Ukuhlangabezana nemfuno eyandayo yabantu yolwazi, izinga losulelo lweenkqubo zonxibelelwano lwefiber optical liyanda imihla ngemihla. Uthungelwano lwekamva lonxibelelwano olubonakalayo luya kuphuhlisa lusingise kuthungelwano lwefiber optical fiber enesantya esiphezulu, umthamo omkhulu kakhulu, umgama omde kakhulu, kunye nokusebenza kakuhle kwe-ultra-high spectrum. Isidluliseli sibalulekile. I-speed-speed optical signal transmitter ikakhulu yenziwe ngelaser eyenza i-optical carrier, i-modulating electronic signal generating device, kunye ne-high-speed electro-optical modulator eyenza i-optical carrier. Xa kuthelekiswa nezinye iintlobo zeemodyuli zangaphandle, iimodyuli ze-lithium niobate electro-optical modulators zineengenelo zokusebenza rhoqo rhoqo, uzinzo oluhle, umlinganiselo ophezulu wokuphela, ukusebenza okuzinzileyo, izinga eliphezulu lokumodareyitha, ukutshiyoza okuncinci, ukudibanisa lula, itekhnoloji yokuvelisa eqolileyo, njl. isetyenziswa kakhulu kwisantya esiphezulu, kwisakhono esikhulu, kunye neenkqubo zothumelo zamehlo omde.
Umbane wesiqingatha-amaza yiparamitha ebaluleke kakhulu yomzimba wemodyuli ye-electro-optic. Imele utshintsho kwi-voltage ye-bias ehambelana nokukhanya kokukhanya okuphumayo kwe-modulator ye-electro-optic ukusuka kwincinci ukuya phezulu. Imisela imodyuli ye-electro-optic ukuya kwinqanaba elikhulu. Indlela yokulinganisa ngokuchanekileyo kwaye ngokukhawuleza umbane wesiqingatha-amaza wemodyuli ye-electro-optic ibaluleke kakhulu ekuphuculeni ukusebenza kwesixhobo kunye nokuphucula ukusebenza kakuhle kwesixhobo. I-half-wave voltage ye-electro-optic modulator ibandakanya i-DC (isiqingatha-amaza
amandla ombane kunye ne-radiofrequency) isiqingatha sombane wamaza. Umsebenzi wokudluliselwa kwemodyuli ye-electro-optic umi ngolu hlobo lulandelayo:
Phakathi kwabo kuphuma amandla optical optical modulator electro-optic;
Ngaba igalelo lamandla optical wemodyuli;
Ngaba ilahleko yokufaka i-electro-optic modulator;
Iindlela ezikhoyo zokulinganisa amandla ombane wesiqingatha samaza ziquka ukuveliswa kwexabiso eligqithileyo kunye neendlela zokuphinda-phinda kabini, ezinokulinganisa amandla ombane akhoyo (DC) wesiqingatha samaza ombane kunye namaza ombane erediyo (RF) isiqingatha samaza ombane wemodyuli, ngokulandelelanayo.
