Ndị otu mode eriri na multimode n'adịghị

Mgbe ọ na-abịa data nnyefe si otu n'ime obodo ebe ọzọ, na-amụba kama omenala ọla kọpa waya na ndị ahịa ngo kpọrọ edo ngwa anya USB. Ihe a na-akpali akpali technology anyị nwere taa, anyị ga-ekwu okwu.

Eriri-optic nkwurịta okwu akara (FOL) rụọ ọrụ na ụkpụrụ nke nnyefe nke ìhè ebili mmiri pụrụ iche ọwa mere nke ukwuu dị ọcha quartz iko. Ọdụdọ gboo of kọmputa akụrụngwa nyere a mgbaàmà Ntụgharị, nke site na a iyi nke ìhè pulses na Site n'ibu ha na USB. Mgbe ndị ọzọ na njedebe nke ìhè-erite na-enweta a iyi na transcodes ya azụ ka akpa pulses. N'ihi dum usoro a electronically-achịkwa ma na bụ a digital akakabarede, ala distortion.

Iwu ndị dị otú ahụ installer, iji a pụrụ iche onwunwe - otu-mode eriri na multimode.

Optic edoghi ndị zuru nnọọ ebe nile, ọ bụghị nanị n'ihi na enweghị nke na nnyonye anya nnyefe nke mgbaàmà. N'etiti-apụghị ịgbagha agbagha uru nke a technology bụ a sara mbara gbalaga, a nnọọ ike mgbaàmà attenuation, enweghị atụ na-eguzogide ọ bụla nnyonye anya nke akpa agwa, nnukwu nnyefe nso, na-eme ọtụtụ iri puku kwuru iri kilomita. A ịrịba uru bụ ogologo okwu nkwukọrịta ọrụ, tọrọ iji installer,-dịkarịa ala 25 afọ.

ụdị eriri

Mgbe arịọnụ njikọ iji eriri-optic akara họrọ ma ọ bụ multimode ma ọ bụ otu mode eriri.

Gịnị bụ nke a USB? The isi nke eriri bụ quartz, ultrapure iko, nke nwekwara-agabiga a ìhè doo ya. A spraying ya anaghị eme n'ihi na shei Refractive index ala karịa isi, ya mere, ìhè doo na-kpam kpam gosipụtara site na mgbidi n'ime eriri.

Multimode ọma nke na ọ na ike na-agba ọsọ ọtụtụ narị ìhè ụdịdị na-ẹkenam ke iche iche akụkụ. Onye ọ bụla mode nwere ya ụzọ na, dị ka a na ya pụta, ndị pụrụ iche ịnọgide oge.

Isi drawback nke ụdị eriri - mode dispersion, nke asụchikwa na bandwit na egbochi ndị kacha akara ogologo. Transmitters maka multimode nkwurịta okwu edoghi ndị na-emekarị na kacha anya nke banyere 5 kilomita.

The nsogbu nke mbenata mode dispersion kpebie cable na a grajentị Refractive index profaịlụ nke isi. Nke a eriri, na iche ọkọlọtọ nhọrọ nhọrọ Refractive index mbelata si center isi na shei, nke na-enye ịrịba mma na kwa nke-ebute site ná mgbaàmà.

Ndị otu mode eriri e, dabeere na ọrụ na-aga site a nkwurịta okwu ọwa naanị otu mode (isi). Nke a na obibia nwere ọtụtụ uru. Ụfọdụ e ji mara na cable, mere nke otu-mode technology, iwu nke ịdị ukwuu mma karịa na-emepụta site multimode. Nke a bụ bụrụkwa ihe na-na-emetụta ndị na-ahọrọ na ihu ọma nke mbụ injinia na-ebikwasị ọhụrụ eriri optic njikọ. N'ezie, otu-mode eriri na-enye attenuation na 0,25db kwa kilometa, na ndịiche nke ọ bụ nnọọ obere na obosara bandwit enye a doro anya ma dị ngwa nnyefe nke nnukwu ichekwa data enweghị distortion.

Ma, e nwere na manu-otite ada na manu-otite. Nke a na ụdị ihe ndị ọzọ dị oké ọnụ karịa multimode eriri. Ebe ọ bụ na size nke ìhè-edu cores na a otu-cable bụ nnọọ obere, na radieshon input dị otú ahụ a USB bụ ihe ịma aka ma na-achọ nnọọ anya na-achịkwa splicing. Ọgwụgwụ njikọta maka ndị a chọpụtara na ndị dị oké ọnụ karịa multimode kontseviki e. Ke adianade do, nke ikpeazụ n'ihi na mfe nke ìhè doo input n'ime a sara mbara isi nke dị nnọọ mfe, ọnụ ala transmitters, nke nwekwara-emepụta a nnukwu ọnụ ọgụgụ nke mpi ụlọ ọrụ.