To create a professional FTTD cabling product Solutions

FTTD (Fiber to the Desk) cabling scheme is attributed to the overall FTTx system, FTTD as a high-level solution for cabling systems, the industry is well aware of the excellent transmission performance of fiber as a transmission medium, but also due to the high price of optical fiber active equipment, Led to few projects in the past few years large-scale use of FTTD wiring. In the rapid development of FTTX access network today, especially the development of FTTH networks, due to the overall industry in the scale of production effect, optical device products marginal cost is falling, especially in the cost of an important proportion of the optical transceiver (SFP) market price is a straight line of decline. The industrial environment of optical communication market is changing, also will function in the FTTD application of the growth rate, in such a market background, the wiring manufacturers need to launch a professional, characteristic of the FTTD wiring scheme, to help in the coming new round from the light product-led wiring pattern, to obtain their own competitive advantage. HDCSFTTD, a European-branded German Rosenberg, offers a holistic approach to the profession.

Body

In the current mainstream building wiring system, the backbone of the network data transmission is composed by the optical cable, no matter what horizontal wiring scheme is used, there is no substantial difference in the trunk, and as the wiring scheme of the FTTD, the main difference lies in the horizontal wiring system that is from the floor distribution between the IDF through horizontal wiring, The overall product solution to the desktop. The following is to Rosenberg HDCSFTTD wiring scheme As an example, talk about wiring each subsystem specialized product line composition.

IDF Floor wiring Room

As the optical fiber itself can support the transmission distance, such as the current market of OM3 300 fiber, due to 850nm in the low band for optical fiber optimization, can support the application of 300 meters, can also be compatible with 1000Mbps Ethernet 1KM transmission, so in the FTTD solution, No longer subject to the traditional copper cabling when the horizontal permanent link 90 meters distance limit, that is, in the IDF design, can be the original several IDF centralized management, as the IDF brought together the various levels of the work area of the small core number of cable such as 2 cores, 4 cores. Compared with traditional wiring, equivalent to a combination of several IDF from the level of the fiber, so, in a IDF wiring between the management of 200-300 work area point (equivalent to 400-1000 core) is a common situation, if the use of traditional optical wiring frame for wiring, will occupy more room wiring space. In the IDF floor wiring room, Hdcs introduced the modular high-density melt-fiber distribution frame, as shown in the following figure.

In the 5HU space, composed of 12 24-core fused-fiber modules, containing the melt fiber and disk fiber device, can easily be extracted from the module to install and maintenance. In the 5HU space can reach 288 cores of melt fiber and management, at the same time 5HU already contains the horizontal line loop, compared with the traditional optical wiring and ODF, can save about 60% of the wiring management space.

Horizontal Cabling System

FTTD wiring of the horizontal subsystem usually by the small core number of optical cables such as 2 core, 4 core from the IDF to the desktop, the use of optical cables, horizontal wiring is no longer limited, because the level of the system is a covert project, the reliability of optical fiber is very important. The current mainstream international brand wiring manufacturers are usually committed to more than 20 years of quality assurance, of course, in the normal use of the situation, optical cable is not easy to create problems, optical fiber can support the network application time than the copper cable can support more than 2 generation of network update needs, in the FTTD project, in addition to thinking about conventional optical cable performance, Also need to think about some unconventional problems can lead to network damage, because the cable diameter is very small, relatively small resistance to pressure, there may be like a mouse bite off the fiber optic cable and so on. If the horizontal subsystem is physical damage will not be repaired, if the rewiring will need to be partially renovated and a fuss. To this end, Rosenberg Hdcs developed a FTTD dedicated indoor armored cable, as shown in the following picture:

Armored Cable and ordinary optical cable, the outer sheath and 0.9mm internal branch cable between the use of small diameter threaded steel pipe, the use of this structure, horizontal cabling of the cable pressure can be upgraded from the traditional 300n/10cm to 3000n/10cm, is equivalent to ordinary optical cable 10 times times the resistance to lateral pressure strength, Can effectively protect the damage of rodents, if the outer layer spinning to glass yarn structure, the protection effect will be better. As a result of the use of armored cable molding, for the fire performance has been further improved, in the same external sheath material conditions, armored fiber optic cable fire performance will improve a level.

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