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Optical data transmission

Over the recent period, the development of IT and telecommunications has been progressing in giant steps, and the trend continues into these days. Over the recent decade data transmission speed has almost doubled every year, as more and more users (and simultaneously with that, applications requiring increasingly higher bandwidth) have connected to the networks.

The only way to fully meet the ever-increasing needs for bandwidth is the application of optical fiber networks.

Within buildings, at the "Fiber-to-the-Desk" connections of the LAN networks the glass fibers starting from the optical switch run directly as far as the computer of the user, ensuring a high level of data transmission service.

In WAN networks with optical link distances of 10-20Km the two state-of-the-art technological approaches are Active Ethernet and PON (Passive Optical Network), or more recently G-PON (Gigabit Passive Optical Network).

If an active Ethernet solution is applied, the network is made up of several switches with optical ports. The optical section may end in the street already, or in a cabinet, on curb (FTTc), or alternatively, it may run as far as the detached house or building (FTTh, FTTb).
A common feature of PON-based solutions is a network with shared optical access, where only passive optical splitters are installed between the central side (OLT) and the customer side (ONT).

With the advance of technology, the price of optical cables and system elements have been decreasing gradually, thus the scope of possible applications keeps expanding. Today it is possible to ensure a transmission speed of 10Gb/s on optical fibers, using standard end user equipment available in the market.

According to their operation, optical cables may be multimode (MM) or single-mode (SM) cables. The cheaper systems based on multimode fibers are used to bridge shorter distances (up two 2 kilometers). Being a solution of higher quality, the building of single-mode systems is recommended for more remote data transmission channels with high bandwidth.

The DCS business unit provides turnkey solutions to requests for proposals on optical data transmission. Our qualified consultants handle everything from submitting an offer through the project management of implementation, all the way to the preparation of the documentation.

Benefits of optical transmission:

If single-mode optical fibers are used, the bandwidth is practically unlimited. The only limiting factor of the transmission speed is the current level of development of active devices. Therefore a single-mode optical fiber installed today may fulfill the needs for information transmission for several decades to come, there is no need for expensive and time-consuming recabling.

The low level of loss (SM: 0.25-0.4 dB/km; MM: 0.7-3.5 dB/km), enables the bridging of great distances (even 70 to 100 km with single-mode fibers), without the insertion of repeaters.

The longer cables provide more flexibility to the designers when the networks are provisioned, and the operators will also benefit from this, since optical fibers enable data transmission regardless of what the protocols or bandwidth are.

The metal-free optical cables ensure transmission insensitive to electro-magnetic disturbance. They can be applied in industrial environments, near high voltage discharges, for equipment used in power generators, or even in the environment of high performance transmitting facilities.

Since the data transmission channel does not contain metallic elements, there is no need for earthing and lightning protection is also guaranteed.

Optical fibers are also ideal for data protection, since it is impossible, or at least very difficult to tap a glass fiber, thus they can be used safely in systems working with or processing secret or non-public data (recommended for military applications or for data processing systems of banks and businesses).

The features of the transmission channel can be continuously checked using appropriate instruments, thus in the case of any change, unauthorized access or cable damage, the fault can be located accurately.

By the installation of reserve fibers and wavelength multiplexers subsequent capacity expansion can be performed without having to lay new cables.

The breaking strength of optical cables is very high, projected on the same cross-section it is higher than that of steel. This feature greatly reduces the time of cable drawing on longer sections.

WHY SYNERGON SYSTEM INTEGRATOR?

The legal predecessor of the business unit was a pioneer in the Hungarian optical cabling market. Our engineer colleagues know the systems of several manufacturers and have valuable experiences that are beneficial in design and implementation. We operate instruments calibrated for quality assurance, which means not only the more often used optical insertion loss measuring instruments, but also OTDRs.

We have lots of references in the area of design and implementation, we can react to high volume implementation capacities by the involvement of our tested sub-contractor teams.

MAJOR REFERENCES FOR THE SYNERGON GROUP