Txhawm rau ntsib cov neeg xav tau ntau dua rau cov ntaub ntawv, tus nqi kis tus nqi ntawm kho qhov sib txuas lus fiber ntau yog nce hnub los ntawm ib hnub. Lub neej yav tom ntej kev sib txuas lus sib txuas lus lub network yuav tsim kho cov kev sib txuas lus kho mob fiber ntau nrog ultra-loj muaj peev xwm, ultra-ntev ntev, thiab ultra-siab spectrum efficiency. Lub transmitter yog qhov tseem ceeb. Lub High-Speedical teeb liab teeb liab yog suav nrog ib lub laser uas tsim cov khoom siv hluav taws xob tsim kho, thiab cov khoom siv hluav taws xob hloov kho qhov muag uas tau kho qhov muag. Piv nrog lwm hom kev hloov kho sab nraud, lithium niobate electro-kev ua haujlwm zoo, yooj yim chirp, yooj yim sib txuas tshuab, thiab lwm yam nws yog dav siv nyob rau hauv kev kub ceev, loj-muaj peev xwm, thiab ntev-chanectical kis cov tshuab.
Ib nrab-yoj voltage yog qhov tseem ceeb heev rau lub cev parameter ntawm electro-optic modulator. Nws sawv cev qhov kev hloov pauv hauv qhov tsis ncaj ncees rau kev siv rau cov zis teeb ntawm Electro-Optic modulator los ntawm qhov tsawg kawg nkaus rau qhov siab tshaj plaws. Nws txiav txim siab lub electro-optic modulator mus rau ib tug loj. Yuav ua li cas thiaj yog thiab sai sai ntsuas ib nrab-yoj voltage ntawm electro-optic tseem ceeb rau kev ua haujlwm zoo thiab txhim kho kev ua haujlwm ntawm lub cuab yeej. Ib nrab-yoj voltage ntawm electro-optic modulator suav nrog DC (ib nrab yoj
Voltage thiab radiofrequency) ib nrab-yoj voltage. Hloov chaw ua haujlwm ntawm electro-optic modulator yog raws li hauv qab no:
Ntawm lawv yog cov tso tawm kho qhov muag hluav taws xob ntawm electro-optic modulator;
Yog cov tswv yim kho qhov muag ntawm tus modulator;
Puas yog cov ntxig kev poob ntawm electro-optic modulator;
Cov hau kev uas twb muaj lawm rau ntsuas ib nrab-yoj voltage suav nrog cov txheej txheem ntau (DC) ib nrab yoj tes ntawm tus modulator, feem.
Cov lus 1 sib piv ntawm ob txoj kev ntsuas yoj ib nrab
| Tus Muaj Nqis Tus Qauv | Zaus Li Casling Txoj Kev | |
| Kuaj cov khoom | Laser Fais Fab Khoom Kev siv cov qauv hloov kho hauv qhov ntsuas Adjustable DC Fais Fab Khoom Siv ± 15V Kev ntsuas qhov hluav taws xob kho qhov muag | Laser Lub Teeb Kev siv cov qauv hloov kho hauv qhov ntsuas Adjustable DC Fais Fab Oscilloscope Teeb phiaj (DC Bias) |
| Lub sijhawm kuaj | 20min () | 5min |
| Kev sim ua kom zoo | Yooj yim ua tiav | Kuj tau kuaj qhov raug Tuaj yeem tau txais DC ib nrab-yoj voltage thiab RF ib nrab-yoj voltage nyob rau tib lub sijhawm |
| Sim ua tsis zoo | Ntev ntev thiab lwm yam, qhov kev ntsuas tsis raug Ncaj qha Cov Neeg Caij Tus Civ Mus Dc Ib Nrab-Wave Voltage | Ntev ntev Yam xws li cov nthwv dej loj txaus ntshai kev txiav txim siab yuam kev, thiab lwm yam, qhov kev ntsuas tsis yog |
Nws ua haujlwm li nram no:
(1) cov qauv muaj nuj nqis heev
Cov txheej txheem muaj txiaj ntsig heev yog siv los ntsuas DC ib nrab-yoj voltage ntawm electro-optic modulator. Ua ntej, tsis muaj teeb liab teeb liab, hloov chaw ua haujlwm nkhaus ntawm cov khoom siv hluav taws xob electro-expulator tau txiav txim siab tus nqi siab tshaj plaws Tau txais cov DC voltage values vmax thiab vmin feem ntau. Thaum kawg, qhov sib txawv ntawm ob lub voltage values yog ib nrab-yoj volage vπ = vmax-vmin ntawm Electro-Optic Modulator.
(2) Cov Txheej Txheem Sib Tw
Nws tau siv cov zaus doubling txoj kev los ntsuas RF ib nrab-yoj voltage ntawm electro-optic modulator. Ntxiv rau DC kev tsis muaj teeb meem thiab AC kev teeb tsa lub teeb liab thiab ACC kev teeb tsa lub npe Electro-Optic hloov kho lub teeb kom hloov pauv mus rau qhov siab tshaj plaws lossis tus nqi tsawg kawg nkaus. Nyob rau tib lub sijhawm, thiab nws tuaj yeem pom nyob rau ntawm ob kab ntawv OSCilloscope tias cov zis tau cov cim qhia tau ntau npaum li cas. Qhov sib txawv nkaus xwb ntawm DC voltage sib haum rau ob qho chaw nyob ib leeg doubling distortions yog RF ib nrab-yoj voltage ntawm electro-optic modulator.
Cov ntsiab lus: Ob qho kev ntsuas tus nqi heev thiab cov kev ntsuas hluav taws xob tau ntsuas qhov ntsuas hluav taws xob ib nrab, thiab lub sijhawm ntsuas ntev dua yuav yog vim Cov tso zis kho qhov muag hluav taws xob ntawm cov laser hloov thiab ua rau cov kev ntsuas tsis raug. Cov nqi muaj nuj nqis heev yuav tsum tau luam theej duab DC Bias nrog tus nqi me me thiab sau cov tso zis tawm ntawm lub zog me me thiab sau cov dc ib nrab-yoj voltage tus nqi.
Cov Nqes Tes Ua Phooj Ywg yog ib txoj kev txiav txim siab ntawm ib nrab yoj hluav taws xob los ntawm kev soj ntsuam cov zaus doubling Werverform. Thaum cov ntawv thov bias tau mus txog ib tus nqi, ua kom muaj zog sib zog tshwm sim, thiab cov wervigform distortion tsis yog qhov tseem ceeb. Nws tsis yooj yim los soj ntsuam nrog lub qhov muag liab qab. Nyob rau hauv txoj kev no, nws yuav inevitably ua rau muaj qhov yuam kev ntau dua, thiab kev ntsuas nws yog yoj ib nrab-yoj voltage ntawm electro-optic modulator.