Isantya semodyuli ye-SFP + ye-optical: I-10G SFP + i-transceiver optical iphucula i-SFP (ngamanye amaxesha ibizwa ngokuba yi "mini-GBIC"). I-SFP isetyenziswe ngokubanzi kwi-Gigabit Ethernet kunye ne-1G, i-2G, kunye ne-4G yeFiber Channel. Ukuze ukwazi ukuziqhelanisa namazinga aphezulu edatha, i-SFP+ iye yayila ukhuseleko lwe-electromagnetic olwandisiweyo kunye neempawu zokugcinwa komqondiso kune-SFP, kwaye yenze iinkcukacha ezintsha zonxibelelwano lombane.
Ujongano lwesalathiso semodyuli yokukhanya ye-SFP
1. Isiphumo samandla okukhanya okuphumayo Imveliso yamandla optical ibhekiselele kumandla okukhanya ophumayo omthombo wokukhanya ekupheleni kokuthumela kwimodyuli ye-optical, iyunithi: dBm.
2. Amandla optical afunyenweyo Afumana amandla optical abhekisela kumandla optical afunyenweyo ekupheleni kokufumana imodyuli ye-optical, iyunithi: dBm.
3. Ukufumana ubuntununtunu Ukufumana ubuntununtunu kubhekisa kumandla okukhanya afunyenweyo asezantsi emodyuli ye-optical kwireyithi ethile kunye ne-bit error rate, kwi-dBm. Ngaphantsi kweemeko eziqhelekileyo, isantya esiphezulu, sibi kakhulu ukufumana uvakalelo, oko kukuthi, ubukhulu obuncinane obufunyenweyo bombane obubonakalayo, buphezulu iimfuno zesixhobo sokufumana imodyuli ye-optical.
4. Amandla optical ahluthisiweyo, okwakwaziwa ngokuba yi-optical saturation, ibhekisa kumandla optical input aphezulu xa kukho impazamo ethile (10-10).～10-12) igcinwa kwizinga elithile losulelo.
Kufuneka kuqatshelwe ukuba i-photodetector iya kugcwalisa i-photocurrent phantsi kokukhanya okunamandla. Xa le nto isenzeka, i-detector idinga ixesha elithile lokubuyisela. Ngeli xesha, uvakalelo olufumanayo luyancipha kwaye isignali efunyenweyo inokugwetywa kakubi. Ibangela iimpazamo ezincinci, kwaye kulula kakhulu ukonakalisa isichongi somamkeli. Ekusetyenzisweni, kufuneka izame ukuthintela ukugqithiswa kwamandla ayo optical.
Qaphela ukuba kwiimodyuli zomgama omde we-optical optical, ekubeni i-avareji yemveliso yamandla optical ngokubanzi inkulu kunamandla ayo optical saturated, nceda uqaphele ubude befiber xa uyisebenzisa ukuqinisekisa ukuba amandla optical afunyenweyo afikelela kwimodyuli ye-optical. ingaphantsi kwamandla ayo optical agcweleyo. Imodyuli ye-optical yonakele.
Iinxalenye zeemodyuli ze-SFP ezibonakalayo
Ukubunjwa kwemodyuli ye-SFP optical yile: i-laser: kuquka i-TOSA yokudlulisa kunye nommkeli we-ROSA ibhodi yesekethe ye-IC, kunye nezixhobo zangaphandle: igobolondo, isiseko, i-PCBA, i-ring ring, i-buckle, iqhekeza lokuvula, iplagi yerabha. Ukongeza, ukuchongwa lula, Ngokuqhelekileyo, uhlobo lweparameter yemodyuli ichongiwe ngumbala weringi yokutsala. Umzekelo: umsesane wokutsalwa omnyama ukwimowudi eninzi, ubude bobude bungama-850nm; iblue yimodyuli enobude be-1310nm; umthubi yimodyuli enobude obuyi-1550nm; umsobo yimodyuli enobude obuyi-1490nm.
I-SFP, i-SFF kunye ne-GBIC ubudlelwane bemodyuli ye-optical
I-SFP sisishunqulelo se-Small Form-factor Pluggables, oko kukuthi, imodyuli encinci ye-pluggable optical. I-SFP inokuthathwa njengoguqulelo lwe-pluggable ye-SFF. I-interface yayo yombane ngumnwe wegolide we-20-pin. Ujongano lophawu lwedatha luyafana nemodyuli ye-SFF. Imodyuli ye-SFP ikwabonelela nge-interface ye-I2C yokulawula, ehambelana ne-SFP-8472 i-standard optical interface diagnostics. Zombini i-SFF kunye ne-SFP azibandakanyi inxalenye ye-SerDes, kwaye zibonelela kuphela nge-serial data interface. I-CDR kunye nembuyekezo yokusasazwa kombane ibekwe ngaphandle kwemodyuli, ukwenza ubungakanani obuncinci kunye nokusetyenziswa kwamandla aphantsi kunokwenzeka. Ngenxa yokunciphisa ukutshatyalaliswa kobushushu, i-SFF / SFP ingasetyenziselwa kuphela umgama omfutshane, umgama omfutshane kunye nezicelo zomgama ophakathi kwi-2.5Gbps nangaphantsi.
Iimodyuli ze-SFP optical ngoku zinesantya esiphezulu se-10G, kwaye ezininzi zisebenzisa i-interfaces ye-LC. Inokuqondwa ngokulula njengoguqulelo oluphuculweyo lwe-GBIC. Umthamo weemodyuli ze-SFP optical zincitshiswe ngesiqingatha xa kuthelekiswa ne-GBIC iimodyuli ze-optical, kwaye ngaphezu kokuphindwe kabini inani lamachweba lingaqwalaselwa kwiphaneli efanayo. Ngokumalunga neminye imisebenzi, isiseko semodyuli ye-SFP iyafana ne-GBIC. Ngoko ke, abanyetshintshaabavelisi babiza iimodyuli ze-SFP optical miniaturized GBIC.