{"id":549,"date":"2016-12-20T14:12:13","date_gmt":"2016-12-20T14:12:13","guid":{"rendered":"http:\/\/vyrobcikabelu.cz\/to-nejzakladnejsi-o-optickem-kabelu\/"},"modified":"2018-11-21T19:47:47","modified_gmt":"2018-11-21T19:47:47","slug":"to-nejzakladnejsi-o-optickem-kabelu","status":"publish","type":"post","link":"https:\/\/www.vyrobcikabelu.cz\/sk\/to-nejzakladnejsi-o-optickem-kabelu\/","title":{"rendered":"To nejz\u00e1kladn\u011bj\u0161\u00ed o optick\u00e9m kabelu"},"content":{"rendered":"<p>Optick\u00e9 kabely jsou, dle m\u00e9ho n\u00e1zoru, technologickou \u0161pi\u010dkou mezi kabely pou\u017e\u00edvan\u00fdmi pro p\u0159enos dat nebo informac\u00ed a to nejen jejich samotnou v\u00fdrobou, ale i pou\u017e\u00edvanou provozn\u00ed technologi\u00ed. Pokus\u00edm se v n\u011bkolika odstavc\u00edch tyto kabely vlastn\u00ed formou p\u0159edstavit.<br \/>\n Z\u00e1kladn\u00edm prvkem optick\u00e9ho kabelu je optick\u00e9 vl\u00e1kno, co\u017e je vlastn\u011b sklen\u011bn\u00fd v\u00e1le\u010dkov\u00fd vlnovod, ve kter\u00e9m se \u0161\u00ed\u0159\u00ed elektromagnetick\u00e9 vlny, rozum\u011bno sign\u00e1l (zpravidla sv\u011btlo \u010di infra\u010derven\u00e9 z\u00e1\u0159en\u00ed) s co nejni\u017e\u0161\u00ed ztr\u00e1tou. Optick\u00e1 = sklen\u011bn\u00e1 vl\u00e1kna jsou vyr\u00e1b\u011bn\u00e1 z k\u0159emene, ale lze pou\u017e\u00edt i jin\u00e9 matri\u00e1ly, nap\u0159\u00edklad n\u011bkter\u00e9 plasty. Samotn\u00e1 optick\u00e1 vl\u00e1kna se vyr\u00e1b\u00ed ta\u017een\u00edm z homogenn\u00edch sklen\u011bn\u00fdch v\u00e1lc\u016f, jejich vnit\u0159n\u00ed \u010d\u00e1st se naz\u00fdv\u00e1 j\u00e1dro, okolo j\u00e1dra je pl\u00e1\u0161\u0165 a prim\u00e1rn\u00ed (t\u011bsn\u00e1) ochrana. Pr\u016fm\u011br takov\u00e9ho optick\u00e9ho vl\u00e1kna je 0,250mm a je velmi choulostiv\u00e9 na jak\u00e9koli mechanick\u00e9 nam\u00e1h\u00e1n\u00ed a ohyby. Tato vl\u00e1kna jsou o definovan\u00e9m po\u010dtu umis\u0165ovan\u00e1 do takzvan\u00fdch trubi\u010dek \u2013 \u201eBuffer Tube\u201c, kter\u00e9 tvo\u0159\u00ed dal\u0161\u00ed (tzv. sekund\u00e1rn\u00ed) ochranu. Jsou-li tyto trubi\u010dky, z d\u016fvodu mechanick\u00e9 ochrany a ochrany proti p\u016fsoben\u00ed vn\u011bj\u0161\u00edch vliv\u016f, napln\u011bn\u00e9 gelem, \u0159\u00edk\u00e1 se jim gelov\u00e9 nebo n\u011bkdy mokr\u00e9 optick\u00e9 kabely. V opa\u010dn\u00e9m p\u0159\u00edpad\u011b se ozna\u010duj\u00ed jako such\u00e9. Tyto trubi\u010dky jsou pot\u00e9 sdru\u017eovan\u00e9 do nep\u0159ebern\u00e9 \u0161k\u00e1ly kabelov\u00fdch konstrukc\u00ed optick\u00fdch kabel\u016f pro vnit\u0159n\u00ed \u010di venkovn\u00ed ulo\u017een\u00ed. Optick\u00e9 kabely lze, za p\u0159edpokladu pou\u017eit\u00ed speci\u00e1ln\u00edch materi\u00e1l\u016f v jejich konstrukci, po str\u00e1nce mechanick\u00fdch \u010di po\u017e\u00e1rn\u00edch vlastnost\u00ed srovn\u00e1vat s kabely, kter\u00e9 maj\u00ed metalick\u00e1 j\u00e1dra.