IEC 61274-1 Fibre optic interconnecting devices and passive components - Adaptors for fibre optic connectors - Part 1: Generic specification
IEC 61300-3-35:2015 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-35: Examinations and measurements - Visual inspection of fibre optic connectors and fibre-stub transceivers
IEC TR 62572-4 Fibre optic active components and devices - Reliability standards - Part 4: Guidelines for optical connector end-face cleaning methods for receptacle style optical transceivers*， 2020-09-08 Update