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BSI BS EN 60793-2-40:2011

Optical fibres -- Product specifications. Sectional specification for category A4 multimode fibres
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BSI BS EN 60793-2-40:2011

Optical fibres -- Product specifications. Sectional specification for category A4 multimode fibres

PUBLISH DATE 2011
PAGES 38
BSI BS EN 60793-2-40:2011

This part of IEC 60793-2 is applicable to optical fibre categories A4a, A4b, A4c, A4d, A4e, A4f, A4g and A4h. These fibres have a plastic core and plastic cladding and may have stepindex, multi-step index, or graded-index profiles. The fibres are used in information transmission equipment and optical fibre cables. Table 1 summarizes some of the salient characteristics and applications of these fibres.

Table 1 – Characteristics and applications of category A4 Fibres

A4a A4b A4c A4d A4e A4f A4g A4h
Core diameter (μm) See Note 1 See Note 1 See Note 1 See Note 1 ≥500 200 120 62,5
Cladding diameter (ÎĽm) 1000 750 500 1000 750 490 490 245
Numerical aperture 0,50t 0,50t 0,50t 0,30t 0,25t 0,190e 0,190e 0,190e
Operating wavelength(s) (nm) 650

See Note 2

650 650 650 650 650, 850, 1300 650, 850, 1300 850, 1300
Applications Digital audio interface, automobile, industrial and sensor

Data transmission

industrial and sensor sensor Digital audiovisual interface and data transmission Digital audiovisual interface and data transmission Industrial and mobile; compatible with A3 transmission equipment Data transmission Data transmission; primarily used in ribbon structures

NOTE 1 Typically 15ÎĽm to 35 ÎĽm smaller than the cladding diameter.

NOTE 2 Other potential wavelengths for A4a fibre are described in Annex J.

t Theoretical.

e Measured effective.

In addition to the applications shown in Table 1, other applications for A4 fibres include, but are not restricted to, the following: support for short reach high bit-rate systems in telephony, distribution and local networks, carrying data, voice and/or video services and on-premises intrabuilding and interbuilding fibre installations, including LANs, PBXs, video, various multiplexing uses, and miscellaneous related uses, such as consumer electronics and industrial and mobile networks.

Three types of requirements apply to A4 fibres:

  • general requirements, as defined in IEC 60793-2;

  • specific requirements common to category A4 multimode fibres covered in this standard and that are given in Clause 3;

  • particular requirements applicable to individual fibre types or specific applications and that are defined in this standard in the normative family specification annexes.

SDO BSI: British Standards Institution
Document Number EN 60793-2-40
Publication Date March 31, 2011
Language en - English
Page Count 38
Revision Level
Supercedes
Committee GEL/86/1
Publish Date Document Id Type View
March 31, 2016 BS EN 60793-2-40:2016 Revision
March 31, 2011 BS EN 60793-2-40:2011 Revision
Sept. 29, 2006 BS EN 60793-2-40:2006 Revision
July 30, 2002 BS EN 60793-2-40:2002 Revision