<\/p>\n<p>Poj\u010fme si n\u011bco \u0159\u00edci o z\u00e1kladn\u00edch typech vl\u00e1ken. Nejpou\u017e\u00edvan\u011bj\u0161\u00edmi typy jsou vl\u00e1kna ozna\u010dovan\u00e1 zkratkami SM a MM. Zkratka SM \u2013 single mode (jednovidov\u00e9 vl\u00e1kno) ozna\u010duje druh optick\u00e9ho vl\u00e1kna, kter\u00e9 vede pouze jeden paprsek a je pou\u017e\u00edv\u00e1no pro p\u0159enos dat na v\u011bt\u0161\u00ed vzd\u00e1lenost (mezi m\u011bsty, st\u00e1ty, kontinenty) a pro vysokorychlostn\u00ed p\u0159enosy. Zat\u00edmco SM vl\u00e1kno m\u00e1 j\u00e1dro o pr\u016fm\u011bru 9\u03bcm (\u03bcm=mikrometr\u016f), u MM vl\u00e1kna m\u00e1 j\u00e1dro pr\u016fm\u011br 50 nebo 62,5 \u03bcm. Zkratka MM \u2013 multi mode (mnohovidov\u00e9 vl\u00e1kno) ozna\u010duje druh optick\u00e9ho vl\u00e1kna vedouc\u00ed v\u00edce paprsk\u016f, kter\u00e9 se ve vl\u00e1kn\u011b \u0161\u00ed\u0159\u00ed odrazem a je nej\u010dast\u011bji pou\u017e\u00edv\u00e1no pro komunikaci na kr\u00e1tk\u00e9 vzd\u00e1lenosti, jako nap\u0159\u00edklad v budov\u00e1ch nebo are\u00e1lech. U tohoto typu vl\u00e1ken se rychlost p\u0159enosu pohybuje v rozmez\u00ed 10 Mbit\/s a\u017e 10 Gbit\/s, kdy je pot\u0159eba zohlednit vzd\u00e1lenost p\u0159enosu. P\u0159enosov\u00e1 rychlost u SM vl\u00e1ken je v\u011bt\u0161\u00ed a na\u0161la uplatn\u011bn\u00ed p\u0159edev\u0161\u00edm v telekomunikac\u00edch a p\u0159i vysokorychlostn\u00edch p\u0159enosech v Internetu.<\/p>\n<p>Optick\u00e1 vl\u00e1kna se mohou i spojovat a to jak z d\u016fvodu jejich prodlou\u017een\u00ed, odbo\u010den\u00ed, tak p\u0159edev\u0161\u00edm z d\u016fvodu jejich zakon\u010den\u00ed pro praktick\u00e9 pou\u017eit\u00ed. V praxi se pou\u017e\u00edv\u00e1 rozeb\u00edrateln\u00fdch, \u010d\u00e1ste\u010dn\u011b rozeb\u00edrateln\u00fdch a nerozeb\u00edrateln\u00fdch spoj\u016f. Nej\u010dast\u011bj\u0161\u00ed pou\u017e\u00edvan\u00e9 metody spojov\u00e1n\u00ed jsou, metoda sva\u0159ov\u00e1n\u00ed laserov\u00fdm obloukem a metoda mechanick\u00e9ho spojov\u00e1n\u00ed pomoc\u00ed konektor\u016f \u010di mechanick\u00fdch spojek. P\u0159i pr\u00e1ci s optick\u00fdmi vl\u00e1kny je v\u017edy zapot\u0159eb\u00ed dodr\u017eovat \u010distotu, p\u0159esnost p\u0159\u00edpravy (zalomen\u00ed) spojovan\u00fdch vl\u00e1ken a pou\u017e\u00edvat za\u0159\u00edzen\u00ed a n\u00e1stroje, kter\u00e9 jsou pro tuto \u010dinnost p\u0159edur\u010den\u00e9.