Kuyamba mwachidule kwa ukadaulo wa laser modulator

Chiyambi chachifupi cha lasermodulatorukadaulo
Laser ndi mafunde amphamvu kwambiri amagetsi, chifukwa cha mgwirizano wake wabwino, monga mafunde achikhalidwe amagetsi (monga omwe amagwiritsidwa ntchito pa wailesi ndi wailesi yakanema), ngati mafunde onyamulira kuti afalitse chidziwitso. Njira yoyika chidziwitso pa laser imatchedwa modulation, ndipo chipangizo chomwe chimachita izi chimatchedwa modulator. Munjira iyi, laser imagwira ntchito ngati chonyamulira, pomwe chizindikiro chotsika chomwe chimatumiza chidziwitso chimatchedwa chizindikiro chosinthidwa.
Kusintha kwa laser nthawi zambiri kumagawidwa m'njira ziwiri: kusintha kwa mkati ndi kusintha kwakunja. Kusintha kwamkati: kumatanthauza kusintha kwa kayendedwe ka laser, kutanthauza kusintha chizindikiro kuti chisinthe magawo a kusintha kwa laser, zomwe zimakhudza mawonekedwe a kutulutsa kwa laser. Pali njira ziwiri zosinthira mkati: 1. Kuwongolera mwachindunji mphamvu yopopera ya laser kuti musinthe mphamvu ya kutulutsa kwa laser. Pogwiritsa ntchito chizindikiro kuti muwongolere mphamvu ya laser, mphamvu yotulutsa ya laser ikhoza kulamulidwa ndi chizindikiro. 2. Zinthu zosinthira zimayikidwa mu resonator, ndipo mawonekedwe akuthupi a zinthu zosinthira izi amawongoleredwa ndi chizindikiro, kenako magawo a resonator amasinthidwa kuti akwaniritse kusintha kwa kutulutsa kwa laser. Ubwino wa kusintha kwamkati ndikuti magwiridwe antchito a modulation ndi okwera, koma vuto ndilakuti chifukwa modulator ili m'chimbudzi, idzawonjezera kutayika m'chimbudzi, kuchepetsa mphamvu yotulutsa, ndipo bandwidth ya modulator idzachepetsedwanso ndi passband ya resonator. Kusintha kwakunja: kumatanthauza kuti laser ikapangidwa, modulator imayikidwa panjira yowunikira kunja kwa laser, ndipo mawonekedwe akuthupi a modulator amasinthidwa ndi chizindikiro chosinthidwa, ndipo laser ikadutsa mu modulator, gawo linalake la mafunde owala lidzasinthidwa. Ubwino wa kusintha kwakunja ndikuti mphamvu yotulutsa ya laser sikhudzidwa ndipo bandwidth ya wolamulira siichepetsedwa ndi passband ya resonator. Choyipa chake ndi kuchepa kwa magwiridwe antchito a modulation.
Kusintha kwa laser kungagawidwe m'magulu a amplitude modulation, frequency modulation, phase modulation ndi intensity modulation malinga ndi makhalidwe ake a modulation. 1, amplitude modulation: amplitude modulation ndi oscillation yomwe amplitude ya chonyamulira imasintha ndi lamulo la modulated signal. 2, frequency modulation: kusintha chizindikiro kuti chisinthe frequency ya laser oscillation. 3, phase modulation: kusintha chizindikiro kuti chisinthe gawo la laser oscillation.

Module ya mphamvu yamagetsi ndi kuwala
Mfundo ya electro-optic intensity modulation ndi kuzindikira mphamvu motsatira mfundo yosokoneza kuwala kozungulira pogwiritsa ntchito mphamvu ya electro-optic ya kristalo. Mphamvu ya electro-optic ya kristalo imatanthauza chochitika chakuti refractive index ya kristalo imasintha pansi pa mphamvu ya magetsi akunja, zomwe zimapangitsa kusiyana kwa gawo pakati pa kuwala komwe kumadutsa mu kristalo m'njira zosiyanasiyana za polarization, kotero kuti mkhalidwe wa polarization wa kuwala umasintha.

Modulator ya gawo la Electro-optic
Mfundo yoyendetsera gawo la electro-optical: gawo la Angle ya laser oscillation imasinthidwa ndi lamulo la modulating signal.

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