Chiikushandurwa kwelasertekinoroji
Chiedza rudzi rwemafungu emagetsi ane mafrequency akakwira. Chine kubatana kwakanaka saka, semafungu emagetsi emagetsi akamboshandiswa (akadai semaredhiyo nematerevhizheni), chinogona kushandiswa semutakuri wekutumira ruzivo. Ruzivo "runotakurwa" nelaser (kusanganisira mutauro, zvinyorwa, mifananidzo, zviratidzo, nezvimwewo) runotumirwa kumugamuchiri kuburikidza nedzimwe nzira dzekutumira (mhepo, mafiber emaziso, nezvimwewo), uye rwozoonekwa uye rwodzoserwa kuruzivo rwepakutanga neoptical receiver. Maitiro ekuisa ruzivo palaser anonzi modulation, uye mudziyo unoita izvi unonzi modulator. Pakati pawo, laser inonzi carrier wave; Ruzivo rwe low-frequency runoita basa rekudzora runonzi modulated signal.
Kuchinja kweLaser kunogona kukamurwa kuva mukati memukati uye kunze kwemukati.
Kuchinja kwemukati: Kunoreva kurodha kwezviratidzo zvakagadziriswa panguva yekushanda kwelaser, ndiko kuti, kushandisa zviratidzo zvakagadziriswa kushandura maparamita ekuchinja kwelaser, nokudaro kuchichinja hunhu hwe laser output kuti kubudirire kuchinja. Nzira dzekushandura kwemukati dzinosanganisira: 1. Kudzora zvakananga simba repombi yelaser kuti kubudirire kusimba kwe laser inobuda yakagadziriswa. Simba nekuvapo kwezvinobuda zvese zvinodzorwa nemagetsi. Kana chiratidzo chichatumirwa chikashandiswa kudzora simba relaser, zvichiita shanduko dzemagetsi kuburikidza nelaser inodzorwa nechiratidzo, ipapo laser inoburitswa ichadzorwawo nechiratidzo. 2. Zvinhu zvekuchinja zvinoiswa mukati me resonant cavity, uye hunhu hwemuviri hwezvinhu zvekuchinja zvinodzorwa nezviratidzo kuti zvichinje, nokudaro zvichichinja maparamita e resonant cavity uye zvichichinja hunhu hwe laser output kuti kubudirire kuchinja. Kubatsira kwekushandura kwemukati ndiko kushanda kwayo kwakanyanya kwekuchinja. Dambudziko nderekuti sezvo modulator yakaiswa mukati megomba, zvakafanana nekuwedzera kurasikirwa mukati megomba, kuderedza simba rekubuda, uye bandwidth yemodulator inoganhurirwa nepassband yegomba re resonant.
Kuchinja kwekunze: Kunoreva kuiswa kwemodulator munzira ye optical kunze kwe laser mushure mekunge laser yagadzirwa, uye hunhu hwemuviri hwemodulator hunochinjwa ne modulation signal. Kana laser inopfuura nepakati pe modulator, imwe parameter ye light wave ichagadziriswa. Chakanakira che external modulation ndechekuti haikanganisi simba rekubuda kwe laser uye bandwidth yejenareta haigumiriswi ne passband ye resonant cavity. Dambudziko nderekuti modulation efficiency yakaderera.
Kuchinja kweLaser kunogona kupatsanurwa muzvikamu zviviri: amplitude modulation, frequency modulation, phase modulation uye intensity modulation, nezvimwewo zvichienderana ne modulation yayo. Ma modulators akafanana anosanganisiramamodulator echikamu, mamodulator esimba, nezvimwewo. Kunze kwe electro-optic intensity modulation yataurwa pamusoro apa uye electro-optic phase modulation, Kune mhando dzakawanda dzemamodulator elaser, zvakaita se transversemamodulator emagetsi-optic, mamodulators ekufamba kwemagetsi emagetsi, mamodulators emagetsi emagetsi eKerr, mamodulators emagetsi emagetsi emagetsi, mamodulators emagetsi emagetsi, mamodulators emagetsi emagetsi emagetsi uye mamodulators echiedza chepakati, nezvimwewo.
Nguva yekutumira: Chivabvu-13-2025