Nke mbụ, ihe ọmụma bụ isi nke modul anya
1.Definition nke ngwa anya modul:
Modul anya: ya bụ, modul transceiver anya.
2.The Ọdịdị nke ngwa anya modul:
Modul transceiver optical bụ nke ngwaọrụ optoelectronic, sekit na-arụ ọrụ na interface anya, na ngwaọrụ optoelectronic gụnyere akụkụ abụọ: nnyefe na ịnata.
Akụkụ na-ebunye ya bụ: mgbama ọkụ eletrik na-etinye ụfọdụ ọnụọgụ koodu ka a na-ahazi ya site na mgbawa ịnya ụgbọ ala iji kwọọ semiconductor laser (LD) ma ọ bụ ọkụ na-emitting diode (LED) iji wepụta akara ọkụ gbanwere nke ọnụego kwekọrọ, yana ngwa anya. ike akpaka akara sekit a na-enye n'ime ya.Ike mgbama ngwa anya mmepụta ka kwụsiri ike.
Akụkụ na-anata bụ: modul ntinye mgbama ngwa anya nke ụfọdụ ọnụọgụ koodu ka agbanwere ka ọ bụrụ akara eletrik site na diode fotodetecting.Mgbe preamplifier ahụ gasịrị, a na-emepụta akara ọkụ eletrik nke ọnụọgụ koodu kwekọrọ, na mgbama mmepụta bụ ọkwa PECL n'ozuzu.N'otu oge ahụ, mgbaama mkpu na-apụta mgbe ike ngwa anya ntinye erughị otu uru.
3.The parameters na mkpa nke ngwa anya modul
Modul anya nwere ọtụtụ paramita teknụzụ optoelectronic dị mkpa.Agbanyeghị, maka modul ngwa anya abụọ na-ekpo ọkụ, GBIC na SFP, paramita atọ ndị a kacha echegbu mgbe ị na-ahọrọ:
Ogologo ebili mmiri etiti
Na nanometers (nm), enwere ụdị isi atọ ugbu a:
850nm (MM, multimode, ọnụ ala dị ala mana anya nnyefe dị mkpụmkpụ, n'ozuzu naanị 500M);1310nm (SM, otu ọnọdụ, nnukwu ọnwụ n'oge nnyefe ma obere mgbasa, nke a na-ejikarị maka nnyefe n'ime 40KM);
1550nm (SM, otu ọnọdụ, obere ọnwụ n'oge nnyefe ma nnukwu mgbasa ozi, nke a na-ejikarị eme ihe maka nnyefe ogologo n'elu 40KM, ma nwee ike ibunye 120KM ozugbo na-enweghị ntụgharị);
Ọnụego nnyefe
Ọnụọgụ nke bits (bits) nke data ekesara kwa sekọnd, na bps.
Enwere ụdị anọ a na-ejikarị: 155 Mbps, 1.25 Gbps, 2.5 Gbps, 10 Gbps, na ihe ndị yiri ya.Ọnụego nnyefe na-adakọkarị azụ azụ.Ya mere, a na-akpọ 155M optical module FE (100 Mbps) modul anya, na 1.25G modul anya na-akpọkwa GE (Gigabit).Nke a bụ modul kacha eji eme ihe na ngwa nnyefe anya.Na mgbakwunye, ọnụego nnyefe ya na sistemụ nchekwa fiber (SAN) bụ 2Gbps, 4Gbps na 8Gbps.
Ogologo nnyefe
Ọ dịghị mkpa ka ebufe akara ngosi anya n'ebe dị anya nke enwere ike ibunye ya ozugbo, na kilomita (nke a na-akpọkwa kilomita, km).Modul anya n'ozuzu nwere nkọwa ndị a: multimode 550m, otu ọnọdụ 15km, 40km, 80km, na 120km, na ndị ọzọ.
Nke abụọ, echiche bụ isi nke modul anya
1.Laser Atiya
Laser bụ akụkụ kachasị mkpa nke modul anya nke na-agbanye ugbu a n'ime ihe semiconductor ma na-ebunye ọkụ laser site na oscillations foton na uru na oghere.Ka ọ dị ugbu a, lasers ndị a na-ejikarị eme ihe bụ FP na DFB lasers.Ihe dị iche bụ na ihe semiconductor na oghere oghere dị iche iche.Ọnụ ego nke laser DFB dị oke ọnụ karịa laser FP.Modul anya nke nwere ebe nnyefe ruo 40KM na-ejikarị FP lasers.Optical modul na nnyefe anya.≥40KM na-ejikarị laser DFB eme ihe.
2.Transmitted ike anya na-enweta uche
Ike ngwa anya na-ebufe na-ezo aka na mmepụta ike anya nke ọkụ ọkụ na njedebe nnyefe nke modul anya.Mmetụta nnabata na-ezo aka na opekempe enwetara ike ngwa anya nke modul anya n'otu ọnụego yana ọnụego mperi.
Akụkụ nke paramita abụọ a bụ dBm (nke pụtara decibel milliwatt, logarithm nke ike unit mw, usoro mgbako bụ 10lg, 1mw na-atụgharị na 0dBm), nke a na-ejikarị akọwa ebe nnyefe nke ngwaahịa ahụ, ogologo wavelength dị iche iche, ọnụego nnyefe na ike nnyefe ngwa anya modul na-enweta uche ga-adị iche, ọ bụrụhaala na enwere ike hụ na anya nnyefe.
3.Ọnwụ na mgbasa
Ọnwụ bụ ọnwụ nke ike ọkụ n'ihi ntinye na ịgbasa nke ọkara na nkwụsị nke ìhè mgbe ọkụ na-ebufe na eriri.Nke a na akụkụ nke ume na-agbasasị na a ụfọdụ ọnụego dị ka nnyefe anya na-abawanye.The dispersion bụ tumadi mere site unequal ọsọ nke electromagnetic ebili mmiri nke dị iche iche wavelengths propagating n'otu usoro, nke na-eme ka dị iche iche wavelength akụkụ nke ngwa anya mgbaàmà iru. na-enweta njedebe n'oge dị iche iche n'ihi nchikota nke nnyefe anya, na-eme ka ụbụrụ na-agbasawanye ma si otú ahụ enweghị ike ịmata ọdịiche dị n'ókè.uru.Akụkụ abụọ a na-emetụtakarị ebe nnyefe nke modul ngwa anya.N'ime usoro ngwa ngwa n'ezie, 1310nm optical module n'ozuzu na-agbakọ ọnwụ njikọ na 0.35dBm / km, na 1550nm optical modul na-agbakọ njikọ njikọ na .20dBm / km, ma gbakọọ uru mgbasa.Dị mgbagwoju anya, n'ozuzu naanị maka ntụnye aka.
4.The ndụ nke ngwa anya modul
Ụkpụrụ ejikọtara ọnụ nke mba ụwa, awa 50,000 nke ọrụ na-aga n'ihu, awa 50,000 (nke dabara na afọ 5).
Modul ngwa anya SFP bụ oghere LC niile.Ngwa ngwa anya GBIC bụ oghere SC niile.Njikọ ndị ọzọ gụnyere FC na ST.