{"id":48686,"date":"2022-02-15T13:25:16","date_gmt":"2022-02-15T05:25:16","guid":{"rendered":"https:\/\/www.honecable.com\/g657a2-vs-g652d-confronto-resistenza-alla-flessione\/"},"modified":"2022-02-15T13:25:17","modified_gmt":"2022-02-15T05:25:17","slug":"g657a2-vs-g652d-confronto-resistenza-alla-flessione","status":"publish","type":"post","link":"https:\/\/www.honecable.com\/it\/g657a2-vs-g652d-confronto-resistenza-alla-flessione\/","title":{"rendered":"Confronto reale della resistenza alla flessione della fibra G.657A2 contro G.652D"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--link_hover_color: #1e73be;--link_color: #1e73be;--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-right:0px;--awb-padding-left:0px;--awb-padding-right-medium:0px;--awb-padding-left-medium:0px;--awb-padding-right-small:0px;--awb-padding-left-small:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-justify-content-space-between fusion-flex-content-wrap\" style=\"max-width:1300px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-padding-right-small:0px;--awb-padding-left-small:0px;--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:0%;--awb-spacing-left-small:0%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><div class=\"lake-content\">\n<\/p>\n<p id=\"u43cf2f4f\" class=\"ne-p\"><span class=\"ne-text\">Sappiamo tutti che la fibra monomodale ha grandi prestazioni di trasmissione a lunga distanza. E ci sono ulteriori requisiti sulla fibra monomodale, come la resistenza alla perdita di flessione. <\/span><\/p>\n<p id=\"udcf92fc6\" class=\"ne-p\"><span class=\"ne-text\">HOC (Hone Optical Communications) ha pi\u00f9 di 19 anni di esperienza nelle comunicazioni ottiche. Scopriamo di pi\u00f9 su questo problema.<\/span><\/p>\n<\/div>\n<\/div><div class=\"fusion-text fusion-text-2\"><div class=\"lake-content\">\n<h3 id=\"TIdlb\" class=\"fusion-responsive-typography-calculated\" style=\"--fontsize: 28; line-height: 1.36; --minfontsize: 28;\" data-fontsize=\"28\" data-lineheight=\"38.08px\"><span class=\"ne-text\">Tipo di fibra monomodale<\/span><\/h3>\n<p id=\"u2c3326ec\" class=\"ne-p\"><span class=\"ne-text\"><b>La fibra ottica G.657<\/b> \u00e8 anche chiamata fibra ottica monomodale insensibile alla flessione. \u00c8 usato nel cavo ottico che \u00e8 pi\u00f9 sottile della linea telefonica ordinaria. <\/span><\/p>\n<p id=\"u2c3326ec\" class=\"ne-p\"><span class=\"ne-text\">Senza la fibra G.657, non ci sar\u00e0 un&#8217;applicazione su larga scala di FTTH (Fiber to The Home). \u00c8 diviso in diverse sottocategorie, e G.657A2 \u00e8 comunemente usato al momento.<\/span><\/p>\n<p id=\"u91f72017\" class=\"ne-p\"><span class=\"ne-text\"><b>La fibra ottica G. 652<\/b> \u00e8 la fibra ottica pi\u00f9 usata nella MAN (Metropolitan Area Network). Tranne il cavo FTTH, \u00e8 fondamentalmente la fibra ottica G.652 che \u00e8 stata usata in altre reti di comunicazione. \u00c8 diviso in 4 sottocategorie. E il G.652D \u00e8 il pi\u00f9 usato attualmente.<\/span><\/p>\n<p id=\"u91f72017\" class=\"ne-p\">Quindi, quanto \u00e8 buona la resistenza alla flessione della fibra G.657A2 rispetto alla fibra G.652D?<\/p>\n<\/div>\n<div class=\"lake-content\">\n<h3 id=\"h2S0c\" class=\"fusion-responsive-typography-calculated\" style=\"--fontsize: 28; line-height: 1.36; --minfontsize: 28;\" data-fontsize=\"28\" data-lineheight=\"38.08px\"><span class=\"ne-text\">Cos&#8217;\u00e8 il raggio di curvatura<\/span><\/h3>\n<p id=\"uec208a6d\" class=\"ne-p\"><span class=\"ne-text\">Nell&#8217;industria della fibra ottica, il raggio di curvatura della fibra ottica che pu\u00f2 essere piegata o ritorta \u00e8 chiamato raggio di curvatura. In termini pi\u00f9 semplici, il raggio minimo ammissibile che pu\u00f2 piegare la fibra ottica senza danneggiare, piegare o accorciare la sua vita utile \u00e8 chiamato raggio di curvatura.