Prysmian help Italy lead the world fiber industry

Prysmian Italy was embarking on fiber production, focusing on the country's ultra-wideband communication network construction. It is reported that Prysmian has completed production centers Battipaglia €30 million investment to further improve their competitiveness. The center currently has a world-leading production capacity, technology and expertise.

Prysmian is the world's communications and cable industry leader, it is the world's five production plants (Italy, France, Netherlands, USA, Brazil) average production of nearly 30 million km fiber a year, including 9 million kilometers Italian production in order to achieve their global strategic wiring project.

Battipaglia optical fiber manufacturing plant employs 300 highly specialized staff, is the only Italian manufacturer of optical fiber.

Innovation and productivity are the core competitive Prysmian fiber strategy. Prysmian recent investment Battipaglia 200 micron fiber, this product allows an unprecedented density fiber is installed in the cable being. In this system innovation center, Prysmian is constantly developing new wiring and connection technology based on application requirements.

"Prysmian is the only Italian manufacturer of optical fiber. With our Italian qualified claiming to have a leading position in optical fiber such strategic high-tech fields." CEO of the Italian company Prysmian Hans Hoegstedt said, "in order show how Italy has a leading-edge technology, expertise and capacity to develop ultra-broadband network project, we have launched a communications campaign called L'Italia mostra la sua vera fibra In addition, the production of tomorrow in Battipaglia plant, we will showcase the latest technologies at the conference. "

"The new generation fiber-optic network and is destined to become the whole economic system upgrade infrastructure, improve the future of Europe is also a key point in Italy's competitiveness. With the popularity of next-generation networks, the demand for high quality optical fiber is expected to grow exponentially in the coming years. "Nicola Scafuro Prysmian Manbadipa Seville plant manager, said the installation of speed fiber-optic communications network has now reached 300 million km/year, while in 2006 only only 95 million kilometers, which confirms that it is a positive whole industry, the fastest growing fields.

ODN

ODN is an optical network based on PON equipment, mainly between OLT and ONU provide optical transmission channel. From the function points, ODN from the central office to the client can be divided into the feeder, wiring, home line subsystems and optical fiber cable terminal subsystem.

ODN network construction cost is relatively high, up to 50% to 70% of the total investment is FTTx investment focus. And also the difficulty of FTTx management. ODN use more P2MP topology, the network connecting nodes and more complex network management. Fiber sensitive than copper, more easily damaged. Therefore, ODN efficient construction, operation and maintenance of critical need an intelligent, accurate management solutions to ensure ODN network has been fully utilized, effective long-term investment protection.

As we see in the supermarket food and other commodities have the same bar code can be added in the fiber head tag of fiber for effective management, we call EODN; now this technology has become the major carriers and ITU-T, etc. standards organizations to discuss and focus.

Is it possible without changing the ODN passive features to address two core issues ODN managed to achieve ODN automated management?

iODN

Huawei proposed iODN (intelligent ODN) solutions. In iODN solution, ODN intelligence product adds the following features: Fiber identity management, port state collection, the port to find instructions, visualization tools PDA.

iODN solution enables automatic entry ODN fiber connection and management information to ensure accurate and timely information to synchronize inventory system. At the same time, through intelligent LED indication PDA visualization software and iODN device can achieve optical fiber Automation to Find, precise operation, which greatly improve the efficiency of operation and maintenance, ODN network to achieve efficient operation and maintenance. In addition, based on iODN architecture, based on the inventory system can develop a variety of value-added applications, to achieve the construction, operation and maintenance of the whole process automation.

eODN

ZTE launched the "eODN (Easy ODN)", GIS geographic information systems and R intelligent identification system based on. ODN network cycle of the system in all aspects of planning, design, construction and maintenance, the pre-planning, construction and ongoing maintenance mid-effective to combine the use of contactless smart fiber management systems to improve efficiency and achieve the various departments to share information and to optical fiber seamless transfer, let ODN network construction has become a dynamic virtuous circle, to ensure its sustainable development.

sODN

FiberHome adhere to the actual situation from the traditional starting ODN design products, we proposed "sODN (smart ODN)" complete solution.

