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We live in a scenario of constant technological evolution, where new solutions are developed every day to attend the new services, mainly for the roads.

On-line services, such as call box, radars, cameras, tolls, among others, need to be interconnected fast, safely and reliably. This interconnection is for the concessionary responsible for the road to have higher control on the vehicle and people traffic throughout its whole operation, thus being able to assure better service for its users.

In order to assure the reliability and the future needs, optical networks of the type PON (Passive Optical Network) are applied. This kind of technology eliminates all active equipment, which would be used in the network for the data transport. From the management and operational point of view, this eliminates the need to set up and maintain assets, in addition to generating a great reduction of failure points on the network, making it safer and more reliable.

Furukawa developed a complete solution of products, since active equipment at the center, passing through all passive elements, to the standard industrial active equipment, situated at the final point of the network. Regarding the network administration point, the EPON (OLTs – Optical Line Terminals) equipment allows transmitting data on the network at up to 1.25 Gbps upstream and 1.25 Gbps downstream. OLT performs the whole control of the equipment situated at the network final points (ONUs – Optical Line Units) in a centralized way. In the passive optical network, the optical fiber cables and accessories, such as splitters, splice/access boxes, connectors are inserted.

The main factor of a PON network is using an optical fiber, which can be used in up to 64 points/users by means of optical splitters, thus, improving the use of the resources implemented in the network. The splitters are used in the administration center, in the distribution or access boxes.

At the final point of the PON network, the ONU (Optical Network Unit) of the industrial type is located, developed exclusively for applications in high temperature environments without abundant power supply. The resistance of the Furukawa Industrial ONUs to temperatures is higher through the “Power Saving Mode” or “Sleep Mode” feature. This function allows the ONU to switch off parts of its electric circuit temporarily to reduce the energy consumption.

The EPON solution and its advantages

• Excellent cost-benefit ratio: This system optimizes the fiber occupation in the optical network, enabling lower investment through gradual release of fibers for future services.

• Open technology: Applications and services, which do not require own hardware or solutions. The topology of the passive optical network is based on the access technology EPON–IEEE 802.3ah and others, such as IP protocol and Ethernet networks.

• Easy expansion and integration: The use of the EPON technology enables more reliable communication among the different applications connected to the network.

• Energetic efficiency: Low energy consumption in specific applications, such as emergency telephones / call box.

• Monitoring: Full integration with surveillance camera systems, speed radars, vehicle count, variable message panel, toll booths, etc.

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