<\/p>\n<p>Na \u00favod tohoto \u010dl\u00e1nku jsem zm\u00ednil, \u017ee optick\u00e9 kabely jsou technologicky t\u00edm nejlep\u0161\u00edm, co lze pou\u017e\u00edt pro p\u0159enos dat odn\u011bkud &#8211; n\u011bkam. Z toho tak\u00e9 vypl\u00fdv\u00e1, \u017ee je zapot\u0159eb\u00ed po\u010d\u00edtat s vy\u0161\u0161\u00edmi n\u00e1klady na n\u00e1kup jak samotn\u00fdch optick\u00fdch kabel\u016f, tak ostatn\u00edch sofistikovan\u00fdch za\u0159\u00edzen\u00ed pot\u0159ebn\u00fdch pro jejich mont\u00e1\u017e, m\u011b\u0159en\u00ed a provoz. Za zv\u00fd\u0161en\u00e9 n\u00e1klady se v\u00e1m optick\u00e9 kabely mnohon\u00e1sobn\u011b odvd\u011b\u010d\u00ed, proto\u017ee mno\u017estv\u00ed, kvalita a rychlost p\u0159en\u00e1\u0161en\u00e9ho sign\u00e1lu v optick\u00fdch vl\u00e1knech je nesrovnateln\u011b v\u011bt\u0161\u00ed ne\u017e u kabel\u016f s klasick\u00fdmi m\u011bd\u011bn\u00fdmi j\u00e1dry. A na z\u00e1v\u011br je\u0161t\u011b jedna nezanedbateln\u00e1 vlastnost. Optick\u00e1 vl\u00e1kna st\u00e1rnou daleko, daleko pomaleji ne\u017e klasick\u00e1 metalick\u00e1 j\u00e1dra kabel\u016f ur\u010den\u00fdch pro p\u0159enos dat, tud\u00ed\u017e kvalita p\u0159en\u00e1\u0161en\u00e9ho sign\u00e1lu s lety pou\u017e\u00edv\u00e1n\u00ed kles\u00e1 velmi pomalu.<\/p>\n<p><strong>Radek Vrzal<\/strong><br \/>\n Kabelovna KABEX a.s.<br \/>\n Vedouc\u00ed laborato\u0159\u00ed a zku\u0161eben<br \/>\n Revizn\u00ed technik elektro<br \/>\n \u010clen TT AVK \u010cR a SR<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Optick\u00e9 kabely jsou, dle m\u00e9ho n\u00e1zoru, technologickou \u0161pi\u010dkou mezi kabely pou\u017e\u00edvan\u00fdmi pro p\u0159enos dat nebo informac\u00ed a to nejen jejich samotnou v\u00fdrobou, ale i pou\u017e\u00edvanou provozn\u00ed technologi\u00ed. Pokus\u00edm se v n\u011bkolika odstavc\u00edch tyto kabely vlastn\u00ed formou p\u0159edstavit. Z\u00e1kladn\u00edm prvkem optick\u00e9ho &hellip; <a href=\"https:\/\/www.vyrobcikabelu.cz\/sk\/to-nejzakladnejsi-o-optickem-kabelu\/\">Pokra\u010dova\u0165<\/a><\/p>\n","protected":false},"author":11,"featured_media":755,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>To nejz\u00e1kladn\u011bj\u0161\u00ed o optick\u00e9m kabelu - AVK<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vyrobcikabelu.cz\/sk\/to-nejzakladnejsi-o-optickem-kabelu\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"To nejz\u00e1kladn\u011bj\u0161\u00ed o optick\u00e9m kabelu - AVK\" \/>\n<meta property=\"og:description\" content=\"Optick\u00e9 kabely jsou, dle m\u00e9ho n\u00e1zoru, technologickou \u0161pi\u010dkou mezi kabely pou\u017e\u00edvan\u00fdmi pro p\u0159enos dat nebo informac\u00ed a to nejen jejich samotnou v\u00fdrobou, ale i pou\u017e\u00edvanou provozn\u00ed technologi\u00ed. 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