This part of IEC 62007 is a specification template for essential ratings and characteristics of the following categories of semiconductor optoelectronic devices to be used in the field of fibre optic systems and subsystems:– semiconductor photoemitters;– semiconductor photoelectric detectors;– monolithic or hybrid integrated optoelectronic devices and their modules.The object of this performance specification template is to provide a frame for the preparationof detail specifications for the essential ratings and characteristics.Detail specification writers may add specification parameters and/or groups of specification parameters for particular applications