Tilmaamayaasha modulator-ka Mach-Zehnder

TilmaamayaashaMach-Zehnder modulator

Qalabka Mach-Zehnder Modulator (oo loo soo gaabiyo sidaQaabeeyaha MZM) waa aalad muhiim ah oo loo isticmaalo in lagu gaaro habaynta calaamadaha indhaha ee dhinaca isgaarsiinta indhaha. Waa qayb muhiim ah oo ka mid ahModulator-ka Korontada-Optic-ga, iyo tilmaamayaasha waxqabadkoodu waxay si toos ah u saameeyaan hufnaanta gudbinta iyo xasilloonida nidaamyada isgaarsiinta. Soo socda waa hordhac ku saabsan tilmaamayaasha ugu muhiimsan:

Xuduudaha indhaha

1. Ballaca 3dB: Waxay tilmaamaysaa baaxadda soo noqnoqoshada marka baaxadda calaamadda wax soo saarka ee modulator-ku hoos u dhacdo 3dB, iyadoo cutubku yahay GHz. Ballaca badan, ayaa sii kordhaya heerka gudbinta calaamadaha la taageerayo. Tusaale ahaan, ballac 90GHz ah ayaa taageeri kara gudbinta calaamadaha 200Gbps PAM4.

2. Saamiga dabar-goynta (ER): Saamiga awoodda ugu badan ee wax soo saarka indhaha iyo awoodda ugu yar ee indhaha, oo leh cutubka dB. Inta ay sii badan tahay saamiga dabar-goynta, ayaa kala duwanaanshaha u dhexeeya "0" iyo "1" ee calaamadda, iyo awoodda ka hortagga buuqa oo sii xoogaysanaysa.

3. Lumitaanka gelinta: Lumitaanka korontada indhaha ee uu soo bandhigay modulator-ku, oo leh cutubka dB. Inta uu hoos u dhaco luminta gelinta, ayaa hufnaanta guud ee nidaamka ay sare u kacdaa.

4. Lumitaanka Soo Celinta: Saamiga awoodda iftiinka ee ka muuqata dhammaadka gelinta iyo awoodda iftiinka ee la gelinayo, oo leh cutubka dB. Lumitaanka soo celinta sare waxay yarayn kartaa saameynta iftiinka ka muuqda nidaamka.

Xuduudaha korontada

Danabka badh-hirka (Vπ): Danabka loo baahan yahay si loo soo saaro farqi 180° ah oo ku yimaada calaamadda indhaha ee wax soo saarka ee modulator-ka, oo lagu cabbiray V. Inta Vπ hoos u dhacdo, ayaa baahida danabka wadista ay yaraanaysaa, isticmaalka korontadana uu yaraanayaa.

2. Qiimaha VπL: Wax soo saarka danabka nus-hirka iyo dhererka modulator-ka, oo ka tarjumaya hufnaanta wax-ka-beddelka. Tusaale ahaan, VπL = 2.2V·cm (L=2.58mm) wuxuu matalaa danabka wax-ka-beddelka ee looga baahan yahay dherer gaar ah.

3. Danabka Dc eex: Waxaa loo isticmaalaa in lagu xasiliyo barta hawlgalka eemodulatorwaxayna ka hortagaan kala-baxa eexda ee ay keenaan arrimo ay ka mid yihiin heerkulka iyo gariirka.

Tilmaamayaasha kale ee muhiimka ah

1. Heerka xogta: Tusaale ahaan, awoodda gudbinta calaamadaha 200Gbps PAM4 waxay muujinaysaa awoodda isgaarsiinta xawaaraha sare leh ee uu taageero modulator-ka.

2. Qiimaha TDECQ: Tilmaame lagu cabbiro tayada calaamadaha la hagaajiyay, iyadoo cutubku yahay dB. Inta uu qiimaha TDECQ sareeyo, ayaa awoodda ka hortagga buuqa calaamadda sii xoogaysanaysa, heerka qaladka bit-kana hoos u dhacaya.

Soo Koobid: Waxqabadka modulator-ka Maarso-Zendl waxaa si buuxda u go'aamiya tilmaamayaasha sida bandwidth-ka indhaha, saamiga baabi'inta, luminta gelinta, iyo danab-badh-hir. Ballaca weyn, luminta gelinta hoose, saamiga baabi'inta sare iyo Vπ hooseeya waa astaamaha ugu muhiimsan ee modulators-ka waxqabadka sare leh, kuwaas oo si toos ah u saameeya heerka gudbinta, xasilloonida iyo isticmaalka tamarta ee nidaamyada isgaarsiinta indhaha.