Txuas ntawm Optical Faib
Txhawm rau kom tau txais zoo txuas ntxiv kev txuag nyiaj, cov yam ntxwv ntawm lub tsom iav (feem ntau cov nqaj laser) yuav tsum sib phim rau cov fiber ntau. Cov lus qhia dav dav yog tias (1) lub chaw tsom mus rau qhov loj me, thiab (3) qhov xwm txheej lub ntsej muag yuav tsum tsis pub tshaj cov lej aperture ntawm cov fiber. Cov xwm txheej (1) thiab (2) thiab (2) tau qhia nyob rau sab laug ntawm daim duab 1, thiab mob multimode, thawj ob qho xwm txheej yog yooj yim yoog raws txoj cai loj. Yog li ntawd, txuam nrog txuas txuas txuas rau cov lej aperture ntawm aperture ntawm cov fiber ua tau zoo txuas nrog kev ua kom haum.
Txij ntawm no mus saib, txuas rau ib leeg-hom fibers yog qhov teeb meem nyuaj dua. Cov tub ntxhais me tseem ceeb tshaj plaws ntawm ib-hom-hom fiber ntau yuav tsum tau muaj ntau cov duab ntoo kom ua rau cov nqaj muaj kev sib txuas nrog cov kev ua tiav raws li ncua micron. Tsis tas li ntawd, hom ntawm cov xwm txheej laser yuav tsum sib phim hom kev ua kom muaj fiber. Hauv lwm lo lus, ntsuas kev ua tau zoo yog nyob ntawm Overlap Instrumental ntawm Gaussian hom nqaj thiab kwv yees Gaugussian tseem ceeb hom ntawm cov fiber.
Daim duab 1 schematic daim duab ntawm kho qhov muag txuas rau hauv multimode lossis ib hom fiber ntau (sab laug). Incidogy tej yam kev mob nyob rau hauv ib tug multimode fiber xws li lub teeb socloks (sab xis saum toj (sab saum toj txoj cai) thiab underfills (hauv qab txoj cai) muaj cov fiber.
Hom ntawm Optical Faib
Ntau yam sib txawv ntawm cov khoom siv kho tshiab tuaj yeem nthuav tawm qhov sib txuas lus sib txawv (tsawg dua 10 micromode diameters muaj cov tub ntxhais diamed los ntawm rau ntau pua microns. Ntau cov cawv muaj ntau yuav muaj maj mam lossis qib ua kom muaj npe ua kom muaj cov ntaub ntawv tshiab. Cov fibers tshwj xeeb kuj tseem muaj, suav nrog kev sib kis tau cov fibers, cend-insensitive fibers, thiab fibers rau huab cua sov.
Daim Duab 2 Txawv Sib Txawv
Vim tias lawv cov kev vam meej thiab muaj txiaj ntsig, ob hom tshwj xeeb ntawm cov neeg tshwj xeeb hauv qab no: Tsis tshua muaj lub ntiaj teb lub ntsiab lus doped fibed fibers (PCF).
Hauv ntiaj teb tsis tshua muaj doped fibers: rare ntiaj teb lub ntsiab doped fibers yog qhov tshwj xeeb rau cov dops fiber ntau tshwj xeeb (YB thiab ER-DOPED Kev siv ntawm ob-clad
High-zoo FBGS tuaj yeem tsim los ntawm cov qauv ua haujlwm ntawm UV uas cov duab fiber ntau yog nthuav tawm (tsis muaj lub ntiaj teb lub ntiaj teb cov khoom siv tau zoo kawg nkaus. Gratings yog tsim thaum muaj fiber ntau yog tshwm sim rau cov qauv ntawm UV, uas yog feem ntau yog tsim los ntawm theem phone ntsej muag. Los ntawm kev tsim khoom lag luam, hom kab no yog nrawm nrawm, txhim khu kev qha thiab pom kom meej meej. Bragg Gratings (FBGs) muaj peev xwm ua tiav ntau yam rawv siab (saib Daim iav luv luv
Photonic Crystal fiber ntau (PCF): Photive cov ntaub ntawv nyob rau hauv uas cov kev ntsuas hluav taws xob tsis tu ncua nrog txoj haujlwm. Hauv PCF, qhov kev hloov pauv no tau ua tiav los ntawm cov chaw haujlwm tsis tu ncua lossis cov pa taws rau lub axis (saib daim duab 2). Tsis zoo li cov khoom siv kho kho qhov muag zoo nkauj, ob qho tib si tseem ceeb thiab cov cladding yog ua los ntawm tib cov khoom siv. Yog li no, tag nrho cov chaw pov tseg hauv PCFs tshwm sim los ntawm cov khoom siv uas tsis muaj qhov tseeb Daim teb diameters los ntawm UV rau IR, kev muaj peev xwm tsis muaj nuj nqis rau cov pcfroscopy, kev ntsuas, kev sib tham, kev lag luam ua thiab kev tiv thaiv kev lag luam.
Daim duab 3 FBG Schematic thiab sawv cev sib kis thiab muaj kev cuam tshuam rau lub sijhawm ntev.
