Izindlela zokuhlola ukusebenza kwe-electro-optic modulator

Izindlela zokuhlola ukusebenza kwei-electro-optic modulator

1. Izinyathelo zokuhlola i-voltage engamagagasi ayisithuphai-modulator yokuqina kwe-electro-optic

Uma sithatha i-voltage engamagagasi ayingxenye ku-terminal ye-RF njengesibonelo, umthombo wesignali, idivayisi evivinywayo kanye ne-oscilloscope kuxhunywe ngedivayisi enezindlela ezintathu. Uma uhlola i-voltage engamagagasi ayingxenye ku-terminal ye-Bias, yixhume ngokuya ngomugqa onamachashazi.

b. Vula umthombo wokukhanya kanye nomthombo wesignali, bese usebenzisa isignali yegagasi le-sawtooth (imvamisa evamile yokuhlola ingu-1KHz) kudivayisi evivinywayo. Isignali yegagasi le-sawtooth Vpp kufanele ibe ngaphezu kwe-voltage ephindwe kabili yegagasi lesigamu.

c. Vula i-oscilloscope;

d. Isignali yokukhipha ye-detector iyisignali ye-cosine. Qopha amanani e-voltage ye-sawtooth wave V1 kanye ne-V2 ahambisana neziqongo eziseduze kanye nezindawo zokudonsa zalesi signali. e. Bala i-voltage ye-half-wave ngokwe-Formula (3).

2. Izinyathelo zokuhlola i-voltage ye-half-wave yei-electro-optic phase modulator

Ngemva kokuxhuma uhlelo lokuhlola, umehluko wendlela yokukhanya phakathi kwezingalo ezimbili ezakha isakhiwo se-interferometer yokukhanya kumele ube ngaphakathi kobude bokuhambisana. Umthombo wesignali kanye ne-terminal ye-RF yedivayisi evivinywayo kanye nesiteshi 1 se-oscilloscope kuxhunywe ngedivayisi enezindlela ezintathu. Ngemva kokuxhuma uhlelo lokuhlola, umehluko wendlela yokukhanya phakathi kwezingalo ezimbili ezakha isakhiwo se-interferometer yokukhanya kumele ube ngaphakathi kobude bokuhambisana. Umthombo wesignali kanye ne-terminal ye-RF yedivayisi evivinywayo kanye nesiteshi 1 se-oscilloscope kuxhunywe ngedivayisi enezindlela ezintathu, futhi imbobo yokufaka ye-oscilloscope ilungiswa ibe yisimo sokumelana okuphezulu.

b. Vula umthombo we-laser kanye nesignali, bese usebenzisa isignali ye-sawtooth wave yemvamisa ethile (inani elijwayelekile elingu-50KHz) kudivayisi evivinywayo. Isignali yokuphuma kwe-detector iyisignali ye-cosine. I-Vpp yesignali ye-sawtooth wave kufanele ibe ngaphezu kwe-voltage ephindwe kabili ye-half-wave, kodwa ingadluli ububanzi be-voltage yokufaka obuchazwe yi-modulator, ukuze isignali ye-cosine yokuphuma ye-detector iveze okungenani umjikelezo owodwa ophelele.

c. Qopha amanani e-voltage ye-sawtooth wave V1 kanye ne-V2 ahambisana neziqongo eziseduze kanye nemigodi yesignali ye-cosine;

d. Bala i-voltage yesigamu-wamaza ngokwe-Formula (3).

3. Ukulahlekelwa ukufakwa kwama-modulators e-electro-optic

Izinyathelo zokuhlola

Ngemva kokuxhuma umthombo wokukhanya kanye ne-polarizer, vula umthombo wokukhanya bese uhlola i-Pi yamandla okukhanya okufakwayo yedivayisi evivinywayo ngemitha yamandla okukhanya.

b. Xhuma idivayisi evivinywayo ohlelweni lokuhlola, bese uxhumanisa amatheminali okukhiphayo kagesi olawulwayo kumaphini 1 (GND) kanye no-2(Bias) we-i-modulator(kwamanye amaqoqo ama-modulator, iphini 1 le-modulator nalo lidinga ukuxhunywa endlini).

c. Lungisa i-voltage yokuphuma kokunikezwa kwamandla okulawulwayo bese uhlola ukufundwa okuphezulu kwemitha yamandla okukhanya njenge-Pout.

d. Uma idivayisi evivinywayo iyi-phase modulator, asikho isidingo sokwengeza ugesi oqinisa amandla kagesi. I-Pout ingafundwa ngqo kusuka kumitha yamandla okukhanya.

e. Bala ukulahlekelwa kokufakwa ngokweFomula (1).

Izinyathelo zokuzivikela

a. Okokufaka okubonakalayo kwe-electro-optic modulator akumele kudlule inani lokulinganisa embikweni wokuhlola; ngaphandle kwalokho,I-modulator ye-EOkuzolimala.

b. Ukufakwa kwe-RF kwe-electro-optic modulator akumele kudlule inani lokulinganisa ephepheni lokuhlola; ngaphandle kwalokho, i-EO modulator izolimala.

c. Lapho usetha i-interferometer, kunezidingo eziphakeme kakhulu zendawo yokusetshenziswa. Ukushukuma kwemvelo kanye nokushukuma kwe-optical fiber kungathinta imiphumela yokuhlolwa.