Patent ID: 7206484
Filing Date: 2007-04-17
Classification: G02B

Abstract:
1. A dispersion compensator comprising: a dispersion-compensating optical fiber having a chromatic dispersion of −140 ps/nm/km or less at a wavelength of 1.55 μm, and a mode field diameter of 5 μm or less at the wavelength of 1.55 μm; a housing having a volume of 500 cm an accumulated chromatic dispersion of −1200 ps/nm or more but less than −600 ps/nm at a wavelength of 1.55 μm, wherein said dispersion-compensating optical fiber comprises a center core part extending along a predetermined axis and having a predetermined maximum refractive index, and a cladding part, provided on an outer periphery of said center core part, having a refractive index lower than that of said center core part, and wherein said center core part has a relative refractive index difference of 2.4% or more with reference to the refractive index of said cladding part.