Isingeniso esifushane sobuchwepheshe be-laser modulator

Isingeniso esifushane se-laseri-modulatorubuchwepheshe
I-Laser iyigagasi le-electromagnetic elisebenzisa imvamisa ephezulu, ngenxa yokuhambisana kwayo okuhle, njengamagagasi e-electromagnetic endabuko (njengalawo asetshenziswa emsakazweni nakumabonakude), njengegagasi lokuthwala ukudlulisa ulwazi. Inqubo yokulayisha ulwazi ku-laser ibizwa ngokuthi i-modulation, kanti idivayisi eyenza le nqubo ibizwa ngokuthi i-modulator. Kule nqubo, i-laser isebenza njengomthwali, kanti isignali yemvamisa ephansi edlulisela ulwazi ibizwa ngokuthi isignali eguquliwe.
Ukuguqulwa kwe-laser kuvame ukuhlukaniswa ngokuguqulwa kwangaphakathi kanye nokuguqulwa kwangaphandle ngezindlela ezimbili. Ukuguqulwa kwangaphakathi: kubhekisela ekuguqulweni kwenqubo yokuguquguquka kwe-laser, okungukuthi, ngokuguqula isignali ukuze kushintshwe amapharamitha okunyakaza kwe-laser, ngaleyo ndlela kuthinte izici zokukhipha ze-laser. Kunezindlela ezimbili zokuguqulwa kwangaphakathi: 1. Lawula ngokuqondile ukunikezwa kwamandla okupompa kwe-laser ukuze ulungise ubukhali bokukhishwa kwe-laser. Ngokusebenzisa isignali ukulawula ukunikezwa kwamandla kwe-laser, amandla okukhishwa kwe-laser angalawulwa yisignali. 2. Izinto zokuguqulwa zibekwa ku-resonator, futhi izici zomzimba zalezi zinto zokuguqulwa zilawulwa yisignali, bese kuthi amapharamitha e-resonator ashintshwe ukuze kufezwe ukuguqulwa kokukhishwa kwe-laser. Inzuzo yokuguqulwa kwangaphakathi ukuthi ukusebenza kahle kokuguqulwa kuphezulu, kodwa ububi ukuthi ngoba i-modulator itholakala emgodini, izokwandisa ukulahlekelwa emgodini, inciphise amandla okukhipha, futhi i-bandwidth ye-modulator nayo izonqunyelwa yi-passband ye-resonator. Ukuguqulwa kwangaphandle: kusho ukuthi ngemva kokwakheka kwe-laser, i-modulator ibekwa endleleni yokukhanya engaphandle kwe-laser, futhi izici zomzimba ze-modulator ziyashintshwa ngesignali eguquliwe, futhi lapho i-laser idlula ku-modulator, ipharamitha ethile yegagasi lokukhanya izoguqulwa. Izinzuzo zokuguqulwa kwangaphandle ukuthi amandla okukhipha e-laser awathinteki futhi i-bandwidth yesilawuli ayinqunyelwe yi-passband ye-resonator. Ububi ukusebenza kahle kokuguqulwa okuphansi.
Ukuguqulwa kwe-laser kungahlukaniswa ngokuguqulwa kwe-amplitude, ukuguqulwa kwemvamisa, ukuguqulwa kwesigaba kanye nokuguqulwa kwamandla ngokwezakhiwo zayo zokuguqulwa. 1, ukuguqulwa kwe-amplitude: ukuguqulwa kwe-amplitude kuwukuguquguquka okushintsha i-amplitude yesithwali ngomthetho wesignali eguquliwe. 2, ukuguqulwa kwemvamisa: ukuguqula isignali ukushintsha imvamisa yokuguqulwa kwe-laser. 3, ukuguqulwa kwesigaba: ukuguqula isignali ukushintsha isigaba se-laser oscillation.

I-modulator yokuqina kwe-Electro-optical
Umgomo wokuguqulwa kwamandla kagesi-optic ukuqaphela ukuguqulwa kwamandla ngokwesimiso sokuphazamiseka kokukhanya okuhlanganisiwe ngokusebenzisa umphumela we-electro-optic wekristalu. Umphumela we-electro-optic wekristalu ubhekisela esimweni sokuthi inkomba yokukhanya kwekristalu iyashintsha ngaphansi kwesenzo sensimu kagesi yangaphandle, okuholela ekuhlukeni kwesigaba phakathi kokukhanya okudlula kukristalu ngezindlela ezahlukene zokuhlukanisa, ukuze isimo sokuhlukanisa ukukhanya sishintshe.

I-Electro-optic phase modulator
Isimiso sokuguquguqula isigaba se-Electro-optical: i-phase Angle ye-laser oscillation ishintshwa umthetho wesignali yokuguqula.

Ngaphezu kokuguqulwa kwe-electro-optic intensity kanye ne-electro-optic phase modulation engenhla, kunezinhlobo eziningi zama-laser modulator, njenge-transverse electro-optic modulator, i-electro-optic traveling wave modulator, i-Kerr electro-optic modulator, i-acousto-optic modulator, i-magnetooptic modulator, i-interference modulator kanye ne-spatial light modulator.