<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/tse1-mm.cn.bing.net\/th\/id\/R-C.aec65f338eb16593465c2f0e9f40e021?rik=H8lcTnK2asRB3g&amp;riu=http%3a%2f%2fwww.fiber-optic-transceiver-module.com%2fwp-content%2fuploads%2f2015%2f12%2fBend-Insensitive-Fiber.jpg&amp;ehk=mgdnlHGaaVmBa6hhXkRHGGLBmkRVz63RVmHyWljEkks%3d&amp;risl=&amp;pid=ImgRaw&amp;r=0\"><\/p>\n<p id=\"uec208a6d\" class=\"ne-p\"><span class=\"ne-text\">Le varie fibre ottiche hanno caratteristiche diverse e strutture fisiche diverse, per cui il raggio di curvatura ammissibile tra le fibre ottiche \u00e8 diverso. Tipicamente, le fibre ottiche hanno un raggio di curvatura minimo specificato. Tuttavia, si raccomanda che il raggio minimo di curvatura sia tenuto circa 10 volte pi\u00f9 piccolo del diametro esterno della fibra ottica. Pertanto, il raggio di curvatura di un cavo in fibra ottica di 4 mm non dovrebbe essere inferiore a 40 mm.<\/span><\/p>\n<\/div>\n<div class=\"lake-content\">\n<h3 id=\"RxL3c\" class=\"fusion-responsive-typography-calculated\" style=\"--fontsize: 28; line-height: 1.36; --minfontsize: 28;\" data-fontsize=\"28\" data-lineheight=\"38.08px\"><span class=\"ne-text\">Raggio minimo di curvatura standard<\/span><\/h3>\n<p id=\"u5fff204c\" class=\"ne-p\"><span class=\"ne-text\">In <\/span><a class=\"ne-link\" href=\"https:\/\/www.itu.int\/rec\/T-REC-G.657\/en\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.itu.int\/rec\/T-REC-G.657\/en\" data-><span class=\"ne-text\">Standard ITU-T<\/span><\/a><span class=\"ne-text\">il raggio minimo di curvatura della fibra ottica G.657A2 \u00e8 raccomandato a 7.5mm. Mentre il raggio minimo di curvatura della fibra ottica G.652 deve essere non meno di 30mm. <\/span><\/p>\n<p id=\"u0d51450c\" class=\"ne-p\"><span class=\"ne-text\">Ma il significato del raggio minimo di curvatura \u00e8 completamente diverso. Il raggio di curvatura minimo della fibra ottica G657A2 si riferisce al fatto che l&#8217;attenuazione aggiuntiva misurata a 1550nm\/1625nm quando il cavo in fibra ottica \u00e8 in un giro sciolto di 7.5mm di raggio non deve superare 0.5dB\/1.0dB.<\/span><\/p>\n<p id=\"uc32dc09c\" class=\"ne-p\"><span class=\"ne-text\">Il raggio di curvatura minimo della fibra ottica G652D si riferisce al fatto che la fibra ottica \u00e8 liberamente avvolta per 100 giri con un raggio di 30mm, e l&#8217;attenuazione aggiuntiva misurata a 1625nm non supera 0.1dB.<\/span><\/p>\n<p id=\"u3216fd28\" class=\"ne-p\"><span class=\"ne-text\">La perdita aggiuntiva causata dalla piegatura della fibra ottica con raggio di curvatura molto pi\u00f9 grande del suo diametro \u00e8 chiamata perdita da macroflessione. Le caratteristiche di macropiegatura della fibra ottica G.657A2 e della fibra ottica G.652D sono mostrate nella tabella sottostante.<\/span><\/p>\n<\/div>\n<style type=\"text\/css\" id=\"supsystic-table-80_85355-css\">#supsystic-table-80_wrapper table { border-collapse: collapse; }#supsystic-table-80_wrapper table.stripe tbody tr.even { }#supsystic-table-80_wrapper table.stripe.order-column tbody tr > .sorting_1 { }#supsystic-table-80_wrapper table.hover tbody tr:hover { }#supsystic-table-80_wrapper table.stripe.order-column tbody tr.even > .sorting_1 { }#supsystic-table-80_wrapper table.order-column tbody tr > .sorting_1 { }#supsystic-table-80_wrapper table.hover.order-column tbody tr:hover > .sorting_1 { }#supsystic-table-80_wrapper tbody td { background-color: inherit; }#supsystic-table-80 { border: 1px solid rgb(209, 209, 209) !important; }#supsystic-table-80_wrapper tbody tr:first-child td { border-top: none; }#supsystic-table-80_wrapper tbody tr:last-child td { border-bottom: 1px solid rgb(209, 209, 209); }#supsystic-table-80_wrapper td { border-right: 1px solid rgb(209, 209, 209); border-left: 1px solid rgb(209, 209, 209); border-top: 1px solid rgb(209, 209, 209); font-size: 14px; }#supsystic-table-80_wrapper .child table { border-collapse: collapse; }#supsystic-table-80_wrapper th { font-size: 18px; color: rgb(255, 255, 255); border: 1px solid rgb(209, 209, 209) !important; background-color: rgb(30, 115, 190) !important; }\/* Here you can add custom CSS for the current table *\/\n\/* Lean more about CSS: https:\/\/en.wikipedia.org\/wiki\/Cascading_Style_Sheets *\/\n\/*\nTo prevent the use of styles to other tables use \"#supsystic-table-80\" as a base selector\nfor example:\n#supsystic-table-80 { ... }\n#supsystic-table-80 tbody { ... }\n#supsystic-table-80 tbody tr { ... }\n*\/\n#fa fa-fw fa-pencil\n{\n  display:none\n}\n\n\n<\/style>\n<div class=\"supsystic-table-loader spinner\"style=\"background-color:#000000\"><\/div><div id=\"supsystic-table-80_85355\" class=\"supsystic-tables-wrap \" style=\" display: inline-block; width:auto; visibility: hidden; \" data-table-width-fixed=\"auto\" data-table-width-mobile=\"auto\" ><table id=\"supsystic-table-80\" class=\"supsystic-table border lightboxImg no-border\" data-id=\"80\" data-view-id=\"80_85355\" data-title=\"single mode fiber bending standard\" data-currency-format=\"$1,000.00\" data-percent-format=\"10.00%\" data-date-format=\"DD.MM.YYYY\" data-time-format=\"HH:mm\" data-features=\"[&quot;after_table_loaded_script&quot;]\" data-search-value=\"\" data-lightbox-img=\"\" data-head=\"on\" data-head-rows-count=\"1\" data-pagination-length=\"50,100,All\" data-auto-index=\"off\" data-searching-settings=\"{&quot;columnSearchPosition&quot;:&quot;bottom&quot;,&quot;minChars&quot;:&quot;0&quot;}\" data-lang=\"default\" data-override=\"{&quot;emptyTable&quot;:&quot;&quot;,&quot;info&quot;:&quot;&quot;,&quot;infoEmpty&quot;:&quot;&quot;,&quot;infoFiltered&quot;:&quot;&quot;,&quot;lengthMenu&quot;:&quot;&quot;,&quot;search&quot;:&quot;&quot;,&quot;zeroRecords&quot;:&quot;&quot;,&quot;exportLabel&quot;:&quot;&quot;,&quot;file&quot;:&quot;default&quot;}\" data-merged=\"[{&quot;row&quot;:0,&quot;col&quot;:0,&quot;rowspan&quot;:1,&quot;colspan&quot;:2,&quot;removed&quot;:false},{&quot;row&quot;:1,&quot;col&quot;:0,&quot;rowspan&quot;:2,&quot;colspan&quot;:1,&quot;removed&quot;:false},{&quot;row&quot;:3,&quot;col&quot;:0,&quot;rowspan&quot;:2,&quot;colspan&quot;:1,&quot;removed&quot;:false}]\" data-responsive-mode=\"0\" data-from-history=\"0\" style=\"width:auto;\" ><thead><tr><th data-cell-id=\"A1\" data-x=\"0\" data-y=\"1\" data-db-index=\"1\" class=\"color-ffffff bg-012a60 htCenter bold htMiddle\" data-cell-type=\"text\" data-original-value=\"Single Mode Fiber Type\" data-order=\"Single Mode Fiber Type\" style=\"min-width:auto; width:auto;\" data-colspan=\"2\" data-rowspan=\"1\" >Single Mode Fiber Type <\/th><th data-cell-id=\"B1\" data-x=\"1\" data-y=\"1\" data-db-index=\"1\" class=\"color-ffffff bg-012a60 htCenter bold htMiddle\" data-cell-type=\"text\" data-original-value=\"\" data-order=\"\" style=\"min-width:auto; width:auto;\" data-hide=\"true\" ><\/th><th data-cell-id=\"C1\" data-x=\"2\" data-y=\"1\" data-db-index=\"1\" class=\"color-ffffff bg-012a60 htCenter bold htMiddle\" data-cell-type=\"text\" data-original-value=\"G.657A2\" data-order=\"G.657A2\" style=\"min-width:auto; width:auto;\" >G.657A2 <\/th><th