Optical fibres - Measurement methods and test procedures. Beat length Ingestion-build-183098 BS 4481-2 is the second

BS 4481-2 is the second part of the BS 4481 multi-series that discusses bonded abrasive products

Testing procedures can determine how a particular type of packaging will perform when exposed to various real-world conditions and demands

especially vision-based methods

BS EN 60601-1: 2006

Optical fibres - Measurement methods and test procedures. Beat length Ingestion-build-183098 BS 4481-2 is the second1 Scope This part of IEC 60793 defines test methods for both the phase beat length, and the group beat length. These two parameters are defined differently, and will give different results depending on the type of polarization maintaining (PM) fibre. The phase beat length is the relevant parameter for the fibres ability to maintain a high extinction ratio. This is described in more details in Annexes A and B.