Ukuze kuhlangatshezwane nesidingo esikhulayo sabantu solwazi, izinga lokudluliselwa kwezinhlelo zokuxhumana ze-optical fiber liyakhula usuku nosuku. Inethiwekhi yokuxhumana yesikhathi esizayo izothuthukela kunethiwekhi yokuxhumana nge-fiber optical enesivinini esiphezulu, umthamo omkhulu kakhulu, ibanga elide kakhulu, kanye nokusebenza kahle kwe-spectrum ephezulu kakhulu. I-transmitter ibalulekile. I-transmitter yesignali ye-optical enesivinini esiphezulu yakhiwa ikakhulukazi i-laser ekhiqiza inkampani yenethiwekhi yokubona, idivayisi ekhiqiza isignali kagesi emodulayo, kanye nemoduli ye-electro-optical enesivinini esikhulu eshintsha inkampani yenethiwekhi yokubona. Uma kuqhathaniswa nezinye izinhlobo zama-modulators angaphandle, ama-modulators e-lithium niobate electro-optical anezinzuzo zokuvama kokusebenza okubanzi, ukuzinza okuhle, isilinganiso sokuqothulwa okuphezulu, ukusebenza okuzinzile kokusebenza, izinga eliphezulu lokuguquguquka, ukutshiyoza okuncane, ukuhlanganisa okulula, ubuchwepheshe bokukhiqiza obuvuthiwe, njll. Isetshenziswa kabanzi ku-high-speed, umthamo omkhulu, kanye nezinhlelo zokudlulisa amehlo isikhathi eside o.
I-voltage yesigamu-wave iyipharamitha ebaluleke kakhulu ye-electro-optic modulator. Imele ushintsho ku-voltage echema ehambisana nokuqina kokukhanya kwe-electro-optic modulator ukusuka kwencane ukuya kwephezulu. Inquma i-electro-optic modulator ngezinga elikhulu. Indlela yokulinganisa ngokunembile nangokushesha i-voltage enguhafu yegagasi yemoduli ye-electro-optic ibaluleke kakhulu ekuthuthukiseni ukusebenza kwedivayisi nokuthuthukisa ukusebenza kahle kwedivayisi. I-voltage enguhhafu yegagasi yemoduli ye-electro-optic ifaka phakathi i-DC (half-wave
i-voltage ne-radiofrequency) i-half-wave voltage. Umsebenzi wokudlulisa we-electro-optic modulator imi kanje:
Phakathi kwazo kukhona amandla optical okukhipha we-electro-optic modulator;
Ingabe amandla okokufaka optical wemoduli;
Ingabe ukulahlekelwa kokufaka kwe-electro-optic modulator;
Izindlela ezikhona zokukala i-voltage enguhhafu wamagagasi zifaka ukukhiqizwa kwenani elidlulele nezindlela zokuphindaphinda imvamisa, ezingakala i-voltage eqondile yamanje (DC) yesigamu-amagagasi kanye nefrikhwensi yomsakazo (RF) i-half-wave voltage ye-modulator, ngokulandelanayo.
