Kutanga, Yemukati modulation uye yekunze modulation
Zvinoenderana nehukama hwehukama pakati pemodulator uye laser, iyolaser modulationinogona kukamurwa kuita modulation yemukati uye yekunze modulation.
01 Yemukati modulation
Chikwangwani cheCodulation chinoitwa mukuita kweLaser osers, ndiko kuti, paramende ye laser oscillation inoshandurwa zvinoenderana nemutemo chiratidzo cheiyo Laser
(1.
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02 Yekunze Modulation
Kutumira kwekunze ndiko kuparadzaniswa kwechizvarwa cheLaser uye kujairana. Inoreva kutakura kwechiratidzo chakaumbwa mushure mekuumbwa kweiyo laser, ndiko kuti, modulator yakaiswa munzira yepfungwa kunze kweiyo laser resonator.
Iyo yekunyora chiratidzo voltage inowedzerwa kuModulator kuti iite humwe hunhu hwechikamu cheModulate Naizvozvo, kushandurwa kwekunze hakusi kwekushandura iyo laser paramita, asi kuti ichinje paramita yekubuda laser, yakadai seyakawedzera, frequency, uye zvichingodaro.
Chepiri,laser modulatorkuiswa
Zvinoenderana neiyo inoshanda muchina wemodulator, inogona kuiswa mukatiElectro-Optic Modulation, kujairwa kwaAcoustooptic, magnets-Optic modulation uye kududzira zvakananga.
01 Direct Modulation
Kutyaira kwazvino kwesemiconductor laserkana kujekesa diode diode inoswededzwa zvakananga neyemagetsi chiratidzo, kuitira kuti mwenje unoburitsa unoswededzwa nekushandurwa kwechiratidzo chemagetsi.
(1) TTL modulation mumufananidzo wakananga
A TTL Digital Signal inowedzerwa kune Laser Power Supply, kuitira kuti Laser Dhivha iripo inogona kudzorwa kuburikidza nechiratidzo chekunze, uye ipapo laser yekubuda mari inogona kudzorwa.
(2) Analog modulation mune zvakananga kudhiza
Pamusoro peiyo Laser Simba Supply Analog Signal (implitude isingasviki 5V inopindirana Signal Voltage YemaWaCage inoenderana neLaser akasiyana drive razvino, wobva wadzora zvinobuda laser simba.
02 Electro-Optic Modulation
Kujairana uchishandisa Electro-Optics mhedzisiro inonzi Electro-Optic Modulation. Chimiro chemuviri cheElectro-Optic Modulation ndiye Electro-Opticcy munda wemagetsi anozochinja, uye kana humbowo hunopfuudza nepakati, hunhu hwayo hunopfuura huchakanganiswa uye hwakachinja.
03 Acousto-Optic Modulation
Hwaro hwepanyama hweAcousto-Optic modulation ndiyo acousto-optic maitiro, iyo inoreva chiitiko icho mafungu akaomeswa kana akapararira nemunda wemashura kana uchivaparadzira mune svikiro. Kana iyo indekisi yekudzokorora yekushanduka kwepakati nguva nenguva yekuumba index kuronga, kusiyana kuchawedzera kana kuti mwenje, kuwanda kwechiedza chakatsetseka kuchachinja neshanduko yemunda wekutanga wave.
Acousto-Optic modulation chiitiko chemuviri chinoshandisa acousto-optic mhedzisiro yekuisa ruzivo pane iyo Optical Frequency Mutakuri. Chiratidzo chakaumbwa chinoitwa pane electro-acoustic transducer muchimiro chechiratidzo chemagetsi (emagetsi emagetsi), uye chiratidzo chinoenderana chemagetsi chinoshandurwa muLoulthrasonic munda. Kana iyo Light wave ichipfuura nepakati peiyo-Oposto-Optic Svikiro, iyo Optical Carrier yakaunganidzwa uye inova yakanyanya kukwidziridzwa mafungu kuti "inotakura" ruzivo.
04 Magneto-Optical Modulation
Magneto-Optic modulation ishandiso yeFareday electromagnetic Optical kutenderera. Kana mafungu echiedza achiparadzira kuburikidza nemagineti-Optical yepakati kuti atungamire munda wemagineti, chiitiko chekutenderera chemwenje wetsetse wechiedza chinonzi magineti inotenderera.
Iyo nguva yekugara ichisvika munda inoiswa kune iyo svikiro kuti uwane magineti. Kutungamirirwa kwemagirazi wedunhu kuri munharaunda yeiyo yexial kutungamira kwesvikiro, uye kutenderera kwekutenderera kunoenderana neiyo exial razvino magineti munda. Naizvozvo, nekudzora iyo iripo yeakakwirira-frequency-frequency munda simba rechiratidzo chechiratidzo, zvekuti mwenje unodzorwa nekuchinja kweiyo angle, kuitira kuti ubate modulation.
Kutumira Nguva: Jan-08-2024