Phys. Rev. Lett. 96, 023902 (2006) [4 pages]Ultralong Raman Fiber Lasers as Virtually Lossless Optical Media
See accompanying Physics Focus By transforming the optical fiber span into an ultralong cavity laser, we experimentally demonstrate quasilossless transmission over long (up to 75 km) distances and virtually zero signal power variation over shorter (up to 20 km) spans, opening the way for the practical implementation of integrable nonlinear systems in optical fiber. As a by-product of our technique, the longest ever laser (to the best of our knowledge) has been implemented, with a cavity length of 75 km. A simple theory of the lossless fiber span, in excellent agreement with the observed results, is presented. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.023902
DOI:
10.1103/PhysRevLett.96.023902
PACS:
42.81.Dp, 42.55.Ye, 42.65.Dr
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