{"id":460075,"date":"2024-10-20T10:07:40","date_gmt":"2024-10-20T10:07:40","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-60793-1-452024\/"},"modified":"2024-10-26T18:42:51","modified_gmt":"2024-10-26T18:42:51","slug":"bs-en-iec-60793-1-452024","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-60793-1-452024\/","title":{"rendered":"BS EN IEC 60793-1-45:2024"},"content":{"rendered":"

IEC 60793-1-45:2024 is available as IEC 60793-1-45:2024 RLV<\/span> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60793-1-45:2024 establishes uniform requirements for measuring the mode field diameter (MFD) of single-mode optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. This third edition cancels and replaces the second edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) modification of the minimum distance between the fibre end and the detector for the direct far field scan (Annex A). b) generalization of the requirement for the minimum dynamic range for all fibre types (Annex A).<\/p>\n

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2<\/td>\nundefined <\/td>\n<\/tr>\n
5<\/td>\nAnnex ZA (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
6<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
9<\/td>\nFOREWORD <\/td>\n<\/tr>\n
11<\/td>\n1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
Tables
Table 1 \u2013 Abbreviated terms <\/td>\n<\/tr>\n
12<\/td>\n4 General consideration about mode field diameter
5 Reference test method
6 Apparatus
6.1 General
Figures
Figure 1 \u2013 Transform relationships between measurement results <\/td>\n<\/tr>\n
13<\/td>\n6.2 Light source
6.3 Input optics
6.4 Input positioner
6.5 Cladding mode stripper
6.6 High-order mode filter
6.7 Output positioner <\/td>\n<\/tr>\n
14<\/td>\n6.8 Output optics
6.9 Detector
6.10 Computer
7 Sampling and samples
7.1 Sample length
7.2 Sample end face
8 Procedure
9 Calculations
9.1 Basic formulae
9.2 Method A \u2013 Direct far-field scan <\/td>\n<\/tr>\n
15<\/td>\n9.3 Method B \u2013 Variable aperture in the far field <\/td>\n<\/tr>\n
16<\/td>\n9.4 Method C \u2013 Near-field scan <\/td>\n<\/tr>\n
17<\/td>\n10 Results
10.1 Information available with each measurement
10.2 Information available upon request
11 Specification information <\/td>\n<\/tr>\n
18<\/td>\nAnnex A (normative) Requirements specific to method A \u2013 Mode field diameter by direct far-field scan
A.1 Apparatus
A.1.1 General
A.1.2 Scanning detector assembly \u2013 Signal detection electronics
Figure A.1 \u2013 Far-field measurement set <\/td>\n<\/tr>\n
19<\/td>\nA.1.3 Computer
A.2 Procedure
A.3 Calculations
A.3.1 Determine folded power curve
A.3.2 Compute the top (T) and bottom (B) integrals of Formula (1) <\/td>\n<\/tr>\n
20<\/td>\nA.3.3 Complete the calculation
A.4 Sample data <\/td>\n<\/tr>\n
21<\/td>\nAnnex B (normative) Requirements specific to method B \u2013 Mode field diameter by variable aperture in the far field
B.1 Apparatus
B.1.1 General
B.1.2 Output variable aperture assembly
Figure B.1 \u2013 Variable aperture by far-field measurement set <\/td>\n<\/tr>\n
22<\/td>\nB.1.3 Output optics system
B.1.4 Detector assembly and signal detection electronics
B.2 Procedure
B.3 Calculations
B.3.1 Determine complementary aperture function <\/td>\n<\/tr>\n
23<\/td>\nB.3.2 Complete the integration
B.3.3 Complete the calculation
B.4 Sample data <\/td>\n<\/tr>\n
24<\/td>\nAnnex C (normative) Requirements specific to method C \u2013 Mode field diameter by near-field scan
C.1 Apparatus
C.1.1 General
C.1.2 Magnifying output optics
Figure C.1 \u2013 Near-field measurement set-ups <\/td>\n<\/tr>\n
25<\/td>\nC.1.3 Scanning detector
C.1.4 Detection electronics
C.2 Procedure
C.3 Calculations
C.3.1 Calculate the centroid <\/td>\n<\/tr>\n
26<\/td>\nC.3.2 Fold the intensity profile
C.3.3 Compute the integrals <\/td>\n<\/tr>\n
27<\/td>\nC.3.4 Complete the calculation
C.4 Sample data <\/td>\n<\/tr>\n
28<\/td>\nAnnex D (normative) Requirements specific to method D \u2013 Mode field diameter by optical time domain reflectometer (OTDR)
D.1 General
D.2 Apparatus
D.2.1 OTDR
D.2.2 Optional auxiliary switches <\/td>\n<\/tr>\n
29<\/td>\nD.2.3 Optional computer
D.2.4 Test sample
D.2.5 Reference sample
D.3 Procedure \u2013 Orientation and notation
Figure D.1 \u2013 Optical switch arrangement <\/td>\n<\/tr>\n
30<\/td>\nD.4 Calculations
D.4.1 Reference fibre mode field diameter
Figure D.2 \u2013 View from reference fibre A
Figure D.3 \u2013 View from reference fibre B <\/td>\n<\/tr>\n
31<\/td>\nD.4.2 Computation of the sample mode field diameter
D.4.3 Validation
Figure D.4 \u2013 Validation example \u2013 Comparison of methods <\/td>\n<\/tr>\n
33<\/td>\nAnnex E (informative) Sample data sets and calculated values
E.1 General
E.2 Method A \u2013 Mode field diameter by direct far-field scan
Table E.1 \u2013 Sample data, method A \u2013 Mode field diameter by direct far-field scan <\/td>\n<\/tr>\n
34<\/td>\nE.3 Method B \u2013 Mode field diameter by variable aperture in the far field
E.4 Method C \u2013 Mode field diameter by near-field scan
Table E.2 \u2013 Sample data set, method B \u2013 Mode field diameter by variable aperture in the far field
Table E.3 \u2013 Sample data set, method C \u2013 Mode field diameter by near-field scan <\/td>\n<\/tr>\n
35<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Optical fibres – Measurement methods and test procedures. Mode field diameter<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2024<\/td>\n36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":460085,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[649,2641],"product_tag":[],"class_list":{"0":"post-460075","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-180-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/460075","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/460085"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=460075"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=460075"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=460075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}