標準號：IEC 60793-1-34-2006
中文標準名稱：光學纖維.第1-34:部分:測量方法和試驗程序.纖維卷曲
英文標準名稱：Optical fibres - Part 1-34: Measurement methods and test procedures - Fibre curl
標準類型：M33
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：M33
國際標準分類號：33.180.10
適用范圍：This part of IEC 60793 establishes uniform requirements for the mechanical characteristic:fibre curl or latent curvature, in uncoated optical fibres. Fibre curl has been identified as animportant parameter for minimizing the splice loss of optical fibres when using passivealignment fusion splicers or active alignment mass fusion splicers.Two methods are recognized for the measurement of fibre curl, in uncoated optical fibres:? method A: side view microscopy;? method B: laser beam scattering.Both methods measure the radius of curvature of an uncoated fibre by determining theamount of deflection that occurs as an unsupported fibre end is rotated about the fibre's axis.Method A uses visual or digital video methods to determine the deflection of the fibre whilemethod B uses a line sensor to measure the maximum deflection of one laser beam relative toa reference laser beam.By measuring the deflection behaviour of the fibre as it is rotated about its axis andunderstanding the geometry of the measuring device, the fibre's radius of curvature can becalculated from simple circular models, the derivation of which are given in Annex C.Both methods are applicable to types A1, A2, A3 and B optical fibres as described in theIEC 60793 series.Method A is the reference test method, used to resolve disputes.