The distributed compensating optical fiber, the distributed compensating optical fiber which features that everything it is satisfied

摘要

PROBLEM TO BE SOLVED: To provide a dispersion compensating optical fiber in which a wavelength dispersion and a dispersion slope are compensated in a wide wavelength band, an effective core cross section area is large and the absolute value of the wavelength dispersion is large.;SOLUTION: In the dispersion compensating optical fiber having a so called W type refractive index profile with segments, the effective core cross section area in a wavelength band in use selected from 1.53 μm-1.63 μm is ≥20 μm2, a bending loss is ≤20 dB/m and the wavelength dispersion falls within a range of -70 to -100 ps/nm/km. Moreover, the dispersion compensating optical fiber, which is provided with a cutoff wavelength capable of substantially propagating a single mode in the above wavelength band in use and further in which a compensating ratio of the dispersion slope when compensating the single mode optical fiber in a length that the wavelength dispersion of the single mode optical fiber having zero dispersion wavelength of a wavelength shorter than the above wavelength band in use is compensated into zero becomes 80-120%, is composed.;COPYRIGHT: (C)2002,JPO