{"id":13794,"date":"2025-09-03T15:51:00","date_gmt":"2025-09-03T07:51:00","guid":{"rendered":"https:\/\/hkcablemachine.com\/?page_id=13794"},"modified":"2025-09-04T16:45:20","modified_gmt":"2025-09-04T08:45:20","slug":"loose-tube-sz-pitch-study","status":"publish","type":"page","link":"https:\/\/hkcablemachine.com\/vi\/loose-tube-sz-pitch-study\/","title":{"rendered":"Loose-Tube SZ Pitch Study v1"},"content":{"rendered":"<h2 class=\"wp-block-heading\">T\u00f3m t\u1eaft qu\u1ea3n l\u00fd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nghi\u00ean c\u1ee9u n\u00e0y \u0111i\u1ec1u tra c\u00e1ch \u0111\u1ed9 d\u00e0i b\u01b0\u1edbc SZ \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn suy gi\u1ea3m quang h\u1ecdc v\u00e0 \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a vi\u1ec7c \u0111i\u1ec1n \u1ed1ng trong c\u00e1p quang d\u1ea1ng l\u1ecfng. Khi k\u00e9o d\u00e0i \u0111\u1ed9 d\u00e0i b\u01b0\u1edbc th\u00eam 10%, suy gi\u1ea3m \u0111\u01b0\u1ee3c gi\u1ea3m b\u1edfi <strong>0.2 dB\/km<\/strong> t\u1ea1i 1310 nm v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a vi\u1ec7c \u0111i\u1ec1n l\u00ean <strong>15%<\/strong> tr\u00ean ba h\u1ec7 th\u1ed1ng nh\u1ef1a\/keo. T\u1ea5t c\u1ea3 d\u1eef li\u1ec7u th\u00f4 (CSV) v\u00e0 ph\u01b0\u01a1ng ph\u00e1p chi ti\u1ebft (PDF) \u0111\u1ec1u \u0111\u01b0\u1ee3c c\u00f4ng khai \u0111\u1ec3 x\u00e1c minh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1eadp nh\u1eadt sau: thay \u201c\u0111ang ch\u1edd\u201d b\u1eb1ng Zenodo DOI khi \u0111\u01b0\u1ee3c c\u1ea5p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u01b0\u01a1ng ph\u00e1p<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Thi\u1ebft b\u1ecb:<\/strong> D\u00f2ng HK-LT-24 (fw v3.2.1); m\u00e1y th\u1eed quang JDSU MTS-6000; m\u00e1y th\u1eed u\u1ed1n XYZ-2000.<\/li>\n\n\n\n<li><strong>M\u00f4i tr\u01b0\u1eddng:<\/strong> 22 \u00b1 1 \u00b0C; 50 \u00b1 5% RH.<\/li>\n\n\n\n<li><strong>Ma tr\u1eadn:<\/strong> B\u01b0\u1edbc c\u01a1 s\u1edf 120 mm so v\u1edbi b\u01b0\u1edbc bi\u1ebfn th\u1ec3 132 mm (+10%); 3 t\u1ed5 h\u1ee3p nh\u1ef1a\/keo; 10 l\u1ea7n l\u1eb7p l\u1ea1i m\u1ed7i.<\/li>\n\n\n\n<li><strong>\u0110o l\u01b0\u1eddng:<\/strong> Suy gi\u1ea3m t\u1ea1i 1310\/1550 nm, \u0111\u1ed9 m\u00e9o (ovality) (%), \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a vi\u1ec7c \u0111i\u1ec1n (1\u20135 thang \u0111i\u1ec3m).<\/li>\n\n\n\n<li><strong>Ph\u00e2n t\u00edch:<\/strong> Ki\u1ec3m \u0111\u1ecbnh t Welch (\u03b1=0.05).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">K\u1ebft qu\u1ea3<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0110\u1ed9 d\u00e0i b\u01b0\u1edbc<\/th><th>Suy gi\u1ea3m (1310 nm, dB\/km)<\/th><th>Suy gi\u1ea3m (1550 nm, dB\/km)<\/th><th>\u0110\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a vi\u1ec7c \u0111i\u1ec1n (\u0111i\u1ec3m)<\/th><\/tr><\/thead><tbody><tr><td>C\u01a1 s\u1edf 120 mm<\/td><td>0.36 \u00b1 0.02<\/td><td>0.22 \u00b1 0.01<\/td><td>4.0 \u00b1 0.2<\/td><\/tr><tr><td>Phi\u00ean b\u1ea3n 132 mm<\/td><td>0.34 \u00b1 0.02<\/td><td>0.21 \u00b1 0.01<\/td><td>4.6 \u00b1 0.2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Vi\u1ec7c k\u00e9o d\u00e0i b\u01b0\u1edbc xo\u1eafn SZ \u0111\u00e3 c\u1ea3i thi\u1ec7n c\u1ea3 \u0111\u1ed9 suy gi\u1ea3m v\u00e0 t\u00ednh \u0111\u1ed3ng \u0111\u1ec1u.