Ukuze kuhlangatshezwane nesidingo sabantu esikhulayo solwazi, izinga lokudluliswa kwezinhlelo zokuxhumana nge-optical fiber liyanda usuku nosuku. Inethiwekhi yokuxhumana nge-optical yesikhathi esizayo izothuthukela kunethiwekhi yokuxhumana nge-optical fiber enesivinini esikhulu kakhulu, umthamo omkhulu kakhulu, ibanga elide kakhulu, kanye nokusebenza kahle kwe-spectrum ephezulu kakhulu. Umthumeli ubalulekile. Umthumeli wesignali ye-optical yesivinini esikhulu ikakhulukazi wakhiwe yi-laser ekhiqiza umthwali we-optical, idivayisi ekhiqiza isignali kagesi eshintshashintshayo, kanye ne-modulator ye-electro-optical yesivinini esikhulu eshintsha umthwali we-optical. Uma kuqhathaniswa nezinye izinhlobo zama-modulators angaphandle, ama-modulators e-lithium niobate electro-optical anezinzuzo zemvamisa yokusebenza ebanzi, ukuzinza okuhle, isilinganiso sokuphela okuphezulu, ukusebenza okuzinzile, izinga lokuguquguquka okuphezulu, i-chirp encane, ukuxhuma okulula, ubuchwepheshe bokukhiqiza obuvuthiwe, njll. Isetshenziswa kabanzi ezinhlelweni zokudlulisa i-optical zesivinini esikhulu, umthamo omkhulu, kanye nebanga elide.
I-voltage yesigamu-igagasi iyipharamitha ebaluleke kakhulu yomzimba ye-electro-optic modulator. Imelela ushintsho ku-voltage ye-bias ehambisana nokukhanya kokukhipha kwe-modulator ye-electro-optic kusuka kokuncane kuya kokuphezulu. Inquma i-modulator ye-electro-optic ngezinga elikhulu. Indlela yokukala ngokunembile nangokushesha i-voltage yesigamu-igagasi ye-modulator ye-electro-optic ibaluleke kakhulu ekwenzeni ngcono ukusebenza kwedivayisi kanye nokuthuthukisa ukusebenza kahle kwedivayisi. I-voltage yesigamu-igagasi ye-modulator ye-electro-optic ifaka phakathi i-DC (isigamu-igagasi).
i-voltage kanye ne-radiofrequency) i-voltage engamagagasi ayisithupha. Umsebenzi wokudlulisa we-electro-optic modulator umi kanje:
Phakathi kwazo kukhona amandla okukhipha optical e-electro-optic modulator;
Ingabe amandla okukhanya okufakwayo e-modulator;
Ingabe ukulahlekelwa kokufakwa kwe-electro-optic modulator;
Izindlela ezikhona zokulinganisa i-voltage ye-half-wave zifaka phakathi izindlela zokukhiqiza inani elidlulele kanye nokuphindaphinda imvamisa, ezingalinganisa i-voltage ye-half-wave voltage yamanje ngqo (DC) kanye ne-radio frequency (RF) ye-half-wave voltage ye-modulator, ngokulandelana.
Ithebula 1 Ukuqhathaniswa kwezindlela ezimbili zokuhlola i-voltage ye-half-wave
| Indlela yenani elidlulele | Indlela yokuphinda kabili imvamisa | |
| Imishini yelabhorethri | Ukunikezwa kwamandla nge-laser I-modulator yokuqina ingaphansi kokuhlolwa Ukunikezwa kwamandla kagesi kwe-DC okulungisekayo ±15V Imitha yamandla e-Optical | Umthombo wokukhanya we-laser I-modulator yokuqina ingaphansi kokuhlolwa Ukunikezwa kwamandla kagesi kwe-DC okulungisekayo I-Oscilloscope umthombo wesignali (I-DC Bias) |
| isikhathi sokuhlola | imizuzu engama-20() | imizuzu emi-5 |
| Izinzuzo zokuhlola | kulula ukukufeza | Ukuhlolwa okunembile kakhulu Ingathola i-DC half-wave voltage kanye ne-RF half-wave voltage ngasikhathi sinye |
| Izinkinga zokuhlola | Isikhathi eside nezinye izici, ukuhlolwa akunembile Ukuhlolwa okuqondile komgibeli we-DC i-half-wave voltage | Isikhathi eside kakhulu Izici ezifana nephutha elikhulu lokwahlulela ngokuphambuka kwesimo samagagasi, njll., ukuhlolwa akunembile |
Isebenza kanje:
(1) Indlela yenani elidlulele
Indlela ye-extreme value isetshenziswa ukukala i-DC half-wave voltage ye-electro-optic modulator. Okokuqala, ngaphandle kwesignali ye-modulation, i-transfer function curve ye-electro-optic modulator itholakala ngokulinganisa i-DC bias voltage kanye noshintsho lokukhanya okuphumayo, kanye ne-transfer function curve Nquma iphuzu lenani eliphezulu kanye nephuzu lenani eliphansi, bese uthola amanani e-DC voltage ahambisanayo i-Vmax kanye ne-Vmin ngokulandelana. Okokugcina, umehluko phakathi kwala manani amabili e-voltage yi-half-wave voltage Vπ=Vmax-Vmin ye-electro-optic modulator.
(2) Indlela yokuphinda kabili imvamisa
Bekusebenzisa indlela yokuphindaphinda imvamisa ukukala i-RF half-wave voltage ye-electro-optic modulator. Faka i-DC bias computer kanye nesignali ye-AC modulation ku-electro-optic modulator ngesikhathi esifanayo ukuze ulungise i-DC voltage lapho ukukhanya kokukhipha kushintshwa kube yinani eliphezulu noma elincane. Ngesikhathi esifanayo, futhi kungabonakala ku-dual-trace oscilloscope ukuthi isignali eguquliwe yokukhipha izovela i-frequency double distortion. Umehluko kuphela we-DC voltage ehambisana ne-frequency double distortion ezimbili eziseduze yi-RF half-wave voltage ye-electro-optic modulator.
Isifinyezo: Kokubili indlela yenani elidlulele kanye nendlela yokuphinda kabili imvamisa kungalinganisa ngokomqondo i-voltage ye-half-wave ye-electro-optic modulator, kodwa uma kuqhathaniswa, indlela yenani elinamandla idinga isikhathi eside sokulinganisa, futhi isikhathi eside sokulinganisa sizoba ngenxa yamandla okukhipha optical e-laser ayashintshashintsha futhi abangele amaphutha okulinganisa. Indlela yenani elidlulele idinga ukuskena i-DC bias ngenani elincane lesinyathelo bese iqopha amandla okukhipha optical e-modulator ngesikhathi esifanayo ukuthola inani le-voltage ye-half-wave ye-DC enembile kakhudlwana.
Indlela yokuphinda kabili imvamisa iyindlela yokunquma i-voltage ye-half-wave ngokubheka i-frequency doubling waveform. Lapho i-voltage ye-bias esetshenzisiwe ifinyelela inani elithile, kwenzeka ukuphazamiseka kokuphindaphinda kwemvamisa, futhi ukuphazamiseka kwe-waveform akubonakali kakhulu. Akulula ukukubona ngeso lenyama. Ngale ndlela, kuzobangela amaphutha amakhulu ngokungenakugwenywa, futhi lokho ekukalayo i-RF half-wave voltage ye-electro-optic modulator.