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IEC 60793-1-44 Ed. 3.0 b:2023

Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off wavelength
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IEC 60793-1-44 Ed. 3.0 b:2023

Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off wavelength

PUBLISH DATE 2024
IEC 60793-1-44 Ed. 3.0 b:2023

Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off wavelength

IEC 60793-1-44:2023 establishes uniform requirements for measuring the cut-off wavelength of single-mode optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes.

This document gives methods for measuring the cut-off wavelength for uncabled or cabled single mode telecom fibre. These procedures apply to all category B and C fibre types.

There are three methods of deployment for measuring the cut-off wavelength:

  • method A: cable cut-off using uncabled fibre 22 m long sample, lcc;
  • method B: cable cut-off using cabled fibre 22 m long sample, lcc;
  • method C: fibre cut-off using uncabled fibre 2 m long sample, lc.

All methods require a reference measurement. There are two reference-scan techniques, either or both of which can be used with all methods:

  • bend-reference technique;
  • multimode-reference technique using category A1(OM1-OM5) multimode fibre.

This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

  • a) used the diameter of the fibre loops to describe deployment;
  • b) added Annex D related to cut-off curve artifacts;
  • c) reorganized information and added more figures to clarify concepts.
SDO IEC: International Electrotechnical Commission
Document Number IEC 60793
Publication Date June 5, 2024
Language b - English & French
Page Count 60
Revision Level 3.0
Supercedes
Committee 86A
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