Fiber Optical bụ eriri e ji enyo ma ọ bụ plastik mee, eriri ahụ n'onwe ya na-esikwa ike nke ukwuu ma na-agbaji ngwa ngwa. Na ikpuchi obere eriri n'ime jaket rọba na-eme ka ọ gbadaa n'emebighị. Igwe eriri anya nke ejiri eriri anya kpuchie na jaket nchebe bụ eriri anya. Enwere ike ịgbagọ eriri anya n'ọchịchọ?
Ebe ọ bụ na eriri ahụ na-enwe mmetụta maka eriri, ịgbagọ ya nwere ike ime ka mgbama ngwa anya na-agbapụta site na eriri eriri, na ka nhuta na-arị elu, mgbama ngwa anya ga-agbapụta karịa. Ihulata nwekwara ike ịkpata microcracks nke nwere ike imebi eriri ahụ kpamkpam. Na-agbakwụnye na nsogbu ahụ, isi ihe microflex siri ike ịchọta ma chọọ ngwá ọrụ nyocha dị oke ọnụ, ma ọ dịkarịa ala, a ga-ehichapụ ma ọ bụ dochie akwa mmiri. Ịgbakọ eriri nwere ike ime ka ọ ghara ịbelata fiber. Ọnụ ọgụgụ nke attenuation n'ihi eriri na-ehulata na-abawanye ka radius nke curvature na-ebelata. Attenuation n'ihi na-ehulata bụ ukwuu na 1550 nm karịa na 1310 nm, na ọbụna ukwuu na 1625 nm. Ya mere, mgbe ị na-etinye fiber jumpers, karịsịa na gburugburu ebe obibi cabling dị elu, jumper ekwesịghị ikwe ka ọ gbadaa karịa radius na-anabata ya. Ya mere, gịnị bụ radius kwesịrị ekwesị nke curvature?
Radius eriri na-ehulata bụ akụkụ nke eriri nwere ike gbadaa n'enweghị nsogbu n'oge ọ bụla. Fiber na-ehulata radii dị iche iche maka eriri niile ma ọ bụ eriri mkpọ nwere ike ịdịgasị iche dabere n'ụdị eriri ma ọ bụ otu esi arụ ya. Opekempe na-ehulata radius dabere na dayameta na ụdị nke eriri anya, n'ozuzu a na-eji usoro a: radius kacha nta na-ehulata = dayameta mpụta nke eriri anya x multiple nke eriri anya.
Ọhụrụ ANSI/TIA/EIA-568B.3 ọkọlọtọ na-akọwapụta opekempe radius ụkpụrụ na kacha tensile ike maka 50/125 micron na 62.5/125 micron fiber optic cables. Opekempe ehulata radius ga-adabere na eriri eriri fiber optic akọwapụtara. N'ọnọdụ enweghị esemokwu, radius na-ehulata nke eriri anya kwesịrị ịbụ ihe na-erughị okpukpu iri karịa dayameta mpụta (OD) nke eriri anya. N'okpuru ntinye ihe nkedo, radius na-ehulata nke eriri anya bụ dayameta mpụta nke eriri anya 15 ugboro. Ụkpụrụ ụlọ ọrụ maka eriri eriri otu ụdịdị ọdịnala na-akọwapụtakarị radius mgbagọ kacha nta nke okpukpu iri n'obosara mpụta nke eriri jaket nwere ma ọ bụ 1.5 sentimita (38 mm), nke ọ bụla ka ukwuu. Fibre G652 a na-ejikarị nwere opekempe gbagọ radius nke 30mm.
G657, nke etinyere n'ime afọ ndị na-adịbeghị anya, nwere radius gbagọrọ agbagọ, gụnyere G657A1, G657A2 na G657B3 radius kacha nta nke G657A1 bụ 10mm, G657A2 fiber bụ 7.5mm, na fiber G657B3 bụ 5mm. Ụdị eriri a dabere na eriri G652D, nke na-eme ka njirimara attenuation na-ehulata na njirimara geometric nke eriri ahụ, si otú ahụ meziwanye njirimara njikọ nke eriri ahụ, nke a makwaara dị ka eriri attenuation na-enweghị mmetụta. A na-ejikarị na FTTx, FTTH, kwesịrị ekwesị maka ojiji na obere oghere ime ụlọ ma ọ bụ nkuku.
Abụọ eriri eriri na ụba attenuation nwere ike inwe mmetụta dị ịrịba ama na ntụkwasị obi netwọk ogologo oge, ụgwọ ọrụ netwọk, na ikike iji nọgide na-eto ma na-eto ndị ahịa. Ya mere, ọ dị anyị mkpa ịmara nke ọma radius na-ehulata nke ọma nke eriri ahụ iji mee ka eriri ma ọ bụ ụdọ mara mma na ọnọdụ ọrụ dị mma.
Oge nzipu: Nov-11-2022
