Kuendesa kureba kwe-single-mode fiber: 64-channel transmission ye40G Ethernet inogona kureba se2,840 mamaira pane imwe-mode cable. Iyo single mode fiber inonyanya kuumbwa ne core, cladding layer uye coating layer.Musi wacho wakagadzirwa nechinhu chakajeka kwazvo.Kupfeka kune refractive index idiki zvishoma pane core, zvichikonzera optical waveguide effect inobvumira vazhinji. ye electromagnetic field kuti ivharwe mu core.The coating acts to protect The fiber inodzivirirwa kubva kune unyoro uye mechanical abrasion, ichiwedzera kushanduka kwefiber. Kunze kwechifukidzo chekuputira, jekete repurasitiki rinowanzowedzerwa.
Ndeupi musiyano uripo pakati pe single mode fiber uye multimode fiber?
Musiyano mune refractive index: Single-mode fibers inoshandisa nhanho index profile. Multimode fibers inogona kushandisa nhanho index profiles kana graded index profiles.Naizvozvo, quartz fibers inogonawo kazhinji kushandisa multimode step index fibers, multimode graded index fibers, uye single mode step index fibers. Mhando nhatu.
Musiyano wenzira yekufambisa: imwe-mode fiber inogona kungoendesa imwe nzira kune yakapihwa yeavelength yekushanda, uye multimode fiber inogona kutumira nzira dzinoverengeka.Kuparidzirwa kwemafungu emagetsi mu optical fiber ndeye dielectric circular waveguide.Kana chiedza chiripo. inonyatso kuratidzwa pachimiro chepakati, iyo electromagnetic wave inovharirwa mukati, iyo inonzi inotungamirwa wave kana inotungamirwa modhi. Kune yakapihwa inotungamirwa wave uye inoshanda wavelength, kune akasiyana mamiriro ezviitiko anogutsa mamiriro ekuratidzira akazara, anonzi akasiyana modes eanotungamirwa masaisai. Yakakamurwa kuita multimode faibha uye single mode faibha mune kutapurirana modhi.
Musiyano mukutapurirana chinhambwe: kureba kwekufambisa uye kutapurirana bandwidth ye-single-mode fiber zviri pachena nekuda kwemultimode fiber. Kana iyo nzvimbo yekufambisa yakakura kupfuura 5 km, iyo yakakura-bhendi data chiratidzo inotapurirwa kwenguva yakareba kuti isarudze imwe-modhi fiber.Kana iyo nzvimbo yekufambisa iri makiromita mashoma, akawanda-mode ndiyo yakanakisa sarudzo nekuti iyo LED transmitter/receiver inoda laser mwenje pane imwechete modhi. Yakachipa zvakanyanya.
Musiyano wewavelength yefiber transmission: single-mode fiber ine diki dhayamita yepakati uye inogona kungoparidzirwa mune imwechete modhi pane yakapihwa yeavelength yekushanda, ine bandwidth yekufambisa uye hukuru hwekutakura. Multimode fiber is optical fiber inogona kufambisa panguva imwe chete mune akawanda modes pane yakapihwa yekushanda wavelength. Multimode faibha ine hurombo hwekutapurirana kuita pane imwechete mode fiber.