{"id":14587,"date":"2016-01-21T00:00:00","date_gmt":"2016-01-20T23:00:00","guid":{"rendered":"https:\/\/www.sylex.sk\/24-vlaknove-riesenie-mpo-mtp-stale-atraktivny-pristup\/"},"modified":"2024-06-05T17:56:56","modified_gmt":"2024-06-05T16:56:56","slug":"24-vlaknove-riesenie-mpo-mtp-stale-atraktivny-pristup","status":"publish","type":"post","link":"https:\/\/www.sylex.sk\/sk\/24-vlaknove-riesenie-mpo-mtp-stale-atraktivny-pristup\/","title":{"rendered":"24-vl\u00e1knov\u00e9 rie\u0161enie MPO\/MTP – st\u00e1le atrakt\u00edvny pr\u00edstup"},"content":{"rendered":"\t\t
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\"\"Viacvl\u00e1knov\u00e9 pripojenie je jedn\u00fdm z najhor\u00facej\u0161\u00edch bodov v oblasti optick\u00e9ho pripojenia. Mnoh\u00e9 biele knihy, webov\u00e9 semin\u00e1re a blogy sa v\u00fdrazne prikl\u00e1\u0148aj\u00fa k pr\u00edstupu zalo\u017eenom na 12 vl\u00e1knach.<\/p>\n

\u013dahko mo\u017eno prehliadnu\u0165, \u017ee s\u00fa k dispoz\u00edcii aj in\u00e9 viacvl\u00e1knov\u00e9 rie\u0161enia. Ako pr\u00edklad l\u00eddra v tomto odvetv\u00ed m\u00f4\u017eeme uvies\u0165 spolo\u010dnos\u0165 Cisco Systems, ktor\u00e1 sa rozhodla vytvori\u0165 nieko\u013eko nov\u00fdch produktov zalo\u017een\u00fdch na 24-vl\u00e1knov\u00fdch konektoroch MPO. V tomto \u010dl\u00e1nku sa pozrieme na prepojenie, ktor\u00e9 tvor\u00ed z\u00e1klad tak\u00e9hoto syst\u00e9mu.<\/p>\n

V\u00fdvoj viacvl\u00e1knov\u00e9ho pr\u00edstupu<\/b><\/p>\n

V technologick\u00fdch oblastiach, a najm\u00e4 v optick\u00fdch vl\u00e1knach, vid\u00edme v\u00fdrazn\u00fd v\u00fdvoj, ktor\u00fd vyvol\u00e1va st\u00e1le nov\u00e9 a nov\u00e9 ot\u00e1zky. Jedn\u00fdm z nich je: „Ko\u013eko vl\u00e1kien naozaj potrebujeme na paraleln\u00e9 pripojenie?“<\/b> Pri poh\u013eade sp\u00e4\u0165 si spom\u00edname, \u017ee na samom za\u010diatku na\u0161ej cesty miniaturiz\u00e1cie a aplik\u00e1ci\u00ed s vysok\u00fdm po\u010dtom vl\u00e1kien bolo k dispoz\u00edcii rie\u0161enie len s dvoma vl\u00e1knami v jednom puzdre konektora – konektor MTRJ. I\u0161lo o prv\u00fd pr\u00edstup ku kombin\u00e1cii viacer\u00fdch vl\u00e1kien v jednej obj\u00edmke, ktor\u00fd nahradil konven\u010dn\u00e9 rie\u0161enia keramick\u00fdch obj\u00edmok na b\u00e1ze konektorov SC a LC.<\/p>

