OREANDA-NEWS. March 09, 2012. Fujitsu Limited, Fujitsu Laboratories Limited and Fujitsu Research and Development Center Co., Ltd. of China today announced the development of a digital signal processing algorithm to compensate for waveform distortion in long-haul transmission systems of over several hundreds of kilometers. This, in turn, enables a roughly twenty-fold improvement in the compensation ability per circuit size compared to typical existing technology, representing a considerable improvement of approximately three times compared to circuits previously developed by Fujitsu. As a result, the new technology has succeeded in extending the long-haul operating range of optical signals. By reducing the energy consumption of compensation circuits by two-thirds, the new technology also helps cut energy consumption throughout an entire network.

For long-haul transmission systems that are used in the trunk-line networks of telecom carriers and networks that tie together large datacenters, the new technology does not require signal regenerators making for high-speed transmission systems that are low cost and energy efficient. This will thereby pave the way for networks supporting next-generation smart phones and cloud services.

The receiving-side digital signal processing LSI used to measure and verify the effectiveness of the developed technology were provided by the "R&D on High Speed Optical Transport System Technologies" project sponsored by Japan's Ministry of Internal Affairs and Communications. Part of this result have been achieved by the Commissioned Research for "Research and Development on Photonic Transparent Transmission Technologies (л-Reach Project) and Universal Link Project R&D" of National Institute of Information and Communications Technology (NICT), Japan.