Mbụ niile, anyị kwesịrị ịghọta dị iche iche parametersngwa anya modul, nke e nwere ụdị isi atọ (etiti etiti ogologo, nnyefe nnyefe, ọnụego nnyefe), na isi ihe dị iche n'etiti modul anya na-egosipụtakwa na isi ihe ndị a.

1.Center wavelength

Akụkụ nke ogologo wavele nke etiti bụ nanometer (nm), ugbu a enwere ụdị isi atọ:

1) 850nm (MM,multi-mode, ọnụ ala ma mkpụmkpụ nnyefe anya, n'ozuzu naanị 500m nnyefe);

2) 1310nm (SM, otu ọnọdụ, nnukwu ọnwụ ma obere mgbasa ozi n'oge nnyefe, nke a na-ejikarị maka nnyefe n'ime 40km);

3) 1550nm (SM, otu-mode, obere mfu ma nnukwu mgbasa ozi n'oge nnyefe, n'ozuzu na-eji maka ogologo nnyefe n'elu 40km, na kasị anya nwere ike ibunye ozugbo na-enweghị ọsọ agba anọ 120km).

2. Ogologo nnyefe

Ogologo nnyefe na-ezo aka n'ebe dị anya na enwere ike ibunye akara ngosi ozugbo na-enweghị nkwalite ọsọ agba anọ.Nkeji a bụ kilomita (a na-akpọkwa kilomita, km).Optical modul n'ozuzu nwere ndị a nkọwa: multi-mode 550m, otu-mode 15km, 40km, 80km na 120km, wdg Chere.

3.Nfefe ọnụego

Ọnụego mbufe na-ezo aka na ọnụọgụ nke bits (bits) nke data ekesara kwa sekọnd, na bps.Ọnụego nnyefe dị obere ka 100M yana ihe dị elu dị ka 100Gbps.Enwere ọnụego anọ a na-ejikarị: 155Mbps, 1.25Gbps, 2.5Gbps na 10Gbps.Ọnụego nnyefe na-agbadakarị.Na mgbakwunye, enwere ụdị ọsọ ọsọ 3 nke 2Gbps, 4Gbps na 8Gbps maka modul anya na sistemụ nchekwa anya (SAN).

Mgbe ị ghọtachara paramita modul ngwa anya atọ dị n'elu, ị nwere nghọta mbido nke modul anya?Ọ bụrụ na ịchọrọ nghọta ọzọ, ka anyị leba anya na paramita ndị ọzọ nke modul ngwa anya!

1.Ọnwụ na mgbasa: Ha abụọ na-emetụta ebe nnyefe nke modul anya.N'ozuzu, a na-agbakọ ọnwụ njikọ ahụ na 0.35dBm / km maka 1310nm optical module, na njikọ njikọ na-agbakọọ na 0.20dBm / km maka 1550nm ngwa anya modul, na dispersion uru na-agbakọ dị nnọọ mgbagwoju anya, n'ozuzu maka ntụaka naanị;

2.Loss na chromatic dispersion: A na-ejikarị ihe abụọ a eme ihe iji kọwaa ebe nnyefe nke ngwaahịa ahụ, ikuku anya nke modul ngwa anya dị iche iche, ọnụego nnyefe na ebe nnyefe ike na ịnweta uche ga-adị iche;

Ụdị 3.Laser: Ugbu a, lasers a na-ejikarị eme ihe bụ FP na DFB.Ihe semiconductor na usoro resonator nke abụọ dị iche iche.Laser DFB dị oke ọnụ ma na-ejikarị eme ihe maka modul anya nwere ebe nnyefe karịrị 40km;mgbe FP lasers dị ọnụ ala, a na-ejikarị eme ihe maka modul anya nwere ebe nnyefe nke na-erughị 40km.

4. Optical fiber interface: SFP ngwa anya modul bụ niile LC interfaces, GBIC ngwa anya modul bụ niile SC interfaces, na ndị ọzọ interfaces gụnyere FC na ST;

5. Ndụ ọrụ nke modul ngwa anya: ọkọlọtọ edo edo nke mba ụwa, awa 7 × 24 nke ọrụ na-akwụsịghị akwụsị maka awa 50,000 (nke dabara na afọ 5);

6. Environment: Ọnọdụ okpomọkụ na-arụ ọrụ: 0 ~ + 70 ℃;Nchekwa okpomọkụ: -45 ~ + 80 ℃;Voltage na-arụ ọrụ: 3.3V;Ọkwa ọrụ: TTL.

Ya mere dabere na okwu mmeghe dị n'elu na paramita modul anya, ka anyị ghọta ọdịiche dị n'etiti SFP optical modul na SFP+ modul anya.

1.Definition nke SFP

SFP (obere ụdị-factor pluggable) pụtara obere ụdị-factor pluggable.Ọ bụ modul pluggable nke nwere ike ịkwado Gigabit Ethernet, SONET, Fiber Channel na ụkpụrụ nkwukọrịta ndị ọzọ wee tinye n'ọdụ ụgbọ mmiri SFP nke mgba ọkụ.Nkọwa SFP dabere na IEEE802.3 na SFF-8472, nke nwere ike ịkwado ọsọ ruo 4.25 Gbps.N'ihi obere nha ya, SFP na-edochi ihe ntụgharị Gigabit Interface Ntụgharị (GBIC), yabụ a na-akpọkwa ya Obere GBIC SFP.Site n'ịhọrọSFP modulna ogologo ebili mmiri dị iche iche na ọdụ ụgbọ mmiri, otu ọdụ ụgbọ mmiri eletrik na mgba ọkụ nwere ike jikọọ na njikọ dị iche iche na eriri anya nke dị iche iche ogologo ogologo.

2.Nkọwa nke SFP +

N'ihi na SFP naanị na-akwado ọnụego nnyefe nke 4.25 Gbps, nke na-enweghị ike izute ihe ndị mmadụ chọrọ maka ọsọ netwọkụ, a mụrụ SFP + n'okpuru ndabere a.Ọnụego nnyefe kacha nkeSFP+nwere ike iru 16 Gbps.N'ezie, SFP+ bụ ​​ụdị SFP emelitere.Nkọwa SFP+ dabere na SFF-8431.N'ọtụtụ ngwa taa, SFP + modul na-akwadokarị 8 Gbit / s Fiber Channel. The SFP + modul dochie XENPAK na XFP modul nke a na-ejikarị eme ihe na mmalite 10 Gigabit Ethernet n'ihi obere nha na iji dị mfe, ma ghọọ modul ngwa anya kacha ewu ewu na 10 Gigabit Ethernet.

Mgbe nyochachara nkọwa nke SFP na SFP + dị n'elu, enwere ike ikwubi na isi ihe dị n'etiti SFP na SFP+ bụ ​​ọnụego nnyefe.Na n'ihi ọnụego data dị iche iche, ngwa na anya nnyefe dịkwa iche.