S vy\u0161\u0161\u00edmi po\u017eiadavkami na \u0161\u00edrku p\u00e1sma a r\u00fdchlos\u0165 sa na trhu objavili aplik\u00e1cie s viac ako 1G a rie\u0161enia prepojenia si vy\u017eadovali v\u00e4\u010d\u0161iu flexibilitu na jednej strane a priestorov\u00fa efekt\u00edvnos\u0165 na strane druhej. To bol sign\u00e1l, aby na sc\u00e9nu vst\u00fapil konektor MPO. Jeho prv\u00e9 aplik\u00e1cie boli zalo\u017een\u00e9 na 8-vl\u00e1knovom type, ktor\u00fd bol ve\u013emi r\u00fdchlo nasledovan\u00fd 12-vl\u00e1knov\u00fdm typom, ktor\u00fd sa stal \u0161tandardom na mnoho rokov. Na za\u010diatku boli vysiela\u010de a prij\u00edma\u010de akt\u00edvnych zariaden\u00ed zalo\u017een\u00e9 najm\u00e4 na module SFP. Pripojenie MPO sa pou\u017eilo ako chrbticov\u00e9 rie\u0161enie a na prepojenie Plug-and-Play. S nov\u00fdmi zv\u00fd\u0161eniami r\u00fdchlosti z 10G na 40G a dokonca na 100G sa po\u017eadovalo skuto\u010dn\u00e9 paraleln\u00e9 pripojenie. Mnoh\u00ed ve\u013ek\u00ed hr\u00e1\u010di za\u010dali vytv\u00e1ra\u0165 MSA (Multi-Source Agreements), kde sa sna\u017eili definova\u0165 „najlep\u0161\u00ed pr\u00edstup“, ako pokry\u0165 tento nov\u00fd dopyt na trhu. V pr\u00edpade aplik\u00e1cie 40G bola pomerne r\u00fdchlo definovan\u00e1 ako rozhranie MPO s 12 vl\u00e1knami: 4 vysielacie (4x10G), 4 prij\u00edmacie (4x10G) a 4 slep\u00e9 vl\u00e1kna uprostred. Moduly QSFP si na\u0161li cestu do akt\u00edvnych zariaden\u00ed 40G. \u010eal\u0161\u00edm logick\u00fdm krokom bolo 100G. Prv\u00fd pr\u00edstup spo\u010d\u00edval v pou\u017eit\u00ed dvoch 12-vl\u00e1knov\u00fdch konektorov MPO – jedn\u00e9ho konektora v\u00fdlu\u010dne na vysielanie sign\u00e1lu a druh\u00e9ho ur\u010den\u00e9ho na pr\u00edjem. Ka\u017ed\u00fd kan\u00e1l pracuje s r\u00fdchlos\u0165ou 10G, \u010do znamen\u00e1 10 x 10 = 100G prenos. V\u00fdrobcovia konektorov to prijali ako nov\u00fa v\u00fdzvu a predstavili konektor MPO zalo\u017een\u00fd na 24-vl\u00e1knovej koncovke, ktor\u00e1 v tom istom konektore umo\u017e\u0148uje umiestnenie oboch pruhov Tx a Rx. Bol to ve\u013ek\u00fd skok vpred, pokia\u013e ide o v\u00fdzvu t\u00fdkaj\u00facu sa efekt\u00edvnosti vyu\u017eitia priestoru. Zavedenie novej 24-vl\u00e1knovej koncovky\/konektora by sp\u00f4sobilo rozkol vo svete optick\u00fdch vl\u00e1kien a rozdelilo by ho na dve skupiny. Jedna skupina sa orientovala najm\u00e4 na rie\u0161enia a aplik\u00e1cie s 12 vl\u00e1knami, druh\u00e1 sa rozhodne priklonila k pr\u00edstupu s 24 vl\u00e1knami. \u010clenovia oboch t\u00e1borov maj\u00fa svoje vlastn\u00e9 d\u00f4vody a argumenty, pre\u010do sa dr\u017eia svojho \u0161pecifick\u00e9ho syst\u00e9mu.<\/span>
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\u010clovek m\u00f4\u017ee by\u0165 z tohto „boja o vl\u00e1kna“ \u013eahko zm\u00e4ten\u00fd. Aby som to v\u0161ak uviedol na prav\u00fa mieru, hlavn\u00fdm faktorom je op\u00e4\u0165 pou\u017eit\u00e9 akt\u00edvne zariadenie. V pr\u00edpade rie\u0161en\u00ed 100G s\u00fa hlavn\u00fdmi s\u00fa\u010dasn\u00fdmi modulmi CXP a CFP, pri\u010dom v pr\u00edpade viacvl\u00e1knov\u00e9ho rozhrania je po\u010det vl\u00e1kien nastaven\u00fd na 24. Na priame prepojenie dvoch tak\u00fdchto akt\u00edvnych \u010dast\u00ed je potrebn\u00e9 pou\u017ei\u0165 kme\u0148ov\u00fd alebo prepojovac\u00ed k\u00e1bel na b\u00e1ze 24-vl\u00e1knov\u00e9ho MPO. V\u00e4\u010d\u0161ina aplik\u00e1ci\u00ed v d\u00e1tov\u00fdch centr\u00e1ch je orientovan\u00e1 na viacero re\u017eimov. Treba v\u0161ak spomen\u00fa\u0165, \u017ee niektor\u00e9 syst\u00e9my s vysokou pridanou hodnotou alebo \u0161peci\u00e1lne \u0161pecializovan\u00e9 syst\u00e9my s\u00fa zalo\u017een\u00e9 na jednovidovej verzii. Ako pr\u00edklad m\u00f4\u017eeme uvies\u0165 v\u00fdvoj smerova\u010dov radu ASR 9000 vyvinut\u00fdch spolo\u010dnos\u0165ou Cisco s modul\u00e1rnymi linkov\u00fdmi kartami Ethernet vybaven\u00fdmi rozhran\u00edm CPAK. Po prvej gener\u00e1cii NPU (Network Processor Unit) s n\u00e1zvom Trident Class 120G nasledovala trieda Typhoon Class 360G a v s\u00fa\u010dasnosti ju nahr\u00e1dza NPU Tomahawk Class 800G, ktor\u00e1 je flexibiln\u00e1 v r\u00f4znych linkov\u00fdch kart\u00e1ch s podporou 10G, 40G a 100G. (pozri obr. 1).<\/span>
<\/p>

