Single mode fiber: iyo yepakati girazi musimboti yakatetepa kwazvo (iyo yepakati dhayamita inowanzo 9 kana 10) μ m), imwe chete modhi ye optical fiber inogona kutapurirana.
Iyo intermodal dispersion ye-single-mode fiber idiki kwazvo, inokodzera kutaurirana kure, asi kune zvakare kuparadzirwa kwezvinhu uye waveguide dispersion.Nenzira iyi, iyo single-mode fiber ine zvakakwirira zvinodikanwa zvehupamhi hwe spectral uye kugadzikana kwechiedza chinobva, ndiko kuti, hupamhi hwekutarisa hunofanira kunge hwakamanikana uye kugadzikana kunofanira kunge kwakanaka.
Gare gare, zvakaonekwa kuti pa 1.31 μ PaM wavelength, kupararira kwezvinhu uye waveguide dispersion ye single-mode fiber yakanaka uye yakaipa, uye ukuru hwakafanana.Saka, 1.31 μ M wavelength dunhu rave rakanakisa kushanda hwindo re optical fiber kutaurirana, uye zvakare ndiro guru rekushanda bhendi reanoshanda optical fiber communication system 1.31μM iyo mikuru paramita yeyakajairwa single-mode fiber inotarwa neITU-T. mukurudziro yeG652, saka iyi mhando yefiber inonzi zvakare G652 fiber.
Kuenzaniswa nemultimode fiber, single-mode fiber inogona kutsigira kureba kwekutapurirana kureba.Mune 100Mbps Ethernet uye 1G gigabit network, imwe-modhi faibha inogona kutsigira kutapurirana kure kunopfuura 5000m.
Kubva pakuona kwemutengo, nokuti transceiver optical inodhura zvikuru, mari yekushandisa single-mode optical fiber ichave yakakwirira kudarika ye-multi-mode optical fiber cable.
Iyo refractive index kugoverwa kwakafanana neiyo mutant fiber, uye iyo dhayamita yepakati ingori 8 ~ 10 μ m.Chiedza chinopararira pamwe nepakati axis yefiber core mumutsara chimiro.Nekuti iyi mhando yefiber inogona chete kufambisa imwe modhi (kuderera kwenzvimbo mbiri dzepolarization), inodaidzwa kuti single-mode fiber, uye kukanganiswa kwayo kwechiratidzo kudiki kwazvo.
Tsanangudzo ye "single-mode optical fiber" mumabhuku ezvidzidzo: kazhinji, kana V iri pasi pe 2.405, imwe chete wave crest inopfuura nepakati pe optical fiber, saka inonzi single-mode optical fiber.Musimboti wayo wakatetepa kwazvo, anenge 8-10 microns, uye iyo mode dispersion idiki kwazvo.Chinhu chikuru chinokanganisa bhendi rekufambisa kwehupamhi hwefiber fiber kupararira kwakasiyana, uye nzira yekuparadzira ndiyo inonyanya kukosha, uye kupararira kwe-single-mode optical fiber idiki, Naizvozvo, chiedza chinogona kuendeswa kure kure muhuwandu hwakawanda. band.
Iyo single-mode optical fiber ine dhayamita yepakati ye10 microns, iyo inogona kubvumira imwe-mode danda kutapurirana uye kuderedza miganhu yebandwidth uye modal dispersion.Nekudaro, nekuda kweiyo diki yepakati dhayamita ye-single-modhi optical fiber, zvakaoma kudzora kutapurirana kwedanda, saka inoda inodhura zvakanyanya laser seyo mwenje sosi, uye iyo huru yekumisikidza ye single-modhi optical fiber iri mukupararira kwezvinhu, Imwe chete. mode Optical cable inonyanya kushandisa laser kuwana yakakwira bandwidth.Nekuti LED ichaburitsa huwandu hukuru hwemwenje masosi ane akasiyana bandwidth, iyo yemidziyo yekuparadzira inodikanwa yakakosha.
Kuenzaniswa nemultimode fiber, single-mode fiber inogona kutsigira kureba kwekutapurirana kureba.Mune 100Mbps Ethernet uye 1G gigabit network, imwe-modhi faibha inogona kutsigira kutapurirana kure kunopfuura 5000m.
Kubva pakuona kwemutengo, sezvo transceiver optical inodhura zvikuru, mari yekushandisa single-mode optical fiber ichave yakakwirira kudarika ye-multi-mode optical fiber cable.
Single mode fiber (SMF)
Kuenzaniswa ne multimode fiber, iyo dhayamita ye-single-mode fiber yakanyanya kutetepa, chete 8 ~ 10 μ m. Nokuti imwe chete nzira inotumirwa, hapana inter mode dispersion, kuduku kupararira uye yakakura bandwidth.Single mode fiber inoshandiswa mu1.3 ~ 1.6 μ Munharaunda yewavelength yeM, kuburikidza nekugadzirwa kwakakodzera kwerefractive index kugoverwa kwefiber optical uye kusarudzwa kwepamusoro-kuchena zvinhu kugadzirira cladding 7 times yakakura kudarika core, the kurasikirwa kudiki uye kupararira kushoma kunogona kuwanikwa panguva imwe chete mubhendi iri.
Single mode optical fiber inoshandiswa kureba uye yakakwirira-inogoneka optical fiber communication system, optical fiber local area network uye akasiyana optical fiber sensors.
Nguva yekutumira: Mar-08-2022