Alava Optical o alava leisa tipiina masini o se ituaiga medium-infrared fusi leisa ma leisa fiber e pei o le mea faigaluega (maua ala).E mafai ona vaevaeina i se lalolagi seasea doped fiber leisa, opitika fiber nonlinear aafiaga leisa, tasi tioata alava leisa, fiber arc lasers, etc..faavae i luga o le faalauiloaina o le fiafia.Faatasi ai ma i latou, e seasea lalolagi doped fibre lasers matua matua, e pei o le doped erbium fiber amplifier (EDFA) ua faʻaaogaina lautele i faiga fesoʻotaʻiga fiber optical.O le maualuga o le fiber laser e masani ona faʻaaogaina i le militeri (photoelectric confrontation, laser detection, laser communication, etc.), laser processing (laser marking, laser robot, laser micromachining, ma isi), fomaʻi ma isi fanua.
O le fiber leisa e faia e le SiO2 e pei o le matrix mea o le tioata malosi fiber, o le mataupu faavae o le taiala malamalama o le faʻaaogaina lea o le aofaʻi atoa o mafaufauga o le faagaau, o lona uiga, pe a tuʻuina atu le malamalama mai le masini mataʻutia o le maualuga o le refractive. fa'asino ile tasi ole fa'asino ole fa'ailoga fa'ata'ita'i fa'atasi ai ma le fa'ailo e sili atu nai lo le fa'ailoga mata'utia, o le a fa'aalia le aofa'i atoa ma le fa'alavelave fa'afuase'i o le a fa'aalia atoa ile va'aiga mata'utia o le fa'ailoga maualuga.Pe a fa'ao'o mai le moli mai le mea fa'apipi'i mata'utia (o lona uiga, o le fa'asinomaga fa'asaga o le moli i totonu o le va'ava'a e tele) i le fa'aoga o le fa'aogaina o mea fa'apitoa (o lona uiga, e la'ititi le fa'asinomaga o le moli i totonu o le alalaupapa), o le malamalama uma e toe fa'afo'i atu i totonu o le auala muamua.E leai se malamalama e ulu atu i le auala density opitika lea o le faasino igoa refractive laititi.. O alava e leai ni mea masani e masani ona aofia ai se autu tioata faasinoupu maualuga (diamita o 4 ~ 62.5μm), o se vaeluaga maualalo fa'asino fa'asinomaga tioata tioata (core diameter. 125μm) ma le pito i fafo faʻamalosia resin faʻapipiʻi.E mafai ona vaevaeina auala fa'asalalau fa'apipi'i fa'apipi'i i le alava e tasi-mode (SM) ma alava tele-mode (MM).E tasi-mode fiber core diameter, o laʻititi laʻititi le lautele (4 ~ 12μm) e mafai ona faʻasalalau naʻo le tasi faʻataʻitaʻiga o le malamalama ma le faʻasalalauga faʻapitoa e laʻititi.Multimode fiber core diameter lea e mafiafia (diamita sili atu i le 50μm) e mafai ona faʻasalalau ituaiga eseese o le malamalama aʻo tele le faʻasalalauga intermodal.E tusa ai ma le fua faatatau o le tufatufaina atu, e mafai ona vaevaeina alava optic i laʻasaga faasinoupu (SI) fiber ma graded faasino igoa (GI) fiber.
Fa'ata'ita'i fa'ata'ita'iga leisa fibre doped earth, doped with rare earth particles as a gain medium, doped fibers ua fa'amauina i le va o fa'ata se lua e fai ai se lua resonant.O le moli pamu e tupu mai le M1 i totonu o le fiber ona maua ai lea o le laser mai le M2.Pe a pasi atu le moli pamu i le alava, e mitiia e ions seasea eleele i le alava ma le electrons e fiafia i se tulaga maualuga excitation e ausia le inversion o le faitau aofai o vaega.O vaega faʻafefeteina e faʻafeiloaʻi mai le maualuga maualuga o le malosi i le tulaga o le eleele i le tulaga o le radiation e maua ai le laser.
Taimi meli: Ian-08-2019