Emkhakheni wezokuxhumana, ukudluliswa kokuxhumana kukagesi kwezintambo zensimbi kukhawulelwe kakhulu ngenxa yezinto ezinjengokuphazamiseka kazibuthe kagesi, i-inter-code crosstalk nokulahlekelwa, kanye nezindleko zezintambo.
Ngenxa yalokho, ukudluliselwa kwe-optical kwazalwa. Ukudluliswa kwe-Optical kunezinzuzo ze-bandwidth ephezulu, umthamo omkhulu, ukuhlanganiswa okulula, ukulahlekelwa okuphansi, ukuhambisana okuhle kwe-electromagnetic, akukho crosstalk, isisindo esincane, usayizi omncane, njll.
Isakhiwo esiyisisekelo semojula ye-optical
Phakathi kwazo, imojula ye-optical iyithuluzi eliyinhloko ekudluliseni i-fiber optical, futhi izinkomba zayo ezihlukahlukene zinquma ukusebenza okuphelele kokudluliselwa. Imojula ye-optical iyisithwali esisetshenziselwa ukudlulisa phakathi kweshintshakanye nedivayisi, futhi umsebenzi wayo oyinhloko ukuguqula isignali kagesi yedivayisi ibe isignali yokubona ekugcineni kokudlulisela. Isakhiwo esiyisisekelo siqukethe izingxenye ezimbili: "ingxenye ekhipha ukukhanya kanye nesekethe yayo yokushayela" kanye "nengxenye yokwamukela ukukhanya kanye nesekhethi yokwamukela".
Imojula ye-optical iqukethe amashaneli amabili, okuyisiteshi sokudlulisa kanye nesiteshi sokwamukela.
Ukwakheka kanye nomgomo wokusebenza wesiteshi esithumelayo
Isiteshi sokudlulisa semodule ye-optical sakhiwe isixhumi esibonakalayo sokufaka isignali kagesi, i-laser drive circuit, i-impedance match circuit kanye ne-laser component TOSA.
Umgomo wayo wokusebenza ukufakwa kwesixhumi esibonakalayo sikagesi sesiteshi sokudlulisa, ukuhlangana kwesiginali kagesi kuqedwa ngesekethe yesixhumi esibonakalayo sikagesi, bese kuthi isekethe yokushayela nge-laser esiteshini sokudlulisa iguqulwe, bese kusetshenziselwa ingxenye yokufanisa i-impedance. ukufanisa ukuqedela ukuguquguquka nokushayela kwesignali, futhi ekugcineni Thumela ukuguqulwa kwe-laser (TOSA) electro-optical ibe isignali yokubona yokudlulisa isignali yokubona.
Ukwakheka kanye nomgomo wokusebenza wesiteshi esamukelayo
Isiteshi sokwamukela imojula ye-optical siqukethe ingxenye ye-optical detector i-ROSA (eyakhiwe nge-photodetection diode (PIN), i-transimpedance amplifier (TIA)), isekethe yokufanisa i-impedance, isekethe ye-amplifier ekhawulela kanye nesekethe yokuphuma kwesignali kagesi.
Umgomo wayo wokusebenza ukuthi i-PIN iguqula isignali ye-optical eqoqiwe ibe isignali kagesi ngendlela elinganayo. I-TIA iguqula lesi signali kagesi ibe isignali kagesi, futhi ikhulise isignali kagesi eguquliwe iye ku-amplitude edingekayo, futhi iyidlulisele kumkhawulo ngokusebenzisa isekethe yokufanisa i-impedance Isekethe ye-amplifier iqedela ukukhulisa kabusha kanye nokubunjwa kabusha kwesiginali, ithuthukise isignali- isilinganiso somsindo, kunciphisa izinga lephutha elincane, futhi ekugcineni isekethe yesixhumi esibonakalayo sikagesi iqeda ukuphuma kwesignali.
Ukusetshenziswa kwe-optical module
Njengedivayisi eyinhloko yokuguqulwa kwe-photoelectric ekuxhumaneni okubonakalayo, amamojula abonakalayo asetshenziswa kakhulu ezikhungweni zedatha. Izikhungo zedatha yendabuko ikakhulukazi zisebenzisa i-1G/10G amamojula e-low-speed optical, kuyilapho izikhungo zedatha yamafu ikakhulukazi zisebenzisa amamojula we-40G/100G esivinini esikhulu. Ngezimo ezintsha zohlelo lokusebenza ezifana nevidiyo enencazelo ephezulu, ukusakazwa bukhoma, kanye ne-VR eqhuba ukukhula okusheshayo kwethrafikhi yenethiwekhi yomhlaba wonke, ngokuphendula amathrendi entuthuko yesikhathi esizayo, izidingo ezikhulayo zezinhlelo zokusebenza ezifana ne-cloud computing, amasevisi e-Iaa S, kanye nedatha enkulu kubeka izidingo eziphezulu. esikhungweni sedatha ukudluliswa kwedatha yangaphakathi , Okuzozala amamojula abonakalayo anamazinga aphezulu okudlulisela esikhathini esizayo.
Ngokuvamile, lapho sikhetha amamojula okubona, sicabangela ikakhulukazi izici ezifana nezimo zohlelo lokusebenza, izidingo zesilinganiso sokudluliswa kwedatha, izinhlobo zokusebenzelana, namabanga okudlulisa amehlo (imodi ye-fiber, amandla okubona adingekayo, ubude begagasi obumaphakathi, uhlobo lwe-laser) nezinye izici.