Basic qhia txog optical module

Basic qhia txog optical module

Optical module yog tsim los ntawm optoelectronic li, functional circuits thiab optical interfaces. Cov khoom siv optoelectronic suav nrog ob ntu: xa thiab txais. Hauv luv luv, kev ua haujlwm ntawm qhov kho qhov muag module yog hloov cov teeb liab hluav taws xob mus rau qhov teeb meem kho qhov muag ntawm qhov kawg xa. Tom qab cov teeb liab kho qhov muag kis tau los ntawm cov khoom siv kho qhov muag, qhov kawg tau txais kev hloov pauv cov teeb liab kho qhov muag rau hauv cov teeb liab hluav taws xob.

Cov kis tau tus mob yog: lub input hluav taws xob teeb liab ntawm ib tug me ntsis tus nqi yog ua tiav los ntawm lub internal tsav nti, thiab ces tsav lub semiconductor laser (LD) los yog lub teeb emitting diode (LED) emit lub modulated kho qhov muag teeb liab ntawm tus nqi sib xws. Internal optical fais fab tsis siv neeg tswj Circuit Court yog nruab los ua kom cov zis hluav taws xob kho qhov muag lub zog ruaj khov.

Qhov tau txais yog: optical teeb liab input module nrog ib tug me ntsis tus nqi yog hloov dua siab tshiab rau hauv hluav taws xob teeb liab los ntawm lub optical detection diode, thiab cov hluav taws xob teeb liab nrog rau tus nqi me ntsis yog tso zis tom qab lub preamplifier.

-Basic tswvyim ntawm optical module-

Port-optical module yog lub npe dav dav ntawm ntau pawg module, feem ntau xa mus rau optical transceiver integrated module

-Function ntawm optical module-

Nws txoj haujlwm tsuas yog kom paub txog kev hloov pauv ntawm cov teeb liab kho qhov muag thiab cov teeb liab hluav taws xob.

- Optical module qauv-

Lub optical module feem ntau yog tsim los ntawm optical transmitter, optical receiver, functional circuit and optical (hluav taws xob) interface.

Ntawm lub transmitter, tus tsav nti ua cov thawj hluav taws xob teeb liab, thiab ces tsav lub semiconductor laser (LD) los yog lub teeb emitting diode (LED) emit modulated optical teeb liab.

Qhov chaw nres nkoj nyob ntawm qhov kawg tau txais. Tom qab cov teeb liab kho qhov muag los, nws tau hloov mus rau hauv hluav taws xob teeb liab los ntawm qhov muag pom diode, thiab tom qab ntawd tso tawm hluav taws xob teeb liab los ntawm preamplifier.

- Optical hom kev faib tawm-

-Kev txhim kho keeb kwm ntawm optical hom-

-Introduction to optical module ntim-

Muaj ntau hom kev ntim khoom rau optical modules, feem ntau yog vim:

》Kev loj hlob ceev ntawm optical fiber kev sib txuas lus technology yog ceev heev. Qhov ceev ntawm optical module yog nce, thiab lub ntim kuj yog shrinking, yog li ntawd txhua txhua ob peb xyoos, tshiab ntim ntawv yuav raug muab

raug Nws kuj yog ib qho nyuaj rau ua tau raws li cov qauv ntim tshiab thiab qub.

》Cov ntawv thov scenarios ntawm optical modules muaj ntau haiv neeg. Kev sib kis sib txawv, qhov yuav tsum tau muaj bandwidth, thiab qhov chaw siv, sib xws rau ntau hom fiber ntau siv, optical modules kuj txawv.

Chaw nres nkoj GBIC

GBIC yog Giga Bitrate Interface Converter.

Ua ntej 2000, GBIC yog qhov nrov tshaj plaws optical module ntim thiab feem ntau siv gigabit module daim ntawv.

Chaw nres nkoj SFP

Vim tias qhov loj ntawm GBIC, SFP tau tshwm sim tom qab thiab pib hloov GBIC.

SFP, lub npe tag nrho ntawm Small Form-factor Pluggable, yog me me kub-swappable optical module. Nws qhov me me yog txheeb ze rau GBIC ntim. Qhov loj ntawm SFP yog ib nrab me dua li ntawm GBIC module, thiab ntau dua ob npaug ntawm cov chaw nres nkoj tuaj yeem teeb tsa ntawm tib lub vaj huam sib luag. Hais txog kev ua haujlwm, muaj qhov sib txawv me ntsis ntawm ob, thiab ob qho tib si txhawb nqa kub ntsaws. Qhov siab tshaj plaws bandwidth txhawb nqa los ntawm SFP yog 4Gbps

Oral XFP

XFP yog 10-Gigabit Small Form-factor Pluggable, uas tuaj yeem nkag siab ntawm ib nrais muag. Nws yog 10-Gigabit SFP.

