Patent ID: 7492999
Filing Date: 2009-02-17
Classification: G02B

Abstract:
1. An optical fiber that transmits at least a signal light including a wavelength of 1550 nanometers in a fundamental propagation mode, the optical fiber having, a cutoff wavelength equal to or longer than 1550 nanometers, a wavelength dispersion of 4 ps/nm/km to 7 ps/nm/km in the fundamental propagation mode at the wavelength of 1550 nanometers, a dispersion slope of a positive value equal to or smaller than 0.03 ps/nm an effective core area equal to or larger then 60 μm a bending loss equal to or smaller than 20 dB/m with a winding of 16 turns at a diameter of 20 millimeters in the fundamental propagation mode at the wavelength of 1550 nanometers.