What is BS EN 61300-3-43 - Fibre optic interconnecting devices and passive components about?
BS EN 61300 is a series on fibre optic interconnecting devices and passive components. Fibre optic interconnecting devices and passive components do not require electrical-to-optical or optical-to-electrical conversion during their operation. BS EN 61300-3-43 describes the method for measuring the mode transfer function (MTF) to be used in characterising the launch conditions for measurements of attenuation and or return loss of multimode passive components. The MTF may be measured at the operational wavelengths.
Who is BS EN 61300-3-43 - Fibre optic interconnecting devices and passive components for?
BS EN 61300-3-43 on fibre optic interconnecting devices and passive components is useful for:
- Telecommunication component manufacturers
- Telecommunication equipment manufacturers
- Design engineers
- Quality control personnel
Why should you use BS EN 61300-3-43 - Fibre optic interconnecting devices and passive components?
Fibre optic interconnecting devices and passive components are widely used by people as a promising solution for modern access to telecommunication networks. 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 component. The MTF test method as mentioned in BS EN 61300-3-43 gives information about the launched modal distribution (LMD) condition in a measured component. The MTF test method is based on a measurement of the near-field intensity distribution in the fibre.
The apparatus is essentially a video microscope where a near-field image of the end of the fibre under test is formed on the surface of a camera by an optical system. The camera image is then digitised by a video digitiser and transferred to a computer for analysis and data presentation. A schematic of a typical measurement configuration is shown in BS EN 61300-3-43. The measurement of the modal distribution according to BS EN 61300-3-43 depends on a knowledge of the fibre core radius and the index profile factor. Examples of the effect on the MTF and MPD of entering different core diameters are shown in BS EN 61300-3-43. Using BS EN 61300-3-43 you can describe the method for measuring the mode transfer function (MTF) to be used in characterising the launch conditions for measurements of attenuation and or return loss of multimode passive components.