Pri verzi\u00e1ch s dlh\u00fdm dosahom (ako napr\u00edklad CPAK-10x10G-LR) sa pou\u017e\u00edva jednovidov\u00e1 alternat\u00edva, \u010do znamen\u00e1, \u017ee aj rozhranie mus\u00ed by\u0165 jednovidov\u00e9 s 24 vl\u00e1knami.<\/span>
<\/p>\n

\"\"<\/p>\n

V\u00fdzvy, o\u010dak\u00e1vania a obmedzenia<\/b><\/p>\n

Samozrejme, pre v\u00fdrobcov k\u00e1blov\u00fdch zv\u00e4zkov je to nov\u00e1 v\u00fdzva – s 24-vl\u00e1knovou koncovkou (najm\u00e4 s jednovl\u00e1knovou verziou) je spojen\u00e1 ove\u013ea zlo\u017eitej\u0161ia manipul\u00e1cia, ukon\u010dovanie a merania ako s jej 12-vl\u00e1knov\u00fdm n\u00e1protivkom.<\/p>\n

Spolo\u010dnos\u0165 Sylex si t\u00fato v\u00fdzvu stanovila ako k\u013e\u00fa\u010dov\u00fa prioritu hne\u010f na za\u010diatku \u00e9ry 24 vl\u00e1kien. V\u010faka n\u00e1\u0161mu siln\u00e9mu zameraniu na technol\u00f3giu MT m\u00f4\u017eeme v s\u00fa\u010dasnosti pon\u00faknu\u0165 najkvalitnej\u0161ie 24-vl\u00e1knov\u00e9 prepojovacie k\u00e1ble, kme\u0148ov\u00e9 k\u00e1ble a zostavy fanout, ktor\u00e9 sa v s\u00fa\u010dasnosti vyr\u00e1baj\u00fa – v jednom\u00f3dovej aj viacm\u00f3dovej verzii. Tie mo\u017eno pou\u017ei\u0165 pri realiz\u00e1cii rozbo\u010dovac\u00edch k\u00e1blov alebo rozbo\u010dovac\u00edch patch panelov (pozri obr. 2 a obr. 3).<\/p>\n

Pou\u017eit\u00e9 materi\u00e1ly zalo\u017een\u00e9 na vl\u00e1knach Corning a kovaniach USConec MTP (ktor\u00e9 vyu\u017e\u00edvaj\u00fa prisp\u00f4soben\u00e9 a vyladen\u00e9 patentovan\u00e9 procesy le\u0161tenia) poskytuj\u00fa vynikaj\u00face v\u00fdsledky.<\/p>\n

