Mndandanda wa ma amplifier optical: Chiyambi cha Semiconductor Optical Amplifier

Chokulitsa chowunikiramndandanda: Chiyambi cha Semiconductor Optical Amplifier

Amplifier ya kuwala ya semiconductor(SOA) ndi chowongolera kuwala chomwe chimachokera ku semiconductor gain media. Chili ngati chubu cha laser cholumikizidwa ndi ulusi, ndipo galasi lomaliza limasinthidwa ndi filimu yotsutsa kuwunikira; Ma waveguides opindika angagwiritsidwe ntchito kuchepetsa kuwunikira kumapeto. Kuwala kwa chizindikiro nthawi zambiri kumatumizidwa kudzera mu semiconductor single-mode waveguide, yokhala ndi mbali ya 1-2 μ m ndi kutalika kwa pafupifupi 0.5-2mm. Njira ya waveguide imalumikizana kwambiri ndi dera logwira ntchito (lokulitsa), lomwe limapopedwa ndi mphamvu. Kulowetsa mphamvu kumapanga kuchuluka kwa carrier mu conduction band, zomwe zimapangitsa kuti kusintha kwa kuwala kuchokera ku conduction band kupita ku valence band. Kuwonjezeka kwakukulu kumachitika pa mphamvu za photon pamwamba pang'ono pa mphamvu ya bandgap.

Mfundo yogwirira ntchito ya semiconductor optical amplifier
Ma amplifiers a semiconductor optical (SOA) zimakulitsa zizindikiro za kuwala kudzera mu mpweya wotulutsidwa, ndipo njira yawo ndi yofanana ndi ya ma laser a semiconductor.Chokulitsa kuwala cha SOAndi laser ya semiconductor yokha yopanda mayankho, ndipo cholinga chake chachikulu ndikupeza phindu la optical mwa kubweza chiwerengero cha tinthu pamene semiconductor optical amplifier ikupopedwa ndi optical kapena electrically.
Mitundu yaSOA Semiconductor optical amplifier
Malinga ndi udindo wa SOA mu machitidwe a makasitomala, amatha kugawidwa m'magulu anayi: serial, booster, switching SOA, ndi preamplifier.
1. Kulowetsa mwachindunji: kukwera kwamphamvu, Psat yocheperako; NF yotsika ndi PDG yotsika, nthawi zambiri imagwirizanitsidwa ndi SOA yodziyimira payokha ya polarization.
2. Enhancer: Psat yapamwamba, phindu lochepa, nthawi zambiri limadalira polarization;
3. Kusintha: kuchuluka kwa kutha kwa zamoyo komanso nthawi yofulumira kukwera/kugwa;
4. Pre amplifier: yoyenera mtunda wautali wa ma transmission, NF yotsika, komanso gain yokwera.
Ubwino wa SOA Semiconductor optical amplifier
Kupeza kwa kuwala komwe kumaperekedwa ndi SOA mkati mwa bandwidth sikudalira kutalika kwa mafunde a chizindikiro cha kuwala chomwe chimachitika.
Ikani mphamvu yamagetsi ngati chizindikiro cha pampu yowonjezera, m'malo mopompa magetsi.
Chifukwa cha kukula kwake kochepa, SOA ikhoza kuphatikizidwa ndi zipangizo zambiri zowunikira mafunde pa substrate imodzi yolinganizidwa.
4. Amagwiritsa ntchito ukadaulo womwewo monga ma diode lasers.
SOA imatha kugwira ntchito m'magulu olumikizirana a 1300 nm ndi 1550 nm, ndi bandwidth yokulirapo (mpaka 100 nm).
6. Zitha kukonzedwa ndikugwirizanitsidwa kuti zigwiritsidwe ntchito ngati ma preamplifier kumapeto kwa optical receiver.
SOA ingagwiritsidwe ntchito ngati chipata chosavuta cha logic mu ma network a WDM optical.

Zofooka za SOA Semiconductor optical amplifier
SOA imatha kupereka mphamvu yotulutsa kuwala yokwana ma milliwatts makumi ambiri (mW), zomwe nthawi zambiri zimakhala zokwanira kugwira ntchito kwa njira imodzi mu maulalo olumikizirana a fiber optic. Komabe, makina a WDM angafunike mphamvu yokwana ma mW angapo pa njira iliyonse.
2. Chifukwa cha kulumikizana kwa ulusi wolowera mkati ndi kunja kwa ma chips ophatikizidwa a SOA omwe nthawi zambiri amayambitsa kutayika kwa chizindikiro, SOA iyenera kupereka zowonjezera zowonjezera kuti ichepetse kutayika kumeneku pa zinthu zolowera/zotulutsa za dera logwira ntchito.
SOA imakhudzidwa kwambiri ndi kugawanika kwa zizindikiro zowunikira.
4. Amapanga phokoso lalikulu m'malo ogwirira ntchito kuposa ma fiber amplifiers.
Ngati njira zambiri zowunikira zikukulitsidwa monga momwe zimafunikira mu ntchito za WDM, SOA ingayambitse kuyanjana kwakukulu.