BS EN 60793-2-40:2011

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

Published:

31 Mar 2011

•

Withdrawn:

31 Mar 2016

1 Scope

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 step-index, 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 (μm)	1000	750	500	1000	750	490	490	245
Numerical aperture	0,50^t	0,50^t	0,50^t	0,30^t	0,25^t	0,190^e	0,190^e	0,190^e
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 15μm to 35 μm 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.

Product Details

Descriptors

Data processing

Product specification

Optical communication systems

Fibre optic cables

Specification (approval)

Optical fibres

Fibre optics

Electronic equipment and components

Communication cables

Data transmission

ICS Codes

33.180.10 Fibres and cables

Committee

GEL/86/1

International relationships

Identical to:

EN 60335-2-9:2003/A2:2006

EN 60793-2-40:2011

IEC 60793-2-40:2009

ISBN

978 0 580 61198 8

Publisher

BSI