System fully into account the existing traditional ODN operation and maintenance characteristics, and strive to ensure that existing employees can easily adapt to new intelligent ODN intelligent management mode implementation. System combines low power consumption, long life, easy to maintain, by means of the new information to make ODN network to become an organic whole, improve customer perception.

Application of fiber optic connectors and terminals

Fiber optic connectors and A/V industry BNC connector commonly used by different, with fiber optic technology continues to mature and get progressive development. Effect of copper connector signal loss of AV systems are generally not large, but the optical connection is different, its transmission system in each interface will play a very big influence. Let's look at the physical fiber optic connection problems arising from optical fiber transmission equipment itself may direct connection, but in some cases, most or almost all connectivity options are all man-made fiber transmission personally. Semaphore fiber optic cable in the signal transmission process of the loss is mainly determined by the quality and type of use of fiber optic cables, each connecting terminal will have some signal loss. Depending on the type of fiber optic connector selected by the user, the connection end signal is lost a combined total may exceed the amount of signal loss of the fiber optic cable itself.

Maintain a normal operation

In the optical fiber system design, system to normal operation, it reached very good results, in the system design, we need to consider the system may occur some unexpected problems, and let the system has reached normal operating results. In the system design, we have to consider the worst system possible situation and plan accordingly, expecting better operating results. Fiber Optic Connector designer must keep in mind to this idea. In system design, security, stability, system connection requires smooth fiber ends, Founder. The connection between the client and the client must be accurate and correct, or even to achieve micron precision, millionths of a meter. Commonly used diameter multimode fiber from 50-62.5 microns and single-mode fiber is only 8-9 microns in diameter. This compared to the diameter of a human hair in diameter (17-180 microns), showing no trace of error can bring in catastrophic losses.

Precision optical fiber connection to the equipment requirements are very strict, so connector must be very clean. Fiber optic connectors and accessories are usually mounted on a set of house, a finger print or external dust might seriously affect connector performance, even lead to transmission failure, therefore, when the connector is not connected, it should be kept in clean protective cover in.

In connection, we should also be fiber optic connector wedge tight, in the present all the fiber optic connector design, through the "collar" to ensure accurate at the time with the connector. Viscose fiber terminals or by crimping the ferrule inside the confining, as a permanent member. After inserting a built-in optical fiber, put the smooth ferrule end mill for fiber optic connectors provide a smooth interface. Rings are usually made of relatively hard material such as ceramics, of course, it may be stainless steel, plastic or tungsten carbide material, SC, ST and FC common ferrule diameter 2.5 mm, LC universal ferrule diameter 1.25 mm. Since the feature rings can be produced in accordance with the requirements of precision, it will become the primary fiber optic connector to determine important characteristics. Among the many connections ferrule, the spring-loaded ferrule ensures the container is connected coaxially aligned between the optical fiber and LED or laser source.

With the expansion of technology development and application of fiber optic connectors are also developing rapidly. Fiber optic connectors used now on the market there are about 12 kinds and even more, each of which is to meet the specific needs and came into being, of course, there are some technical limitations. Now the market trend is mainly towards the moderate price, compact connector model development to support greater transmission density of new transmission distribution system requirements. As user expectations, as the continuous development of the telecommunications industry also contributed to the large-scale application of optical fibers is due to various types of communication and entertainment services on fiber-optic connections due to the rapid growth in demand largely.

Consider terminal

Traditionally, fiber optic terminal is generally slower, the price is higher, the equipment requirements and technical requirements are high. When considering a single-mode fiber optic cable in the terminal, you should take into account several factors in this regard. In some cases, we can choose some already set in accordance with various fiber types good terminal cables.

Tailor-mount applications, we can select a specific terminal, however, adopted after splicing tools, you can reduce on-site terminal extension of the length of the single-mode fiber, reducing the use of the equipment and technology of the quantity demanded. After the multimode fiber optic cable, the new splicing method using a simple optical fiber cutting method, will be assembled into a pre-designed cable connector / cable. This method is very simple, but the fiber-to-fiber connectors butt joints usually uses a special optical gel, so that fiber optic terminal curdle.

