Patent ID: 6819848
Filing Date: 2004-11-16
Classification: B65H,G02B

Abstract:
A method of winding an optical fiber on a reel, utilizing the optical fiber having the following characteristics:a cable cutoff wavelength of 1260 nm or less, a zero dispersion wavelength is outside a wavelength range of 1530 to 1565 nm, an absolute value of the dispersion value in the entire wavelength range of 1530 to 1565 nm is in a range of 2 to 14 ps/nm/km, and a bending loss at a wavelength of 1550 nm is in a range of 1 to 100 dB/m, when wound at a diameter of 20 mm; and the reel with a barrel diameter of not less than 100 mm and not more than 200 mm; characterized by winding the optical fiber on the reel so that a transmission loss of the optical fiber after winding on the reel is 0.25 dB/km or less at the wavelength of 1550 nm, and an increase of a transmission loss of the optical fiber is 0.03 dB/km or less at the wavelength of 1550 nm, after the optical fiber is wound on the reel at a length of approximately 25 km.