TIA/EIA-455-80-C:2003

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FOTP-80 IEC-60793-1-44 Optical Fibers – Part 1-44: Measurement Methods and Test Procedures – Cut-off Wavelength

Published By	Publication Date	Number of Pages
TIA	2003	30

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Description

This part of IEC 60793 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 standard provides methods for measuring the cut-off
wavelength of cable, fibre, and jumper cable.

Two methods exist for measuring cable cut-off wavelength, ?
_cc:

– method A: using uncabled fibre;

– method B: using cabled fibre.

There is only one method for measuring fibre cut-off wavelength,
? _c.

There is only one method for measuring jumper cable fibre
cut-off wavelength, ? _cj.

The test method in this standard describes procedures for
determining the cut-off wavelength of a sample fibre in either an
uncabled condition (? _c) or in a cable (? _cc)
or as a jumper cable (? _cj). Three default
configurations are given here: any different configuration will be
given in a detail specification. This method applies to all B fibre
types.

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

– bend-reference technique;

– multimode-reference technique.

Additional information