Dispersion cuam tshuam nyob rau hauv fiber optic kis tau tus mob

Nyob rau hauv fiber optic kis tau tus mob, muaj peb lub ntsiab dispersion los: chromatic dispersion, modal dispersion, thiab polarization hom dispersion. Cov teebmeem dispersion no ua rau muaj kev cuam tshuam thiab nthuav dav ntawm cov teeb liab optical thaum sib kis.

Chromatic Dispersion:

Nqe lus piav qhia: Chromatic dispersion ncua yog vim qhov sib txawv wavelengths (frequency) ntawm cov teeb liab kho qhov muag hauv fiber ntau propagation ceev los ntawm qhov sib txawv.
Yog vim li cas: Cov yam ntxwv dispersion ntawm fiber optic cov ntaub ntawv ua rau sib txawv wavelengths ntawm lub teeb teeb liab propagate ntawm txawv speeds. luv wavelength teeb liab propagation ceev kuj ceev, ntev wavelength teeb liab propagation ceev kuj qeeb.
Kev cuam tshuam: Kev ncua qeeb yuav ua rau kev nthuav dav ntawm optical mem tes, ua rau lub teeb liab ntawm tus lej crosstalk nce, thiab txwv qhov kis tus nqi thiab kev sib kis ntawm cov teeb liab optical.
Modal Dispersion:

Nqe lus piav qhia: Modal dispersion yog cov nyhuv dispersion uas tshwm sim hauv multimode fibers.
Ua rau: Txij li thaum multimode fiber txhawb ntau hom fiber ntau (txoj kev ntawm kev nthuav dav ntawm lub teeb kab teeb), lub teeb ntawm ntau hom mus txawv tebchaws los ntawm qhov kawg ntawm cov fiber ntau, ua rau lub teeb liab nthuav dav thiab cuam tshuam.
Kev cuam tshuam: Hom dispersion ua rau muaj kev cuam tshuam thiab nthuav dav ntawm cov teeb liab kho qhov muag, txwv qhov bandwidth thiab kev ncua deb ntawm fiber optic kis tau tus mob. Nws yog tshwj xeeb yog qhov tseem ceeb nyob rau hauv kev ncua deb thiab kev kub ceev kis tau tus mob.
Polarization Hom Dispersion:

Nqe lus piav qhia: Polarization hom dispersion yog cov nyhuv dispersion tshwm sim los ntawm kev sib txuas ntawm polarization lub xeev ntawm lub teeb nyob rau hauv ib qho optical fiber.
Ua rau: Vim qhov tsis sib xws ntawm cov fiber ntau lossis kev ntxhov siab thiab lwm yam, qhov sib txawv polarization lub xeev ntawm lub teeb nyob rau hauv fiber ntau propagation ceev yog txawv, uas ua rau distortion thiab broaden ntawm lub optical teeb liab.
Cov teebmeem: Polarization hom dispersion ua rau lub sijhawm sib txawv ntawm lub xeev polarization sib txawv ntawm cov teeb liab kho qhov muag hauv fiber ntau, ua rau lub teeb liab distortion thiab inter-code crosstalk.
Cov teebmeem dispersion no yog ib qho ntawm cov kev txwv loj hauv fiber ntau optic kis tau tus mob. Txhawm rau txo qhov cuam tshuam ntawm kev cuam tshuam ntawm cov teeb liab kho qhov muag, cov txheej txheem kev them nyiaj dispersion, kev siv cov khoom siv fiber ntau tshwj xeeb, thiab kev ua kom zoo ntawm kev sib txuas ntawm fiber ntau tuaj yeem siv los txhim kho kev ua tau zoo thiab kev ntseeg siab ntawm fiber ntau optic kis systems.