What is BS EN 61300-3-18 - 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 61300-3-18 describes a method to measure the angular rotational misalignment of the ferrule mating surface of an angled endface connector and its design orientation angle with respect to its key.
Who is BS EN 61300-3-18 - Fibre optic interconnecting devices and passive components for?
BS EN 61300-3-18 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 61300-3-18 - 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. BS EN 61300-3-18 states that the angle α is defined as the angle between two planes. One plane passes through the axis of the ferrule and the axis of symmetry of the key to the angled end-face connector plug (plane A). The second plane passes through the axis of the ferrule and the normal to the ferrule mating surface at the axis of the ferrule or in the case of convex polished ferrules, the normal to the tangent plane at the axis of the ferrule end face, plane B In this method, a visible light He-Ne beam aligned along the ferrule axis is reflected by the ferrule mating surface to impinge upon a screen as a spot pattern. The screen is normal to and surrounding the ferrule axis.
In the case of a flat polished ferrule end face, the spot pattern is typically a small visible, approximately uniformly illuminated circle showing the little additional divergence of the laser beam. In the case of a convex polished ferrule end face, the pattern is typically a small ring (Airy disk) located at the centre of a large visible circle of beam diverged from the original laser beam. This small ring results from Fraunhofer diffraction of the He-Ne beam reflected from the convex ferrule end face containing a fibre or fibre hole as a centrally located aperture. The angle α is determined by measuring the angular positioning of the centre of the visible circle or ring with respect to the orientation of the key. This measurement procedure is corrected for centring by referencing two reflections (corresponding to two keyed positions of the connector holder located at 180° with respect to each other) to the orientation of the key. Using BS EN 61300-3-18 you can describe a method to measure the angular rotational misalignment of the ferrule mating surface of an angled endface connector.
What’s changed since the last update?
BS EN 61300-3-18:2006 supersedes BS EN 61300-3-18:1997. BS EN 61300-3-18:2006 includes some technical changes with respect to BS EN 61300-3-18:1997:
- The clause structure and the figure layout
