Optical kev sib txuas lus txoj cai
Lub hauv paus ntsiab lus ntawm kev sib txuas lus yog raws li hauv qab no.Thaum kawg, cov ntaub ntawv xa mus (xws li lub suab) yuav tsum tau hloov dua siab tshiab rau hauv cov teeb liab hluav taws xob, thiab tom qab ntawd cov teeb liab hluav taws xob tau hloov mus rau lub teeb hluav taws xob uas tawm los ntawm lub laser (lub teeb ci), yog li ntawd. Qhov kev siv ntawm lub teeb sib txawv nrog lub amplitude (ntau zaus) ntawm cov teeb liab hluav taws xob thiab los ntawm lub hauv paus ntsiab lus ntawm tag nrho cov kev xav ntawm lub teeb, lub teeb liab optical kis tau nyob rau hauv optical fiber.Vim qhov poob thiab dispersion ntawm optical fiber, lub teeb liab optical yuav yog. attenuated thiab distorted tom qab kis mus rau ib tug deb. Lub teeb liab attenuated yog amplified ntawm optical repeater los kho qhov distorted waveform.Thaum qhov kawg tau txais, tus ntes tau txais cov teeb liab kho qhov muag thiab hloov mus rau hauv cov teeb liab hluav taws xob, uas yog demodulated los kho cov ntaub ntawv qub.
Optical fiber ntau kis tau zoo:
● Muaj peev xwm sib txuas lus loj, kev sib txuas lus ntev, siab rhiab heev, thiab tsis muaj kev cuam tshuam los ntawm lub suab nrov
● Me me, lub teeb yuag, lub neej ntev, zoo zoo thiab tus nqi qis
● Rwb thaiv tsev, kev kub siab ua haujlwm, kub kub, corrosion, muaj zog adaptability
● Kev ceev ceev heev
● Cov ntaub ntawv nplua nuj thiab tsis muaj peev xwm: Cov khoom siv tseem ceeb tshaj plaws rau kev ua quartz fiber ntau yog silica, uas yog xuab zeb, thiab xuab zeb yog abun.
Optical fiber kev sib txuas lus yog tsim los ntawm ib tug series ntawm optical kev sib txuas lus devices.dant nyob rau hauv cov xwm, yog li nws cov nqi yog qis dua.Optical li muab faib mus rau hauv active pab kiag li lawm thiab passive devices.Optical active ntaus ntawv yog ib tug tseem ceeb ntaus ntawv nyob rau hauv ib tug kho qhov muag kev sib txuas lus system converting ib hluav taws xob teeb liab mus rau hauv lub teeb liab kho qhov muag los yog hloov lub teeb liab kho qhov muag mus rau hauv lub teeb liab hluav taws xob, thiab yog lub plawv ntawm kev sib txuas lus kho qhov muag.Optical passive Cheebtsam yog cov khoom siv uas yuav tsum muaj qee lub zog hauv kev sib txuas lus kho qhov muag tab sis tsis muaj photoelectric lossis electro- optic conversion. Lawv yog cov nodes tseem ceeb ntawm optical kis systems, xws li fiber optic connectors, wavelength division multiplexers, optical splitters, thiab kho qhov muag.hloov. , optical circulators thiab optical isolators.
● Fiber optic thaj cords (tseem hu ua fiber optic connectors) xa mus rau lub connector plugs ntawm ob hnub ntawm lub cable rau kho qhov muag txoj kev active kev twb kev txuas.Lub plug ntawm ib kawg yog hu ua pigtail.
● Wavelength division multiplexer (WDM) sib txuas ua ke ntawm cov teeb liab kho qhov muag nrog cov wavelengths sib txawv thiab xa lawv raws li ib qho fiber ntau optical. Cov txheej txheem kev sib txuas lus nyob rau hauv uas optical signals ntawm txawv wavelengths sib cais los ntawm ib co txhais tau tias ntawm qhov kawg tau txais.
● Optical splitter (tseem hu ua splitter) yog ib qho khoom siv fiber ntau optic tandem nrog ntau yam khoom siv thiab ntau qhov kev tawm. PLC hom).
● Kho qhov muaghloovyog ib qho khoom siv kho qhov muag, uas yog ib qho khoom siv kho qhov muag nrog ib lossis ntau qhov kev xaiv kis tau tus mob ports. Nws txoj haujlwm yog rau lub cevhloovlos yog kev ua haujlwm ntawm cov teeb liab kho qhov muag hauv cov kab hluav taws xob kho qhov muag lossis kev sib txuas kho qhov muag.
● Cov khoom siv kho qhov muag yog ib qho khoom siv kho qhov muag uas muaj ntau qhov chaw nres nkoj uas tsis muaj kev cuam tshuam.
● Thaum lub teeb liab kho qhov muag tau tawm tswv yim los ntawm txhua qhov chaw nres nkoj, nws yog cov zis los ntawm qhov chaw nres nkoj tom ntej nrog qhov poob me me hauv kev txiav txim digital. Yog tias lub teeb liab tawm ntawm qhov chaw nres nkoj 1, nws tsuas tuaj yeem tso tawm los ntawm qhov chaw nres nkoj 2. Ib yam li ntawd, yog tias lub teeb liab tawm ntawm qhov chaw nres nkoj 2, nws tsuas tuaj yeem tso tawm los ntawm qhov chaw nres nkoj 3.
● Ib qho optical isolator yog ib qho khoom siv kho qhov muag uas tso cai rau lub teeb unidirectional tsuas yog hla thiab tiv thaiv kom tsis txhob hla mus rau qhov sib txawv. Nws txoj haujlwm ua haujlwm yog nyob ntawm qhov tsis sib xws ntawm Faraday kev sib hloov.