IEC 61755-2-5:2015(E) defines a set of prescribed conditions that should be maintained in order to satisfy the requirements of angled polished reference connections. The prescribed conditions include dimensional limits and optical fibre requirements of the optical interface to meet specific requirements for reference connection (plugs and adaptors) used for attenuation measurements. Two different grades for reference connections are defined in this standard. The use of each of these grades depends on the application and on the targeted attenuation measurement uncertainty. The model uses a Gaussian distribution of light intensity over the specified restricted mode field diameter (MFD) range. This standard is intended to be used for shipping and acceptance inspections. The reference connector plug is specified for B1.1, B1.3 and B6 fibres as specified in IEC 60793-2-50. The use of the reference connector plug would not be recommended where classification of fibre is difficult, for example construction and maintenance of cable plant. Keywords: angled polished reference connections, plugs and adaptors, attenuation measurements<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
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| 6<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 3 Performance grades 4 Description Tables Table 1 \u2013 Single-mode attenuation grades at 1 310\u00a0nm (dB) <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 5 Criteria for a fit within performance grades 5.1 General 5.2 Attenuation grades and criteria Table 2 \u2013 Mode field diameter and fibre core nominal index of refraction for fibre to be used in reference connector plugs <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Figures Figure 1 \u2013 Representation of fibre core position of single connector plug under the assumption of worst case alignment with identical connector plug <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 6 Use of selected fibre to assemble reference connector plugs 7 Reference adaptor 8 Attenuation measurement uncertainty contribution Table 3 \u2013 Measurement uncertainty contribution of reference connectors <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Annex A (informative) Example of determination of the attenuation measurement uncertainty Figure A.1 \u2013 Attenuation measurement uncertainty contributionfor Grade 1 reference connectors <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fibre optic interconnecting devices and passive components. Connector optical interfaces – Connection parameters of non-dispersion shifted single-mode physically contacting fibres. Angled for reference connection applications<\/b><\/p>\n |