Makhalidwe a EDFA Optical Amplifier

Makhalidwe aChokulitsa cha EDFA Optical
Kutalika kwa nthawi yogwira ntchito ya EDFAChokulitsa ChowunikiraIli mkati mwa kutalika kwa mafunde abwino kwambiri a 1330-1600nm polumikizirana ndi fiber optic. EDFA Optical Amplifier yomwe imagwira ntchito mu C-band (1530-1565nm) yokhala ndi zenera lotsika kwambiri la fiber loss yagwiritsidwa ntchito kwambiri. Kuti agwiritse ntchito bwino mphamvu za bandwidth za ulusi wa optical, anthu amadziperekanso kupanga EDFA Optical Amplifier mu L-band (1570-1610nm). L-band ili kumbuyo kwa EDFA amplifier gain spectrum, kotero L-band EDFA Optical Amplifier iyenera kugwiritsa ntchito ulusi wautali komanso mphamvu yayikulu ya pampu, kapena kugwiritsa ntchito ulusi wolemera kwambiri.
EDFA Optical Amplifier ili ndi phindu lalikulu (loposa 30-50dB) ndipo imapereka phindu lathyathyathya pamwamba pa gulu lalikulu la ma frequency (mpaka 30nm), zomwe zimapangitsa kuti ikhale yoyenera kukulitsa ma signaling mu njira zingapo za optical, makamaka mu makina a dense wavelength division multiplexing (DWDM). Phokoso lochepa (4-8dB), lomwe limayandikira malire a quantum. Ikagwiritsidwa ntchito ku machitidwe a WDM, kulumikizana pakati pa njira kumachepetsedwa ndipo ma amplifiers angapo amatha kusunthidwa. Pokhala ndi mphamvu yayikulu yotulutsa mphamvu (10-20 dBm), ingagwiritsidwe ntchito ngati amplifier yamphamvu pambuyo pa transmitter kuti iwonjezere mtunda wotumizira kapena kuchuluka kwa ma node optical opanda mizere yolumikizira. Mphamvu yofunikira ya pampu ndi yotsika (makumi a milliwatts). Kuwonjezekako sikudalira momwe ulusi umakhalira, kotero kumakhala kolimba bwino. Kosavuta kuphatikiza ndi ulusi wa optical wotumizira, ndi kutayika kochepa kwa coupling (<1dB). Kupatula gwero la pampu,Chokulitsa cha EDFAimapangidwa ndi zinthu zopanda ntchito. Chifukwa chake, poyerekeza ndi ma relay ovuta komanso okwera mtengo amagetsi obwezeretsanso, mtengo wa makinawo umachepetsedwa kwambiri ndipo kudalirika kumawonjezeka. Kuphatikiza apo, mawonekedwe a EDFA Amplifier sadalira liwiro la bit ndi mtundu wa data ya makinawo, kotero imatha kukulitsa ndikutumiza zambiri za digito ndi analogi.
Zoyipa za EDFA Optical Amplifier ndi izi: kukula kwakukulu; Nthawi yogwira ntchito ya gwero la pampu si yayitali; Silingathe kuphatikizidwa ndi zida zina, zomwe zimachepetsa kugwiritsa ntchito EDFA Amplifier mu optoelectronic integration (OEIC). Kuphatikiza apo, bandwidth ya gain ya EDFA Optical Amplifier imangophimba gawo la zenera lotsika la quartz single-mode fiber, zomwe zimachepetsa kuchuluka kwa njira za wavelength zomwe ulusiwo ungathe kunyamula, zomwe ndi vuto lake.