TIA-455-20-B:2004 (R2013)

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FOTP-20 IEC 60793-1-46: Optical Fibers – Part 1-46: Measurement Methods and Test Procedures- Monitoring of Changes in Optical Transmittance

Published By	Publication Date	Number of Pages
TIA	2004	23

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Description

This part of IEC 60793 establishes uniform requirements for the
monitoring of changes in optical transmittance, thereby assisting
in the inspection of fibres and cables for commercial purposes.

This standard gives two methods for monitoring the changes in
optical transmittance of optical fibres and cables that occur
during mechanical or environmental testing, or both. It provides a
monitor in the change of optical transmission characteristics
arising from optical discontinuity, physical defects and
modifications of the attenuation slope:

– method A: change in transmittance by transmitted power;

– method B: change in transmittance by backscattering.

Methods A and B apply to the monitoring of all categories of the
following fibres:

– class A: multimode fibres;

– class B: single-mode fibres.

Information common to both measurements is contained in clauses
1 to 8, and information pertaining to each individual method
appears in annexes A, and B respectively.

Additional information