Itheyibhile yoku-1 Uthelekiso lweendlela ezimbini zovavanyo lombane wesiqingatha samaza
| Indlela yexabiso eligqithisileyo | Indlela yokuphinda-phinda kabini | |
| Izixhobo zaselabhoratri | Ubonelelo lwamandla eLaser Imodyuli yokuqina phantsi kovavanyo Ubonelelo lwamandla oluhlengahlengiswayo lweDC ±15V imitha yamandla okukhanya | Umthombo wokukhanya weLaser Imodyuli yokuqina phantsi kovavanyo Unikezelo lwamandla olulungisekayo lweDC I-Oscilloscope umthombo wophawu (DC Bias) |
| ixesha lokuvavanya | 20min() | 5min |
| Iinzuzo zovavanyo | kulula ukuyifeza | Uvavanyo oluchanekileyo Unokufumana i-DC yesiqingatha-amaza ombane kunye ne-RF isiqingatha sombane wamaza ngaxeshanye |
| Ukungalungi kovavanyo | Ixesha elide kunye nezinye izinto, uvavanyo aluchanekanga Uvavanyo lomkhweli oluthe ngqo lwe-DC isiqingatha sombane wamaza | Ixesha elide ngokwentelekiso Izinto ezinje ngempazamo enkulu yokuguqulwa kwamaza, njl. njl., uvavanyo aluchanekanga |
Isebenza ngolu hlobo lulandelayo:
(1) Indlela yexabiso eligqithisileyo
Indlela yexabiso eligqithisileyo isetyenziselwa ukulinganisa i-DC isiqingatha-amaza ombane wemodyuli ye-electro-optic. Okokuqala, ngaphandle komqondiso wokumodareyitha, ijika lomsebenzi wokudlulisa imodyuli ye-electro-optic ifunyenwe ngokulinganisa i-DC bias voltage kunye nokutshintsha kokukhanya kokukhanya okuphumayo, kwaye ukusuka kwi-curve yomsebenzi wokudlulisa Ukumisela eyona ndawo yexabiso eliphezulu kunye neyona ndawo incinci yexabiso, kwaye fumana amaxabiso ombane we-DC ahambelanayo i-Vmax kunye ne-Vmin ngokulandelelanayo. Ekugqibeleni, umahluko phakathi kwala maxabiso mabini ombane yi-half-wave voltage Vπ=Vmax-Vmin ye-electro-optic modulator.
(2) Indlela yokuphinda-phinda kabini
Yayisebenzisa indlela yokuphinda-phinda kabini umlinganiselo wombane we-RF wesiqingatha samaza wemodyuli ye-electro-optic. Yongeza ikhompyuter ye-DC kunye ne-AC yokumodareyitha imodyuli kwimodyuli ye-electro-optic ngaxeshanye ukunyenyisa umbane we-DC xa ukukhanya okuphumayo kutshintshelwa kwelona xabiso liphezulu okanye lisezantsi. Kwangaxeshanye, kwaye kunokubonwa kwi-oscilloscope ye-double-trace ukuba isiphumo sophawu olumodareyithiweyo luya kuvela ukugqwetheka okuphindwe kabini. Umahluko ekukuphela kwawo wamandla ombane e-DC ongqamana nophambuko oluphindwe kabini olusondeleleneyo yi-RF yesiqingatha-amaza ombane wemodyuli ye-electro-optic.
Isishwankathelo: Zombini indlela yexabiso eligqithisileyo kunye nendlela yokuphinda-phinda kabini inokulinganisa isiqingatha sombane wesiqingatha sombane wemodyuli ye-electro-optic, kodwa ukuthelekisa, indlela yexabiso enamandla ifuna ixesha elide lokulinganisa, kwaye ixesha elide lokulinganisa liya kuba ngenxa Amandla okukhanya okuphumayo kwelaser aguquguquka kwaye abangele iimpazamo zokulinganisa. Indlela yexabiso eligqithisileyo idinga ukuskena i-DC bias ngexabiso elincinci lenyathelo kwaye urekhode amandla ombane ophumayo wemodyuli ngaxeshanye ukufumana ixabiso elichanekileyo le-DC elinesiqingatha sombane wombane.
Indlela yokuphinda-phindwe kabini yindlela yokumisela umbane wesiqingatha-amaza ngokujonga ukuphinda-phindeka kabini kweform yamaza. Xa i-voltage ye-bias esetyenzisiweyo ifikelela kwixabiso elithile, ukuphazamiseka kokuphindaphinda rhoqo kwenzeka, kwaye ukugqwesa kwe-waveform akubonakali kakhulu. Akulula ukujonga ngeliso lenyama. Ngale ndlela, ngokuqinisekileyo iya kubangela iimpazamo ezibaluleke ngakumbi, kwaye into elinganisa ngayo yi-RF half-wave voltage ye-electro-optic modulator.