Publication details
| Publication CODE |
Title |
| NBN EN 60793-1-43:2015 (2015-05) |
OPTICAL FIBRES - PART 1-43: MEASUREMENT METHODS AND TEST PROCEDURES - NUMERICAL APERTURE MEASUREMENT |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
25.00 €
|
3 P.. |
Description
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.
This second edition of IEC 60793-1-43, together with other standards in the IEC 60793-4X series, cancels and replaces the first edition of IEC 60793-1-43, and constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- 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.
Keywords: numerical aperture of optical fibre, inspection of fibres and cables
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| Class |
C
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Available files
ATTENTION: Belgian registered standards (NBN EN or NBN HD) are generally
only available in English or French. Only the cover page is translated
and the document itself is in English or in French.
Very important notice: 98% of the text of the NBN EN 55XXX,
NBN EN 6XXXX comes from the IEC text which is NOT included.
This text can be ordered here:
IEC 60793-1-43:2015.
For the series NBN EN 50XXX, the standards are however complete.
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DE version
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EN version
|
FR version
|
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Status
| Status |
Registered trilingual Belgian standard EN or FR or DE |
| Situation |
Currently active
Replaces
NBN EN 60793-1-43:2002
|
|
Origin
| Committee |
TC 86/SC 86A
FIBRES AND CABLES (optical)
|
| Responsible |
Monsieur POLART Jules, Ingénieur
Chaussée de Brunehault, 380
7140
MORLANWELZ
Phone: 064 / 45 16 83
Fax: 064 / 45 16 83
E-mail: jules.polart@ceb-bec.be
|
Approval
| BEC Approval |
2015-05-01 |
| NBN Approval |
2015-06-19 |
| Belgian Official Journal |
2015-07-03 |
| Registration |
157965 |
| ICS-Code (International Standards Classification) |
33.180.10
|
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
2015-05-01 |
| Date of availability (d.a.v.) |
2015-05-08 |
| Date of announcement (d.o.a.) |
2015-08-01 |
| Date of publication (d.o.p.) |
2016-02-01 |
| Date of withdrawal former edition (d.o.w.) |
2018-05-01 |
|
Correspondences with international standards
| Relation |
International standard |
Date |
| is identical to |
EN 60793-1-43:2015
|
2015-05-08 |
| is identical to |
IEC 60793-1-43:2015/ed. 2.0
|
2015-03-27 |
Relations to belgian/foreign publications
| Type |
Origin |
Code |
Date |
| Standard |
Belgium |
NBN EN 60793-1-1 |
|
| Standard |
Belgium |
NBN EN 60793-1-21 |
|
| Standard |
Belgium |
NBN EN 60793-1-22 |
|
| Standard |
Belgium |
NBN EN 60793-2-10 |
|
| Standard |
Belgium |
NBN EN 60793-2-20 |
|
| Standard |
Belgium |
NBN EN 60793-2-30 |
|
| Standard |
Belgium |
NBN EN 60793-2-40 |
|
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