Full Description

This part of IEC 61755 defines a set of prescribed conditions for a single-mode fibre optic
connection that is maintained in order to satisfy the requirements of attenuation and return loss
(RL) performance in a randomly mated pair of angled polished physically contacting (APC)
fibres. The model uses a Gaussian distribution of light intensity over the specified mode field
diameter (MFD) for determination of attenuation performance grades, based on MFD mismatch
and the amount of lateral and angular fibre core offsets. Attenuation and RL performance grades
are defined in IEC 61755-1.