Bending resistant optical fiber

[0036] A bend-resistant optical fiber comprising a core 1, a cladding 2 outside the core, a coating 3 outside the cladding, and a colored layer 5 outside the coating, characterized in that: There is an anti-bending outer layer 4 between the coating layer and the colored layer; the cladding diameter is 123-127 μm, the core / cladding concentricity error is ≤0.6 μm, and the cladding out-of-roundness is ≤1.0%. The diameter of the layer is 210-230 μm, the diameter of the anti-bending outer layer is 225-245 μm, and the diameter of the colored layer is 240-260 μm; after the bending-resistant optical fiber is loosely wound 100 times with a bending radius of 30 mm, the additional attenuation of 1310 nm wavelength is ≤0.05 dB / Km, the additional attenuation of 1383nm wavelength≤0.05dB / Km, the additional attenuation of 1550nm wavelength≤0.1dB / Km, the additional attenuation of 1625nm wavelength≤0.1dB / Km; take any bending-resistant optical fiber with a length of not less than 10cm, and the b...

[0053] A bend-resistant optical fiber comprising a core 1, a cladding 2 outside the core, a coating 3 outside the cladding, and a colored layer 5 outside the coating, characterized in that: There is also a bending-resistant inner layer 10 between the core and the cladding; the diameter of the cladding is 123-127 μm, the concentricity error of the core / cladding is ≤0.6 μm, the out-of-roundness of the cladding is ≤1.0%, and the coating layer The diameter is 235-250 μm, the diameter of the anti-bending inner layer is 8.5-20 μm, and the diameter of the colored layer is 240-260 μm; after the bending-resistant optical fiber is loosely wound 100 times with a bending radius of 30 mm, the additional attenuation of 1310nm wavelength is ≤0.05dB / Km, 1383nm wavelength additional attenuation ≤ 0.05dB / Km, 1550nm wavelength additional attenuation ≤ 0.1dB / Km, 1625nm wavelength additional attenuation ≤ 0.1dB / Km; any bend-resistant fiber with a length of not less than 10cm is taken, and the bend...

[0070] A bend-resistant optical fiber comprising a core 1, a cladding 2 outside the core, a coating 3 outside the cladding, and a colored layer 5 outside the coating, characterized in that: There is an anti-bending outer layer 4 between the coating layer and the colored layer, and an anti-bending inner layer 10 between the core and the cladding; the diameter of the cladding is 123-127 μm, and the core / cladding concentricity Error ≤ 0.6 μm, cladding out of roundness ≤ 1.0%, coating layer diameter is 210-230 μm; anti-bending inner layer diameter is 8.5-20 μm; anti-bending outer layer diameter is 225-245 μm; coloring layer diameter is 240 ~260μm; after the bend-resistant optical fiber is loosely wound 100 times with a bending radius of 30mm, the additional attenuation of 1310nm wavelength is ≤0.05dB / Km, the additional attenuation of 1383nm wavelength is ≤0.05dB / Km, and the additional attenuation of 1550nm wavelength is ≤0.1dB / Km, 1625nm wavelength additional attenuation ≤ 0.1dB / K...