data-cell-id=\"D1\" data-x=\"3\" data-y=\"1\" data-db-index=\"1\" class=\"color-ffffff bg-012a60 htCenter bold htMiddle\" data-cell-type=\"text\" data-original-value=\"G.652D\" data-order=\"G.652D\" style=\"min-width:auto; width:auto;\" >G.652D <\/th><\/tr><\/thead><tbody><tr style=\"height:39px\" ><td data-cell-id=\"A2\" data-x=\"0\" data-y=\"2\" data-db-index=\"2\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-original-value=\"Condition\" data-order=\"Condition\" data-colspan=\"1\" data-rowspan=\"2\" >Condition <\/td><td data-cell-id=\"B2\" data-x=\"1\" data-y=\"2\" data-db-index=\"2\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"Bending Radius (mm)\" data-order=\"Bending Radius (mm)\" >Bending Radius (mm) <\/td><td data-cell-id=\"C2\" data-x=\"2\" data-y=\"2\" data-db-index=\"2\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"7.5\" data-order=\"7.5\" >7.5 <\/td><td data-cell-id=\"D2\" data-x=\"3\" data-y=\"2\" data-db-index=\"2\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"30\" data-order=\"30\" >30 <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A3\" data-x=\"0\" data-y=\"3\" data-db-index=\"3\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"\" data-order=\"\" data-hide=\"true\" ><\/td><td data-cell-id=\"B3\" data-x=\"1\" data-y=\"3\" data-db-index=\"3\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"Turns\" data-order=\"Turns\" >Turns <\/td><td data-cell-id=\"C3\" data-x=\"2\" data-y=\"3\" data-db-index=\"3\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"1\" data-order=\"1\" >1 <\/td><td data-cell-id=\"D3\" data-x=\"3\" data-y=\"3\" data-db-index=\"3\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"100\" data-order=\"100\" >100 <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A4\" data-x=\"0\" data-y=\"4\" data-db-index=\"4\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"Macrobending Loss\" data-order=\"Macrobending Loss\" data-colspan=\"1\" data-rowspan=\"2\" >Macrobending Loss <\/td><td data-cell-id=\"B4\" data-x=\"1\" data-y=\"4\" data-db-index=\"4\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"1550nm\" data-order=\"1550nm\" >1550nm <\/td><td data-cell-id=\"C4\" data-x=\"2\" data-y=\"4\" data-db-index=\"4\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"0.5dB\" data-order=\"0.5dB\" >0.5dB <\/td><td data-cell-id=\"D4\" data-x=\"3\" data-y=\"4\" data-db-index=\"4\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"-\" data-order=\"-\" >- <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A5\" data-x=\"0\" data-y=\"5\" data-db-index=\"5\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"\" data-order=\"\" data-hide=\"true\" ><\/td><td data-cell-id=\"B5\" data-x=\"1\" data-y=\"5\" data-db-index=\"5\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"1625nm\" data-order=\"1625nm\" >1625nm <\/td><td data-cell-id=\"C5\" data-x=\"2\" data-y=\"5\" data-db-index=\"5\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"1.0dB\" data-order=\"1.0dB\" >1.0dB <\/td><td data-cell-id=\"D5\" data-x=\"3\" data-y=\"5\" data-db-index=\"5\" class=\"htCenter color-000000 htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"0.1dB\" data-order=\"0.1dB\" >0.1dB <\/td><\/tr><\/tbody><\/table><!-- \/#supsystic-table-80.supsystic-table --><\/div><!-- \/.supsystic-tables-wrap --><!-- Tables Generator by Supsystic --><!-- Version:1.10.36 --><!-- http:\/\/supsystic.com\/ -->\n<div class=\"lake-content\">\n<div class=\"lake-content\">\n<p id=\"uf630bc93\" class=\"ne-p\"><span class=\"ne-text\">Ovviamente, non c&#8217;\u00e8 comparabilit\u00e0 tra il raggio minimo di curvatura della fibra G.657A2 e la fibra G.652D.