British Standards Institution

Source:: IEC
Committee:: GEL/86/3 - Fibre optic systems and active devices
Categories:: Fibre optic equipment. Other
Number of comments:: 0

Scope

This part of IEC 61757 defines the terminology, structure, and measurement methods of distributed fibre optic sensors for absolute strain measurements based on spectral correlation analysis of Rayleigh backscattering signatures in single-mode fibres, where the fibre is the distributed strain sensing element.

This document also specifies the most important features and performance parameters of these distributed fibre optic strain sensors and defines procedures for measuring these features and parameters.

This part of IEC 61757 does not apply to point measurements or to dynamic strain measurements. Distributed strain measurements using Brillouin scattering in single-mode fibres are covered in IEC 61757-1-2.

The most relevant applications of this strain measurement technique are listed in informative Annex A, while informative Annex B provides a short description of the underlying measurement principle.

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Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

04/04/2025

3. Public Comments

Public Comments start date:

04/02/2025

Public Comments end date:

19/02/2025

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Standards Development

BS EN IEC 61757-1-4 ED1 Fibre optic sensors. Part 1-4: Strain measurement – Distributed sensing based on Rayleigh scattering

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