Optical fibres - Measurement methods and test procedures. Beat lengthWhat is BS EN 60793 1 60 Beat length of optical fibres about? BS EN 60793 1 60 is a part of the BS EN 60793 multi series that discusses optical fibres. BS EN 60793 1 60 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. Who is BS EN 60793 1 60 Beat length of optical fibres for? BS EN

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