<\/span><\/p>\n<\/div>\n<div class=\"lake-content\">\n<h3 id=\"pwmXy\" class=\"fusion-responsive-typography-calculated\" style=\"--fontsize: 28; line-height: 1.36; --minfontsize: 28;\" data-fontsize=\"28\" data-lineheight=\"38.08px\"><span class=\"ne-text\">Confronto reale<\/span><\/h3>\n<p id=\"u2d52e1a7\" class=\"ne-p\"><span class=\"ne-text\">Quando il cavo FTTH viene introdotto e installato, per facilitare la fine del cavo FTTH, il personale di installazione e manutenzione spesso fonde una piccola sezione di pigtail in fibra sul cavo FTTH alla scatola di distribuzione della fibra e all&#8217;ONT (Optical Network Terminal).<\/span><\/p>\n<p><img decoding=\"async\" class=\"wp-image-8051 size-fusion-600 aligncenter\" src=\"http:\/\/honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-600x449.jpg\" alt=\"G.657A2 vs. G.652D confronto reale\" width=\"600\" height=\"449\" srcset=\"https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-200x150.jpg 200w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-300x225.jpg 300w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-400x299.jpg 400w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-500x374.jpg 500w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-600x449.jpg 600w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-700x524.jpg 700w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-768x575.jpg 768w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-800x599.jpg 800w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-1024x767.jpg 1024w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-1200x898.jpg 1200w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box-1280x958.jpg 1280w, https:\/\/www.honecable.com\/wp-content\/uploads\/2021\/08\/G.657A2-fiber-optic-cable-in-FTTH-Box.jpg 1440w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p id=\"u3d1ed841\" class=\"ne-p\"><span class=\"ne-text\">Nell&#8217;immagine, il tipo di fibra ottica nel pigtail \u00e8 G.652D, e la fibra monomodale nel cavo FTTH \u00e8 G.657A2.<\/span><\/p>\n<p id=\"u5963b15a\" class=\"ne-p\"><span class=\"ne-text\">Poich\u00e9 il pigtail in fibra e il cavo FTTH sono nella stessa scatola di distribuzione, e le dimensioni del cavo sono simili (il diametro del pigtail \u00e8 2.0mm e il diametro del cavo FTTH \u00e8 2.0mm \/ 3.0mm), \u00e8 pi\u00f9 pratico confrontare la resistenza alla flessione. Pertanto, pu\u00f2 fondamentalmente riflettere la differenza tra G.652D e G.657A2.<\/span><\/p>\n<p id=\"u0781c12a\" class=\"ne-p\"><span class=\"ne-text\">Poich\u00e9 la perdita di macropiegatura della fibra ottica in ODN \u00e8 principalmente influenzata dalla lunghezza d&#8217;onda del downlink, viene testata solo la perdita aggiuntiva della fibra di coda e del cavo ottico in entrata che avvolge un cerchio con raggio diverso alla lunghezza d&#8217;onda 1490nm. Alcuni stampi testati sono mostrati nella figura qui sotto.<\/span><\/p>\n<\/div>\n<\/div>\n<style type=\"text\/css\" id=\"supsystic-table-81_72300-css\">#supsystic-table-81_wrapper table { border-collapse: collapse; }#supsystic-table-81_wrapper table.stripe tbody tr.even { }#supsystic-table-81_wrapper table.stripe.order-column tbody tr > .sorting_1 { }#supsystic-table-81_wrapper table.hover tbody tr:hover { }#supsystic-table-81_wrapper table.stripe.order-column tbody tr.even > .sorting_1 { }#supsystic-table-81_wrapper table.order-column tbody tr > .sorting_1 { }#supsystic-table-81_wrapper table.hover.order-column tbody tr:hover > .sorting_1 { }#supsystic-table-81_wrapper tbody td { background-color: inherit; }#supsystic-table-81 { border: 1px solid rgb(209, 209, 209) !important; }#supsystic-table-81_wrapper