BS EN 61300-3-37:2005

What is BS EN 61300-3-37— Endface angle of angle-polished optical fibres about? 

BS EN 61300-3-37 is an international standard that discusses the aspects of fibre optic interconnecting devices and passive components.  

BS EN 61300-3-37 describes methods to measure the endface angle of flat or convex angle-polished optical fibres. The primary attributes addressed include endface angle, key angle, and radius of curvature. 

BS EN 61300-3-37 stipulates technicalities such as general description, apparatus for testing, test procedures, details to be specified, etc. regarding the examination of the endface angle of angle-polished optical fibres.  

Who is BS EN 61300-3-37— Endface angle of angle-polished optical fibres for?  

BS EN 61300-3-37 on endface angle of angle-polished optical fibres is relevant to: 

• Manufacturers of optical fibres 
• Manufacturers of the fibre optic components 
• Manufacturers of fibre optic devices 
• Regulatory authorities 
• Fibre optic technicians 
• Fibre optic installers 
• Testing authorities  

Why should you use BS EN 61300-3-37— Endface angle of angle-polished optical fibres? 

Optical fibres are frequently cleaved and polished to achieve a suitable end face surface topography for interfacing to other fibres, optical components, transmitters, or receivers. Such interfaces may occur in free space or by physical contact.  

The optical fibre endface angle (θ) for flat endface angle-polished fibres is defined as the angle between the plane perpendicular to the axis of the fibre and the plane of the flat endface. The endface angle (θ) for spherically polished angled endface fibres is the angle between the plane perpendicular to the axis of the fibre and the straight-line tangent to the polished surface at the fibre core and going to the nominal angle direction. BS EN 61300-3-37 describes two methods for measuring the optical fibre endface angle, such as method 1 – automatic interferometric method (reference method) and method 2 – manual interferometric method. This helps the users particularly in the case of ferrule-less fibre optic connectors, as the radiused or angled radiused end faces optimise the fibre-to fibre physical contact characteristics. BS EN 61300-3-37 also lays out the detailed general description for both the methods used to evaluate the endface angle of angle-polished optical fibres as well as recommends the apparatus that could be used for carrying the procedures.   

Overall, BS EN 61300-3-37 is useful to users dealing with fibre optic interconnecting devices and passive components.