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea3i xu\u1ed1ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/hkcablemachine.com\/wp-content\/uploads\/2025\/09\/loose_tube_sz_pitch_v1.csv-header.csv\">T\u1ea3i xu\u1ed1ng CSV<\/a><a href=\"https:\/\/hkcablemachine.com\/wp-content\/uploads\/2025\/09\/Loose-Tube-SZ-Pitch-Study-v1.docx.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Ph\u01b0\u01a1ng ph\u00e1p T\u1ea3i xu\u1ed1ng PDF<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1ch tr\u00edch d\u1eabn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>APA<\/strong><br>Hongkai (2025). <em>Loose-Tube SZ Pitch Study v1<\/em>. Zenodo. https:\/\/doi.org\/pending<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">BibTeX<\/h4>\n\n\n\n<pre id=\"hk-lt-bib\" class=\"wp-block-preformatted\">@dataset{hongkai_2025_loose_tube_sz,\n  author    = {Hongkai Cable Machinery},\n  title     = {Loose-Tube SZ Pitch Study v1},\n  year      = {2025},\n  publisher = {Zenodo},\n  doi       = {pending},\n  url       = {https:\/\/doi.org\/pending},\n  version   = {v1.0}\n}<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"javascript:void(0)\">Sao ch\u00e9p BibTeX<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nghi\u00ean c\u1ee9u li\u00ean quan<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"\/fiber-optic-line-cost-model\/\">Fiber-Optic Line Cost Model v1<\/a> \u2013 Ph\u00e2n t\u00edch chi ph\u00ed minh b\u1ea1ch (nguy\u00ean v\u1eadt li\u1ec7u, lao \u0111\u1ed9ng, n\u0103ng l\u01b0\u1ee3ng, CAPEX) k\u00e8m ph\u00e2n t\u00edch th\u1eddi gian ho\u00e0n v\u1ed1n.<\/li>\n\n\n\n<li><a href=\"\/lan-pair-twist-benchmark\/\">LAN Ki\u1ec3m tra xo\u1eafn c\u1eb7p phi\u00ean b\u1ea3n 1<\/a> \u2013 So s\u00e1nh xo\u1eafn \u0111\u00f4i v\u1edbi xo\u1eafn ba v\u1ec1 n\u0103ng su\u1ea5t v\u00e0 bi\u00ean l\u1ee3i nhu\u1eadn NEXT; CSV &amp; ph\u01b0\u01a1ng ph\u00e1p.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Executive Summary This study investigates how SZ pitch length influences optical attenuation and tube fill uniformity in loose-tube optical cables. Extending pitch length by 10% reduced attenuation by 0.2 dB\/km at 1310 nm and improved fill uniformity by 15% across three resin\/gel systems. All raw data (CSV) and detailed methods (PDF) are openly available for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_angie_page":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-13794","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/pages\/13794","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/comments?post=13794"}],"version-history":[{"count":0,"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/pages\/13794\/revisions"}],"wp:attachment":[{"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/media?parent=13794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}