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 zamamojula angaphandle, i-lithium niobate electro-optical modulators inezinzuzo zemvamisa yokusebenza ebanzi, ukuzinza okuhle, isilinganiso sokuqothulwa okuphezulu, ukusebenza okuzinzile kokusebenza, izinga eliphezulu lokuguquguquka, ukutshiyoza okuncane, ukuhlanganisa okulula, ubuchwepheshe bokukhiqiza obuvuthiwe, njll. isetshenziswa kakhulu ezinhlelweni zokudlulisa amehlo ezihamba ngesivinini esikhulu, ezinkulu, kanye nebanga elide.
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 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 I-intensity modulator ngaphansi kokuhlolwa Ukunikezwa kwamandla kwe-DC okulungisekayo ±15V Imitha yamandla okubona | Umthombo wokukhanya we-Laser I-intensity modulator 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 eliphakeme kakhulu
Indlela yenani elidlulele isetshenziswa ukukala i-DC ye-half wave voltage ye-electro-optic modulator. Okokuqala, ngaphandle kwesignali yokushintshashintsha, ijika lomsebenzi wokudlulisa we-electro-optic modulator itholwa ngokulinganisa i-DC bias voltage kanye noshintsho lokuqina kokukhanya okukhiphayo, futhi kusukela ejikeni lomsebenzi wokudlulisa Thola iphuzu lenani eliphakeme kanye nephuzu lenani elincane, futhi thola amanani kagesi we-DC ahambisanayo i-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.
Kafushane: Kokubili indlela yenani elidlulele kanye nendlela yokuphinda kabili imvamisa ngokwethiyori ingakala ugesi oyingxenye yegagasi lemoduli ye-electro-optic, kodwa uma kuqhathaniswa, indlela yenani elinamandla idinga isikhathi sokulinganisa eside, futhi isikhathi eside sokulinganisa sizobangelwa Amandla okukhanya okukhiphayo we-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.