What is BS EN 61300-3-31— Coupled power ratio (CPR) coefficient about?
BS EN 61300-3-31 is an international standard that discusses the test and measurement procedures for fibre optic interconnecting devices and passive components.
BS EN 61300-3-31 describes the method to measure the coupled power ratio (CPR) coefficient. CPR measurements are used to characterize optical sources and to standardize the launch conditions for measurements of attenuation on multimode fibres and insertion loss according to IEC 61300-3-4. The CPR coefficient is measured at both 850 nm and 1300 nm wavelengths.
Who is BS EN 61300-3-31— Coupled power ratio (CPR) coefficient for?
BS EN 61300-3-31 on coupled power ratio (CPR) coefficient is relevant to:
- Manufacturers of fibre optic devices
- Manufacturers of optical fibre
- Fibre optic technicians
- Fibre optic installers
- Testing authorities
- Regulatory authorities
Why should you use BS EN 61300-3-31 — Coupled power ratio (CPR) coefficient?
The modal distribution launched into the multimode fibre can vary widely with different light sources. This variation in launched modal distribution can result in significant differences in measured attenuation in the same object.
BS EN 61300-3-31 describes the coupled power ratio (CPR) coefficient test method gives information about the launched modal distribution (LMD) condition in a measured object. The CPR coefficient test method is based on a comparison of the difference in coupled power between multimode and single-mode fibres.
BS EN 61300-3-31 specifies coupled power ratio (CPR) which gives the CPR measurement is easily made and gives quantitative, repeatable results. It gives you detailed information about the apparatus needed to perform the test, explains the principle of the test, helps the users to execute the calculations, and to conclude the final test report.
BS EN 61300-3-31 specifies the following details:
- Light source
- Manufacturer and type
- Output type (MM, SM)
- Working wavelength
- MM test launch patch-cord TLP
- MM fibre type
- MM connector type and style
- SM test terminated patch-cord TTP
- SM fibre type
- SM connector type and style
- Reference connector adapter
Overall, BS EN 61300-3-31 is useful as it provides guidance on the coupled power ratio measurement for fibre optic sources which can be helpful for your business.
