Hababka tijaabada ee waxqabadka modulator-ka elektiroonigga ah

Hababka tijaabada ee waxqabadkamodulator-ka-elektrooniga

1. Tallaabooyinka tijaabada korantada nuska ah ee loogu talagalaymodulator-ka xoogga korontada

Qaadashada tamarta nus-mawjadaha ee terminalka RF tusaale ahaan, isha ishaarada, aaladda tijaabada iyo oscilloscope-ku waxay ku xidhan yihiin aalad saddex geesood ah. Markaad tijaabinayso korantada-mawjada badhkeed ee terminalka Bias, ku xidh si waafaqsan xariiqda dhibcaha leh.

b. Daar isha iftiinka iyo isha ishaarada, oo mari signalka mowjadda sawtooth (inta jeer ee tijaabada caadiga ah waa 1KHz) qalabka lagu tijaabinayo. Calaamada mowjadda mowjadda sawtooth ee Vpp waa in ay ka weyn tahay laba jeer danabka hirarka nuska ah.

c. Daar oscilloscope;

d. Calaamadda wax-soo-saarka ee qalabka wax-sheeguhu waa calaamadda cosine. Diiwaangeli qiyamka danabka mowjadda ilka-qaadka ee V1 iyo V2 ee u dhiganta meelaha ugu sarreeya iyo biyo-mareennada ku xiga ee calaamaddan. e. Xisaabi korantada mawjada badhkeed sida ku cad Formula (3).

2. Tijaabi tillaabooyinka loogu talagalay danab-mawjadaha nuska ah eemodulator wejiga elektro-optic

Ka dib marka la isku xiro nidaamka tijaabada, farqiga jidka indhaha ee u dhexeeya labada gacmood ee sameeya qaab dhismeedka interferometer indhaha waa inuu ku jiraa dhererka isku xirnaanta. Isha ishaarada iyo terminalka RF ee aaladda tijaabada lagu jiro iyo sidoo kale kanaalka 1 ee oscilloscope waxay ku xidhan yihiin aalad saddex geesood ah. Ka dib marka la isku xiro nidaamka tijaabada, farqiga jidka indhaha ee u dhexeeya labada gacmood ee sameeya qaab dhismeedka interferometer indhaha waa inuu ku jiraa dhererka isku xirnaanta. Isha signalka iyo terminalka RF ee aaladda tijaabada lagu jiro iyo sidoo kale kanaalka 1 ee oscilloscope waxay ku xidhan yihiin aalad saddex-gees ah, iyo dekedda wax gelinta ee oscilloscope-ka ayaa lagu hagaajiyaa xaalad kacsanaan sare leh.

b. Daar laysarka iyo isha ishaarada, oo mari calaamada mowjadda mowjadda ilka-tooth ee soo noqnoqoshada go'an (qiimaha caadiga ah 50KHz) qalabka lagu tijaabinayo. Calaamadda wax-soo-saarka ee qalabka wax-sheeguhu waa calaamadda cosine. Vpp-ka calaamada hirarka mowjadda sawtooth waa in uu ka badan yahay laba jeer korantada-mawjadda nuska ah, laakiin aan ka badnayn kala duwanaanshaha korantada galitaanka ee uu cayimay modulator-ka, si ay calaamadda cosine-ka soo-saarku u soo bandhigto ugu yaraan hal wareeg oo dhammaystiran.

c. Diiwaangeli qiyamka danabka mowjadda ilka-qaadka ee V1 iyo V2 ee u dhiganta meelaha ugu sarreeya iyo weelasha ku xiga ee calaamadda cosine;

d. Xisaabi korantada mawjada badhkeed sida ku cad Formula (3).

3. Gelida luminta modulators electro-optic

Tijaabi talaabooyinka

Kadib markaad isku xidho isha iftiinka iyo polarizer-ka, shid isha iftiinka oo tijaabi galinta awooda indhaha ee Pi ee aaladda tijaabada mitirka awooda indhaha.

b. Ku xidh aaladda tijaabada ku jirta nidaamka tijaabada, oo ku xidh xidhidhka wax soo saarka ee sahayda laydhka ee la habeeyey biinanka 1 (GND) iyo 2(Bias)modulatore(qaar ka mid ah qaybo ka mid ah modulators, pin 1 ee modulator-ka ayaa sidoo kale u baahan in lagu xiro guriga).

c. Hagaajin tamarta wax soo saarka ee sahayda laydhka ee habaysan oo tijaabi akhrinta ugu badan ee mitirka korantada indhaha sida Pout.

d. Haddii qalabka lagu tijaabinayo uu yahay modulator wejiga, looma baahna in lagu daro korontada xasilinta tamarta. Pout waxaa si toos ah looga akhrin karaa mitirka korontada indhaha.

e. Xisaabi khasaaraha galinta sida ku cad Formula (1).

Ka taxadaritaan

a. Gelitaanka indhaha ee modulator-ka-electro-optic-ga waa in aanu dhaafin qiimaha cabbirka ee warbixinta tijaabada; haddii kale, eeEO modulatordhaawac ayaa soo gaari doona.

b. Gelitaanka RF ee modulator-ka elektiroonigga ah waa in aanu dhaafin qiimaha cabbirka ee xaashida tijaabada; haddii kale, modulator-ka EO wuu dhaawacmi doonaa.

c. Marka la samaynayo interferometer, waxaa jira shuruudo aad u sarreeya oo loogu talagalay deegaanka isticmaalka. Gariirka deegaanka iyo lulitaanka fiber indhaha ayaa labaduba saameyn ku yeelan kara natiijada baaritaanka.