Okuvumelanayoukuxhumana okubonakalayo: isigaba sokukhanya
Ukuxhumana okuvumelanayo akuxhomekile nje kuphela ekutheni ukukhanya kukhanya kangakanani, kodwa futhi nokuthi isigaba sokukhanya sikuphi, futhi kusebenzisa ngisho nokuhlukaniswa okubili okuqondile. Ngale ndlela, ulwazi olwengeziwe lungafakwa ku-wavelength efanayo, futhi ibanga lokudlulisela nalo lingaba kude.
1, Umthombo wokukhanya ohambisanayo: i-laser eqhubekayo, kodwa idinga ukuzinza okwengeziwe
Umthombo wokukhanya ekuxhumaneni okuhlangene useyi-laser eqhubekayo ye-CW. Akuyona i-laser evunguzayo noma i-LED, kodwa umphumela oqhubekayo wokukhanya okuzinzile njengegagasi lokuthwala ukuze kuguqulwe okulandelayo. Uma kuqhathaniswa ne-CWumthombo wokukhanyakumamojula ajwayelekile e-optical afushane, kudinga izidingo eziphakeme. Isihluthulelo akukhona nje ukuthi amandla anele yini, kodwa futhi ukuthi imvamisa idinga ukuzinza nokuthi umsindo wesigaba udinga ukuba phansi. Ngakho-ke, imithombo yokukhanya ehambisanayo ingaqondwa 'njengereferensi ye-optical' ezinzile kakhudlwana. Kuseyi-laser eqhubekayo, kodwa idinga ukuzinza okuphezulu.
2, Ukuguqulwa okuvumelanayo: Akufani ne-modulator ye-EML
Isakhiwo se-EML singuI-laser ye-DFB+I-EAM electroabsorbent modulator. I-EAM inesibopho sokushintsha ubukhali bokumuncwa ukuze yenze ukukhanya okuphumayo kukhanye noma kube mnyama. Ngakho-ke, i-modulator ku-EML yenza kakhulu ukuguquguquka kobukhali. Ukuguquguquka okuvumelanayo kuhlukile. Ngokuvamile isebenzisaI-modulator ye-IQ. I-IQ modulator ayigcini nje ngokwenza ukukhanya kukhanye noma kube mnyama, kodwa ihlukanisa ukukhanya okuqhubekayo kube yizindlela ze-I ne-Q, ilawula izingxenye ezimbili zesigaba esiqondile eziqhelelene ngama-degree angu-90, bese ihlanganisa umphumela. Ngale ndlela, ukukhanya okuphumayo kungathwala kokubili ulwazi lwe-amplitude kanye nesigaba ngesikhathi esisodwa.
3, Ukususwa kwe-Coherent: ukusebenzisa ukukhanya kwe-oscillator yendawo ukufunda isigaba
I-PD evamile ingabona kuphela ukukhanya okukhulu futhi ayikwazi ukubona isigaba ngqo. Ukuze ufunde isigaba ngendlela ehambisanayo, kudingeka kufakwe umsebe wokubhekisela obizwa ngokuthi i-LO, i-laser ye-oscillator yendawo,. Ukuphela kokwamukela kuthumela ukukhanya kwesiginali okudlulisiwe kanye nokukhanya kwe-oscillator yendawo ku-optical mixer. Imisebe emibili yokukhanya iyaphazamisa, futhi umphumela wokuphazamiseka uhlobene nomehluko wesigaba phakathi kwayo. Ngemva kwalokho, i-balanced detector iguqula lo mphumela wokuphazamiseka ube isiginali kagesi. Ngokukhanya kwe-oscillator yendawo, ukuphela kokwamukela kunganquma ukuthi lokhu kukhanya kwesiginali kuvaliwe nge-engeli engakanani uma kuqhathaniswa nokukhanya kokubhekisela.
4. Indawo ku-AIDC: Ibanga elifushane lisabheka i-IM-DD, i-DCI ibheka kakhulu ukuhambisana
Indawo ecacile kakhulu yokuxhumana okuhlangene ezikhungweni zedatha ze-AI yi-DCI, okusho ukuthi i-Data Center Interconnection. Okusho ukuthi, ukuxhumana okusheshayo phakathi kwezikhungo zedatha, amapaki, kanye nangaphakathi kwezindawo zasemadolobheni.
Kodwa-ke, i-IM-DD isenezinzuzo zezindleko namandla ekuxhumaneni kwebanga elifushane ngaphakathi naphakathi kwamakhabethe. Amamojula e-optical ebanga elifushane angu-800G kanye no-1.6T asazosebenzisa kakhulu indlela efanayo ne-EML, i-silicon optics, i-PAM4, i-PD, kanye ne-TIA. Uhlelo oluhlangene lunezingxenye eziningi, ukusetshenziswa kwamandla okuphezulu, kanye ne-DSP esindayo, futhi ngeke luthathe indawo yamamojula e-optical ebanga elifushane ngaphandle kwemibandela.
Isikhathi sokuthunyelwe: Juni-12-2026