Ukurikije ibyifuzo bitandukanye byabakoresha, ubwoko butandukanye bwa serivisi, hamwe niterambere ryikoranabuhanga mubyiciro bitandukanye, uburyo bwa sisitemu yo gutumanaho ya fibre optique irashobora kuba itandukanye.
Kugeza ubu, umubare munini wa sisitemu ikoreshwa muburyo bwa optique fibre sisitemu yo gutumanaho ya sisitemu yo guhinduranya imbaraga / gutahura neza (IM / DD). Igishushanyo mbonera cyo guhagarika iyi sisitemu cyerekanwe ku gishushanyo cya 1. Nkuko bigaragara kuri iyo shusho, sisitemu yo gutumanaho ya fibre optique igizwe ahanini na transmitter optique, fibre optique, hamwe niyakira.
Igishushanyo 1 Igishushanyo mbonera cya sisitemu yo gutumanaho ya fibre optique
Muri sisitemu-itumanaho ya optique ya fibre itumanaho, inzira yo kohereza ibimenyetso: ibimenyetso byinjira byoherejwe kuri optique ya transmitter ya terefegitura ihindurwamo imiterere ya code ikwiranye na fibre optique nyuma yo guhinduka, hamwe nuburemere bwurumuri Inkomoko itwarwa nuburyo butaziguye na moteri yumuzunguruko Modulation, kugirango ingufu za optique zituruka kumasoko yumucyo ihinduka hamwe nibimenyetso byinjira byinjira, ni ukuvuga, isoko yumucyo irangiza guhindura amashanyarazi / optique kandi ikohereza ibimenyetso byamashanyarazi bihuye na fibre optique yo kohereza; kumirongo ya sisitemu yitumanaho, kurubu, fibre optique fibre imwe iterwa nibiranga uburyo bwiza bwo kohereza; nyuma yikimenyetso kigeze ku iherezo ryakiriwe, ibimenyetso byinjira byinjira byabanje kumenyekana neza na fotodetekeri kugirango birangize optique / amashanyarazi, hanyuma byongerewe, bingana, kandi bigacirwa urubanza. Urukurikirane rwo gutunganya kugirango rusubize ibimenyetso byamashanyarazi byumwimerere, bityo birangize inzira yose yo kohereza.
Kugirango hamenyekane ireme ryitumanaho, optique isubiramo igomba gutangwa intera ikwiye hagati ya transcevers. Hariho ubwoko bubiri bwingenzi bwibisubirwamo muburyo bwa optique ya fibre itumanaho, imwe nisubiramo muburyo bwa optique-amashanyarazi-optique ihinduka, naho ubundi ni amplifier optique yongerera ibimenyetso bya optique.
Muri sisitemu yo gutumanaho ya fibre optique, ibintu byingenzi byerekana intera yerekana ni ugutakaza fibre optique hamwe numuyoboro mugari.
Mubisanzwe, kwiyongera kwa fibre kuburebure bwikwirakwizwa muri fibre bikoreshwa mukugereranya igihombo cya fibre, kandi igice cyacyo ni dB / km. Kugeza ubu, fibre optique ya silika ifatika ifite igihombo cya 2 dB / km muri 0.8 kugeza 0.9 mm; igihombo cya 5 dB / km kuri 1,31 mm; no kuri 1.55 mm, igihombo gishobora kugabanuka kugera kuri 0.2 dB / km, ikaba yegeranye na Theoritike ntarengwa yo gutakaza fibre ya SiO2. Ubusanzwe, 0,85 mm byitwa uburebure-buke bwitumanaho rya fibre optique; 1.31 mm na 1.55 mm byitwa uburebure-burebure bwitumanaho rya fibre optique. Nibintu bitatu bifatika bitakaza igihombo gikora mumashanyarazi ya fibre optique.
Mu itumanaho rya fibre optique, amakuru atangwa no kuboneka cyangwa kutagira ibimenyetso bya optique muri buri mwanya. Kubwibyo, intera ya relay nayo igarukira kumurongo wa fibre. Mubisanzwe, MHz.km ikoreshwa nkigice cyogukwirakwiza umurongo wa burebure bwa fibre. Niba umurongo wa fibre runaka watanzwe nka 100MHz.km, bivuze ko ibimenyetso bya 100MHz byonyine byemewe koherezwa kuri buri kilometero ya fibre. Intera ndende kandi ntoya yohereza umurongo, nubushobozi bwo gutumanaho.