What is BS EN IEC 61757‑1‑1 about?
BS EN IEC 61757 is a series on fibre optic sensors. BS EN IEC 61757‑1‑1 defines detailed specifications for fibre optic sensors using one or more fibre Bragg gratings (FBG) as the sensitive element for strain measurements.
BS EN IEC 61757‑1‑1 specifies the most important features and characteristics of a fibre optic sensor for strain measurements, based on the use of an FBG as the sensitive element, and defines the procedures for their determination. BS EN IEC 61757‑1‑1 specifies basic performance parameters and characteristics of the corresponding measuring instrument to read out the optical signal from the FBG. BS EN IEC 61757‑1‑1 refers to the measurement of static and dynamic strain values in a range of frequencies.
Who is BS EN IEC 61757‑1‑1 for?
BS EN IEC 61757‑1‑1 on fibre optic sensors is useful for:
- Fibre optic components manufacturers
- Design engineers
- Research and development facilities
Why should you use BS EN IEC 61757‑1‑1?
Fibre optic sensors are used to measure strain, temperature, pressure, and other quantities by modifying a fibre so that the quantity to be measured modulates the intensity, phase, polarization, wavelength or transit time of light in the fibre. Strain sensors based on fibre Bragg gratings as mentioned in BS EN IEC 61757‑1‑1 are phase diffraction grating integrated into optical single-mode silica-based fibres, according to category B that selectively reflect a very narrow range of wavelengths while transmitting others.
An FBG creates a periodic variation in the refractive index of the fibre core, which generates a wavelength-specific dielectric mirror. Hence an FBG can be used as an inline fibre to block certain wavelengths or it can be used as a wavelength-specific reflector.
BS EN IEC 61757‑1‑1 helps you measure the strain of fibre optic sensors in order to make the transmission of wavelength precise.
What’s changed since the last update?
BS EN IEC 61757‑1‑1:2020 supersedes BS EN 61757‑1‑1:2017. BS EN IEC 61757‑1‑1:2020 includes some technical changes with respect to BS EN 61757‑1‑1:2017. These include:
- Update of cited standards
- Clarification of definitions and test specifications
