Chidule chachidule chaukadaulo wa laser modulator

Chidule chachidule cha lasermodulitaluso
Laser ndi mafunde a electromagnetic othamanga kwambiri, chifukwa chogwirizana bwino, monga mafunde achikhalidwe amagetsi (monga momwe amagwiritsidwira ntchito pawailesi ndi wailesi yakanema), ngati mafunde onyamula kuti atumize zambiri. Njira yoyika zambiri pa laser imatchedwa modulation, ndipo chipangizo chomwe chimachita izi chimatchedwa modulator. Pochita izi, laser imakhala ngati chonyamulira, pomwe chizindikiro chotsika kwambiri chomwe chimatumiza chidziwitsocho chimatchedwa chizindikiro chosinthidwa.
Laser modulation nthawi zambiri amagawidwa mu kusintha kwa mkati ndi kunja kusinthasintha njira ziwiri. Kusinthasintha kwamkati: kumatanthauza kusinthasintha kwa njira ya laser oscillation, ndiye kuti, posintha chizindikiro kuti musinthe magawo a oscillation a laser, motero zimakhudza mawonekedwe a laser. Pali njira ziwiri zosinthira mkati: 1. Yang'anirani mwachindunji mphamvu yopopa ya laser kuti musinthe kukula kwa laser. Pogwiritsa ntchito chizindikiro kuti muwongolere magetsi a laser, mphamvu yotulutsa laser imatha kuwongoleredwa ndi chizindikiro. 2. Zomwe zimapangidwira zimayikidwa mu resonator, ndipo mawonekedwe akuthupi a zinthu zosinthikazi amayendetsedwa ndi chizindikiro, ndiyeno magawo a resonator amasinthidwa kuti akwaniritse kusintha kwa laser. Ubwino wa kusinthasintha kwamkati ndikuti kusinthasintha kwamkati ndikokwera kwambiri, koma choyipa ndichakuti chifukwa modulator ili m'bowo, imawonjezera kutayika m'bowo, kuchepetsa mphamvu yotulutsa, komanso bandwidth ya modulator idzakhalanso. malire ndi chiphaso cha resonator. Kusintha kwakunja: kumatanthauza kuti pambuyo pakupanga laser, modulator imayikidwa panjira ya kuwala kunja kwa laser, ndipo mawonekedwe akuthupi a modulator amasinthidwa ndi chizindikiro chosinthidwa, ndipo laser ikadutsa modulator, gawo linalake. za kuwala kwa mafunde zidzasinthidwa. Ubwino wa kusinthika kwakunja ndikuti mphamvu yotulutsa ya laser simakhudzidwa ndipo bandwidth ya wolamulirayo siili malire ndi passband ya resonator. The kuipa ndi otsika kusinthasintha kusinthasintha dzuwa.
Laser modulation akhoza kugawidwa mu matalikidwe kusinthasintha, pafupipafupi kusinthasintha, gawo kusinthasintha ndi mphamvu kusinthasintha malingana ndi kusinthasintha kwake katundu. 1, matalikidwe kusinthasintha: matalikidwe kusinthasintha ndi oscillation kuti matalikidwe a chonyamulira kusintha ndi lamulo la modulated chizindikiro. 2, kusinthasintha pafupipafupi: kusintha chizindikiro kuti musinthe ma frequency a laser oscillation. 3, kusinthasintha kwa gawo: kusinthira chizindikiro kusintha gawo la laser oscillation laser.

Electro-optical intensity modulator
Mfundo ya electro-optic intensity modulation ndikuzindikira kusinthasintha kwamphamvu molingana ndi mfundo yosokoneza polarized polarized pogwiritsa ntchito electro-optic effect ya crystal. Mphamvu ya electro-optical ya kristalo imatanthawuza chodabwitsa kuti chiwerengero cha refractive cha kristalo chimasintha pansi pa zochitika za kunja kwa magetsi, zomwe zimapangitsa kusiyana pakati pa kuwala komwe kumadutsa mu kristalo m'njira zosiyanasiyana, kotero kuti polarization. kusintha kwa kuwala.

Electro-optic phase module
Electro-optical phase modulation mfundo: gawo Angle ya laser oscillation imasinthidwa ndi lamulo losinthira siginecha.

Kuphatikiza pa ma electro-optic intensity modulation pamwambapa ndi ma electro-optic phase modulation, pali mitundu yambiri ya ma laser modulator, monga transverse electro-optic modulator, electro-optic travel wave modulator, Kerr electro-optic modulator, acousto-optic modulator. , magnetooptic modulator, interference modulator ndi spatial light modulator.