1. Erbium-doped fiber
Erbium yog ib qho khoom tsis tshua muaj nyob hauv ntiaj teb nrog tus lej atomic ntawm 68 thiab qhov hnyav atomic ntawm 167.3. Qib zog hluav taws xob ntawm erbium ion tau qhia hauv daim duab, thiab kev hloov pauv ntawm qib zog qis dua mus rau qib zog siab dua sib raug rau cov txheej txheem nqus ntawm lub teeb. Kev hloov pauv ntawm qib zog siab dua mus rau qib zog qis dua sib raug rau cov txheej txheem tso tawm lub teeb.
2. Txoj cai EDFA
EDFA siv erbium ion-doped fiber ua qhov nce nruab nrab, uas tsim cov pej xeem inversion nyob rau hauv lub teeb twj tso kua mis. Nws paub txog kev txhawb nqa hluav taws xob amplification nyob rau hauv lub induction ntawm lub teeb liab.
Erbium ions muaj peb theem zog. Lawv nyob rau theem zog qis tshaj plaws, E1, thaum lawv tsis raug txhawb los ntawm lub teeb. Thaum lub fiber raug txhawb tas li los ntawm lub twj tso kua mis lub teeb laser, cov khoom me me hauv lub xeev hauv av tau txais lub zog thiab hloov mus rau theem zog siab dua. Xws li kev hloov pauv ntawm E1 mus rau E3, vim tias cov khoom me me tsis ruaj khov ntawm theem zog siab ntawm E3, nws yuav poob sai sai rau lub xeev metastable E2 hauv cov txheej txheem hloov pauv tsis-radiative. Ntawm theem zog no, cov khoom me me muaj lub neej ntev ntev. Vim yog qhov kev txhawb nqa tas li ntawm lub twj tso kua mis lub teeb, tus lej ntawm cov khoom me me ntawm qib zog E2 yuav txuas ntxiv mus, thiab tus lej ntawm cov khoom me me ntawm qib zog E1 yuav nce ntxiv. Ua li no, cov pej xeem inversion faib tau pom tseeb hauv cov fiber erbium-doped, thiab cov xwm txheej rau kev kawm optical amplification muaj.
Thaum lub zog photon ntawm lub teeb liab E = hf yog sib npaug rau qhov sib txawv ntawm lub zog ntawm E2 thiab E1, E2-E1 = hf, cov khoom me me hauv lub xeev metastable yuav hloov mus rau lub xeev av E1 hauv daim ntawv ntawm kev hluav taws xob txhawb nqa. Kev hluav taws xob thiab kev nkag mus Cov photons hauv lub teeb liab zoo ib yam li cov photons, yog li ua rau cov photons ntau ntxiv, ua rau lub teeb liab teeb liab nkag mus ua lub teeb liab muaj zog tso zis hauv cov fiber erbium-doped, paub txog qhov kev nthuav dav ncaj qha ntawm lub teeb liab teeb liab.
