Ugu horreyntii, waxaan u baahanahay inaan fahamno xuduudaha kala duwan eemodules indhaha, kuwaas oo ay jiraan saddex nooc oo waaweyn (mawjadaha dhexe, fogaanta gudbinta, heerka gudbinta), iyo farqiga ugu weyn ee u dhexeeya modules indhaha ayaa sidoo kale ka muuqda qodobadan.

1.Mawjada dhexda

Unugga hirarka dhererka dhexe waa nanometer (nm), hadda waxaa jira saddex nooc oo waaweyn:

1) 850nm (MM,qaab-badan, qiimo jaban laakiin fogaanta gudbinta gaaban, guud ahaan kaliya 500m gudbinta);

2) 1310nm (SM, hal hab, khasaaro weyn laakiin kala firdhisan yar inta lagu guda jiro gudbinta, guud ahaan loo isticmaalo gudbinta gudahood 40km);

3) 1550nm (SM, hal-mode, khasaare hoose laakiin kala firidhsan weyn inta lagu guda jiro gudbinta, guud ahaan loo isticmaalo gudbinta fogfog ee ka sarreeya 40km, iyo ka fog waxaa si toos ah la isugu gudbin karaa iyada oo aan Relay 120km).

2. Fogaanta gudbinta

Fogaanta gudbinta waxaa loola jeedaa fogaanta in calaamadaha indhaha si toos ah loo gudbin karo iyada oo aan la kordhinin gudbinta. Unuggu waa kiiloomitir (sidoo kale loo yaqaan kiiloomitir, km). Qaybaha indhaha guud ahaan waxay leeyihiin tilmaamo soo socda: qaab-badan 550m, hal-mode 15km, 40km, 80km iyo 120km, iwm. Sug.

3.Heerka gudbinta

Heerka gudbinta waxaa loola jeedaa tirada bits (bits) ee xogta la gudbiyo ilbiriqsi kasta, bps. Heerka gudbintu waa mid hooseeya sida 100M iyo sida ugu sarreeya 100Gbps. Waxa jira afar qiime oo inta badan la isticmaalo: 155Mbps, 1.25Gbps, 2.5Gbps iyo 10Gbps. Heerka gudbintu guud ahaan waa hoos. Intaa waxaa dheer, waxaa jira 3 nooc oo ah xawaaraha 2Gbps, 4Gbps iyo 8Gbps ee modules indhaha ee nidaamyada kaydinta indhaha (SAN).

Kadib markaad fahanto sadexda qaybood ee moduleka indhaha ee sare, ma leedahay fahan horudhac ah oo ku saabsan moduleka indhaha? Haddii aad rabto faham dheeraad ah, aan eegno xuduudaha kale ee moduleka indhaha!

1. khasaare iyo kala firdhisanaan: Labaduba waxay inta badan saameeyaan fogaanta gudbinta ee moduleka indhaha. Guud ahaan, luminta isku xirka waxaa lagu xisaabiyaa 0.35dBm/km ee moduleka indhaha ee 1310nm, luminta isku xirka waxaa lagu xisaabiyaa 0.20dBm / km ee moduleka indhaha ee 1550nm, qiimaha kala firdhinta waxaa loo xisaabiyaa Aad u adag, guud ahaan tixraaca kaliya;

2.Loss and chromatic dispersion: Labadan xuduud waxaa inta badan loo isticmaalaa si loo qeexo fogaanta gudbinta ee alaabta, qiiqa indhaha ee modules indhaha leh hirarka kala duwan, heerka gudbinta iyo fogaanta gudbinta Awoodda iyo helitaanka dareenka ayaa noqon doona kala duwan;

Qaybta 3.Laser: Waqtigan xaadirka ah, laser-yada ugu badan ee la isticmaalo waa FP iyo DFB. Qalabka semiconductor-ka iyo qaab-dhismeedka resonator-ka ee labaduba way kala duwan yihiin. Laysarka DFB waa qaali waxaana inta badan loo isticmaalaa modules indhaha oo masaafo gudbin ka badan 40km; halka lasers-ka FP uu yahay mid raqiis ah, Guud ahaan waxaa loo isticmaalaa modules-ka indhaha oo leh masaafada gudbinta ee ka yar 40km.

4. Interface fiber Optical: SFP modules Optical modules are all LC interfaces, GBIC modules optical modules are all SC interfaces, iyo interfaces kale ka mid ah FC iyo ST;

5. Nolosha adeegga ee moduleka indhaha: heerka lebiska caalamiga ah, 7 × 24 saacadood oo shaqo aan kala go 'lahayn saacadaha 50,000 (oo u dhiganta 5 sano);

6. Deegaanka: heerkulka shaqada: 0 ~ + 70 ℃; Heerkulka kaydinta: -45 ~ + 80 ℃; Korantada shaqada: 3.3V; Heerka shaqada: TTL.

Haddaba anagoo ka duulayna hordhaca sare ee cabbiraadaha moduleka indhaha, aynu fahano farqiga u dhexeeya moduleka indhaha ee SFP iyo SFP+ moduleka indhaha.

1.Qeexida SFP

SFP (Foom-factor pluggable yar) macnaheedu waa qaab-wax yar oo la xidhi karo. Waa unug la xidhi karo oo taageeri kara Gigabit Ethernet, SONET, Fiber Channel iyo heerarka kale ee isgaarsiinta oo ku xidhi kara dekedda SFPbeddelo. Qeexitaanka SFP wuxuu ku salaysan yahay IEEE802.3 iyo SFF-8472, kaas oo taageeri kara xawaaraha ilaa 4.25 Gbps. Cabbirkeeda yar awgeed, SFP waxa ay bedeshaa Gigabit Interface Converter (GBIC) oo hore loo wada yaqaan, sidaas darteed waxa kale oo loo yaqaan mini GBIC SFP. Adiga oo dooranayamodules SFPoo leh mowjadaha dhaadheer ee kala duwan iyo dekedaha, isla dekedda korantada ee ku taalbeddelowaxa lagu xidhi karaa xidhiyaal kala duwan iyo fiilooyinka indhaha ee hirarka dhaadheer ee kala duwan.

2.Qeexida SFP+

Sababtoo ah SFP kaliya waxay taageertaa heerka gudbinta 4.25 Gbps, taas oo aan buuxin karin shuruudaha sii kordhaya ee dadka ee xawaaraha shabakada, SFP+ waxay ku dhalatay asalkan. Heerka gudbinta ugu badan eeSFP+wuxuu gaari karaa 16 Gbps. Dhab ahaantii, SFP+ waa nooca la xoojiyey ee SFP. Tilmaamaha SFP+ waxay ku salaysan yihiin SFF-8431. Inta badan codsiyada maanta, SFP + modules waxay inta badan taageeraan 8 Gbit / s Fiber Channel. Qaybta SFP + waxay beddeshay XENPAK iyo XFP modules kuwaas oo inta badan loo isticmaalo horraantii 10 Gigabit Ethernet sababtoo ah cabbirkeeda yar iyo isticmaalka habboon, oo noqday moduleka indhaha ee ugu caansan 10 Gigabit Ethernet.

Ka dib marka la falanqeeyo qeexida sare ee SFP iyo SFP+, waxaa la soo gabagabeyn karaa in farqiga ugu weyn ee u dhexeeya SFP iyo SFP+ uu yahay heerka gudbinta. Iyo sababtoo ah heerarka xogta kala duwan, codsiyada iyo fogaanta gudbinta ayaa sidoo kale kala duwan.