Kufotokozera: Amplifier ya Erbium-doped fiber EDFA Optical Amplifier

Kufotokozera: Amplifier ya Erbium-doped fiberChokulitsa cha EDFA Optical

Chowonjezera cha fiber optical chopangidwa ndi Erbium (EDFA, ndiko kuti, chowonjezera chizindikiro cha kuwala chokhala ndi Er3 + doped mu fiber core kudzera mu chizindikiro) ndi chowonjezera choyamba cha kuwala chomwe chinapangidwa ndi University of Southampton mu 1985, ndipo ndi chimodzi mwa zinthu zazikulu kwambiri zopanga mu kulumikizana kwa fiber. Ulusi wopangidwa ndi Erbium ndi mtundu wa ulusi wokhala ndi ma ion ochepa a rare earth element erbium (Er) mu quartz fiber, womwe ndi pakati paChojambulira cha fiber chopangidwa ndi ErbiumKuyambira kumapeto kwa zaka za m'ma 1980, zinthu zazikulu zachitika pa kafukufuku wa ma amplifiers a fiber opangidwa ndi erbium. Ukadaulo wa WDM wawonjezera kwambiri mphamvu yolumikizirana ndi fiber optical. Ndiwo amplifier yogwiritsidwa ntchito kwambiri polumikizirana ndi fiber optical.

Kugwiritsa Ntchito: Cholumikizira cha fiber optical ndi chipangizo cholumikizira chomwe chimakulitsa mwachindunji chizindikiro cha kuwala mu dongosolo lolumikizirana la fiber optical. Mu dongosolo lolumikizirana pogwiritsa ntchito fiber optical, ndi ukadaulo womwe umakulitsa mwachindunji chizindikiro cha kuwala popanda kusintha chizindikiro cha kuwala kukhala chizindikiro chamagetsi. Cholumikizira cha fiber optical cha Erbium (EDFA Optical Amplifier, kutanthauza kuti, cholumikizira cha chizindikiro cha kuwala chokhala ndi erbium ion Er3 + mu fiber core kudzera mu chizindikiro) ndi cholumikizira choyamba cha kuwala chomwe chinapangidwa ndi University of Southampton ku United Kingdom ndi Japan's Tohoku University, ndi chimodzi mwazinthu zazikulu kwambiri zopanga zolumikizirana za fiber optical. Cholumikizira cha fiber optical cha Erbium ndi mtundu wa fiber wokhala ndi ma ion ochepa a rare earth element erbium (Er) mu quartz fiber, yomwe ndi maziko a cholumikizira cha fiber optical cha Erbium. Kuyambira kumapeto kwa zaka za m'ma 1980, zinthu zazikulu zachitika pakufufuza kwa zolumikizira za fiber optical cha erbium. Ukadaulo wa WDM wawonjezera kwambiri mphamvu yolumikizirana ya fiber optical. Ndi cholumikizira cha fiber optical chomwe chimagwiritsidwa ntchito kwambiri polumikizirana ndi fiber optical.

Gawo loyambira

Dzina la Mawu: Erbium-doped fiber amplifier

Mawu ofanana:Chokulitsa Chowunikira

Ulusi wa quartz wokhala ndi zinthu zosowa zapadziko lapansi (monga Nd, Er, Pr, Tm, ndi zina zotero) ukhoza kupanga makina a laser amitundu yambiri, ndikuwonjezera mwachindunji kuwala kwa chizindikiro cholowera pansi pa mphamvu ya kuwala kwa pampu. Pambuyo popereka mayankho oyenera, laser ya fiber imapangidwa. Kutalika kwa nthawi yogwirira ntchito kwa ND-doped fiber amplifier ndi 1060nm ndi 1330nm, koma chitukuko ndi kugwiritsidwa ntchito kwake ndizochepa chifukwa cha kusiyana ndi doko labwino kwambiri la kulumikizana kwa ulusi ndi zifukwa zina. Kutalika kwa nthawi yogwirira ntchito kwa EDFA ndi PDFA kuli pawindo lotsika kwambiri (1550nm) ndi zero dispersion wavelength (1300nm) la kulumikizana kwa ulusi wowala motsatana, ndipo TDFA imagwira ntchito mu S-band, yomwe ndi yoyenera kwambiri kugwiritsa ntchito makina olumikizirana a ulusi wowala. Makamaka EDFA, yomwe ndi chitukuko chofulumira kwambiri, yakhala yothandiza.