\"\" \"\"<\/p>\n

R\u00f4zni koncov\u00ed pou\u017e\u00edvatelia, in\u0161talat\u00e9ri, mana\u017e\u00e9ri d\u00e1tov\u00fdch centier a syst\u00e9mov\u00ed integr\u00e1tori h\u013eadaj\u00fa r\u00f4zne pridan\u00e9 hodnoty zak\u00fapen\u00fdch produktov, ale v kone\u010dnom d\u00f4sledku je jedn\u00fdm z hlavn\u00fdch faktorov rozpo\u010det na straty, ktor\u00fd obmedzuje prev\u00e1dzku cel\u00e9ho syst\u00e9mu. Ofici\u00e1lne deklarovan\u00e9 limity pre viacvl\u00e1knov\u00e9 ferule 24F s\u00fa na \u00farovni 0,6 dB na sp\u00e1rovan\u00fd p\u00e1r konektorov pre viacmodov\u00e9 a 0,75 dB pre jednovidov\u00e9. Zauj\u00edmavej\u0161ia je samozrejme takzvan\u00e1 verzia s n\u00edzkymi stratami, kde je pre oba typy vl\u00e1kien stanoven\u00e1 hrani\u010dn\u00e1 hodnota 0,35 dB v ide\u00e1lnom stave a 0,75 dB v najhor\u0161om pr\u00edpade.  Tu je potrebn\u00e9 poznamena\u0165, \u017ee v pr\u00edpade 24-vl\u00e1knov\u00fdch MT ferul\u00ed je vlo\u017en\u00fd \u00fatlm ve\u013emi citliv\u00fd na dosiahnut\u00e9 fyzick\u00e9 kontakty medzi dvoma ferulami. Pr\u00edtla\u010dn\u00e1 sila pou\u017eit\u00e1 medzi sp\u00e1rovan\u00fdm p\u00e1rom jednom\u00f3dov\u00fdch konektorov je obmedzen\u00e1 v\u010faka \u0161ikm\u00e9mu le\u0161teniu na ferule. Z tohto d\u00f4vodu mo\u017eno uveden\u00fa \u00farove\u0148 vlo\u017en\u00e9ho \u00fatlmu pre jednovidov\u00e9 feruly 24F dosiahnu\u0165 len v ide\u00e1lnych situ\u00e1ci\u00e1ch, \u010do v re\u00e1lnom \u017eivote nie je v\u017edy pravda.<\/p>\n

Spolo\u010dnos\u0165 Sylex tento bod komplexne vyhodnotila a vyladila v\u00fdrobn\u00fd proces na tak\u00fa \u00farove\u0148, aby maxim\u00e1lna \u00farove\u0148 vlo\u017en\u00fdch str\u00e1t pre jednovidov\u00e9 n\u00edzko\u00fabytkov\u00e9 ferule v \u017eiadnom pr\u00edpade neprekro\u010dila 0,5 dB. Zo v\u0161etk\u00fdch hodn\u00f4t je len 6 percent, ktor\u00e9 s\u00fa vy\u0161\u0161ie ako 0,35 dB, ale st\u00e1le ni\u017e\u0161ie ako 0,5 dB. Tu mus\u00edme zd\u00f4razni\u0165, \u017ee tieto hodnoty sa nemeraj\u00fa v porovnan\u00ed s dokonal\u00fdm \u0161tartovac\u00edm konektorom, ako to zvy\u010dajne robia v\u00fdrobcovia zv\u00e4zkov. Merania sa uskuto\u010dnili v re\u00e1lnych podmienkach, ke\u010f obidva sp\u00e1jan\u00e9 konektory poch\u00e1dzaj\u00fa z rovnakej v\u00fdrobnej linky a pre\u0161li rovnak\u00fdmi krit\u00e9riami kvality. <\/b><\/p>\n

Na grafe (obr. 4) je vidite\u013en\u00e9 skuto\u010dn\u00e9 rozlo\u017eenie nameran\u00fdch hodn\u00f4t, \u010do dokazuje, \u017ee rozpo\u010det v\u00fdkonu pre aplik\u00e1cie zalo\u017een\u00e9 na SM je ur\u010dite mo\u017en\u00e9 dodr\u017ea\u0165. Sme presved\u010den\u00ed, \u017ee v\u010faka tak\u00fdmto vynikaj\u00facim parametrom najzlo\u017eitej\u0161\u00edch viacvl\u00e1knov\u00fdch konektorov m\u00f4\u017ee spolo\u010dnos\u0165 Sylex pon\u00faknu\u0165 v\u0161etk\u00fdm na\u0161im partnerom zv\u00e4zky s najvy\u0161\u0161\u00edm v\u00fdkonom, ktor\u00e9 dok\u00e1\u017eu pripoji\u0165 najnov\u0161ie modern\u00e9 prep\u00edna\u010de a smerova\u010de in\u0161talovan\u00e9 v d\u00e1tov\u00fdch centr\u00e1ch.<\/p>\n

\"\"<\/p>\n

Eduard Koza – mana\u017e\u00e9r v\u00fdskumu a v\u00fdvoja<\/b> – Kontakt<\/a><\/p>\n

