Kwisishwankathelo sothungelwano lolwazi lwanamhlanje, unxibelelwano lwefiber optical luthatha indawo ephambili.Ngokunyuka kokugqunywa kothungelwano kunye nokwanda okuqhubekayo komthamo wonxibelelwano, ukuphuculwa kwamakhonkco onxibelelwano kukwaluphuhliso olungenakuthintelwa.Iimodyuli zamehloqaphela imiqondiso ye-optoelectronic kuthungelwano lonxibelelwano lwamehlo.Ukuguqulwa yenye yezona zinto ziphambili zonxibelelwano lwefiber optical.Nangona kunjalo, sihlala sithetha ngeemodyuli ze-optical.Ke, zithini iiparamitha zeemodyuli zamehlo?

Emva kweminyaka yophuhliso, iimodyuli ze-optical zitshintshe kakhulu iindlela zabo zokupakisha.I-SFP, i-GBIC, i-XFP, i-Xenpak, i-X2, i-1X9, i-SFF, i-200/3000pin, i-XPAK, i-QAFP28, njl. zonke ziindidi zokupakisha zemodyuli ye-optical;ngelixa i-low-speed, i-100M, i-Gigabit, i-2.5G, i-4.25G, i-4.9G, i-6G, i-8G, i-10G, i-40G, i-100G, i-200G kunye ne-400G yimilinganiselo yokudluliselwa kweemodyuli ze-optical.
Ukongeza kwezi ziqhelekileyo iiparamitha zemodyuli ye-optical, kukho oku kulandelayo:

1. Ubude obuphakathi
Iyunithi yobude bombindi yinanometer (nm), okwangoku kukho iindidi ezintathu eziphambili:
I-1) 850nm (MM, i-multi-mode, ixabiso eliphantsi kodwa umgama omfutshane wokuhambisa, ngokubanzi kuphela ukuhanjiswa kwe-500m);
2) 1310nm (SM, imodi enye, ilahleko enkulu kodwa i-dispersion encinci ngexesha lokudluliselwa, ngokuqhelekileyo isetyenziselwa ukuhanjiswa ngaphakathi kwe-40km);
I-3) I-1550nm (i-SM, i-single-mode, ilahleko ephantsi kodwa i-dispersion enkulu ngexesha lokudluliselwa, ngokuqhelekileyo isetyenziselwa ukuhanjiswa kwexesha elide ngaphezu kwe-40km, kwaye ikude kakhulu inokudluliselwa ngokuthe ngqo ngaphandle kwe-relay ye-120km).

2. Umgama wothumelo
Umgama wothumelo ubhekisa kumgama apho imiqondiso ye-optical inokuhanjiswa ngokuthe ngqo ngaphandle kokukhulisa i-relay.Iyunithi ziikhilomitha (ekwabizwa ngokuba ziikhilomitha, iikhilomitha).Iimodyuli ze-Optical ngokubanzi zineenkcukacha ezilandelayo: i-multi-mode 550m, i-mode eyodwa-15km, i-40km, i-80km, i-120km, njl. Linda.

3. Ilahleko kunye nokusabalalisa: Zombini zichaphazela kakhulu umgama wokuhanjiswa kwemodyuli ye-optical.Ngokuqhelekileyo, ilahleko yekhonkco ibalwa kwi-0.35dBm / km ye-1310nm imodyuli ye-optical, kwaye ukulahlekelwa kwekhonkco kubalwa kwi-0.20dBm / km ye-1550nm imodyuli ye-optical, kwaye ixabiso lokusabalalisa libalwe liyinkimbinkimbi kakhulu, ngokuqhelekileyo libhekisela kuphela;

4. Ilahleko kunye nechromatic dispersion: Ezi parameters zimbini zisetyenziswa ikakhulu ukuchaza umgama wothumelo lwemveliso.Amandla okuhanjiswa kwe-optical kunye nokufumana uvakalelo lweemodyuli ze-optical ze-wavelengths ezahlukeneyo, amazinga okuhambisa kunye nemigama yokuhambisa iya kuhluka;

5. Udidi lweLaser: Okwangoku, ezona lasers zisetyenziswa kakhulu yiFP kunye neDFB.Izixhobo ze-semiconductor kunye nesakhiwo se-resonator yezi zibini zihluke.Iilaser zeDFB ziyabiza kwaye zisetyenziswa kakhulu kwiimodyuli zamehlo ezinomgama wothumelo ongaphezulu kwe-40km;ngelixa ii-laser ze-FP zitshiphu, Ngokuqhelekileyo zisetyenziselwa iimodyuli ze-optical kunye nomgama wokudluliselwa ongaphantsi kwe-40km.

6. I-fiber interface ye-Optical: Iimodyuli ze-SFP optical zizo zonke i-LC interfaces, iimodyuli ze-GBIC optical zizo zonke i-SC interfaces, kunye nezinye i-interfaces ziquka i-FC kunye ne-ST, njl.;

7. Ubomi benkonzo yemodyuli ye-optical: umgangatho ofanayo wamazwe ngamazwe, iiyure ze-7 × 24 zomsebenzi ongaphazamisekiyo kwiiyure ezingama-50,000 (ezilingana neminyaka emi-5);

8. Okusingqongileyo: Ubushushu bokusebenza: 0~+70℃;Ubushushu bokugcina: -45 ~ + 80 ℃;Umbane osebenzayo: 3.3V;Inqanaba lokusebenza: TTL.