Yuav ua li casfiber ntau opticshauj lwm:
Lub hauv paus ntsiab lus ua haujlwm ntawm optical fiber yog:tag nrho reflection ntawm lub teeb .
Fiber ntau dispersion:
Ua rau dispersion:
Hauv cov khoom siv kho qhov muag, lub teeb liab kho qhov muag yog tsim los ntawm ntau yam sib txawv. Vim yog qhov sib txawv ntawm kev nthuav tawm ceev ntawm txhua qhov ntau zaus los yog hom kev tivthaiv ntawm lub teeb liab, tom qab ib qho kev ncua deb ntawm cov fiber ntau optical, yuav muaj lub sijhawm ncua kev sib txawv ntawm cov khoom sib txawv, ua rau cov teeb liab kis tau tus mob cuam tshuam, pulse broading, qhov tshwm sim no yog hu ua fiber dispersion.
Cov nyhuv ntawm dispersion:
Lub hav zoov ntawm optical fiber dispersion distorts thiab broadens lub transmission pulse, uas ua rau intersymbol cuam tshuam. Txhawm rau kom ntseeg tau tias kev sib txuas lus zoo, nws yog ib qho tsim nyog yuav tsum tau ua kom lub sij hawm sib cuam tshuam ntawm cov cim, uas yog, kom txo qis kev sib kis ntawm cov teeb liab, uas txwv tsis pub muaj peev xwm sib txuas lus thiab kev sib kis ntawm cov kab hluav taws xob optical.
Kev faib tawm ntawm dispersion:
Raws li qhov ua rau dispersion, fiber ntau dispersion yuav muab faib ua hom dispersion, khoom dispersion, waveguide dispersion thiab polarization dispersion.
Fiber poob:
Kev poob ntawm optical fiber yog hais txog qhov txo qis ntawm lub zog kho qhov muag vim qhov nqus, tawg thiab lwm yam laj thawj tom qab cov teeb liab optical kis tau los ntawm cov khoom siv kho qhov muag.
tawg poob. Linear Scattering; Nonlinear Scattering; Structure Imperfect Scattering.
Lwm yam attenuation: microbending attenuation, thiab lwm yam Optical fiber yog mos thiab tuaj yeem khoov, tab sis tom qab khoov rau qee qhov, txawm hais tias cov fiber ntau tuaj yeem coj lub teeb, nws yuav hloov txoj kev sib kis ntawm lub teeb. Cov hom kis tau tus mob yog hloov mus rau hom hluav taws xob, kom ib feem ntawm lub teeb lub zog nkag mus rau hauv cov cladding los yog dhau los ntawm cov cladding los ua ib hom hluav taws xob thiab tawm mus rau sab nraud, ua rau poob. Thaum lub vojvoog khoov loj dua 5-10cm, qhov poob los ntawm kev khoov tuaj yeem tsis quav ntsej.
