Noun kev piav qhia ntawm ob peb yam Optical Passive Devices
Noun kev piav qhia ntawm ob peb yam Optical Passive Devices
1) PON yog dab tsi?
PON yog lus Askiv hu ua Passive Optical Network. Vim nws txoj kev muaj peev xwm loj, cov nqi tsawg thiab kev siv tshuaj txuag cov roj, PON tau tam sim no los ua lub tshuab kho qhov muag loj hauv ntiaj teb, thiab yog siv los ntawm fiber ntau hauv tsev (FTTH) network. PON yog tsim los ntawm OLT, optical splitter thiab ONU. Raws li kev pom zoo, PON muab faib ua EPON, GPON, WDM-PON thiab lwm yam.
2) Qhov khoos phis kho qhov muag zoo li cas?
Optical passive ntaus ntawv yog ib yam ntawm cov khoom siv kho qhov muag uas tsis cia lwm yam sab nraud qhov hluav taws xob lossis hluav taws xob, thiab ua tau qee qhov kev kho qhov muag los ntawm lawv tus kheej, xws li cov coupler, lim thiab hais txog. Nws txoj haujlwm ua haujlwm ua ke nrog rau lub cev thiab kev xav ntawm geometrical optics, thaum laser transceiver ntaus raws li photoelectric zog hloov dua siab tshiab hu ua cov khoom siv ubno.
3) Cov khoom siv kho qhov muag tau zoo li cas?
Optical passive cov cuab yeej ua tau raws li lawv cov txheej txheem thiab cov haujlwm. Raws li qhov sib txawv ntawm tus txheej txheem, kev kho qhov muag pom tau zoo yuav muab faib ua cov khoom siv fiber ntau thiab cov twj siv twj ywm tib yam nkaus xwb. Raws li qhov txawv zog, lawv muaj peev xwm raug muab faib ua cov khoom siv kho qhov muag, qhov muag kho qhov muag , qhov muag optical splitter , kho qhov muag optical wavelength cov cuab yeej, kev kho qhov muag optical, hloov kho qhov muag, thiab kho qhov muag.
4) Qhov tseem ceeb tshaj plaws ntawm kev ntsuas cov cuab yeej siv kho qhov muag zoo li cas?
Lub ntsiab technical technical los ntsuas kev kho qhov muag pom zoo xws li: ntxig rau kev poob, rov poob, bandwidth, nrog ib ce thiab qaug, yuam kev quab yuam, kev tshem tawm ntawm cov kabmob, kev rho tawm ntawm cov channel, lub davhlau yaig, kev sib txuas ntawm kev hloov, khiav ceev, thiab lwm yam. Txawv cov cuab yeej sib txawv ntawm cov kev ntsuas, tab sis feem ntau ntawm cov khoom siv kho qhov muag pom tau tias yuav tsum tau qis dua qhov kev poob qis, kev xav txog kev poob siab, thiab kev ua hauj lwm ntau dua.
5) PLC yog dab tsi?
PLC yog cov lus Askiv hu ua Planar Lightwave Circuit, uas yog cov phiajcim optical waveguide. Tus kho qhov muag pom zoo thiab cov kab ntsig sib txawv, PLC yog siv los ntawm semiconductor fabrication, uas muaj peev xwm siv qhov khoom nruab nrog ntau lub zog rau hauv ib lub ntim. PLC yog cov kev siv technology ntawm kev sib txuas ntxiv ntawm kev teeb tsa kev sib txuas duab, kev hloov kho, kev hloov me me. Cov cuab yeej siv uas siv PLC technology xws li: optical splitter, arrayed waveguide grating (AWG), kuj tsis paub meej optical attenuator (VOA), kuj tsis paub meej optical attenuation combiner (VMUX), reconfigurable optical add-drop multiplexer (ROADM) thiab ntxiv rau.
6) Qhov zoo ntawm PLC splitter piv rau FBT optical splitter zoo li cas?
PLC splitter muaj ntau txoj haujlwm ua haujlwm tshuav channel, zoo sib xws, me me ntim, ua haujlwm siab dav dav, kev ntseeg siab, tam sim no qhov kev txuas ntawm OLT thiab ONU thiab qhov kev paub ntawm lub teeb liab qhov muag fais fab PON lub network.
7) Qhov sib txawv ntawm cov qhab-nees PLC splitter thiab peb FBT qhov rais splitter yog dab tsi?
Vim tias txoj haujlwm ua haujlwm thiab kev txwv ntawm kev ua haujlwm, cov FBT splitter yuav ua tau raws li feem ntau ntawm cov kev hloov ntawm peb lub tshav puam ntau, uas yog hu ua peb qhov rais splitter. Thaum lub PLC splitter tsis tshua muaj qis heev (1260-1650nm), thiaj li ua kom tau raws li peb lub qhov rai sab nraud uas siv, PLC splitter kuj siv tau rau kev xa thiab kev tswj haujlwm ntau dua wavelength. Yog li PLC splitter hu ua puv-band splitter. Cov kev cai ntawm wavelength ntawm EPON thiab GPON cov qauv yog 13101490 thiab 1550nm, tus cim ntxiv PON txheem (xws li WDM-PON) yuav tsum muaj haujlwm ntau dua wavelength. Kev siv PLC cov twj paj nruag optical tuaj yeem hloov tau haum rau cov kev xav tau ntawm kev hloov tshiab yav tom ntej thiab kev txhim kho.