IImodyuli kaMach-Zehnder(MZ Modulator) sisixhobo esibalulekileyo sokumodareyitha imiqondiso ye-optical esekelwe kumgaqo wokuphazamiseka. Umgaqo wayo wokusebenza umi ngolu hlobo lulandelayo: Kwisebe elifana ne-Y ekupheleni kokufakwayo, ukukhanya kwegalelo kwahlula ngamaza amabini okukhanya kwaye kungena iziteshi ezimbini ezihambelanayo ze-optical transmission ngokulandelanayo. Umjelo obonakalayo wenziwa ngezinto ze-electro-optic. Ngokuthatha inzuzo yempembelelo yayo ye-photoelectric, xa ukuguqulwa kombane owenziwe ngaphandle, isalathisi se-refractive sezinto zayo sinokutshintshwa, okubangelwa ukungafani kwendlela ye-optical phakathi kweendlela ezimbini zokukhanya ezifikelela kwisebe le-Y ekupheleni kokuphuma. Xa imiqondiso ye-optical kwimizila emibini ye-optical ifikelela kwisebe eline-Y ekupheleni kokuphuma, ukudibanisa kuya kwenzeka. Ngenxa yokulibaziseka kwesigaba esihlukeneyo sezibonakaliso ezimbini ze-optical, ukuphazamiseka kwenzeka phakathi kwabo, ukuguqula ulwazi lokwahlukana kwesigaba esithwalwa zizibonakaliso ezimbini ze-optical kwi-intensity information ye-output signal. Ke ngoko, umsebenzi wokumodareyitha imiqondiso yombane kubathwali be-optical unokufezekiswa ngokulawula iiparitha ezahlukeneyo zombane wokulayisha wemodyuli kaMatshi-Zehnder.
Iiparamitha ezisisiseko zeImodyuli yeMZ
Iiparamitha ezisisiseko ze-MZ Modulator zichaphazela ngokuthe ngqo ukusebenza kwemodyuli kwiimeko ezahlukeneyo zesicelo. Phakathi kwazo, iiparamitha ezibalulekileyo ze-optical kunye neerameters zombane zilandelayo.
Iiparamitha zokubona:
(1) I-bandwidth ye-Optical (i-3db bandwidth) : Uluhlu lwe-frequency xa i-frequency response amplitude iyancipha nge-3db ukusuka kwixabiso eliphezulu, kunye neyunithi ye-Ghz. I-Optical bandwidth ibonisa uluhlu lwamaza omqondiso xa imodareyitha isebenza ngokuqhelekileyo kwaye iyiparameter yokulinganisa ulwazi oluthwele umthamo womthwali obonakalayoimodyuli ye-electro-optic.
(2) I-Extinction ratio: Umlinganiselo weyona ndawo iphezulu yokuphuma kwamandla ombane yi-electro-optic modulator ukuya kumandla ombane amancinci, kunye neyunithi ye-dB. Umlinganiselo wokutshabalala yiparameter yokuvavanya amandla okutshintsha kwe-electro-optic yemodyuli.
(3) Ilahleko yokubuyisela: Umlinganiselo wamandla okukhanya abonakalisiweyo ekupheleni kwegaleloimodyulikwigalelo lamandla okukhanya, kunye neyunithi ye-dB. Ukubuyisela ilahleko yiparameter ebonisa amandla esiganeko abonakaliswe emva kumthombo wophawu.
(4) Ilahleko yokufaka: Umlinganiselo wesiphumo samandla optical kwigalelo lamandla optical wemodyuli xa ifikelela kumandla ayo aphezulu aphumayo, kunye neyunithi ibe yi-dB. Ilahleko yokufaka isalathiso esilinganisa ukulahleka kwamandla okukhanya okubangelwa ukufakwa kwendlela yokubona.
(5) Ubuninzi be-optical power input: Ngexesha lokusetyenziswa okuqhelekileyo, i-MZM Modulator igalelo lamandla optical kufuneka ibe ngaphantsi kweli xabiso ukukhusela umonakalo wesixhobo, kunye neyunithi ibe yi-mW.
(6) Ubunzulu bokumodareyitha: Ibhekisa kumlinganiselo wophawu lokumodareyitha amplitude kwi-amplitude yomthwali, edla ngokuchazwa njengepesenti.
Iiparamitha zombane:
Isiqingatha sombane wamaza: Ibhekisa kumahluko ombane ofunekayo ukuze amandla ombane okuqhuba atshintshe imodyuli ukusuka kwimeko evaliweyo ukuya kwimeko. Amandla ombane ophumayo we-MZM Modulator ahluka ngokuqhubekayo kunye nokutshintsha kombane we-bias. Xa imveliso yemodyuli ivelisa umahluko wesigaba se-180-degree, umahluko kwi-voltage ye-bias ehambelana neyona ndawo isezantsi ekufutshane kunye neyona ndawo iphakamileyo yi-voltage yesiqingatha-amaza, kunye neyunithi ye-V. Le parameter igqitywe ngezinto ezifana nezinto, isakhiwo kunye nenkqubo, kwaye iparameter engokwemveloImodyuli yeMZM.
(2) Ubuninzi bombane we-DC bias: Ngexesha lokusetyenziswa okuqhelekileyo, igalelo lombane we-bias we-MZM kufuneka ube ngaphantsi kweli xabiso ukuthintela umonakalo wesixhobo. Iyunithi yi-V. Umbane othambekele kwi-DC usetyenziselwa ukulawula imeko yemodyuli ecalanye ukuze ihlangabezane neemfuno ezahlukeneyo zokumodareyitha.
(3) Elona xabiso liphezulu lophawu lweRF: Ngexesha lokusetyenziswa kwesiqhelo, igalelo lombane weRF we-MZM kufuneka libe ngaphantsi kweli xabiso ukuthintela ukonakala kwesixhobo. Iyunithi yi-V. Isignali yefrikhwensi yerediyo luphawu lombane oluza kumodareyithwa kwisiphathi sombane.
Ixesha lokuposa: Jun-16-2025