tbody tr:first-child td { border-top: none; }#supsystic-table-81_wrapper tbody tr:last-child td { border-bottom: 1px solid rgb(209, 209, 209); }#supsystic-table-81_wrapper td { border-right: 1px solid rgb(209, 209, 209); border-left: 1px solid rgb(209, 209, 209); border-top: 1px solid rgb(209, 209, 209); font-size: 14px; }#supsystic-table-81_wrapper .child table { border-collapse: collapse; }#supsystic-table-81_wrapper th { font-size: 18px; color: rgb(255, 255, 255); border: 1px solid rgb(209, 209, 209) !important; background-color: rgb(30, 115, 190) !important; }\/* Here you can add custom CSS for the current table *\/\n\/* Lean more about CSS: https:\/\/en.wikipedia.org\/wiki\/Cascading_Style_Sheets *\/\n\/*\nTo prevent the use of styles to other tables use \"#supsystic-table-81\" as a base selector\nfor example:\n#supsystic-table-81 { ... }\n#supsystic-table-81 tbody { ... }\n#supsystic-table-81 tbody tr { ... }\n*\/\n#fa fa-fw fa-pencil\n{\n  display:none\n}\n\n\n<\/style>\n<div class=\"supsystic-table-loader spinner\"style=\"background-color:#000000\"><\/div><div id=\"supsystic-table-81_72300\" class=\"supsystic-tables-wrap \" style=\" display: inline-block; width:auto; visibility: hidden; \" data-table-width-fixed=\"auto\" data-table-width-mobile=\"auto\" ><table id=\"supsystic-table-81\" class=\"supsystic-table border lightboxImg no-border\" data-id=\"81\" data-view-id=\"81_72300\" data-title=\"single mode fiber bending Testing\" data-currency-format=\"$1,000.00\" data-percent-format=\"10.00%\" data-date-format=\"DD.MM.YYYY\" data-time-format=\"HH:mm\" data-features=\"[&quot;after_table_loaded_script&quot;]\" data-search-value=\"\" data-lightbox-img=\"\" data-head=\"on\" data-head-rows-count=\"1\" data-pagination-length=\"50,100,All\" data-auto-index=\"off\" data-searching-settings=\"{&quot;columnSearchPosition&quot;:&quot;bottom&quot;,&quot;minChars&quot;:&quot;0&quot;}\" data-lang=\"default\" data-override=\"{&quot;emptyTable&quot;:&quot;&quot;,&quot;info&quot;:&quot;&quot;,&quot;infoEmpty&quot;:&quot;&quot;,&quot;infoFiltered&quot;:&quot;&quot;,&quot;lengthMenu&quot;:&quot;&quot;,&quot;search&quot;:&quot;&quot;,&quot;zeroRecords&quot;:&quot;&quot;,&quot;exportLabel&quot;:&quot;&quot;,&quot;file&quot;:&quot;default&quot;}\" data-merged=\"[{&quot;row&quot;:0,&quot;col&quot;:1,&quot;rowspan&quot;:1,&quot;colspan&quot;:2,&quot;removed&quot;:false}]\" data-responsive-mode=\"0\" data-from-history=\"0\" style=\"width:auto;\" ><thead><tr><th data-cell-id=\"A1\" data-x=\"0\" data-y=\"1\" data-db-index=\"1\" class=\"color-ffffff bg-012a60 htCenter bold htMiddle\" data-cell-type=\"text\" data-original-value=\"Bending Radius (mm)\" data-order=\"Bending Radius (mm)\" style=\"min-width:auto; width:auto;\" >Bending Radius (mm) <\/th><th data-cell-id=\"B1\" data-x=\"1\" data-y=\"1\" data-db-index=\"1\" class=\"color-ffffff bg-012a60 htCenter bold htMiddle\" data-cell-type=\"text\" data-original-value=\"Macrobending Loss (dB)\" data-order=\"Macrobending Loss (dB)\" style=\"min-width:auto; width:auto;\" data-colspan=\"2\" data-rowspan=\"1\" >Macrobending Loss (dB) <\/th><th data-cell-id=\"C1\" data-x=\"2\" data-y=\"1\" data-db-index=\"1\" class=\"color-ffffff bg-012a60 htCenter bold htMiddle\" data-cell-type=\"text\" data-original-value=\"\" data-order=\"\" style=\"min-width:auto; width:auto;\" data-hide=\"true\" ><\/th><\/tr><\/thead><tbody><tr style=\"height:39px\" ><td data-cell-id=\"A2\" data-x=\"0\" data-y=\"2\" data-db-index=\"2\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"\" data-order=\"\" ><\/td><td data-cell-id=\"B2\" data-x=\"1\" data-y=\"2\" data-db-index=\"2\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"FTTH