Keeb kwm
Nrog rau txoj kev loj hlob sai ntawm kev lag luam kev sib txuas lus thiab cov ntaub ntawv kis tau tus mob, muaj kev xav tau ntau dua rau kev ceev dua thiab kev sib kis ntev dua ntawm kev sib txuas lus kev sib txuas lus. Yog li ntawd, qee qhov kev siv thev naus laus zis tshiab tau tsim los ua kom tau raws li qhov kev thov no, xws li SWDM (Short-Wave Division Multiplex) thev naus laus zis.
SWDM Technology yog dab tsi
Nrog ib tug multi-mode fiber ntau, shortwave wavelength division multiplexing (SWDM) technology combines ob peb wavelengths nyob rau hauv lub fiber optic spectrum lub luv luv wavelength kawg, txog 850 nm (MMF). Qhov ntawd yog hais tias, tib lub npe nrov CWDM thev naus laus zis yog siv nyob rau hauv luv luv MMF systems.
Txhawm rau kom tau txais cov ntaub ntawv ntau dua, SWDM cov tshuab siv cov kab nruab nrab ntawm 850, 880, 910, thiab 940nm (30nm qhov sib nrug). Hauv kev xyaum, 40Gbps yog siv raws li 10Gpbs × 4λ thiab 100Gbps li 25Gbps × 4λ.
Structure of SWDM
SWDM thev naus laus zis yog tsim los ntawm ntau lub teeb pom kev sib cais uas tau muab tso ua ke rau hauv ib qho, tom qab ntawd hloov kho ntxiv los hloov cov yam ntxwv teeb liab. Qhov kev hloov kho feem ntau yog ua los ntawm optical multiplexer, thiab tag nrho cov teeb liab tau muab tso rau hauv ib qho kev kho qhov muag fiber ntau, yog li ua kom muaj peev xwm kis tau tus mob ntawm fiber ntau.
Vim Li Cas Peb Xaiv SWDM
SWDM thev naus laus zis tau siv dav hauv kev sib txuas lus kho qhov muag, vim nws muaj qhov zoo ntawm cov khoom siv me me, kev siv hluav taws xob tsawg, kev ua haujlwm zoo dispersion, tsis tshua muaj nqi, thiab muaj peev xwm. Piv nrog rau lwm yam kev siv tshuab optical kis tau tus mob, SWDM muaj cov yam ntxwv ntawm lub peev xwm loj, kev sib kis loj thiab tsis tshua muaj kev tawg, muab cov ntaub ntawv ntev thiab kev kub ceev xa mus rau kev sib txuas lus kho qhov muag.
Xaus
SWDM thev naus laus zis yog qhov kev sib txuas lus kho qhov muag zoo tshaj plaws, uas tuaj yeem txhim kho qhov sib kis tau zoo, ceev thiab muaj peev xwm ntawm kev sib txuas lus kho qhov muag. Cov cuab yeej siv tau zoo heev thiab muaj kev ntseeg tau zoo. Yog li ntawd, nws tau dhau los ua ntau thiab nrov hauv kev sib txuas lus kho qhov muag.