BS EN 61202-1:2017

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
Annex A (informative) - Example of technology of bulk
        isolator based on magneto-optic effect
Annex B (informative) - Example of technology of optical
        waveguide isolator
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Pertains to isolators used in the field of fibre optics, all exhibiting the following features: - they are non-reciprocal optical devices, in which each port is either an optical fibre or fibre optic connector; - they are passive devices containing no opto-electronic or other transducing elements; - they have two optical ports for directionally transmitting optical power.

IEC 61202-1:2016 applies to isolators used in the field of fibre optics, all exhibiting the following features:
- they are non-reciprocal optical devices, in which each port is either an optical fibre or fibre optic connector;
- they are passive devices containing no opto-electronic or other transducing elements;
- they have two optical ports for directionally transmitting optical power. This fourth edition cancels and replaces the third edition published in 2009. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the terms and definitions were reconsidered;
- quality assessment level was deleted from classification;
- the clause numbers of Annexes A and B have been rearranged.