{"id":247732,"date":"2024-10-19T16:18:38","date_gmt":"2024-10-19T16:18:38","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iec-tr-61282-112012\/"},"modified":"2024-10-25T11:26:15","modified_gmt":"2024-10-25T11:26:15","slug":"bsi-pd-iec-tr-61282-112012","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iec-tr-61282-112012\/","title":{"rendered":"BSI PD IEC\/TR 61282-11:2012"},"content":{"rendered":"

IEC\/TR 61282-11:2012(E) is intended to show the background of encircled flux for the characterisation of multimode launch conditions. This includes the selection of the encircled flux and the definition of the encircled flux requirements in conjunction with the implied variation in attenuation measurements.<\/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\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
6<\/td>\nFOREWORD <\/td>\n<\/tr>\n
8<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n4 Background
5 Metrics for multimode launch conditions
5.1 General <\/td>\n<\/tr>\n
11<\/td>\n5.2 Coupled power ratio (CPR)
5.3 Mode power distribution \/ relative power distribution (MPD\/RPD) <\/td>\n<\/tr>\n
12<\/td>\n5.4 Encircled flux (EF)
6 Uncertainties
6.1 General
6.2 Measurement model and uncertainties <\/td>\n<\/tr>\n
13<\/td>\n6.3 Uncertainty due to the setup
6.4 Uncertainty due to the power meter
6.5 Random uncertainties
6.5.1 Uncertainty due to fibre manipulation <\/td>\n<\/tr>\n
14<\/td>\n6.5.2 Uncertainties due to launch conditions <\/td>\n<\/tr>\n
15<\/td>\n6.6 Example of uncertainty accumulation
Figures
Figure 1 \u2013 Uncertainties due to the launch conditions for a given loss
Tables
Table 1 \u2013 Uncertainties accumulation <\/td>\n<\/tr>\n
16<\/td>\n7 Encircled flux envelope \u2013 theory and assumptions
7.1 Mode field eigenfunctions <\/td>\n<\/tr>\n
18<\/td>\n7.2 Connections, attenuation and the encircled flux template <\/td>\n<\/tr>\n
19<\/td>\n7.3 Target weights <\/td>\n<\/tr>\n
20<\/td>\nFigure 2 \u2013 Comparison of target weights <\/td>\n<\/tr>\n
21<\/td>\nFigure 3 \u2013 Incremental loss using OFL launch <\/td>\n<\/tr>\n
22<\/td>\n7.4 Coupling matrix calculations
Figure 4 \u2013 Incremental loss using target launch <\/td>\n<\/tr>\n
23<\/td>\n8 Wavelength bias correction to EF targets\/limits with spectrally broad sources
8.1 General
8.2 Modified spectrum assumptions <\/td>\n<\/tr>\n
24<\/td>\n8.3 Determining the EF targets
Table 2 \u2013 Percent variation for best fit against target to derive adjustmentfor encircled flux for 50 \u00b5m MMF <\/td>\n<\/tr>\n
25<\/td>\n8.4 Determining the EF limits
Table 3 \u2013 Encircled flux adjustment at 850 nm for 50 \u00b5m multimode fibre
Table 4 \u2013 Encircled flux adjustment at 1 300 nm for 50 \u00b5m multimode fibre <\/td>\n<\/tr>\n
26<\/td>\n8.5 Validating the EF limits
Table 5 \u2013 Calculated encircled flux limits for 50 \u00b5m multimodefibre at 850 nm and 1 300 nm <\/td>\n<\/tr>\n
28<\/td>\nAnnex A (informative) IEC international standards related to multimode launch conditions
Table A.1 \u2013 Standards for multimode launch condition <\/td>\n<\/tr>\n
30<\/td>\nAnnex B (informative) Coupled power ratio measurement for fibre-optic sources
Table B.1 \u2013 Light source characteristics <\/td>\n<\/tr>\n
31<\/td>\nTable B.2 \u2013 Light source categorization by CPR value (850 nm wavelength, CPR\u00a0values\u00a0in\u00a0decibels)
Table B.3 \u2013 Light source categorization by CPR value (1\u00a0300 nm wavelength, CPR\u00a0values\u00a0in\u00a0decibels) <\/td>\n<\/tr>\n
32<\/td>\nAnnex C (informative) Limits on RPD and MPD <\/td>\n<\/tr>\n
33<\/td>\nFigure C.1 \u2013 Example of a characteristic MTF <\/td>\n<\/tr>\n
35<\/td>\nFigure C.2 \u2013 Relative power distribution (RPD) specification
Figure C.3 \u2013 Example of a characteristic MPD <\/td>\n<\/tr>\n
36<\/td>\nFigure C.4 \u2013 MPD (Modal power distribution) specification <\/td>\n<\/tr>\n
37<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Fibre optic communication system design guides – Multimode launch conditions<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2012<\/td>\n40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":247735,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[648,2641],"product_tag":[],"class_list":{"0":"post-247732","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-180-01","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\/247732","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\/247735"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=247732"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=247732"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=247732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}