Patent ID: 6766089
Filing Date: 2004-07-20
Classification: G02B

Abstract:
A low dispersion optical fiber characterized by;a difference between a maximum value and a minimum value of a dispersion value in a wavelength band having a bandwidth of 30 nm within a wavelength range of 1450 nm to 1650 nm of 2 ps/nm/km or less, a zero dispersion wavelength outside of a wavelength range of 1450 nm to 1650 nm, an effective core area(Aeff) at a wavelength of 1550 nm of 50 &mgr;m2 or more and 70 &mgr;m2 or less, a bending loss at a wavelength of 1550 nm when bent at a diameter of 20 mm of 20 dB/m or less, an effective cutoff wavelength of 1290 nm or more a dispersion at a wavelength of 1550 nm of 2 ps/nm/km or more in absolute value, and a single mode operation in a wavelength band having a bandwidth of 30 nm within a wavelength range of 1450 nm to 1650 nm.