{"id":246921,"date":"2024-10-19T16:14:51","date_gmt":"2024-10-19T16:14:51","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-60793-1-492006\/"},"modified":"2024-10-25T11:18:55","modified_gmt":"2024-10-25T11:18:55","slug":"bs-en-60793-1-492006","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-60793-1-492006\/","title":{"rendered":"BS EN 60793-1-49:2006"},"content":{"rendered":"

Describes a method for characterizing the modal structure of a graded-index multimode fibre. The information is useful for assessing the bandwidth performance of a fibre when used with laser sources. Applies only to multimode, graded-index glass-core (category A1) fibres. The test method is commonly used in production and research facilities, however is not easily accomplished in the field.<\/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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
5<\/td>\nCONTENTS <\/td>\n<\/tr>\n
6<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
7<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
8<\/td>\n4 Apparatus
4.1 Optical source
4.2 Stability
4.3 Launch system <\/td>\n<\/tr>\n
9<\/td>\n4.4 Detection system <\/td>\n<\/tr>\n
10<\/td>\n4.5 Computational equipment
5 Sampling and specimens
5.1 Test sample
5.2 Specimen endfaces
5.3 Specimen length
5.4 Specimen packaging
5.5 Specimen positioning
6 Procedure
6.1 Adjust and measure system response <\/td>\n<\/tr>\n
11<\/td>\n6.2 Adjust detection system
6.3 Measure the test sample <\/td>\n<\/tr>\n
12<\/td>\n7 Calculations and interpretation of results
7.1 Differential mode delay (DMD)
7.2 Minimum calculated effective modal bandwidth <\/td>\n<\/tr>\n
14<\/td>\n7.3 Length normalization
8 Documentation
9 Specification information <\/td>\n<\/tr>\n
16<\/td>\nAnnex A (normative) Source spectral width limitation <\/td>\n<\/tr>\n
18<\/td>\nTable A.1 \u2013 Highest expected dispersion for any of the commercially available Category A1 fibres <\/td>\n<\/tr>\n
19<\/td>\nAnnex B (informative) Discussion of measurement details
Figure B.1 \u2013 Idealized DMD data <\/td>\n<\/tr>\n
23<\/td>\nAnnex C (informative) Determining DMD weights for EMBc calculation <\/td>\n<\/tr>\n
26<\/td>\nAnnex D (informative) EMBc calculation information
Table D.1 \u2013 DMD weightings \u2013 Example set 1 <\/td>\n<\/tr>\n
27<\/td>\nTable D.2 \u2013 DMD weightings \u2013 Example set 2 <\/td>\n<\/tr>\n
29<\/td>\nAnnex E (informative) Comparison between this standard and ITU recommendations <\/td>\n<\/tr>\n
30<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Optical fibres – Measurement methods and test procedures – Differential mode delay<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2006<\/td>\n32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":246922,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[586,2641],"product_tag":[],"class_list":{"0":"post-246921","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-31-220-01","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\/246921","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\/246922"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=246921"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=246921"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=246921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}