Ndi fiber iti yomwe imagwiritsidwa ntchito popanga ma network?
Pali mitundu itatu ikuluikulu: G.652 fiber single-mode fiber, G.653 dispersion-shifted single-mode fiber and G.655 sanali ziro dispersion-anasintha CHIKWANGWANI.
G.652 single-mode fiberali ndi kubalalitsidwa kwakukulu mu C-gulu 1530 ~ 1565nm ndi L-gulu 1565 ~ 1625nm, zambiri 17 ~ 22psnm• km, pamene mlingo dongosolo kufika 2.5Gbit/s kapena kuposa, kubalalitsidwa chipepeso chofunika, pa 10Gbit/s Dispersion chipukuta misozi mtengo wa dongosololi ndi wokwera, ndipo ndi mtundu wamba wa fiber womwe umayikidwa mu transmission network pakali pano.
Kubalalika kwaG.653 dispersion-stifted fibermu C-band ndi L-band nthawi zambiri ndi -1～3.5psnm•km, ndi zero dispersion pa 1550nm, ndipo dongosolo mlingo akhoza kufika 20Gbit/s ndi 40Gbit/s, amene ndi single-wavelength ultra-atali mtunda kufala Ulusi wabwino kwambiri. Komabe, chifukwa cha kufalikira kwa zero, pamene DWDM imagwiritsidwa ntchito kukulitsa, zotsatira zopanda malire zidzachitika, zomwe zimatsogolera ku crosstalk, zomwe zimapangitsa kuti mafunde anayi akusakanikirana FWM, kotero DWDM si yoyenera.
G.655 ulusi wopanda ziro dispersion-shifted fiber: G.655 non-zero dispersion-shifted fiber imakhala ndi dispersion ya 1 mpaka 6 psnm•km mu C-band, ndipo kawirikawiri 6-10 psnm•km mu L-band. Kubalalitsidwa ndi kochepa ndipo kumapewa ziro. Malo obalalika samangoletsa kusakaniza kwa mafunde anayi a FWM, angagwiritsidwe ntchito pakukula kwa DWDM, komanso amatha kutsegula machitidwe othamanga kwambiri. Chingwe chatsopano cha G.655 chikhoza kukulitsa malo ogwira ntchito ku 1.5 mpaka 2 nthawi ya fiber wamba, ndipo malo akuluakulu ogwira ntchito amatha kuchepetsa mphamvu zamagetsi!
Kuti mudziwe zambiri zaukadaulo, chonde titumizireni:[imelo yotetezedwa]