High-density fiber management faces two major challenges to protect and preserve

According to the survey report shows that the number of data center fiber port applications worldwide over copper ports, the user is faced with a growing number of fiber ports in the cabinet and more, increasing density of the status quo. High-density fiber optic management of large data era is facing two major challenges.
    
With the explosion of data traffic, the number of people on the data transmission and capacity have higher requirements, the construction of large-scale data centers more and more, 10G transmission also has been used. It is understood that: implementation of 10G transmission including 10G fiber and 10G copper types. Twisted pair, for example, the current mainstream Cat6A and Cat7 cables to support Gigabit transmission as far as 100 meters. Per port power consumption of about 10W, delay time is about 4 microseconds.
    
The 10GBase-SR short-wavelength fiber-optic module commonly employed by OM3 laser optimized multimode fiber as far as 300 meters can support Gigabit transmission, device power consumption per port about 3W, the delay time of less than 1 microsecond. So comparison, the fiber optic network has low latency, long-distance, low power consumption advantages.
   
First, the physical protection of optical fiber and cable. Excessive bending loss is the main reason for the extra light signals in optical fibers, optical fiber bending loss visible due to become great curved loss, thus protecting the bend radius is an important factor to ensure fiber performance. General industry requirements for fiber bend radius during installation is at least 20 times the diameter of the cable, if you want to maintain a fixed state at least 10 times, most of the time when the excess coiled fiber jumper bend radius not meet the requirements.
   
Fiber optic cables, particularly fiber optic patch cord is fragile, you need to pay attention to physical protection, with particular attention to the transition part of the fiber - pigtail splice and jumper root protection, high-density fiber management system should have special protection and welding node pigtail redundant storage capabilities.
   
Second, to maintain the data center. Life cycle data center cabling systems usually about 5-10 years, in this time period cabling system will experience a lot of maintenance work, including additions and changes. If the wiring system when completed, jumpers clean and beautiful, but after becoming messy, it is the lack of planning for cable routing and design, lack of alignment channel, jumpers nowhere to go only disorderly accumulation, and therefore cause a lot issues, such as bend radius are not protected, can not find the jumper on the end position can waste a lot of time to find, resulting in waste of resources unused port.
    
Third, high-density fiber optic cabling system to be considerate. A well-designed, high-density fiber optic cabling system to maximize the reduction of system maintenance time and improve reliability, so that the wiring system to provide maximum available capacity throughout the life cycle.
   
To do this, we first want to provide optimized design of the cable routing channels, channel optimization design should include jumper bend radius protection, cable has enough capacity to be easy to add and remove. In addition the size of the high-density fiber optic connector fiber management system compact and tightly packed on one fiber port swap operation can not affect the adjacent fiber port.

Advantages of fiber access

1. capacity: fiber optic frequency, higher than the cable 8-9 orders of magnitude, so the development of large capacity.

2. attenuation: optical fiber attenuation per kilometer than the capacity of the largest telecommunications coax more than an order of magnitude lower.

3. Small size, light weight, is also conducive to construction and transportation.

4. Anti-interference good performance: the optical fiber from strong electricity, electrical signals and lightning interference. Anti-electromagnetic pulse is also very strong, good privacy.

5. saving non-ferrous metals: general communication cable to consume large amounts of copper, lead, or aluminum and other nonferrous metals. Optical fiber itself is non-metallic, the development of optical communications will save a lot of non-ferrous metals.

6. Expansion convenient: a bandwidth of 2Mbps standard fiber lines are easy to upgrade to 4M, 10M, 20M and 100M; therebetween without replacing any equipment.

How to identify the fiber quality is good or bad

As we all know, in the network cabling, since much lower light transmission loss in optical fibers than the electrical conduction losses in wires, fiber has frequently been used as the information transmission over long distances. But there are a lot of people do not know how to distinguish between good and bad quality of the fiber. Today, 10Gtek transceiver here and from five aspects you elaborate on how to identify the fiber quality is good or bad.

