Mfundo yogwirira ntchito ya modulator yamphamvu yofanana

Mfundo yogwirira ntchito ya wambamodulator ya mphamvu

Mfundo ya ma modulators amphamvu imasiyana malinga ndi mtundu wake. Izi ndi mfundo zogwirira ntchito za ma modulators amphamvu wamba:

1. Mach Zehnder Intensity Modulator (MZM Modulator)
Mfundo yaikulu: Kutengera momwe kuwala kumakhudzira. Mfundo yakusintha kwa mphamvu ya electro-opticndikugwiritsa ntchito mphamvu ya electro-optic ya makhiristo ndikupeza mphamvu yosinthira kutengera mfundo yosokoneza ya kuwala kozungulira. Mphamvu ya electro-optic ya kristalo imatanthauza chochitika chomwe chizindikiro cha refractive cha kristalo chimasintha pansi pa mphamvu ya mphamvu yamagetsi yakunja, zomwe zimapangitsa kusiyana kwa gawo pakati pa kuwala komwe kumadutsa mu kristalo m'njira zosiyanasiyana za polarization, motero kusintha momwe kuwala kumakhalira.
Njira yogwirira ntchito:
Kuwala kolowera kumagawidwa m'njira ziwiri ndi chogawanitsa cha beam ndipo kumadutsa m'manja awiri owongolera mafunde motsatana.
Kugwiritsa ntchito mphamvu yamagetsi yakunja ku dzanja limodzi kapena onse awiri ndikugwiritsa ntchito mphamvu yamagetsi (monga mphamvu yamagetsi yamagetsi ya lithiamu niobate crystal) kusintha chizindikiro cha refractive cha waveguide, potero kusintha gawo la mafunde owala m'manja.
Kuwala kuwiri kumaphatikizidwanso kumapeto kwa kutulutsa, ndipo chifukwa cha kusiyana kwa magawo osiyanasiyana, kusokoneza kapena kuwononga kungachitike, zomwe zimapangitsa kusintha kwa mphamvu ya kuwala kotuluka ndi magetsi.
Pamene kusiyana kwa gawo pakati pa manja awiriwa kuli 0, mphamvu ya kuwala kotuluka imakhala pamlingo wapamwamba kwambiri (mu mkhalidwe wa "pa"); Pamene kusiyana kwa gawo kuli π, mphamvu ya kuwala kotuluka imachepetsedwa (mu mkhalidwe wa "kuzima"), zomwe zimapangitsa kuti mphamvu ya kuwala isinthe.

2. Electro Absorption Intensity Modulator (EAM)
Mfundo yaikulu: Kugwiritsa ntchito mphamvu ya electroabsorption ya zinthu za chitsime cha quantum.
Njira yogwirira ntchito:
Kugwiritsa ntchito mphamvu yamagetsi yakunja pa zinthu za semiconductor za chitsime cha quantum kumasintha mphamvu ya kuyamwa kwa zinthuzo.
Kuwala kukadutsa mu chinthu, mphamvu yake imasintha chifukwa cha kusintha kwa mphamvu ya kuyamwa kwa kuwala, motero kumapangitsa kuti kuwala kusinthe.
Kawirikawiri imafuna kusinthasintha, ndipo chizindikiro chamagetsi cholowera chimakhala ndi ubale wa exponential ndi mphamvu ya kuwala kotuluka, zomwe zimapangitsa kuti chikhale choyenera kulumikizana mwachangu kwambiri.

3.modulator ya mphamvu ya acousto-optic
Mfundo yaikulu: Kutengera mphamvu ya acousto-optic.
Njira yogwirira ntchito:
Pangani mafunde a ultrasonic mu kristalo kuti apange grating yokhala ndi kusintha kwa refractive index nthawi ndi nthawi.
Kuwala kukadutsa mu grating, diffraction imachitika, ndipo mphamvu ya kuwala kosunthika imakhudzana ndi mphamvu ya mafunde a ultrasound. Mwa kulamulira mphamvu kapena kuchuluka kwa mafunde a ultrasound, mphamvu ya kuwala kotuluka imatha kusinthidwa.

4. Modulator yamphamvu ya kristalo yamadzimadzi
Mfundo yaikulu: Kugwiritsa ntchito khalidwe la kristalo wamadzimadzi kusintha kayendedwe kake pansi pa mphamvu yamagetsi.
Njira yogwirira ntchito:
Kulunjika kwa mamolekyulu amadzimadzi a kristalo kumasintha pamene mphamvu yamagetsi ikugwira ntchito, zomwe zimakhudza kufalikira kwa kuwala.
Pogwiritsa ntchito ma voltage osiyanasiyana kuti azitha kulamulira kufalikira kwa ma crystals amadzimadzi, mphamvu ya kuwala kotuluka imasinthidwa, komwe nthawi zambiri kumagwiritsidwa ntchito m'magawo owonetsera ndi kujambula.
Mitundu yosiyanasiyana ya ma modulators amphamvu ili ndi makhalidwe awoawo malinga ndi mfundo, magwiridwe antchito, ndi zochitika zogwiritsira ntchito, ndipo mtundu woyenera uyenera kusankhidwa malinga ndi zosowa zinazake.