Patent ID: 7079736
Filing Date: 2006-07-18
Classification: C03B,C03C,G02B,Y02P

Abstract:
1. A piece of optical fiber having a length of twenty-five kilometers or more, an average transmission loss at a wavelength of 1383 nanometer (nm) over the entire length of the piece less than an average transmission loss at a wavelength of 1310 nm over the entire length of the piece, and a zero dispersion wavelength in the vicinity of 1310 nm, wherein the maximum value of transmission loss at each of the wavelengths of 1310 nm and 1550 nm in any 1 km section taken along the optical fiber does not exceed an average transmission loss at said each of the wavelengths of 1310 nm and 1550 nm over the whole length of the piece by 0.03 dB/km or more, characterized in that the minimum value of transmission loss at the wavelength of 1383 nm in any 1 km section taken along the optical fiber does not exceed an average transmission loss at the wavelength of 1383 nm over the entire length of the piece by 0.03 dB/km or more.