2. Daim duab qhia txog lub kaw lus thiab kev qhia txog cov khoom siv yooj yim
2.1. Daim duab qhia txog lub tshuab L-band optical fiber amplifier yog raws li nram no:
2.2. Daim duab qhia txog ASE lub teeb ci rau kev tso tawm ntawm erbium-doped fiber yog raws li nram no:
Kev taw qhia txog khoom siv
1.ROF -EDFA -HP Lub Hwj Chim Siab Erbium Doped Fiber Amplifier
| Cov Qauv | Chav tsev | Tsawg kawg | Hom | Qhov siab tshaj plaws | |
| Kev ua haujlwm wavelength ntau yam | nm | 1525 xyoo | 1565 xyoo | ||
| Lub zog teeb liab nkag | dBm | -5 | 10 | ||
| Cov zis hluav taws xob kho qhov muag | dBm | 37 | |||
| Kev ruaj khov ntawm lub zog hluav taws xob ntawm qhov muag pom kev | dB | ±0.3 | |||
| Suab nrov ntsuas @ tswv yim 0dBm | dB | 5.5 | 6.0 | ||
| Kev rho tawm qhov muag pom kev | dB | 30 | |||
| Kev rho tawm qhov muag pom kev tso zis | dB | 30 | |||
| Kev poob rov qab los ntawm cov tswv yim | dB | 40 | |||
| Kev poob rov qab los ntawm cov zis | dB | 40 | |||
| Kev nce qib nyob ntawm polarization | dB | 0.3 | 0.5 | ||
| Hom kev faib tawm ntawm polarization | ps | 0.3 | |||
| Qhov xau ntawm lub twj tso kua mis nkag | dBm | -30 | |||
| Qhov xau ntawm lub twj tso zis | dBm | -30 | |||
| Kev ua haujlwm voltage | V( AC ) | 80 | 240 | ||
| Hom fiber | SMF-28 | ||||
| Cov zis interface | FC/APC | ||||
| Kev sib txuas lus sib txuas lus | RS232 | ||||
| Qhov loj ntawm pob khoom | Module | mm | 483 × 385 × 88 (2U khib) | ||
| Desktop | mm | 150 × 125 × 35 | |||
2.ROF -EDFA -B erbium-doped fiber fais fab amplifier
| Cov Qauv | Chav tsev | Tsawg kawg | Hom | Qhov siab tshaj plaws | ||
| Kev ua haujlwm wavelength ntau yam | nm | 1525 xyoo | 1565 xyoo | |||
| Cov teeb liab tso zis hluav taws xob ntau yam | dBm | -10 | ||||
| Qhov nce me me ntawm lub teeb liab | dB | 30 | 35 | |||
| Qhov ntau ntawm cov zis tawm ntawm qhov muag pom * | dBm | 17/20/23 | ||||
| Tus lej suab nrov ** | dB | 5.0 | 5.5 | |||
| Kev rho tawm cov tswv yim | dB | 30 | ||||
| Kev rho tawm cov zis | dB | 30 | ||||
| Kev nce qib ywj pheej ntawm Polarization | dB | 0.3 | 0.5 | |||
| Hom kev faib tawm ntawm polarization | ps | 0.3 | ||||
| Qhov xau ntawm lub twj tso kua mis nkag | dBm | -30 | ||||
| Qhov xau ntawm lub twj tso zis | dBm | -40 | ||||
| Kev ua haujlwm voltage | module | V | 4.75 | 5 | 5.25 | |
| desktop | V( AC ) | 80 | 240 | |||
| Cov khoom siv fiber ntau | SMF-28 | |||||
| Cov zis interface | FC/APC | |||||
| Qhov Loj | module | mm | 90 × 70 × 18 | |||
| desktop | mm | 320 × 220 × 90 | ||||
3. ROF -EDFA -P qauv Erbium doped fiber amplifier
| Cov Qauv | Chav tsev | Tsawg kawg | Hom | Qhov siab tshaj plaws | |
| Kev ua haujlwm wavelength ntau yam | nm | 1525 xyoo | 1565 xyoo | ||
| Lub zog teeb liab nkag | dBm | -45 | |||
| Qhov nce me me ntawm lub teeb liab | dB | 30 | 35 | ||
| Qhov ntau ntawm cov zis hluav taws xob kho qhov muag saturation * | dBm | 0 | |||
| Cov ntsuas suab nrov ** | dB | 5.0 | 5.5 | ||
| Kev rho tawm qhov muag pom kev | dB | 30 | |||
| Kev rho tawm qhov muag pom kev tso zis | dB | 30 | |||
| Kev nce qib nyob ntawm polarization | dB | 0.3 | 0.5 | ||
| Hom kev faib tawm ntawm polarization | ps | 0.3 | |||
| Qhov xau ntawm lub twj tso kua mis nkag | dBm | -30 | |||
| Qhov xau ntawm lub twj tso zis | dBm | -40 | |||
| Kev Ua Haujlwm Voltage | Module | V | 4.75 | 5 | 5.25 |
| Desktop | V( AC ) | 80 | 240 | ||
| Hom fiber | SMF-28 | ||||
| Kev Sib Txuas Lus Tso Tawm | FC/APC | ||||
| Qhov loj ntawm pob khoom | Module | mm | 90 * 70 * 18 | ||
| Desktop | mm | 320 * 220 * 90 | |||