Ithebula 1 Ukuqhathaniswa kwezindlela ezimbili zokuhlola i-half-wave voltage test
| Indlela yenani eliphakeme kakhulu | Indlela yokuphinda kabili imvamisa | |
| Imishini yaselabhorethri | Ukunikezwa kwamandla nge-laser Ukuqina kwemoduli ngaphansi kokuhlolwa Ukunikezwa kwamandla kwe-DC okulungisekayo ±15V Imitha yamandla okubona | Umthombo wokukhanya we-Laser Ukuqina kwemoduli ngaphansi kokuhlolwa Ukunikezwa kwamandla kwe-DC okulungisekayo I-Oscilloscope umthombo wesignali (Ukuchema kwe-DC) |
| isikhathi sokuhlola | 20min() | 5 imiz |
| Izinzuzo zokuhlola | kulula ukufeza | Ukuhlolwa okunembile ngokuqhathaniswa Ingathola i-DC half-wave voltage kanye ne-RF half-wave voltage ngesikhathi esifanayo |
| Ukungalungi kokuhlola | Isikhathi eside nezinye izici, ukuhlolwa akulona iqiniso Ukuhlola umgibeli oqondile we-DC i-half wave voltage | Isikhathi eside uma kuqhathaniswa Izinto ezifana nephutha elikhulu lokwahlulela lokuhlanekezelwa kwe-waveform, njll., ukuhlolwa akulona iqiniso |
Isebenza kanje:
(1) Indlela yenani eliphezulu kakhulu
Indlela yenani elidlulele isetshenziswa ukukala i-DC ye-half wave voltage ye-electro-optic modulator. Okokuqala, ngaphandle kwesignali yokushintshashintsha, ijika lomsebenzi wokudlulisa wemoduli ye-electro-optic itholakala ngokulinganisa i-DC yokuchema kwe-DC kanye nokushintsha kokuqina kokukhanya okukhiphayo, futhi kusukela ejikeni lomsebenzi wokudlulisa Thola iphuzu lenani eliphakeme kanye nephoyinti yenani elincane, futhi uthole amanani ahambisanayo ka-DC voltage Vmax ne-Vmin ngokulandelanayo. Okokugcina, umehluko phakathi kwalawa manani kagesi amabili i-voltage enguhafu yegagasi i-Vπ=Vmax-Vmin yemoduli ye-electro-optic.
(2) Indlela yokuphindaphinda imvamisa
Besisebenzisa indlela yokuphinda kabili imvamisa ukukala i-RF half-wave voltage yemodulator ye-electro-optic. Engeza ikhompuyutha echema i-DC kanye nesignali yokumoduliza ye-AC kusimodeli se-electro-optic ngesikhathi esifanayo ukuze ulungise i-voltage ye-DC lapho amandla okukhanya okukhiphayo ashintshwa abe inani eliphezulu noma eliphansi. Ngesikhathi esifanayo, futhi kungabonwa ku-double-trace oscilloscope ukuthi isignali eshintshiwe yokukhishwa izovela ukuhlanekezela okuphindwe kabili. Umehluko kuphela we-DC voltage ohambisana nokuhlanekezelwa okuphindwe kabili kwefrikhwensi okubili i-RF half-wave voltage yemodulator ye-electro-optic.
Isifingqo: Kokubili indlela yenani elidlulele kanye nendlela yokuphindaphinda imvamisa ingakala ngokwethiyori i-voltage enguhafu yegagasi lemoduli ye-electro-optic, kodwa uma kuqhathaniswa, indlela yenani elinamandla idinga isikhathi sokulinganisa eside, futhi isikhathi eside sokulinganisa sizoba ngenxa Amandla okukhiphayo okukhipha i-laser ayashintshashintsha futhi abangele amaphutha okulinganisa. Indlela yenani elidlulele idinga ukuskena ukuchema kwe-DC ngenani lesinyathelo esincane futhi irekhode amandla okubona okukhiphayo wemoduli ngesikhathi esifanayo ukuze kutholwe inani elinembe kakhudlwana le-DC ye-DC ye-half-wave voltage.
Indlela yokuphindaphinda imvamisa iyindlela yokunquma i-voltage engamagagasi angamahafu ngokubheka ifomethi yegagasi ephindwe kabili. Lapho i-voltage ye-bias esetshenzisiwe ifinyelela inani elithile, ukuhlanekezela ukuphindaphinda kwemvamisa kwenzeka, futhi ukuhlanekezela kwe-waveform akubonakali kakhulu. Akulula ukukubuka ngeso lenyama. Ngale ndlela, nakanjani izodala amaphutha abaluleke kakhulu, futhi lokho ekulinganisayo amandla kagesi we-RF half-wave wemoduli ye-electro-optic.