Pamaziko a chitukuko cha ulusi wopangidwa ndi erbium, ma amplifiers ambiri atsopano a fiber akupitilira kuwonekera. Mwachitsanzo, dual-band fiber amplifier (DBFA) yochokera ku ulusi wopangidwa ndi erbium ndi broadband optical amplifier, ndipo broadband imatha kuphimba pafupifupi bandwidth yonse ya wavelength division multiplexing (WDM). Chinthu chofanana ndi ichi ndi ultra-wideband optical amplifier (UWOA), yomwe ili ndi bandwidth yolumikizira kuti iwonjezere njira zokwana ma wavelength 100 mu ulusi umodzi.

Kugwiritsa ntchito moyenera

Kugwiritsa ntchito Erbium-doped fiber amplifier (EDFA Amplifier) ​​mu njira yolumikizirana ya digito ya optical fiber kungapulumutse ma optical Repeaters ambiri, ndipo mtunda wotumizirana umawonjezeka kwambiri, zomwe ndizofunikira kwambiri pamakina a trunk a chingwe omwe amayenda mtunda wautali.

Ntchito zake zazikulu ndi izi:

1, ingagwiritsidwe ntchito ngati amplifier ya mtunda wopepuka. Ma electronic fiber optic Repeaters achikhalidwe ali ndi zoletsa zambiri. Mwachitsanzo, chizindikiro cha digito ndi chizindikiro cha analog zikasinthidwa kukhala china ndi china, chobwereza chiyenera kusinthidwa moyenerera; Zipangizo zikasintha kuchoka pa liwiro lotsika kupita pa liwiro lalikulu, chobwereza chiyenera kusinthidwa moyenerera. Zimangotumiza kutalika komweko kwa chizindikiro cha kuwala, ndipo kapangidwe kake ndi kovuta, kokwera mtengo, ndi zina zotero. Ma amplifier a fiber opangidwa ndi Erbium amathetsa zofooka izi, osati kokha kuti sayenera kusintha ndi kusintha kwa mawonekedwe a chizindikiro, komanso safunikira kusinthidwa pamene chipangizocho chikukulitsidwa kapena kugwiritsidwa ntchito pogawa mafunde a kuwala.

2, ingagwiritsidwe ntchito ngati chopatsira mawu cha optical transmitter post amplifier ndi chopatsira mawu cha optical receiver preamplifier. Monga chopatsira mawu cha optical transmitter, mphamvu yotumizira ya laser ikhoza kuwonjezeka kuchoka pa 0db mpaka +10db. Ikagwiritsidwa ntchito ngati chopatsira mawu cha optical receiver preamplifier, mphamvu yake imathanso kusinthidwa kwambiri. Chifukwa chake, ma amplifiers 1-2 okha a erbium-doped ndi omwe amayikidwa pamzere, ndipo mtunda wotumizira chizindikiro ukhoza kuwonjezeka ndi 100-200km.

Kuphatikiza apo, amplifier ya fiber yopangidwa ndi erbium (Chokulitsa cha EDFA) kuthetsa vutoli. Ubwino wapadera wa ma amplifiers a fiber opangidwa ndi Erbium wadziwika padziko lonse lapansi, ndipo wagwiritsidwa ntchito kwambiri. Komabe, ma amplifiers a fiber opangidwa ndi Erbium alinso ndi zofooka zina. Mwachitsanzo, polankhulana patali sipangakhale mmwamba ndi pansi, kulumikizana kwa siteshoni kumakhala kovuta kwambiri, sikophweka kupeza zolakwika, moyo wa gwero la kuwala kwa pampu si wautali, ndi kupita patsogolo kosalekeza kwa ukadaulo wolumikizirana ndi fiber, mavutowa adzathetsedwa mokwanira.