Marka hore, aqoonta aasaasiga ah ee moduleka indhaha
1.Qeexida moduleka indhaha:
Module indhaha: taasi waa, moduleka transceiver indhaha.
2. Qaabdhismeedka moduleka indhaha:
Module transceiver-ka indhaha waxa uu ka kooban yahay qalab optoelectronic ah, wareeg shaqaynaysa iyo indho-indheyn, aaladda optoelectronic waxa ay ka kooban tahay laba qaybood: gudbinta iyo helista.
Qaybta gudbinta waa: signal koronto gelinaya heerka koodhka gaar ah waxa lagu farsameeyaa chip wadista gudaha si loo kaxeeyo laser semiconductor (LD) ama diode iftiimiya (LED) si ay u sii dayso calaamada laydhka ee la bedelay ee heerka u dhigma, iyo indhaha indhaha. korantada koontaroolka tooska ah ayaa gudaha lagu bixiyaa. Awoodda ishaarada indhaha ee wax soo saarka ayaa weli ah mid deggan.
Qaybta helaysa waa: module gelinta signalka indhaha ee heerka koodhka qaarkood waxa loo beddelaa signalka korantada ee diode sawirqaade. Ka dib preamplifier-ka, calaamadda korantada ee heerka koodhka u dhigma ayaa soo baxaysa, calaamada wax-soo-saarka guud ahaan waa heerka PECL. Isla mar ahaantaana, qaylo-dhaanta alaarmiga ayaa soo baxaysa ka dib marka la gelinayo awoodda indhaha ay ka yaraato qiimo gaar ah.
3.Xeerka iyo muhiimada moduleka indhaha
Qaybaha indhaha ayaa leh cabbiro farsamo oo badan oo optoelectronic muhiim ah. Si kastaba ha ahaatee, labada qaybood ee kulaylaha ah ee la isku beddeli karo, GBIC iyo SFP, saddexda cabbir ee soo socda ayaa aad uga walaacsan marka la dooranayo:
Hirarka dhexda
Nanometers (nm), hadda waxa jira saddex nooc oo waaweyn:
850nm (MM, multimode, qiimo jaban laakiin fogaanta gudbinta gaaban, guud ahaan kaliya 500M); 1310nm (SM, hal qaab, khasaaro weyn inta lagu guda jiro gudbinta laakiin kala firdhiyey yar, guud ahaan loo isticmaalo gudbinta gudahood 40KM);
1550nm (SM, hal hab, khasaare yar inta lagu guda jiro gudbinta laakiin kala firidhsan weyn, guud ahaan loo isticmaalo gudbinta fogfog ee ka sarreeya 40KM, oo si toos ah u gudbin kara 120KM iyada oo aan gudbin);
Heerka gudbinta
Tirada bits (bits) ee xogta la gudbiyo ilbiriqsi kasta, bps.
Hadda waxa jira afar nooc oo inta badan la isticmaalo: 155 Mbps, 1.25 Gbps, 2.5 Gbps, 10 Gbps, iyo wixii la mid ah. Heerka gudbintu guud ahaan waa dib u socon kara. Sidaa darteed, 155M moduleka indhaha waxaa sidoo kale loo yaqaan FE (100 Mbps) moduleka indhaha, iyo 1.25G moduleka indhaha waxaa sidoo kale loo yaqaan GE (Gigabit) moduleka indhaha. Kani waa moduleka loogu isticmaalka badan yahay qalabka gudbinta indhaha. Intaa waxaa dheer, heerka gudbinta ee nidaamka kaydinta fiber (SAN) waa 2Gbps, 4Gbps iyo 8Gbps.
Fogaanta gudbinta
Calaamadaha indhaha uma baahna in lagu sii gudbiyo fogaan si toos ah loo gudbin karo, kiiloomitir (sidoo kale loo yaqaan kiiloomitir, km). Qaybaha indhaha guud ahaan waxay leeyihiin tilmaamo soo socda: multimode 550m, hal qaab 15km, 40km, 80km, iyo 120km, iyo wixii la mid ah.
Marka labaad, fikradda aasaasiga ah ee modules indhaha
1.Qaybta laser
Laysarku waa qaybta dhexe ee ugu muhiimsan moduleka indhaha kaas oo hadda ku duraya walxo semiconductor oo siiya iftiinka laysarka iyada oo loo marayo dhaqdhaqaaqyada photon iyo guulaha laga helo daloolka. Waqtigan xaadirka ah, laser-yada ugu badan ee la isticmaalo waa FP iyo DFB lasers. Farqiga ayaa ah in walxaha semiconductor iyo qaab dhismeedka daloolka ay kala duwan yihiin. Qiimaha laser-ka DFB aad ayuu uga qaalisan yahay laser-ka FP. Qaybaha indhaha oo leh masaafo gudbineed ilaa 40KM guud ahaan waxay isticmaalaan FP lasers.≥40KM guud ahaan waxay isticmaalaan leysarka DFB.
2.Transmitted power optical iyo helitaanka dareenka
Awoodda indhaha ee la kala qaado waxaa loola jeedaa soosaarka awoodda indhaha ee isha iftiinka ee dhamaadka gudbinta ee moduleka indhaha. Dareenka helitaanku waxa uu tilmaamayaa awoodda indhaha ee ugu yar ee la helay ee moduleka indhaha ee heer go'an iyo xoogaa khalad ah.
Halbeegyada labadan cabbir waa dBm (macnaha decibel milliwatt, logarithm ee unugga awoodda mw, qaacidada xisaabinta waa 10lg, 1mw waxaa loo beddelaa 0dBm), taas oo inta badan loo isticmaalo in lagu qeexo fogaanta gudbinta ee alaabta, hirarka kala duwan. heerka gudbinta iyo Awoodda gudbinta indhaha ee moduleka indhaha iyo helitaanka dareenka way ka duwanaan doontaa, ilaa inta fogaanta gudbinta la hubin karo.
3. Khasaare iyo kala daadsanaan
Lumidu waa lumista tamarta iftiinka sababtoo ah nuugista iyo kala firdhisanaanta dhexdhexaadka ah iyo daadinta iftiinka marka iftiinka lagu kala qaado fiberka. Qaybtan tamarta ka mid ah ayaa lagu kala firdhiyaa heer gaar ah marka masaafada gudbintu ay korodho dhamaadka waqtiyo kala duwan sababtoo ah isu-ururinta fogaanta gudbinta, taasoo keentay in garaaca wadnaha uu balaadhiyo oo sidaas darteed awoodin in la kala saaro calaamadaha. qiimaha. Labadan xad waxay inta badan saameeyaan fogaanta gudbinta ee moduleka indhaha. Habka codsiga dhabta ah, 1310nm moduleka indhaha guud ahaan wuxuu xisaabiyaa khasaaraha isku xirka 0.35dBm/km, iyo 1550nm moduleka indhaha guud ahaan wuxuu xisaabiyaa khasaaraha isku xirka .20dBm/km, wuxuuna xisaabiyaa qiimaha kala firidhsan. Aad u adag, guud ahaan kaliya tixraac.
4.Nolosha moduleka indhaha
Heerarka caalamiga ah ee midaysan, 50,000 saacadood oo shaqo joogto ah, 50,000 saacadood (oo u dhiganta 5 sano).
Qaybaha indhaha ee SFP waa dhammaan LC interfaces. Qaybaha indhaha ee GBIC waa dhammaan SC interfaces. Isku xirka kale waxaa ka mid ah FC iyo ST.