What is BS EN 60793-1-43 - Optical fibres - Numerical aperture measurement about?
BS EN 60793-1-43 is the 43rd subpart of the first part of the multi-series that discusses optical fibres.
BS EN 60793-1-43 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.
BS EN 60793-1-43 is to be used in conjunction with IEC 60793-1-1, IEC 60793-1-21 and IEC 60793-1-22.
Who is BS EN 60793-1-43 - Optical fibres - Numerical aperture measurement for?
BS EN 60793-1-43 on optical fibres is useful for:
- Telecommunication equipment components manufacturers
- Design engineers
- Quality control personnel
- Research and development facilities
- Telecommunication companies
- Testers of optical fibres
Why should you use BS EN 60793-1-43 - Optical fibres - Numerical aperture measurement?
BS EN 60793-1-43 describes two methods for measuring the angular radiant intensity (far-field) distribution from an optical fibre. BS EN 60793-1-43 describes a fibre's light-gathering ability that will be used to predict launching efficiency, joint loss at splices, and micro/macro bending performance. BS EN 60793-1-43 also helps you to determine from measuring the difference in refractive indexes between the core and cladding.
Overall, BS EN 60793-1-43 will help you to measure the numerical aperture of optical fibres which can assist you in the quality assurance phase.
What’s changed since the last update?
BS EN 60793-1-43:2015 supersedes BS EN 60793-1-43:2002 which is withdrawn.
BS EN 60793-1-43:2015 includes the following significant technical changes with respect to the BS EN 60793-1-43:2002:
- Expansion of the scope to include A1, A2, A3 and A4 multimode fibre categories
- Addition of measurement parameters of sample length and threshold values, product specific to the variables that are now found in the product specifications
- A new Annex B entitled "Product-specific default values for NA measurement"
- Addition of a new Technique 4 for measuring NA of A4d fibres
- A new Annex A entitled "Mapping NA measurement to alternative lengths" that gives a mapping function to correlate shorter sample length measurements to the length suggested in the reference test method, Naff.