{"id":4875,"date":"2021-02-27T15:22:07","date_gmt":"2021-02-27T07:22:07","guid":{"rendered":"https:\/\/hkcablemachine.com\/?p=4875"},"modified":"2022-12-06T14:06:22","modified_gmt":"2022-12-06T06:06:22","slug":"why-fiber-optic-is-faster-than-copper","status":"publish","type":"post","link":"https:\/\/hkcablemachine.com\/vi\/tai-sao-cap-quang-nhanh-hon-cap-dong\/","title":{"rendered":"T\u1ea1i sao s\u1ee3i quang nhanh h\u01a1n \u0111\u1ed3ng | H\u1ed2NG KAI"},"content":{"rendered":"

B\u1ea1n c\u00f3 bao gi\u1edd t\u1ef1 h\u1ecfi t\u1ea1i sao c\u00e1p quang l\u1ea1i nhanh h\u01a1n c\u00e1p \u0111\u1ed3ng kh\u00f4ng?<\/em><\/h2>\n\n\n\n

C\u00e2u tr\u1ea3 l\u1eddi h\u00f3a ra kh\u00e1 th\u00fa v\u1ecb<\/p>\n\n\n\n

d\u00e2y \u0111\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m d\u00e2y \u0111i\u1ec7n k\u1ec3 t\u1eeb khi ph\u00e1t minh ra nam ch\u00e2m \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n b\u00e1o h\u00e0ng tr\u0103m n\u0103m tr\u01b0\u1edbc<\/p>\n\n\n\n

khi \u0111i\u1ec7n tho\u1ea1i \u0111\u01b0\u1ee3c ph\u00e1t minh v\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1800<\/p>\n\n\n\n

D\u00e2y \u0111\u1ed3ng \u0111\u00e3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho \u0111\u01b0\u1eddng d\u00e0i<\/p>\n\n\n\n

\u0110\u1ed3ng vi\u1ec5n th\u00f4ng s\u1ebd ch\u1ee9ng minh l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u v\u00f4 gi\u00e1 trong nhi\u1ec1u th\u1eadp k\u1ef7 t\u1edbi cho \u0111\u1ebfn khi ph\u00e1t minh ra s\u1ee3i quang v\u00e0o nh\u1eefng n\u0103m 1950<\/p>\n\n\n\n

trong khi ph\u1ea3i m\u1ea5t th\u00eam v\u00e0i th\u1eadp k\u1ef7 n\u1eefa th\u00ec c\u00e1p quang m\u1edbi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho vi\u1ec5n th\u00f4ng<\/p>\n\n\n\n

cu\u1ed1i c\u00f9ng n\u00f3 s\u1ebd thay th\u1ebf c\u00e1p \u0111\u1ed3ng cho nhi\u1ec1u m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng<\/p>\n\n\n\n

nh\u01b0ng t\u1ea1i sao?<\/strong><\/p>\n\n\n\n

C\u00e1p quang s\u1eed d\u1ee5ng c\u00e1c xung \u00e1nh s\u00e1ng do \u0111\u00e8n LED t\u1ea1o ra \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u d\u1ecdc theo c\u00e1c s\u1ee3i th\u1ee7y tinh ho\u1eb7c nh\u1ef1a \u0111\u1eb7c bi\u1ec7t<\/p>\n\n\n\n

M\u1eb7t kh\u00e1c, \u0111\u1ed3ng d\u1ef1a v\u00e0o vi\u1ec7c truy\u1ec1n d\u00f2ng \u0111i\u1ec7n d\u1ecdc theo chi\u1ec1u d\u00e0i c\u1ee7a n\u00f3 \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00f9ng m\u1ed9t ch\u1ee9c n\u0103ng<\/p>\n\n\n\n

d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n tr\u00ean c\u00e1p \u0111\u1ed3ng d\u01b0\u1edbi d\u1ea1ng xung \u0111i\u1ec7n, m\u00e1y d\u00f2 nh\u1eadn v\u00e0 gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u<\/p>\n\n\n\n

Tuy nhi\u00ean, t\u00edn hi\u1ec7u truy\u1ec1n \u0111i c\u00e0ng l\u00e2u th\u00ec c\u00e0ng suy gi\u1ea3m<\/p>\n\n\n\n

\u0110\u00e2y l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 suy gi\u1ea3m t\u00edn hi\u1ec7u v\u1edbi c\u00e1p quang<\/p>\n\n\n\n

M\u00e1y ph\u00e1t chuy\u1ec3n \u0111\u1ed5i th\u00f4ng tin \u0111i\u1ec7n t\u1eed th\u00e0nh c\u00e1c xung \u00e1nh s\u00e1ng<\/p>\n\n\n\n

