19 August 2003 High-capacity Raman-amplified long-haul transmission and the impact of optical fiber properties
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Abstract
Recent laboratory experiments have demonstrated that distributed Raman amplification, advanced modulation formats, optimized dispersion maps, and forward error correction are key technologies for 10-Gb/s and 40-Gb/s DWDM terrestrial transmission over 2000 to 6000 km. The transmission fiber's Raman gain efficiency and dispersion properties are thus important parameters. Future high-bit-rate, high-capacity installed systems will require advanced transmission fibers to extend their reach to at least 2000 km, a distance also specified by a high-profile U.S. government optical networking project. This paper will address a number of the enabling fiber properties, including dispersion, dispersion slope, Raman gain efficiency, and polarization mode dispersion. In addition, several recent experiments will be reviewed, including demonstrations of high-spectral-efficiency terrestrial transmission at 10 Gb/s and 40 Gb/s over 4000 km and 3200 km, respectively, and 10-Gb/s transmission over 2400 km using 200-km spans.
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Lynn E. Nelson, Lynn E. Nelson, Benyuan Zhu, Benyuan Zhu, Lufeng Leng, Lufeng Leng, Jake Bromage, Jake Bromage, Hans-Jorg Thiele, Hans-Jorg Thiele, } "High-capacity Raman-amplified long-haul transmission and the impact of optical fiber properties", Proc. SPIE 5247, Optical Transmission Systems and Equipment for WDM Networking II, (19 August 2003); doi: 10.1117/12.512061; https://doi.org/10.1117/12.512061
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