1, loose tube
Loose tube fiber optic cable installed with the general use of PBT polymer materials (polyethylene terephthalate), such as loose tube high strength, deformation and aging. Loose tube cable is of poor quality and sometimes substitute other materials, diameter thin, hand pinch on the flat, and drinking straws same, can not afford the protective effect of fiber.

2. Wire
The cable wire is mainly used to protect the optical fiber from mechanical tension. Good cable typically use high modulus phosphide steel wire, short-term rally is 1500N or 3000N. The poor quality cable will use a small diameter wire or wire instead of the ordinary, so that one easily rust; on the other hand, due to the tensile strength far less than 1500N, when construction could strain the fiber. High modulus phosphide steel wire general was gray, good toughness, easy to bend; and replacement of wire and other general kneading can be bent and a long time in the hands of two hanging cable box will rust break.

3, steel, aluminum
Cable in steel, aluminum is mainly used to protect the fiber from mechanical side pressure, moisture and other effects, better cable will generally use chrome strip. Low-quality fiber optic cable to rust treatment done on only one side of ordinary metal or called black (uncoated steel), replacing chrome strip, over time, will appear in the corroded cable, fiber optic hydrogen loss will increase, and because its easy to constitute a separate integrated sheath bonded sheath, tidal performance is very poor; some places instead of tinned steel chrome strip, tin strip surface of vaginal discharge, bubbles, etc. is inevitable, so the humid atmosphere and surface condensation or flooding conditions, prone to corrosion, especially corrosion faster under acidic conditions. Tin layer poor heat resistance, melting 232 degrees Celsius only, applications when due to high temperature extrusion jacket, making peeling strength uncertainty affecting the cable moisture resistance. The melting point of chromium up to 1900 degrees Celsius, chemically very stable at room temperature in air or immersed in water will not rust, corrosion resistance is very good, because the surface passivation layer is formed so easy oxidation resistance to environmental good performance. Aluminum is generally appear unqualified thermal paste method instead of coating aluminum casting aluminum qualified film, which will also affect cable performance.

4, jacket
Cable sheath is necessary to adapt to many different complex climatic conditions, but also to ensure the long-term (at least 25 years) stability. Cable jacket not only have a certain strength, low thermal deformation, abrasion, water permeability, heat-recoverable and friction coefficient, but also resistance to the environment should be strong, good materials performance and processing characteristics. Less or with poor sheathing material will appear after though through factory acceptance, but the quality defects period of time cracking, water seepage, if the use of recycled plastics to replace quality polyethylene jacket material is more serious. Made of high-quality fiber optic cable sheathing materials, after a cable jacket smooth and bright, uniform thickness, no bubbles, otherwise there will be cable coarse skin phenomenon, and because many impurities in the raw materials, a closer look can be found in the cable jacket has a lot of very small Hang wow, and because thin, the entire outer diameter of the cable is much smaller than the high-quality fiber optic cable. Indoor fiber optic cable, usually made of high quality flame retardant PVC, appearance should be smooth, bright, good flexibility, easy to peel; otherwise there will be poor skin finish, easy and sleeve fiber, aramid adhesion phenomena.

5, ointment
There are cream and ointment fiber cable cream, under normal circumstances, should fill the entire fiber loose tube cream, ointment cable cable should be filled every crevice of the cable core under pressure. Now there is sufficient fiber paste or less half-full approach, then there is only cable cream in the core layer outside wiping, while others are not sufficient charge in the middle of the cable ends. This will make optical fibers are not well protected, affect the transmission performance of optical fiber attenuation, poor water resistance less than the national standard, once the cable accidental seepage will cause the whole link seepage scrapped. And under normal circumstances, even if the accident repair of seepage water seepage also only some can, and you do not need to start over. (National standard water-blocking performance: three meters of fiber optic cable, one meter of water pressure twenty-four hours without water seepage) will also appear if the above problems with poor ointment, and the ointment may be due to poor thixotropic , will cause microbending loss optical fiber, the entire link transmission characteristics of failure; analysis of molecular hydrogen evolution reaction if H ointment and cable acidic will occur in metallic materials, and fiber attenuation increases rapidly in case of H, causing the entire link interrupt transmission.