scope:

This standard applies to circulators used in the field of fibre optics bearing all of the following features: - they are non-reciprocal optical devices, in which each port is either an optical fibre or optical fibre connector; - they are passive components containing no opto-electronic or other transducing elements; - they have three or more ports for directionally transmitting optical power. This standard establishes uniform requirements for the following: - fibre optic circulator requirements; - quality assessment procedures.