Faster over 300 metres

Infineon Technologies has demonstrated the first 10 Gigabit Ethernet (GbE) XPAK-compliant transceiver module capable of operating through over 300 metres of low-bandwidth multimode fibre.

Infineon Technologies has demonstrated the industry’s first 10 Gigabit Ethernet (GbE) XPAK-compliant transceiver module operating over 300 metres of low-bandwidth multimode fibre.

The XPAK optical transceiver used a 1310 nm laser with EDC (electronic dispersion compensation) technology to extend the distance over which 10 GbE data can be transmitted without error.

According to Infineon, the demonstration proves the feasibility of using single-laser transceivers for high-speed transmission over the installed low-bandwidth fibre infrastructure, which preserves capital investment while increasing capabilities.

The use of EDC-enabled transceivers to upgrade networks without replacing fibre will also help accelerate adoption of 10 GbE technology, with its greater bandwidth.

The EDC-equipped Infineon XPAK optical module is said to have shown the ability to transmit 10 Gbps data over up to 300 meters of virtually any grade of legacy multimode fibre. According to the IEEE 802.3 High Speed Study Group, more than 80 percent of the world’s current enterprise fibre infrastructure is based on this type of low-bandwidth multimode.

The EDC technology is said to compensate for dispersion and other impairments that cause inter-symbol interference and performance degradation.

Without EDC, end-users need to either deploy high-cost, high-bandwidth multimode fibre to reach 300 meters at 10 Gbps, or use a solution that requires multiplexing four separate lasers of different wavelengths, which results in greater complexity, higher power dissipation, increased costs and reduced reliability.

First samples of Infineon’s modules with integrated EDC will be available in the first half of 2004.

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