{"id":248216,"date":"2024-10-19T16:21:00","date_gmt":"2024-10-19T16:21:00","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-60793-1-452018\/"},"modified":"2024-10-25T11:29:55","modified_gmt":"2024-10-25T11:29:55","slug":"bs-en-iec-60793-1-452018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-60793-1-452018\/","title":{"rendered":"BS EN IEC 60793-1-45:2018"},"content":{"rendered":"

IEC 60793-1-45:2017 is also available as \/2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60793-1-45:2017 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 second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – improvement of the description of measurement details for B6 fibre; – correction of Equations (1), (2), (5) and (6); – correction of Table E.1, Table E.2 and Table E.3. Keywords: mode field diameter (MFD)<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/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 and definitions
4 General consideration about mode field diameter <\/td>\n<\/tr>\n
12<\/td>\n5 Reference test method
6 Apparatus
6.1 General
6.2 Light source
Figures
Figure 1 \u2013 Transform relationships between measurement results <\/td>\n<\/tr>\n
13<\/td>\n6.3 Input optics
6.4 Input positioner
6.5 Cladding mode stripper
6.6 High-order mode filter
6.7 Output positioner
6.8 Output optics
6.9 Detector
6.10 Computer <\/td>\n<\/tr>\n
14<\/td>\n7 Sampling and specimens
7.1 Specimen length
7.2 Specimen end face
8 Procedure
9 Calculations
9.1 Basic equations
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
9.4 Method C \u2013 Near-field scan <\/td>\n<\/tr>\n
16<\/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>\nAnnexes
Annex 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
A.1.3 Computer
Figure A.1 \u2013 Far-field measurement set <\/td>\n<\/tr>\n
19<\/td>\nA.2 Procedure
A.3 Calculations
A.3.1 Determine folded power curve
A.3.2 Compute the top (T) and bottom (B) integrals of Equation (1)
A.3.3 Complete the calculation <\/td>\n<\/tr>\n
20<\/td>\nA.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
C.1.3 Scanning detector
Figure C.1 \u2013 Near-field measurement set-ups <\/td>\n<\/tr>\n
25<\/td>\nC.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
C.3.4 Complete the calculation <\/td>\n<\/tr>\n
27<\/td>\nC.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
D.3.1 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 specimen 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
Tables
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<\/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>\n2018<\/td>\n36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":248221,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[649,2641],"product_tag":[],"class_list":{"0":"post-248216","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\/248216","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\/248221"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=248216"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=248216"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=248216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}