C\u00e1c xung \u0111\u01b0\u1ee3c \u0111\u01b0a ra trong h\u1ec7 nh\u1ecb ph\u00e2n v\u1edbi m\u1ed9t xung t\u01b0\u01a1ng \u1ee9ng v\u1edbi 1 v\u00e0 kh\u00f4ng c\u00f3 xung n\u00e0o t\u01b0\u01a1ng \u1ee9ng v\u1edbi 0 khi c\u00e1c xung \u00e1nh s\u00e1ng n\u00e0y \u0111\u1ebfn \u0111\u1ea7u kia c\u1ee7a c\u00e1p.<\/p>\n\n\n\n

B\u1ed9 thu quang chuy\u1ec3n \u0111\u1ed5i c\u00e1c xung ho\u1eb7c thi\u1ebfu xung tr\u1edf l\u1ea1i th\u00e0nh th\u00f4ng tin \u0111i\u1ec7n t\u1eed<\/p>\n\n\n\n

cho \u0111\u1ebfn nay th\u00ec t\u1ed1t l\u1eafm !!!<\/strong><\/p>\n\n\n\n

M\u1eb7c d\u00f9 c\u00f3 th\u1ec3 quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u \u00fd ngh\u0129a c\u1ee7a nhanh h\u01a1n<\/p>\n\n\n\n

khi so s\u00e1nh hai th\u1ee9 khi th\u1ea3o lu\u1eadn v\u1ec1 hi\u1ec7u su\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a s\u1ee3i quang ho\u1eb7c d\u00e2y \u0111\u1ed3ng<\/p>\n\n\n\n

Thu\u1eadt ng\u1eef nhanh h\u01a1n c\u00f3 v\u1ebb h\u01a1i l\u1eeba d\u1ed1i<\/p>\n\n\n\n

C\u1ea3 c\u00e1p quang v\u00e0 d\u00e2y \u0111\u1ed3ng \u0111\u1ec1u truy\u1ec1n d\u1eef li\u1ec7u \u1edf t\u1ed1c \u0111\u1ed9 ch\u1eadm h\u01a1n t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng trong ch\u00e2n kh\u00f4ng<\/p>\n\n\n\n

m\u1eb7c d\u00f9 m\u1ed9t s\u1ed1 ph\u00e1t tri\u1ec3n g\u1ea7n \u0111\u00e2y trong s\u1ee3i quang \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 g\u1ea7n b\u1eb1ng t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng<\/p>\n\n\n\n

Tuy nhi\u00ean, v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, t\u1ed1c \u0111\u1ed9 c\u1ee7a d\u00e2y \u0111\u1ed3ng ho\u1eb7c c\u00e1p quang c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u kh\u1eafp tr\u00e1i \u0111\u1ea5t nhi\u1ec1u l\u1ea7n trong m\u1ed9t gi\u00e2y<\/p>\n\n\n\n

V\u1ec1 m\u1ecdi m\u1eb7t v\u00e0 m\u1ee5c \u0111\u00edch khi so s\u00e1nh t\u1ed1c \u0111\u1ed9 c\u1ee7a hai th\u1ee9 n\u00e0y, \u0111i\u1ec1u ch\u00fang ta th\u1ef1c s\u1ef1 \u0111ang n\u00f3i \u0111\u1ebfn l\u00e0 th\u1ee9 g\u1ecdi l\u00e0 th\u00f4ng l\u01b0\u1ee3ng ho\u1eb7c dung l\u01b0\u1ee3ng<\/p>\n\n\n\n

c\u00e1c thu\u1eadt ng\u1eef n\u00e0y li\u00ean quan \u0111\u1ebfn l\u01b0\u1ee3ng d\u1eef li\u1ec7u t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian<\/p>\n\n\n\n

c\u00e1p quang ch\u1eafc ch\u1eafn c\u00f3 th\u00f4ng l\u01b0\u1ee3ng cao h\u01a1n trong hai lo\u1ea1i<\/p>\n\n\n\n

\u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean nh\u1eefng kho\u1ea3ng c\u00e1ch xa<\/p>\n\n\n\n

m\u1ed9t m\u1ea1ng c\u1ee5c b\u1ed9 s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng d\u00e2y \u0111\u1ed3ng hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng c\u00f3 th\u1ec3 x\u1eed l\u00fd kho\u1ea3ng 3.000 cu\u1ed9c g\u1ecdi \u0111i\u1ec7n tho\u1ea1i c\u00f9ng m\u1ed9t l\u00fac<\/p>\n\n\n\n

c\u00e1p quang, m\u1eb7t kh\u00e1c<\/p>\n\n\n\n

th\u01b0\u1eddng c\u00f3 th\u1ec3 x\u1eed l\u00fd h\u01a1n 31.000 cu\u1ed9c g\u1ecdi c\u00f9ng m\u1ed9t l\u00fac<\/p>\n\n\n\n

