Optical Fibre Connector Grade:
Loss: 0.25dB mean, ≤0.50dB max, >97% of samples
Return Loss: ≥35dB
Loss: 0.12dB mean, ≤0.25dB max, for >97% of samples.
Return Loss: ≥45dB
‘Grade A’ connector performance (to be officially ratified by IEC):
Loss: 0.07dB mean, ≤0.15dB max, for >97% of samples.
Return Loss by IEC 61300-3-6 Random Mated: >55dB (unmated, for APC connectors) and >60dB (mated)
Patch Cable Colour Coding
G.657A1 fibre, 10 mm bending radius
G.657A2 & B2 fibre, 7.5 mm bending radius
G.657B3 fibre, 5 mm bending radius
Compliant with ITU-T G.652.D fibres
At 650nm red light, the attenuation is ~6.5dB/km for single mode fibre.
The human eye visibility at 650nm could reach -50dBm.
The 10mW 650nm Visual Fault Locator (VFL) could reach 9km.