Patent ID: 6490397
Filing Date: 2002-12-03
Classification: G02B

Abstract:
An optical fiber whose chromatic dispersions are negative at all of the wavelengths in the range of 1450 nm to 1620 nm, having chromatic dispersions of âˆ’7 psÂ·nmâˆ’1Â·km1âˆ’or more but âˆ’1 psÂ·nmâˆ’1Â·km1âˆ’or less at a wavelength of 1450 nm, âˆ’12 psÂ·nmâˆ’1Â·km1âˆ’or more but âˆ’5 psÂ·nmâˆ’1Â·km1âˆ’or less at a wavelength of 1550 nm and âˆ’17 psÂ·nmâˆ’1Â·km1âˆ’or more but âˆ’6 psÂ·nmâˆ’1Â·km1âˆ’or less at a wavelength of 1620 nm.