Patent ID: 8265442
Filing Date: 2012-09-11
Classification: C03C,G02B

Abstract:
1. An optical fiber possessing an improved coating system that reduces stress-induced microbending, the optical fiber comprising: a single-mode glass fiber; and a substantially cured primary coating surrounding said glass fiber, said substantially cured primary coating possessing (i) an in situ modulus of less than 0.50 MPa and (ii) a glass transition temperature of less than −55° C.; wherein, at a wavelength of 1310 nanometers, the optical fiber has a mode field diameter with nominal values of between 8.5 microns and 9.3 microns; wherein, the optical fiber has a standard cable cut-off wavelength of no more than 1260 nanometers; wherein, the optical fiber has a zero chromatic dispersion wavelength of at least 1300 nanometers and no more than 1324 nanometers; wherein, at the zero chromatic dispersion wavelength, the optical fiber has a slope of no more than 0.092 ps/(nm wherein, at a wavelength of 1550 nanometers, the optical fiber has induced bending attenuation of (i) 0.03 dB or less for ten turns around a mandrel radius of 15 millimeters, (ii) 0.1 dB or less for one turn around a mandrel radius of 10 millimeters, and (iii) 0.5 dB or less for one turn around a mandrel radius of 7.5 millimeters; and wherein, at a wavelength of 1625 nanometers, the optical fiber has induced bending attenuation of (i) 0.1 dB or less for ten turns around a mandrel radius of 15 millimeters, (ii) 0.2 dB or less for one turn around a mandrel radius of 10 millimeters, and (iii) 1.0 dB or less for one turn around a mandrel radius of 7.5 millimeters.