Patent ID: 6876803
Filing Date: 2005-04-05
Classification: G02B,H04B

Abstract:
1. An optical transmission system having an optical transmission path comprising: a plurality, n, of connected sets of transmission path spans each formed of an optical fiber for transmission having positive wavelength dispersion and positive dispersion slope, and a dispersion compensating fiber having negative wavelength dispersion and negative dispersion slope, in an operating wavelength band; wherein, the dispersion slope and optical fiber length of the optical fiber for transmission and the dispersion compensating fiber satisfy equations (1), (2) and (3) for each transmission path span: and satisfy equations (4) and (5) for the overall optical transmission path:  c>a, d<b  (5) wherein in equations (1), (2), (3), (4) and (5), St i and Lt i respectively represent the dispersion slope and optical fiber length of the optical fiber for transmission in each transmission path span, Sd i and Ld i respectively represent the dispersion slope and optical fiber length of the dispersion compensating fiber in each transmission path span, and a, b, c and d are constants that define the residual dispersion slope.