely promoted.

At the same time, with the rapid development of the computer network of the office environment, the application of high number rate to the desktop is more and more common, and the LAN speed is shifted from 10Mbps to 100Mbps, and will soon develop to 1000Mbps. The wiring system that transmits data for the computer network, in the link floor main line, because the quantity is few, the present widespread use multimode quartz fiber, but in the horizontal direction, does not have a suitable medium to be able to provide the sufficient bandwidth, simultaneously also has the installment to be convenient, the cost is low, Strong anti-interference ability and other advantages of the material. The new fiber-optic network with plastic optical fibers as the transmission medium has all the advantages mentioned above. The diameter of the plastic fiber is generally 0.3-3mm, large diameter suitable for connection, light coupling efficiency is also high, at the same time also has a soft, flexural, vibration resistance, radiation, cheap, easy construction advantages can replace the traditional quartz fiber and copper cable, is ideal for the connection point of more local area network.

The use of plastic optical fiber construction of large-scale local area network, the need for two products, namely, passive wiring connection products and active plastic optical fiber network equipment

Second, POF Fiber cabling System Solutions

The integrated wiring system using POF fiber can be used as the solution of Intelligent building and computer network transmission. Wiring has been widely used since its inception, the system of a building within the wiring, or a computer network connection, according to its various parts in the building location and function of different, divided as follows several sub module system: (Learn computer)

1. Working area Subsystem

A workspace is a place for a conversation between a worker and a communication device. It includes a variety of hardware that connects client terminals, PCs, or workstations to communications outlets.

2. Horizontal wiring Subsystem

Horizontal wiring is the part of the system that connects the communication to the working area, and the products used mainly include copper cables (4 pairs of twisted pair) or fiber optic cables (indoor multimode or Single-mode).

3. Inter-communication Subsystem

Communication between communications equipment (mainly including local area network hubs or switches) as well as horizontal cross connection (cable termination and cross intercept cabling hardware), horizontal cross connection for backbone wiring or communication equipment and horizontal cabling between the connection.

4. Vertical Backbone Subsystem

The backbone wiring is the main line system connecting each floor in the system. It consists of copper cables (large logarithm copper), multi-core optical cables or combinations of both.

5. Subsystems between devices

The device generally places voice and data equipment (PBX, various network servers, etc.) and is the main intersection of the primary node of the network, where the main cross connection provides a cross connection between the communication device and the horizontal cross connection or the intermediate cross connection in the large building or park environment.

POF Fiber Integrated Cabling solution, the vertical trunk is generally used in traditional quartz fiber, such as multimode optical cable. POF Plastic optical fiber is mainly used in the horizontal system of many connection points, which can solve the requirement of large data transmission from network switch to each working area computer in horizontal direction. As shown in Figure II. Horizontal data connection, that is, fiber communication to the desktop connection, due to the number of connections, the use of traditional quartz fiber in terms of cost, engineering, management and maintenance are more difficult to achieve universal application. and the diameter of the POF plastic fiber is large, 1mm, it is easy to realize the end-connection, coupling and laying construction of the fiber, the minimum bending radius of the cable and the requirement of installation environment are low. So in high-end all-optical wiring system, gigabit network system, as well as anti-interference, signal leakage of the wiring system project, can be more than other types of transmission lines more advantages.

POF Plastic Fiber Optic products

A) POF Plastic horizontal Cable

POF Plastic horizontal cable is used in the horizontal subsystem of cabling to realize the connection between the terminals of each work area and the equipment of floor communication. Generally 2-core. Internal for the diameter of 1mm plastic optical fiber, external jacket using flame-retardant polyethylene material. Optical cable for the whole plastic structure, the use of no grounding.

b) POF Plastic fiber plug

The plastic optical fiber plug is the connectors of the plastic optical cable connected with the equipment.

c) POF Plastic fiber optic jumper

The plastic optical fiber jumper is the cross connection between the optical fiber distribution frame and the equipment, or the connecting line between the work area fiber socket and the device.

