Noocyada modulators laser

Marka hore, habaynta gudaha iyo habaynta dibadda
Marka loo eego xidhiidhka ka dhexeeya modulator-ka iyo laysarka,habaynta laysarkawaxa loo kala qaybin karaa habaynta gudaha iyo habaynta dibadda.

01 habaynta gudaha
Calaamadaha is-beddelka waxaa lagu fuliyaa habka loo yaqaan 'laser oscillation', taas oo ah, cabbirada oscillation laser waxaa loo beddelaa sida uu qabo sharciga calaamadda wax-qabadka, si loo beddelo sifooyinka wax-soo-saarka laysarka oo loo gaaro habeynta.
(1) Si toos ah u xakamee isha bamka laysarka si aad u gaadho habaynta wax-soo-saarka xoojinta laysarka iyo haddii ay jirto, si ay u maamusho tamarta korontada.
(2) Qalabka wax-ka-beddelka waxaa lagu dhejiyaa resonator-ka, iyo isbeddelka sifooyinka jireed ee curiyaha modulation-ka waxaa xakameynaya calaamadda si loo beddelo xuduudaha resonator-ka, sidaas darteed beddelidda sifooyinka soo-saarka laser-ka.

02 Hababka dibadda
Hababka dibadda waa kala-soocidda jiilka laysarka iyo habaynta. Waxa loola jeedaa rarista calaamadda la beddelay ka dib samaynta laysarka, taas oo ah, modulator-ka ayaa la dhigayaa waddada indhaha ee ka baxsan resonator laser.
Korontada calaamadda is-beddelka ayaa lagu daraa modulator-ka si loo sameeyo qaar ka mid ah astaamaha jireed ee isbeddelka wejiga modulator-ka, iyo marka laysarka uu dhex maro, cabbirrada hirarka iftiinka qaarkood ayaa la beddelaa, sidaas darteed waxay xambaarsan yihiin macluumaadka la gudbinayo. Sidaa darteed, habaynta dibadda maaha in la beddelo cabbirrada laysarka, laakiin waa in la beddelo cabbirrada laser-ka wax soo saarka, sida xoojinta, soo noqnoqda, iyo wixii la mid ah.

Labaad,modulator laserkala saarid
Marka loo eego habka shaqada ee modulator-ka, waxaa loo kala saari karaahabaynta elektro-optic, modulation acoustooptic, habaynta magneto-optic iyo habaynta tooska ah.

01 Habaynta tooska ah
Xilliga wadista eelaser semiconductorama diode iftiimiya waxaa si toos ah loogu habeeyey calaamada korantada, si iftiinka wax soo saarka loogu beddelo isbeddelka calaamadda korantada.

(1) Hababka TTL ee qaabaynta tooska ah
Calaamadda dhijitaalka ah ee TTL ayaa lagu daraa koronto-siinta laysarka, si markaa waditaanka laser-ka hadda lagu xakameyn karo ishaarka dibadda, ka dibna inta jeer ee wax soo saarka laysarka la xakameyn karo.

(2) Analog modulation ee qaabaynta tooska ah
Marka lagu daro calaamadda analoogga ah ee sahayda korontada laysarka (cabbir ka yar 5V mowjadda isbeddelka is-beddelka sabab la'aanta ah), waxay ka dhigi kartaa gelinta signalka dibadda koronto kala duwan oo u dhiganta laysarka oo kala duwan hadda, ka dibna koontaroolaya awoodda laser-ka ee wax soo saarka.

02 Hababka Electro-optic
Habaynta iyadoo la isticmaalayo saamaynta korantada-optic-ga waxa loo yaqaan habaynta korantada. Saldhigga jireed ee qaabaynta korantada-optic-ga ayaa ah saamaynta korantada-optic-ga, taas oo ah, iyadoo la adeegsanayo falgal koronto oo la dabaqay, index refractive of crystals qaar ayaa isbedeli doona, iyo marka hirarka iftiinka uu dhex maro dhexdhexaadkan, astaamaha gudbintiisa ayaa isbedeli doona. la saameeyo oo la beddelo.

03 Hababka Acousto-optic
Saldhigga jireed ee qaabaynta acousto-optic waa saamaynta acousto-optic, taas oo tixraacaysa ifafaale in hirarka iftiinka ay kala firdhiyaan ama kala firdhiyaan goobta hirarka ka sarreeya marka ay ku faafinayaan dhexdhexaadka. Marka index refractive ee dhexdhexaad ah isbeddelo xilli si ay u sameeyaan grating index refractive, diffraction iman doonaa marka mawjada iftiin faafin ee dhexdhexaadka ah, iyo xoogga, inta jeer iyo jihada iftiinka kala duwanaansho beddeli doonaa marka la beddelo garoonka mawjada supergenerated.
Habbaynta acousto-optic waa hannaan jireed oo adeegsada saamaynta acousto-optic si loogu shubo macluumaadka sidaha soo noqnoqda indhaha. Digniinta la habeeyey waxaa lagu dhaqmaa transducer-ka-electro-acoustic ee qaabka signalka korantada (habaynta baaxadda), iyo calaamadda koronto ee u dhiganta waxaa loo beddelaa goobta ultrasonic. Marka mowjadda iftiinku ay dhex marto dhexdhexaadiyaha acousto-optic, sidaha indhaha waa la habeeyey oo noqda hirar xoog leh oo "xambaarsan" macluumaadka.

04 Magneto-optical modulation
Habbaynta Magneto-optic waa codsiga saamaynta wareega indhaha ee Faraday. Marka mowjadaha iftiinku ku faafo dhexdhaxaadka magneto-optical dhexda oo barbar socda jihada magnetic field, ifafaale wareegitaanka diyaaradda polarization ee iftiinka toosan waxaa loo yaqaan rotation magnet.
Goob birlabeed joogto ah ayaa lagu dabaqaa dhexdhexaadka si loo gaaro saturation magnetic. Jihada magnetic-circuit waxay ku taal jihada axial ee dhexdhexaadka ah, wareegtada Faradayna waxay ku xiran tahay axial field magnetic. Sidaa darteed, iyada oo la xakameynayo hadda ee gariiradda-soo noqnoqda sare iyo beddelidda xoogga magnetic ee calaamadda axial, wareegga wareegga diyaaradda gariirrada indhaha ayaa la xakameyn karaa, si iftiinka iftiinka iftiinka iyada oo loo marayo polarizer uu isbeddelayo isbeddelka θ xagasha. , si loo gaaro habayn.