Ogologo nnyefe nke eriri otu ụdị: 64-channel nnyefe nke 40G Ethernet nwere ike ịdị ogologo dị ka 2,840 kilomita na otu eriri mode. The otu mode eriri na tumadi esịnede nke a isi, a cladding oyi akwa na mkpuchi Layer.The isi ka nke a ukwuu transperent material.The cladding nwere refractive index ubé nta karịa isi, n'ihi na ngwa anya waveguide mmetụta na-enye ohere kasị. nke oghere electromagnetic nke a ga-ejide n'ime isi. Ihe mkpuchi ahụ na-eme ihe iji chebe eriri ahụ site na mmiri mmiri na abrasion ígwè, ebe ọ na-amụba mgbanwe nke eriri ahụ. N'èzí mkpuchi mkpuchi ahụ, a na-agbakwunye jaket plastik na-ejikarị.
Kedu ihe dị iche n'etiti otu mode fiber na multimode fiber?
Ọdịiche dị na ndezigharị ntugharị: eriri otu ụdị na-eji profaịlụ ndeksi nzọụkwụ. Multimode eriri nwere ike iji nzọụkwụ index profaịlụ ma ọ bụ graded index profiles.Ya mere, quartz emep uta eri nwekwara ike n'ozuzu iji multimode step index fibers, multimode graded index fibers, na single mode step index fibers. Ụdị atọ.
Ihe dị iche na nnyefe mode: eriri otu-mode nwere ike ịnyefe otu mode maka ogologo ogologo oge na-arụ ọrụ, na multimode fiber nwere ike ibunye ọtụtụ modes.The propagation nke electromagnetic ebili mmiri na ngwa anya eriri bụ nke dielectric okirikiri waveguide.Mgbe ìhè bụ. Na-egosipụta kpamkpam na interface nke ọkara, a na-ejikọta ebili mmiri electromagnetic na ọkara, nke a na-akpọ eduzi ebili mmiri ma ọ bụ ụkpụrụ nduzi. Maka ebili mmiri eduzi na ogologo oge na-arụ ọrụ, enwere ọnọdụ ọnọdụ dị iche iche na-egbo ọnọdụ nke nlegharị anya zuru oke, nke a na-akpọ ụdị dị iche iche nke ebili mmiri na-eduzi. Kewara n'ime multimode eriri na otu mode eriri na nnyefe mode.
Ọdịiche dị n'ebe dị anya nke nnyefe: nnyefe nnyefe na bandwidth nnyefe nke eriri otu mode doro anya n'ihi eriri multimode. Ọ bụrụ na nnyefe dị anya karịa 5 km, a na-ebufe mgbaàmà data nnukwu-band ruo ogologo oge iji họrọ eriri otu mode. transmitter/nnata chọrọ ọkụ laser karịa otu ụdị. Ọ dị ọnụ ala karịa.
Ọdịiche dị n'ogologo ntụgharị nke nnyefe eriri: eriri otu-mode nwere obere isi dayameta na enwere ike ibunye ya n'otu ọnọdụ n'otu oge na-arụ ọrụ, yana bandwidth nnyefe na nnukwu nnyefe ikike. Multimode fiber bụ eriri anya nke nwere ike ibunye n'otu oge n'ọtụtụ ụdịdị na ogologo ogologo ọrụ enyere. Multimode eriri nwere ogbenye nnyefe arụmọrụ karịa otu mode eriri.