d) Plastic Fiber logo jumper

The use of plastic fiber logo jumper, can be in the wiring rack a large number of jumpers easily find each jumper end-to-end connection, reduce maintenance work. This jumper is in the conventional twisted-pair jumper or fiber jumper to lay 2 POF plastic optical fiber, when the jumper at one end (external) with a red light irradiation, at the other end of the jumper, there appear eye-catching red highlights.

e) POF Optical socket

POF Optical fiber sockets are plastic optical fiber wiring system work area information export. The panel is a dual-port structure with a dust-proof design and identification on the socket itself.

f) POF Plastic fiber Coupler

POF Plastic fiber coupler is used to connect 2 fiber connectors, POF fiber coupler as a whole plastic finished products, standard modules. It can be installed in 19 "wiring racks and also suitable for POF optical sockets."

g) POF Plastic fiber distribution frame

Optical fiber distribution frame is a fiber-optic terminal equipment, generally used in communication room. It is used to realize the cross connection management between optical fiber and optical fiber, optical fiber and equipment. POF Plastic optical fiber wiring frame for the standard 19 "cabinet-type, built-in fiber-optic connection panel, the cable frame height of 1U (1.75 inches), can accommodate 16 plastic fiber. At the same time, the wiring box is compatible with St, SC and FC adapters, and can also be used to simultaneously end multimode or single mode optical cables.

Third, plastic fiber optic network

In the modern intelligent building interior and various office environment, the computer network is widely used, especially the Ethernet technology as the core LAN technology, occupy most of the market. In various networks, the number of nodes and ports is more and more, and the transmission speed is more and more fast. Currently from 10Mbps, 100MBps has begun to 1GBps development. All fibre port devices are also starting to evolve from a backbone connection to the desktop. At present, the backbone of the network mainly uses quartz fiber to ensure sufficient transmission bandwidth, and workgroup and client due to a large number of connections, there is no suitable all-optical solution. and plastic optical fiber network products in the LAN is mainly to achieve the workgroup switch and computer equipment network high-speed connection.

In the whole optical network, the backbone of the network generally uses quartz fiber network equipment to ensure the transmission distance. and between the Working Group and the workgroup, between the Working Group and the user, uses the plastic optical fiber equipment, realizes entire local area network uses the light to transmit the information.

1. Plastic Fiber Optic Department switch

This switch is a departmental-level exchange device. Multiple Ethernet network Fibre ports can be provided. High-bandwidth, high-performance fibre-optic connections can be provided between workgroups or within workgroups, allowing users to access the entire network resource more quickly. Resolves bottlenecks in network bandwidth between your computer and your workgroup switch.

2. Plastic Fiber Optic Card

PCI network card with Ethernet plastic fiber interface, compliant with IEEE Standard, Plug and Play, support Full-duplex mode.

3. POF-RJ45 Fiber Transmitter

POF-RJ45 Optical Transceiver is an Ethernet fiber interface to the RJ45 converter. It provides a POF fibre port and a RJ45 port with a connecting interface. It converts the electrical signals of an Ethernet network into light signals that can be transmitted on POF plastic fibers, and vice versa. POF-RJ45 Optical transceiver can be used as an independent device to provide interface conversion for Ethernet network devices without POF fiber interface.

Iv. Summary

The development and development of plastic optical fiber materials and plastic optical fiber network equipment will provide better solutions for higher speed network connections. At present, many companies in the world, standardization associations have joined the ranks, and put a lot of manpower and material resources. POF Plastic fiber as a copper and quartz fiber replacement products, its application has been supported by a variety of technical standards, such as Ethernet, 1394, ATM and other relevant POF technical standards have been developed. It can be foreseen that in recent years, POF plastic optical fiber technology with its unique technical characteristics, in the integrated wiring, LAN network, multimedia applications will have a broader development prospects.