s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y trong th\u00f4ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi d\u1ea3i t\u1ea7n s\u1ed1 m\u00e0 m\u1ed7i c\u00e1p c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd<\/p>\n\n\n\n

cao h\u01a1n<\/p>\n\n\n\n

d\u1ea3i t\u1ea7n s\u1ed1<\/p>\n\n\n\n

l\u1edbn h\u01a1n<\/p>\n\n\n\n

b\u0103ng th\u00f4ng<\/p>\n\n\n\n

v\u00e0 nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n qua c\u00e1p t\u1ea1i b\u1ea5t k\u1ef3 th\u1eddi \u0111i\u1ec3m n\u00e0o<\/p>\n\n\n\n

\u0111\u00e2y l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa hai lo\u1ea1i c\u00e1p: c\u00e1p quang c\u00f3 dung l\u01b0\u1ee3ng b\u0103ng th\u00f4ng l\u1edbn h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1p \u0111\u1ed3ng<\/p>\n\n\n\n

v\u00ec l\u00fd do n\u00e0y, c\u00e1p quang c\u00f3 th\u1ec3 truy\u1ec1n t\u1ea3i d\u1ea3i t\u1ea7n s\u1ed1 cao h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1p \u0111\u1ed3ng<\/p>\n\n\n\n

d\u00e2y \u0111\u1ed3ng c\u0169ng c\u00f3 v\u1ea5n \u0111\u1ec1 suy gi\u1ea3m ho\u1eb7c m\u1ea5t t\u00edn hi\u1ec7u \u1edf t\u1ea7n s\u1ed1 cao h\u01a1n khi so s\u00e1nh v\u1edbi c\u00e1p quang<\/p>\n\n\n\n

c\u00e1p quang c\u0169ng \u00edt b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi ti\u1ebfng \u1ed3n v\u00e0 nhi\u1ec5u \u0111i\u1ec7n t\u1eeb h\u01a1n d\u00e2y \u0111\u1ed3ng v\u00ec d\u00e2y \u0111\u1ed3ng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng kim lo\u1ea1i<\/p>\n\n\n\n

m\u1ed9t v\u1ea5n \u0111\u1ec1 kh\u00e1c m\u00e0 d\u00e2y \u0111\u1ed3ng g\u1eb7p ph\u1ea3i l\u00e0 n\u00f3 c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u d\u1ecdc theo chi\u1ec1u d\u00e0i c\u1ee7a n\u00f3<\/p>\n\n\n\n

tr\u00ean kho\u1ea3ng c\u00e1ch kho\u1ea3ng 200 d\u1eb7m, truy\u1ec1n d\u1eabn c\u00e1p quang s\u1ebd cho th\u1ea5y \u00edt ho\u1eb7c kh\u00f4ng c\u00f3 s\u1ef1 suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng trong khi truy\u1ec1n d\u1eabn qua d\u00e2y \u0111\u1ed3ng s\u1ebd cho th\u1ea5y s\u1ef1 suy gi\u1ea3m \u0111\u00e1ng k\u1ec3<\/p>\n\n\n\n

v\u00ec v\u1eady trong khi d\u00e2y \u0111\u1ed3ng v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00ec n\u00f3 r\u1ebb h\u01a1n c\u00e1p quang v\u00e0 n\u00f3 \u0111ang tr\u1edf n\u00ean nhanh h\u01a1n<\/p>\n\n\n\n

s\u1ee3i quang v\u1eabn \u0111\u1ee9ng \u0111\u1ea7u trong nhi\u1ec1u m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng c\u1ee7a b\u1ea1n\u00a0<\/p>\n\n\n\n

\"\u7b7e\u540d\"
<\/figcaption><\/figure>","protected":false},"excerpt":{"rendered":"

B\u1ea1n c\u00f3 bao gi\u1edd t\u1ef1 h\u1ecfi t\u1ea1i sao c\u00e1p quang l\u1ea1i nhanh h\u01a1n c\u00e1p \u0111\u1ed3ng kh\u00f4ng?
\nC\u00e2u tr\u1ea3 l\u1eddi h\u00f3a ra kh\u00e1 th\u00fa v\u1ecb<\/p>","protected":false},"author":1,"featured_media":4879,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","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":""}},"thumbnail_url":"","footnotes":""},"categories":[878,879],"tags":[],"class_list":["post-4875","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fiber-optic-cable","category-knowledege"],"_links":{"self":[{"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/posts\/4875","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"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=4875"}],"version-history":[{"count":0,"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/posts\/4875\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/media\/4879"}],"wp:attachment":[{"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/media?parent=4875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/categories?post=4875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hkcablemachine.com\/vi\/wp-json\/wp\/v2\/tags?post=4875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}