Cov Txheej Txheem Ntawm Ob Lub Pob Hluav Taws Xob rau hauv thiab Sab Nraum Sab ntawm Cov Ntxaib-Ntxhais Hluav Taws Xob Cable
Lub dual-core fiber muaj ob lub cores hauv kev tuav, uas yog ib qho tshwj xeeb fiber ntau. Pib los ntawm cov qauv ntawm lub cev ntawm cov kho qhov muag waveguide, dual-core fiber ntau yog tau muab faib ua coaxial dual-core fibers thiab non-coaxial dual-core fibers. Xyoo tsis ntev los no, photonic siv lead ua plaub yaig-ntxhais fiber ntau, ribbon twin-core fibers thiab ntxaib-core fibers kuj tau tshwm sim.
Coaxial ntxaib-ntxhais fiber ntau
Coaxial twin-core fiber, tseem hu ua ob-clad fiber los yog ob lub nplhaib ob tog tub ntxhais fiber ntau, txhais tau hais tias ob lub cores hauv cov cladding yog nyob ntawm tib lub axis nrog qhov nruab nrab ntawm cov cladding li lub axis, uas qhia tus qauv ntawm ob lub cores sab hauv thiab sab nraud. Cov coaxial ntxaib-cov plaub hau fiber ntau yog siv los ua cov muaj zog fiber ntau lasers.
Tsis-coaxial ntxaib-ntxhais fiber ntau
Tsis-coaxial ntxaib-ntxhais fiber ntau yog ib lub fiber nrog ob lub cores ywj siab hauv cov cladding. Raws li txoj hauj lwm faib ntawm ob lub cores, non-coaxial ntxaib-ntxhais fiber ntau tau muab faib ua axisymmetric (txheeb ze rau qhov chaw nruab nrab ntawm cov ua ke ntawm fiber ntau) tsis-coaxial ntxaib-core fiber thiab ib txoj kab kev hloov pauv tsis-coaxial ntxaib- tub ntxhais siv fiber. Axisymmetric non-coaxial symmetric ntxaib-ntxhais fiber ntau nrog ob cores symmetrical mus rau hauv nruab nrab ntawm lub waveguide. Qhov ob cores ntawm lub axis-hloov tsis-coaxial ntxaib-ntxhais fiber ntau yog tseem sib tshooj cores, tab sis cov kab sib luag ntawm ob lub cores tau tawm ntawm ib sab ntawm lub fiber. Feem ntau, piv txwv li, ib qho ntawm cov xaum tuaj yeem tuaj yeem nyob ncaj qha rau ntawm qhov nruab nrab nruab nrab ntawm tag nrho dual-core optical fiber. Tsis tas li ntawd, yog tias qhov refractive index thiab cov duab ntawm ob lub cores ntawm dual-core fiber yog tib yam, nws tuaj yeem raug hu ua matched dual-core fiber. Yog tias qhov ntsuas refractive thiab cov duab ntawm ob lub cores tsis zoo ib yam, nws tuaj yeem raug hu ua mismatched dual-core fiber.
