Kufotokozera: Erbium-doped fiber Amplifier EDFA Optical Amplifier

Kufotokozera: Erbium-doped fiber AmplifierEDFA Optical Amplifier

Erbium-doped optical fiber amplifier (EDFA, ndiko kuti, amplifier optical signal ndi Er3 + doped mu fiber core kupyolera mu siginecha) ndiye amplifier oyambirira opangidwa ndi University of Southampton mu 1985, ndipo ndi imodzi mwazopanga zazikulu kwambiri mu optical fiber communication. Ulusi wa Erbium-doped ndi mtundu wa ulusi wokhala ndi ma ion ochepa a rare earth element erbium (Er) mu ulusi wa quartz, womwe ndi phata laErbium-doped fiber amplifier. Kuyambira chakumapeto kwa zaka za m'ma 1980, zopambana zazikulu zachitika mu kafukufuku wa erbium-doped fiber amplifiers. Ukadaulo wa WDM wachulukitsa kwambiri kuthekera kwa kulumikizana kwa fiber. Ndiwo amplifier optical ogwiritsidwa ntchito kwambiri mu optical fiber communication.

Kugwiritsa ntchito: Optical fiber amplifier ndi chipangizo chamagetsi chamagetsi chomwe chimakulitsa mwachindunji chizindikiro cha kuwala mu optical fiber communication system. Mu njira yolankhulirana pogwiritsa ntchito optical fiber, ndi teknoloji yomwe imakulitsa mwachindunji chizindikiro cha kuwala popanda kutembenuza chizindikiro cha kuwala kukhala chizindikiro chamagetsi. Erbium-doped fiber amplifier (EDFA Optical Amplifier, ndiko kuti, chokulitsa chizindikiro cha kuwala chokhala ndi erbium ion Er3 + mu fiber core kudzera mu chizindikiro) ndiye chokulitsa choyamba chopangidwa ndi yunivesite ya Southampton ku United Kingdom ndi yunivesite ya Tohoku ya ku Japan, ndi imodzi mwazinthu zazikulu kwambiri zopangira mauthenga opangidwa ndi kuwala. Ulusi wa Erbium-doped ndi mtundu wa ulusi wokhala ndi ma ion ochepa a rare earth element erbium (Er) mu quartz fiber, womwe ndi phata la Erbium-doped fiber amplifier. Kuyambira chakumapeto kwa zaka za m'ma 1980, zopambana zazikulu zachitika mu kafukufuku wa erbium-doped fiber amplifiers. Ukadaulo wa WDM wachulukitsa kwambiri kuthekera kwa kulumikizana kwa fiber. Ndiwo amplifier optical ogwiritsidwa ntchito kwambiri mu optical fiber communication.

Basic parameter

Dzina la mawu: Erbium-doped fiber amplifier

Nthawi yofananira:Optical Amplifier

Ulusi wa quartz wokhala ndi zinthu zosowa zapadziko lapansi (monga Nd, Er, Pr, Tm, etc.) ukhoza kupanga makina a laser amitundu yambiri, ndikukulitsa mwachindunji kuwala kwa siginecha yolowera pansi pa kuwala kwa mpope. Pambuyo popereka ndemanga yoyenera, laser fiber imapangidwa. Kutalika kwa magwiridwe antchito a ND-doped fiber amplifier ndi 1060nm ndi 1330nm, koma kukula kwake ndi kugwiritsa ntchito kwake kumakhala kochepa chifukwa chopatuka padoko lolumikizana ndi fiber ndi zifukwa zina. Mafunde a mawonekedwe a EDFA ndi PDFA ali otsika kwambiri (1550nm) ndi zero dispersion wavelength (1300nm) zenera la optical fiber communication motsatana, ndipo TDFA imagwira ntchito mu S-band, yomwe ili yoyenera kwambiri pakugwiritsa ntchito makina opangira ma fiber optical. Makamaka EDFA, chitukuko chofulumira kwambiri, chakhala chothandiza.

Pamaziko a chitukuko cha erbium-doped fiber, zowonjezera zowonjezera zowonjezera zowonjezera zikupitiriza kuonekera. Mwachitsanzo, dual-band fiber amplifier (DBFA) yochokera ku erbium-doped fiber ndi chowonjezera chowonjezera chamagetsi, ndipo burodibandi imatha kuphimba pafupifupi bandwidth yonse ya wavelength division multiplexing (WDM). Chida chofananira ndi Ultra-wideband Optical amplifier (UWOA), yomwe imakhala ndi bandwidth yokulitsa mpaka 100 wavelength njira mu ulusi umodzi.

Kugwiritsa ntchito bwino

Kugwiritsa ntchito kwa Erbium-doped fiber amplifier (EDFA Amplifier) ​​mu makina ochiritsira optical fiber digito kulumikizana kungapulumutse Ma Repeaters owoneka bwino, ndipo mtunda wa relay ukuchulukirachulukira, womwe ndi wofunikira kwambiri pamakina amtundu wautali.

Ntchito zake zazikulu ndi izi:

1, ingagwiritsidwe ntchito ngati amplifier mtunda wopepuka. Traditional electronic fiber optic Repeaters ali ndi malire ambiri. Mwachitsanzo, pamene chizindikiro cha digito ndi chizindikiro cha analogi chikutembenuzidwa wina ndi mzake, wobwereza ayenera kusinthidwa molingana; Zida zikasintha kuchokera ku liwiro lotsika kupita ku liwiro lalikulu, wobwereza ayenera kusinthidwa moyenera. Ingotumizani mawonekedwe amtundu womwewo wa chizindikiro cha kuwala, ndipo kapangidwe kake ndi kovutirapo, kokwera mtengo, ndi zina zotero. Erbium-doped fiber amplifiers amagonjetsa zofooka izi, osati kuti asinthe ndi kusintha kwa mawonekedwe a siginecha, komanso safunikira kusinthidwa pamene zidazo zikukulitsidwa kapena kugwiritsidwa ntchito kwa optical wavelength division multiplexing.

2, itha kugwiritsidwa ntchito ngati amplifier optical transmitter post amplifier ndi Optical receiver preamplifier. Monga positi amplifier ya transmitter kuwala, mphamvu yotumizira laser imatha kuonjezedwa kuchokera ku 0db mpaka +10db. Ikagwiritsidwa ntchito ngati preamplifier ya optical receiver, kukhudzika kwake kumathanso kusintha kwambiri. Chifukwa chake, ma amplifiers a 1-2 okha a erbium-doped amayikidwa pamzere, ndipo mtunda wotumizira ma siginali ukhoza kuwonjezeka ndi 100-200km.

Kuphatikiza apo, erbium-doped fiber amplifier (EDFA Amplifier) kuthetsa vuto. Ubwino wapadera wa Erbium-doped fiber amplifiers wadziwika ndi dziko lapansi, ndipo wakhala akugwiritsidwa ntchito kwambiri. Komabe, ma amplifiers a Erbium-doped fiber alinso ndi malire. Mwachitsanzo, mu kulankhulana mtunda wautali sangakhale mmwamba ndi pansi, siteshoni malonda kukhudzana ndi zovuta, zovuta kupeza zolakwika, mpope kuwala gwero moyo si yaitali, ndi patsogolo mosalekeza wa luso kuwala CHIKWANGWANI kulankhulana, mavuto amenewa adzathetsedwa mokhutiritsa.