Cable (G.657A2)\" data-order=\"FTTH Cable (G.657A2)\" >FTTH Cable (G.657A2) <\/td><td data-cell-id=\"C2\" data-x=\"2\" data-y=\"2\" data-db-index=\"2\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"Fiber Pigtail (G.652D)\" data-order=\"Fiber Pigtail (G.652D)\" >Fiber Pigtail (G.652D) <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A3\" data-x=\"0\" data-y=\"3\" data-db-index=\"3\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"10.0\" data-order=\"10.0\" >10.0 <\/td><td data-cell-id=\"B3\" data-x=\"1\" data-y=\"3\" data-db-index=\"3\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"0.02\" data-order=\"0.02\" >0.02 <\/td><td data-cell-id=\"C3\" data-x=\"2\" data-y=\"3\" data-db-index=\"3\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"0.18\" data-order=\"0.18\" >0.18 <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A4\" data-x=\"0\" data-y=\"4\" data-db-index=\"4\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"7.5\" data-order=\"7.5\" >7.5 <\/td><td data-cell-id=\"B4\" data-x=\"1\" data-y=\"4\" data-db-index=\"4\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"0.06\" data-order=\"0.06\" >0.06 <\/td><td data-cell-id=\"C4\" data-x=\"2\" data-y=\"4\" data-db-index=\"4\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"1.6\" data-order=\"1.6\" >1.6 <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A5\" data-x=\"0\" data-y=\"5\" data-db-index=\"5\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"5.0\" data-order=\"5.0\" >5.0 <\/td><td data-cell-id=\"B5\" data-x=\"1\" data-y=\"5\" data-db-index=\"5\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"0.37\" data-order=\"0.37\" >0.37 <\/td><td data-cell-id=\"C5\" data-x=\"2\" data-y=\"5\" data-db-index=\"5\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"8.13\" data-order=\"8.13\" >8.13 <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A6\" data-x=\"0\" data-y=\"6\" data-db-index=\"6\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"3.8\" data-order=\"3.8\" >3.8 <\/td><td data-cell-id=\"B6\" data-x=\"1\" data-y=\"6\" data-db-index=\"6\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"0.65\" data-order=\"0.65\" >0.65 <\/td><td data-cell-id=\"C6\" data-x=\"2\" data-y=\"6\" data-db-index=\"6\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"15.61\" data-order=\"15.61\" >15.61 <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A7\" data-x=\"0\" data-y=\"7\" data-db-index=\"7\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"2.5\" data-order=\"2.5\" >2.5 <\/td><td data-cell-id=\"B7\" data-x=\"1\" data-y=\"7\" data-db-index=\"7\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"1.71\" data-order=\"1.71\" >1.71 <\/td><td data-cell-id=\"C7\" data-x=\"2\" data-y=\"7\" data-db-index=\"7\" class=\"htCenter htMiddle\" data-cell-type=\"text\" data-original-value=\"-\" data-order=\"-\" >- <\/td><\/tr><tr style=\"height:39px\" ><td data-cell-id=\"A8\" data-x=\"0\" data-y=\"8\" data-db-index=\"8\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"1.5\" data-order=\"1.5\" >1.5 <\/td><td data-cell-id=\"B8\" data-x=\"1\" data-y=\"8\" data-db-index=\"8\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"6.68\" data-order=\"6.68\" >6.68 <\/td><td data-cell-id=\"C8\" data-x=\"2\" data-y=\"8\" data-db-index=\"8\" class=\"color-000000 htCenter htMiddle\" data-cell-type=\"text\" data-cell-format-type=\"number\" data-original-value=\"-\" data-order=\"-\" >- <\/td><\/tr><\/tbody><\/table><!-- \/#supsystic-table-81.supsystic-table --><\/div><!-- \/.supsystic-tables-wrap --><!-- Tables Generator by Supsystic --><!-- Version:1.10.36 --><!