XFP txais yuav ib qho kev ceev ib leeg-channel serial module txuas los ntawm XFI (10Gb serial interface), uas tuaj yeem hloov Xenpak thiab nws cov derivatives.

Chaw nres nkoj SFP +

SFP +, zoo li XFP, yog 10G optical module.

Qhov loj ntawm SFP + yog tib yam li ntawm SFP. Nws yog compact dua XFP (txo li ntawm 30%), thiab nws lub zog noj kuj tseem me me (txo los ntawm qee lub teeb liab tswj kev ua haujlwm).

O SFP28

SFP nrog tus nqi ntawm 25Gbps feem ntau yog vim 40G thiab 100G optical modules tau kim heev thaum lub sijhawm ntawd, yog li qhov kev hloov pauv hloov pauv no tau ua.

QSFP/QSFP+/QSFP28/QSFP28-DD

Quad Small Form-Factor Pluggable, plaub-channel SFP interface. Ntau yam txuj ci tseem ceeb hauv XFP tau siv rau qhov tsim no. QSFP tuaj yeem muab faib ua 4 raws li ceev × 10G QSFP +, 4 × 25G QSFP28, 8 × 25G QSFP28-DD optical module, thiab lwm yam.

Siv QSFP28 ua piv txwv, uas muaj feem xyuam rau 4 × 25GE nkag chaw nres nkoj. QSFP28 tuaj yeem siv los hloov kho los ntawm 25G mus rau 100G yam tsis muaj 40G, ua kom yooj yim rau kev nyuaj ntawm cabling thiab txo cov nqi.

QSFP/QSFP+/QSFP28/QSFP28-DD

QSFP-DD, tsim nyob rau hauv Lub Peb Hlis 2016, hais txog "Double Density". Ntxiv ib kab ntawm cov channel rau 4 raws ntawm QSFP thiab hloov lawv mus rau 8 raws.

Nws tuaj yeem ua tau raws li QSFP lub tswv yim. Thawj QSFP28 module tseem tuaj yeem siv tau, tsuas yog ntxig rau lwm qhov module. Tus naj npawb ntawm cov ntiv tes kub ntawm OSFP-DD yog ob npaug ntawm QSFP28.

Txhua QSFP-DD txais 25Gbps NRZ lossis 50Gbps PAM4 teeb liab hom. Nrog PAM4, nws tuaj yeem txhawb nqa txog 400Gbps.

OSFP

OSFP, Octal Small Form Factor Pluggable, "O" sawv cev rau "octal", tau tsim tawm thaum lub Kaum Ib Hlis 2016.

Nws yog tsim los siv 8 cov kab hluav taws xob kom paub txog 400GbE (8 * 56GbE, tab sis 56GbE teeb liab yog tsim los ntawm 25G DML laser nyob rau hauv kev hloov kho ntawm PAM4), thiab nws qhov loj me me me dua QSFP-DD. Optical engine thiab transceiver nrog ntau dua wattage muaj me ntsis zoo dua tshav kub dissipation kev ua tau zoo.

CFP / CFP2 / CFP4 / CFP8

Centum gigabits Form Pluggable, ntom wavelength division optical kev sib txuas lus module. Cov kis tau tus mob tuaj yeem ncav cuag 100-400Gbpso

CFP yog tsim los ntawm lub hauv paus ntawm SFP interface, nrog loj loj thiab txhawb 100Gbps cov ntaub ntawv xa mus. CFP tuaj yeem txhawb nqa ib qho 100G teeb liab thiab ib lossis ntau dua 40G teeb liab.

Qhov txawv ntawm CFP, CFP2 thiab CFP4 yog ntim. Qhov ntim ntawm CFP2 yog ib nrab ntawm CFP, thiab CFP4 yog ib feem peb ntawm CFP. CFP8 yog ib daim ntawv ntim tshwj xeeb tshaj tawm rau 400G, thiab nws qhov loj yog sib npaug rau CFP2. Txhawb 25Gbps thiab 50Gbps channel tus nqi, thiab paub txog 400Gbps module tus nqi los ntawm 16x25G lossis 8 × 50 hluav taws xob interface.