Ho khahlametsa tlhokahalo e ntseng e eketseha ea batho ea tlhahisoleseling, sekhahla sa phetisetso ea litsamaiso tsa puisano tsa fiber e ntse e eketseha letsatsi le letsatsi. Marang-rang a nakong e tlang a puisano a tla nts'etsapele ho netweke ea puisano ea fiber e nang le lebelo le phahameng haholo, matla a maholo, sebaka se selelele haholo, le katleho e phahameng haholo ea mabone. Transmitter e bohlokoa. Transmitter ea lebelo le phahameng haholo e entsoe ka laser e hlahisang mochini o tsamaisang mahlo, sesebelisoa se hlahisang mats'oao a motlakase, le modulator ea lebelo le phahameng ea electro-optical e tsamaisang mochini oa optical. Ha ho bapisoa le mefuta e meng ea li-modulator tsa kantle, li-modulator tsa lithium niobate electro-optical modulators li na le melemo ea maqhubu a ts'ebetso e pharaletseng, botsitso bo botle, tekanyo e phahameng ea ho timela, ts'ebetso e tsitsitseng ea ts'ebetso, sekhahla se phahameng sa ho feto-fetoha ha molumo, ho lla ho nyane, ho kopanya habonolo, theknoloji ea tlhahiso e holileng, joalo-joalo. e sebelisoa haholo litsamaisong tsa phetiso ea lebelo le holimo, ea matla a maholo, le libakeng tse telele.
Half-wave voltage ke karolo ea bohlokoa haholo ea 'mele ea modulator ea electro-optic. E emela phetoho ea motlakase oa leeme e tsamaellanang le matla a khanya ea motlakase oa electro-optic ho tloha bonyane ho ea holimo. E etsa qeto ea modulator ea electro-optic ka tekanyo e kholo. Mokhoa oa ho lekanya ka nepo le ka potlako matla a halofo ea maqhubu a motlakase oa electro-optic ke oa bohlokoa haholo bakeng sa ho ntlafatsa ts'ebetso ea sesebelisoa le ho ntlafatsa ts'ebetso ea sesebelisoa. Half-wave voltage ea electro-optic modulator e kenyelletsa DC (half-wave
voltage and radiofrequency) halofo ea maqhubu a motlakase. Mosebetsi oa phetisetso ea electro-optic modulator o tjena:
E 'ngoe ea tsona ke matla a optical a hlahisoang ke motlakase oa electro-optic;
Na matla a optical a input a modulator;
Na tahlehelo ea ho kenya mochine oa electro-optic;
Mekhoa e teng ea ho lekanya halofo ea maqhubu a motlakase e kenyelletsa ho hlahisa boleng bo feteletseng le mekhoa ea ho imena habeli, e ka methang motlakase oa hona joale (DC) halofo ea maqhubu a motlakase le maqhubu a seea-le-moea (RF) halofo ea maqhubu a modulator, ka ho latellana.
Letlapa la 1 Papiso ea mekhoa e 'meli ea tlhahlobo ea motlakase oa halofo ea maqhubu
| Mokhoa oa boleng bo feteletseng | Mokhoa oa ho pheta-pheta habeli | |
| Lisebelisoa tsa laboratori | Phepelo ea matla a laser Modulator ea matla tlas'a teko Phepelo ea motlakase e feto-fetohang ea DC ± 15V Metara ea matla a optical | Mohloli oa leseli la laser Modulator ea matla tlas'a teko Phepelo ea motlakase e feto-fetohang ea DC Oscilloscope mohloli oa pontšo (Leeme la DC) |
| nako ea teko | 20min() | 5 mets |
| Melemo ea liteko | ho bonolo ho phetha | Teko e nepahetseng hantle E ka fumana motlakase oa halofo ea maqhubu a DC le RF half-wave voltage ka nako e le 'ngoe |
| Mefokolo ea liteko | Nako e telele le lintlha tse ling, tlhahlobo ha e nepahale Teko e tobileng ea bapalami ba DC halofo ea maqhubu a motlakase | Nako e batlang e le telele Lintlha tse joalo ka phoso e kholo ea ho sotha kahlolo ea waveform, joalo-joalo, tlhahlobo ha ea nepahala |
E sebetsa ka tsela e latelang:
(1) Mokhoa oa boleng bo feteletseng
Mokhoa o feteletseng oa boleng o sebelisoa ho lekanya DC halofo ea maqhubu a motlakase oa electro-optic modulator. Taba ea pele, ntle le lets'oao la ho feto-fetoha, phetisetso ea phetisetso ea modulator ea elektro-optic e fumanoa ka ho lekanya motlakase oa DC bias le phetoho ea matla a khanya ea tlhahiso, 'me ho tloha ho phetisetso ea phetisetso Fumana ntlha ea boleng bo holimo le ntlha ea boleng bo tlase, le fumana boleng ba motlakase oa DC Vmax le Vmin ka ho latellana. Qetellong, phapang pakeng tsa litekanyetso tsena tse peli tsa motlakase ke halofo ea wave voltage Vπ=Vmax-Vmin ea electro-optic modulator.
(2) Mokhoa oa ho pheta-pheta habeli
E ne e sebelisa mokhoa oa ho imena habeli ho lekanya motlakase oa RF half-wave oa electro-optic modulator. Eketsa khomphutha ea DC bias le lets'oao la ho feto-fetoha ha AC ho modulator ea electro-optic ka nako e le 'ngoe ho lokisa motlakase oa DC ha matla a khanya a hlahisoang a fetoloa ho boleng bo phahameng kapa bo tlase. Ka nako e ts'oanang, 'me ho ka hlokomeloa ho oscilloscope ea li-trace tse peli hore lets'oao le fetotsoeng le tla hlaha khafetsa habeli. Phapang e le 'ngoe feela ea motlakase oa DC o tsamaellanang le likhothatso tse peli tse haufi tse habeli ke RF half-wave voltage ea electro-optic modulator.
Kakaretso: Ka bobeli mokhoa oa boleng bo feteletseng le mokhoa oa ho pheta-pheta makhetlo a mabeli li ka lekanya motlakase oa halofo ea maqhubu a motlakase oa motlakase oa motlakase, empa ha ho bapisoa, mokhoa o matla oa boleng o hloka nako e telele ea ho lekanya, 'me nako e telele ea tekanyo e tla ba ka lebaka la Matla a optical a hlahisoang ke laser a fetoha 'me a baka liphoso tsa ho lekanya. Mokhoa o fetelletseng oa boleng o hloka ho lekola leeme la DC ka boleng bo nyane ba mohato le ho rekota matla a optical a tsoang ho modulator ka nako e ts'oanang ho fumana boleng bo nepahetseng haholoanyane ba DC half-wave voltage.
Mokhoa oa ho pheta-pheta habeli ke mokhoa oa ho khetholla motlakase oa halofo ea maqhubu ka ho shebella maqhubu a imenneng habeli. Ha motlakase oa leeme o sebelisitsoeng o fihla boleng bo itseng, ho khopamisoa ha makhetlo a mangata, 'me ho sotha ha waveform ha ho bonahale haholo. Ha ho bonolo ho shebella ka mahlo. Ka tsela ena, e tla baka liphoso tse kholo le ho feta, mme seo e se lekanyang ke RF half-wave voltage ea electro-optic modulator.