Eduard Koza je mana\u017e\u00e9r v\u00fdskumu a v\u00fdvoja v spolo\u010dnosti Sylex. Za\u010d\u00ednal ako projektov\u00fd in\u017einier pre vysoko v\u00fdkonn\u00e9 meden\u00e9 zv\u00e4zky. V roku 2000 roz\u0161\u00edril svoje aktivity o pas\u00edvne produkty na prepojenie optick\u00fdch vl\u00e1kien a syst\u00e9my na sn\u00edmanie optick\u00fdch vl\u00e1kien. Na za\u010diatku tohto obdobia viedol najm\u00e4 viacer\u00e9 technologick\u00e9 transfery a zastre\u0161oval implement\u00e1ciu nov\u00fdch produktov do portf\u00f3lia spolo\u010dnosti.<\/p>\n

Nesk\u00f4r v spolo\u010dnosti zast\u00e1val funkciu mana\u017e\u00e9ra pre in\u017einierstvo a viedol technologick\u00e9 a in\u017einierske \u010dinnosti zodpovedn\u00e9 za prenos n\u00e1padov z\u00e1kazn\u00edkov do fin\u00e1lnych produktov. Jeho s\u00fa\u010dasn\u00e1 poz\u00edcia zah\u0155\u0148a riadenie novozaveden\u00fdch technick\u00fdch rie\u0161en\u00ed, pri\u010dom vyu\u017e\u00edva svoje poradensk\u00e9 schopnosti t\u00fdkaj\u00face sa prisp\u00f4soben\u00fdch produktov optick\u00fdch prepojen\u00ed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Viacvl\u00e1knov\u00e9 pripojenie je jedn\u00fdm z najhor\u00facej\u0161\u00edch bodov v oblasti optick\u00e9ho pripojenia. Mnoh\u00e9 biele knihy, webov\u00e9 semin\u00e1re a blogy sa v\u00fdrazne prikl\u00e1\u0148aj\u00fa k pr\u00edstupu zalo\u017eenom na 12 vl\u00e1knach. \u013dahko mo\u017eno prehliadnu\u0165, \u017ee s\u00fa k dispoz\u00edcii aj in\u00e9 viacvl\u00e1knov\u00e9 rie\u0161enia. Ako pr\u00edklad l\u00eddra v tomto odvetv\u00ed m\u00f4\u017eeme uvies\u0165 spolo\u010dnos\u0165 Cisco Systems, ktor\u00e1 sa rozhodla vytvori\u0165 nieko\u013eko nov\u00fdch produktov zalo\u017een\u00fdch na 24-vl\u00e1knov\u00fdch konektoroch MPO. V tomto \u010dl\u00e1nku sa pozrieme na prepojenie, ktor\u00e9 tvor\u00ed z\u00e1klad tak\u00e9hoto syst\u00e9mu.<\/p>\n","protected":false},"author":3,"featured_media":11917,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[543,375],"tags":[544],"class_list":["post-14587","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-sk","category-uncategorized-sk","tag-blog-sk"],"acf":[],"yoast_head":"\n24-vl\u00e1knov\u00e9 rie\u0161enie MPO\/MTP - st\u00e1le atrakt\u00edvny pr\u00edstup - Sylex<\/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.sylex.sk\/sk\/24-vlaknove-riesenie-mpo-mtp-stale-atraktivny-pristup\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"24-vl\u00e1knov\u00e9 rie\u0161enie MPO\/MTP - st\u00e1le atrakt\u00edvny pr\u00edstup - Sylex\" \/>\n<meta property=\"og:description\" content=\"Viacvl\u00e1knov\u00e9 pripojenie je jedn\u00fdm z najhor\u00facej\u0161\u00edch bodov v oblasti optick\u00e9ho pripojenia. Mnoh\u00e9 biele knihy, webov\u00e9 semin\u00e1re a blogy sa v\u00fdrazne prikl\u00e1\u0148aj\u00fa k pr\u00edstupu zalo\u017eenom na 12 vl\u00e1knach. \u013dahko mo\u017eno prehliadnu\u0165, \u017ee s\u00fa k dispoz\u00edcii aj in\u00e9 viacvl\u00e1knov\u00e9 rie\u0161enia. Ako pr\u00edklad l\u00eddra v tomto odvetv\u00ed m\u00f4\u017eeme uvies\u0165 spolo\u010dnos\u0165 Cisco Systems, ktor\u00e1 sa rozhodla vytvori\u0165 nieko\u013eko nov\u00fdch produktov zalo\u017een\u00fdch na 24-vl\u00e1knov\u00fdch konektoroch MPO. 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