-- http:\/\/supsystic.com\/ -->\n<div class=\"lake-content\">\n<div class=\"lake-content\">\n<p id=\"u21322fa4\" class=\"ne-p\"><span class=\"ne-text\">Si pu\u00f2 vedere dai risultati del test che il cavo ottico FTTH in entrata (G.657A2) ha una maggiore resistenza alla flessione rispetto a quella del cavo pigtail in fibra (G.652D), specialmente sotto piccolo raggio di curvatura.<\/span><\/p>\n<\/div>\n<div class=\"lake-content\">\n<div class=\"lake-content\">\n<h3 id=\"T1YmP\" class=\"fusion-responsive-typography-calculated\" style=\"--fontsize: 28; line-height: 1.36; --minfontsize: 28;\" data-fontsize=\"28\" data-lineheight=\"38.08px\"><span class=\"ne-text\">Conclusione<\/span><\/h3>\n<p id=\"u96a503d0\" class=\"ne-p\"><span class=\"ne-text\">A causa della grande differenza di resistenza alla flessione tra la fibra monomodale G.657A2 e G.652D, e il patch cord in fibra pigtail stesso \u00e8 relativamente morbido, \u00e8 molto facile da piegare con un piccolo raggio nell&#8217;applicazione.<\/span><\/p>\n<p id=\"u7d75e785\" class=\"ne-p\"><span class=\"ne-text\">Secondo i dati statistici del fallimento dell&#8217;installazione e della manutenzione in una rete metropolitana, il fallimento della rete causato dal raggio di curvatura insufficiente del patch cord in fibra rappresenta fino al 50%. <\/span><\/p>\n<p id=\"u73e43894\" class=\"ne-p\"><span class=\"ne-text\">Pertanto, \u00e8 consigliabile utilizzare il cavo in fibra con G.657A2 per terminare il cavo ottico in entrata durante l&#8217;installazione FTTH.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling fusion-no-large-visibility\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-right:60px;--awb-padding-left:60px;--awb-padding-top-medium:60px;--awb-padding-right-medium:0px;--awb-padding-left-medium:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1300px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:72%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.6666666666667%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2.6666666666667%;--awb-width-medium:72%;--awb-order-medium:0;--awb-spacing-right-medium:2.6666666666667%;--awb-spacing-left-medium:2.6666666666667%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:0%;--awb-spacing-left-small:0%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-3\"><p style=\"font-size: 22px;\" data-fusion-font=\"true\"><b><a href=\"http:\/\/honecable.com\/news\/\" target=\"_blank\" rel=\"noopener\">HOC | Notizie<\/a><\/b><\/p>\n<p style=\"font-size: 16px;\" data-fusion-font=\"true\">Ultime notizie e aggiornamenti direttamente da HOC<\/p>\n<p style=\"font-size: 14px;\" data-fusion-font=\"true\"><a href=\"http:\/\/honecable.com\/news\/\" target=\"_blank\" rel=\"noopener\">Leggi di pi\u00f9<\/a><\/p>\n<\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":42833,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":"","_vp_format_video_url":"","_vp_image_focal_point":[]},"categories":[1246],"tags":[],"_links":{"self":[{"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/posts\/48686"}],"collection":[{"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/comments?post=48686"}],"version-history":[{"count":0,"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/posts\/48686\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/media\/42833"}],"wp:attachment":[{"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/media?parent=48686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/categories?post=48686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.honecable.com\/it\/wp-json\/wp\/v2\/tags?post=48686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}