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TIA-455-177

IEC-60793-1-43 Optical Fibres - Part 1-43: Measurement Methods and Test Procedures- Numerical Aperture

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Organization: TIA
Publication Date: 3 December 2020
Status: active
Page Count: 26
scope:

This part of IEC 60793 establishes uniform requirements for measuring the numerical aperture of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes.

The numerical aperture (NA) of categories A1, A2, A3 and A4 multimode fibre is an important parameter that describes a fibre's light-gathering ability. It is used to predict launching efficiency, joint loss at splices, and micro/macrobending performance.

The numerical aperture is defined by measuring the far-field pattern (NAff). In some cases the theoretical numerical aperture (NAth) is used in the literature, which can be determined from measuring the difference in refractive indexes between the core and cladding. Ideally these two methods should produce the same value.

Document History

TIA-455-177
December 3, 2020
IEC-60793-1-43 Optical Fibres - Part 1-43: Measurement Methods and Test Procedures- Numerical Aperture
This part of IEC 60793 establishes uniform requirements for measuring the numerical aperture of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. The...
August 1, 2003
FOTP-177 IEC-60793-1-43 Optical Fibres – Part 1-43: Measurement Methods and Test Procedures – Numerical Aperture
This part of IEC 60793 establishes uniform requirements for measuring the numerical aperture of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. The...
August 1, 1992
FOTP177 Numerical Aperture Measurement of Graded-Index Optical Fibers
This part of IEC 60793 establishes uniform requirements for measuring the numerical aperture of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. The...

References

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