Ea pele, phetoho ea ka hare le phetoho ea kantle
Ho ya ka kamano e amanang pakeng tsa modulator le laser,phetoho ea lasere ka aroloa ka modulation ea ka hare le modulation ea kantle.
01 phetoho ea kahare
Letšoao la modulation le etsoa ts'ebetsong ea ho sisinyeha ha laser, ke hore, liparamente tsa ho sisinyeha ha laser lia fetoloa ho latela molao oa lets'oao la modulation, e le ho fetola litšobotsi tsa tlhahiso ea laser le ho fihlela modulation.
(1) Laola mohloli oa pompo ea laser ka kotloloho ho fihlella phetoho ea matla a tlhahiso ea laser le hore na e teng, e le hore e laoloe ke phepelo ea motlakase.
(2) Karolo ea modulation e beoa ka har'a resonator, 'me phetoho ea litšobotsi tsa' mele tsa karolo ea modulation e laoloa ke lets'oao la ho fetola liparamente tsa resonator, ka hona ho fetola litšobotsi tsa tlhahiso ea laser.
02 Phetolo ea kantle
Ho feto-fetoha ha lebone ka ntle ke karohano ea tlhahiso le ho feto-fetoha ha lebone ka laser. Ho bolela ho jarisoa ha lets'oao le fetotsoeng kamora ho thehoa ha laser, ke hore, modulator e beoa tseleng ea optical ka ntle ho resonator ea laser.
Motlakase oa lets'oao la modulation o eketsoa ho modulator ho etsa hore litšobotsi tse ling tsa 'mele tsa modulator li fetohe,' me ha laser e feta ho eona, liparamente tse ling tsa leqhubu la leseli lia fetoloa, ka hona li jara tlhahisoleseling e lokelang ho fetisoa. Ka hona, modulation ea kantle ha se ho fetola liparamente tsa laser, empa ke ho fetola liparamente tsa laser e hlahisoang, joalo ka matla, maqhubu, jj.
Ea bobeli,modulator ea laserho hlophisa
Ho latela mokhoa o sebetsang oa modulator, e ka aroloa ka lihlophaphetoho ea electro-optic, phetoho ea acoustooptic, phetoho ea magneto-optic le phetoho e tobileng.
01 Modulation e tobileng
Motlakase o kgannang walaser ea semiconductorkapa diode e ntšang leseli e fetoloa ka ho toba ke lets'oao la motlakase, e le hore lets'oao le hlahisoang le fetoloe ka phetoho ea lets'oao la motlakase.
(1) Phetoho ea TTL ka ho feto-fetoha ha molumo ka kotloloho
Letšoao la dijithale la TTL le eketsoa phepelong ea motlakase oa laser, e le hore hona joale ea drive ea laser e ka laoloa ka lets'oao la kantle, ebe maqhubu a tlhahiso ea laser a ka laoloa.
(2) Phetoho ea analoge ka ho feto-fetoha ha molumo ka kotloloho
Ntle le lets'oao la analog la phepelo ea motlakase oa laser (amplitude e ka tlase ho 5V leqhubu la lets'oao la phetoho e sa reroang), le ka etsa hore lets'oao la kantle le kenye motlakase o fapaneng o tsamaellanang le hona joale ha ho khanna ha laser, ebe le laola matla a tlhahiso ea laser.
02 Modulation ea electro-optic
Ho feto-fetoha ha motlakase ho sebedisa phello ya electro-optic ho bitswa ho feto-fetoha ha motlakase ka electro-optic. Motheo wa mmele wa ho feto-fetoha ha motlakase ka electro-optic ke phello ya motlakase ka electro-optic, ke hore, tlasa ts'ebetso ya tshimo ya motlakase e sebediswang, index ya refractive ya dikristale tse ding e tla fetoha, mme ha leqhubu la lesedi le feta ka hara sedikadikwe sena, dibopeho tsa phetiso ya motlakase di tla angwa le ho fetolwa.
03 Modulation ea Acousto-optic
Motheo oa 'mele oa phetoho ea acousto-optic ke phello ea acousto-optic, e bolelang ketsahalo ea hore maqhubu a leseli a hasanngoa kapa a hasanngoa ke tšimo ea maqhubu a phahametseng tlhaho ha a ntse a ata ka har'a seaplane. Ha index ea refractive ea seaplane e fetoha nako le nako ho theha grating ea index ea refractive, diffraction e tla etsahala ha leqhubu la leseli le ata ka har'a seaplane, 'me matla, maqhubu le tataiso ea leseli la diffractive li tla fetoha ka phetoho ea tšimo ea maqhubu a hlahisoang ke supergenerated.
Modulation ea acousto-optic ke ts'ebetso ea 'mele e sebelisang phello ea acousto-optic ho kenya tlhahisoleseling ho carrier ea maqhubu a optical. Letšoao le fetotsoeng le sebetsa ho transducer ea electro-acoustic ka mokhoa oa lets'oao la motlakase (modulation ea amplitude), 'me lets'oao la motlakase le tsamaellanang le fetoloa tšimo ea ultrasonic. Ha leqhubu la leseli le feta ka har'a acousto-optic medium, carrier ea optical ea fetoloa 'me e fetoha leqhubu le fetotsoeng matla le "jarang" tlhahisoleseling.
04 Modulation ea Magneto-optical
Modulation ea Magneto-optic ke ts'ebeliso ea phello ea potoloho ea optical ea motlakase ea Faraday. Ha maqhubu a khanya a ata ka har'a magneto-optical medium e tsamaellanang le tataiso ea matla a makenete, ketsahalo ea ho potoloha ha sefofane sa polarization sa khanya e nang le polarized e otlolohileng e bitsoa potoloho ea makenete.
Matla a makenete a sa fetoheng a sebediswa ho sehatsetsi ho fihlella ho tlala ha makenete. Tataiso ya matla a makenete a potoloho e ka lehlakoreng la axial la sehatsetsi, mme ho potoloha ha Faraday ho itshetlehile ka matla a makenete a axial current. Ka hona, ka ho laola matla a khoele ya maqhubu a hodimo le ho fetola matla a matla a makenete a letshwao la axial, Angle ya ho potoloha ya sefofane sa ho thothomela ha optical e ka laolwa, e le hore amplitude ya lesedi ka hara polarizer e fetohe ka phetoho ya Angle ya θ, e le ho fihlella modulation.
Nako ea poso: Pherekhong-08-2024