Gusobanukirwa itumanaho rya fibre optique bishingiye ku ihame ryo kugaragaza urumuri rwose.
Iyo urumuri rukwirakwira hagati muri fibre optique, refractive index n1 y’umuyoboro wa fibre iba iri hejuru kurusha iya cladding n2, kandi igihombo cy’umuyoboro kiba kiri hasi ugereranije n’iya cladding, ku buryo urumuri ruzanyura mu mucyo wose, kandi ingufu z’urumuri rwarwo zoherezwa ahanini mu mutima. Bitewe n’izuba ryinshi rikurikiranye, urumuri rushobora koherezwa kuva ku mpera imwe ujya ku yindi.
Ishyirwa mu byiciro hakurikijwe uburyo bwo kohereza amakuru: uburyo bumwe n'uburyo bwinshi.
Uburyo bumwe bufite umurambararo muto w'ibanze kandi bushobora kohereza gusa imiraba y'urumuri rw'uburyo bumwe.
Fibre optique ifite uburebure bunini bw'imbere kandi ishobora kohereza urumuri mu buryo butandukanye.
Dushobora kandi gutandukanya fibre optique y’uburyo bumwe n’iy’uburyo bwinshi dukurikije ibara ry’isura.
Inyinshi muri fibre optique zifite uburyo bumwe bwo kohereza amakuru zifite ikoti ry'umuhondo n'ubururu, kandi insinga y'imbere ni 9.0 μm. Hari uburebure bubiri bw'uburebure bwa fibre imwe: 1310 nm na 1550 nm. 1310 nm ikoreshwa muri rusange mu kohereza amakuru mu ntera ngufi, intera iri hagati cyangwa intera ndende, naho 1550 nm ikoreshwa mu kohereza amakuru mu ntera ndende no mu ntera ndende cyane. Intera yo kohereza amakuru iterwa n'imbaraga zo kohereza amakuru mu buryo bwa optique. Intera yo kohereza amakuru mu buryo bwa optique ya 1310 nm ni 10 km, 30 km, 40 km, nibindi, kandi intera yo kohereza amakuru mu buryo bwa optique ya 1550 nm ni 40 km, 70 km, 100 km, nibindi.
Imigozi y'urumuri ifite uburyo bwinshi ikunze kuba ikoti ry'umuhondo/imvi rifite imiyoboro y'umukara/beige, 50.0 μm na 62.5 μm. Uburebure bw'umurambararo wa fibre ifite uburyo bwinshi muri rusange ni 850 nm. Intera yo kohereza fibre ifite uburyo bwinshi ni ngufi, muri rusange iri muri metero 500.
Igihe cyo kohereza: Gashyantare-17-2023