Ubwoko bwa modulator za laser

Ubwa mbere, uburyo bwo guhinduranya imbere n'uburyo bwo guhinduranya hanze
Dukurikije isano iri hagati ya modulator na laser,guhinduranya imikoreshereze ya laserishobora kugabanywamo modulation y'imbere n'iy'inyuma.

01 Impinduka z'imbere
Ibimenyetso bya modulation bikorwa mu gihe cyo kuzunguruka kwa laser, ni ukuvuga ko ibipimo bya modulation ya laser bihinduka hakurikijwe itegeko ry'ikimenyetso cya modulation, kugira ngo hahindurwe imiterere y'umusaruro wa laser kandi hagerwe ku ihinduka.
(1) Kugenzura neza isoko ya pompe ya laser kugira ngo ugere ku ihinduka ry'ubukana bwa laser isohoka n'uko ihari, kugira ngo igenzurwe n'amashanyarazi.
(2) Igice cy’impinduka gishyirwa muri resonator, kandi impinduka z’imiterere y’igice cy’impinduka zigenzurwa n’ikimenyetso cyo guhindura ibipimo bya resonator, bityo bigahindura imiterere y’umusaruro wa laser.

02 Guhinduranya ibintu hanze
Guhinduranya isura y'inyuma ni ugutandukanya gukora no guhinduranya isura ya laser. Bivuga uburyo ikimenyetso cyahinduwe gishyirwa mu mwanya nyuma yo gukora laser, ni ukuvuga ko modulator ishyirwa mu nzira y'urumuri hanze ya resonator ya laser.
Umuvuduko w'ikimenyetso cy'impinduka (voltage) wongerwa kuri modulator kugira ngo ibintu bimwe na bimwe bifatika by'icyiciro cya modulator bihinduke, kandi iyo laser inyuze muri yo, bimwe mu bipimo by'urumuri birahinduka, bityo bigatwara amakuru agomba koherezwa. Kubwibyo, modification yo hanze ntabwo ari uguhindura ibipimo bya laser, ahubwo ni uguhindura ibipimo bya laser isohora, nk'ubukana, inshuro, n'ibindi.

Icya kabiri,modulator ya lasergushyira mu byiciro
Dukurikije uburyo modulator ikora, ishobora gushyirwa mu byiciromodulation ya electro-optique, uburyo bwo guhinduranya imiterere y'amajwi, uburyo bwo guhinduranya imiterere y'amajwi n'uburyo bwo guhinduranya imiterere y'amajwi mu buryo butaziguye.

01 Guhindura imiterere y'ibintu mu buryo butaziguye
Umuvuduko w'amashanyarazi walaser ya semiconductorcyangwa diode itanga urumuri ihinduka neza hakoreshejwe ikimenyetso cy'amashanyarazi, ku buryo urumuri rusohoka ruhinduka bitewe n'impinduka z'ikimenyetso cy'amashanyarazi.

(1) Guhindura TTL mu buryo butaziguye
Itangazo rya digitale rya TTL ryongerwa ku ngufu za laser, kugira ngo umuvuduko wa laser drive ubashe kugenzurwa binyuze mu kimenyetso cyo hanze, hanyuma umurongo w'isohoka rya laser ugashobora kugenzurwa.

(2) Guhinduranya uburyo bwa analog mu guhinduranya uburyo butaziguye
Uretse ikimenyetso cya analog cy’amashanyarazi ya laser (amplitude iri munsi ya 5V ihindagurika ry’ibimenyetso), gishobora gutuma ikimenyetso cyo hanze cyuzuza voltage zitandukanye zijyanye na laser zitandukanye, hanyuma kikagenzura imbaraga za laser zisohoka.

02 Uburyo bwo guhindura amashanyarazi (Electro-optique modulation)
Guhinduranya hakoreshejwe ingaruka za electro-optic byitwa electro-optic modulation. Ishingiro ry’imikorere ya electro-optic ni ingaruka za electro-optic, ni ukuvuga, iyo amashanyarazi akoreshejwe, imiterere y’urumuri rwa kristu zimwe na zimwe irahinduka, kandi iyo urumuri runyuze muri ubu buryo, imiterere yarwo izahinduka kandi igahinduka.

03 Uburyo bwo guhindura acousto-optique
Ishingiro ry’imikorere ya acousto-optic ni ingaruka ya acousto-optic, yerekeza ku kintu gituma imiraba y’urumuri ikwirakwira cyangwa igatatanywa n’umuraba udasanzwe iyo ukwirakwira mu buryo bw’ikirere. Iyo ikigereranyo cyo kugarura urumuri cy’umuraba gihinduka rimwe na rimwe kikarema icyuma giteranya imiterere y’urumuri, imiterere y’urumuri izabaho iyo umuraba w’urumuri ukwirakwira mu buryo bw’ikirere, kandi imbaraga, inshuro n’icyerekezo by’urumuri rukwirakwiza imiraba bizahinduka hamwe n’impinduka z’umuraba uhinduka.
Guhinduranya amajwi ya acousto-optic ni inzira ikoreshwa mu buryo bw'umubiri ikoresha ingaruka za acousto-optic kugira ngo ishyire amakuru kuri carrier y'amajwi ya optical. Ikimenyetso cyahinduwe gikoreshwa kuri transducer ya electro-acoustic mu buryo bw'ikimenyetso cy'amashanyarazi (amplitude modulation), maze ikimenyetso cy'amashanyarazi gihinduka umuyoboro wa ultrasonic. Iyo urumuri runyuze muri acousto-optic medium, carrier ya optical irahindurwa maze ikaba umuyoboro wa modulated intensity "utwara" amakuru.

04 Uburyo bwo guhindura imiterere ya Magneto-optical
Uburyo bwo guhinduranya amashanyarazi hakoreshejwe magneto-optic ni uburyo Faraday yakoreshaga mu kuzunguruka kw'amashanyarazi. Iyo imiraba y'urumuri ikwirakwira mu buryo bwa magneto-optical ijyanye n'icyerekezo cy'umurima wa rukuruzi, uburyo bwo kuzunguruka kw'urumuri rwa polarized rwitwa rotation magnetic.
Imbaraga za rukuruzi zihoraho zishyirwa kuri icyo cyuma kugira ngo haboneke imbaraga za rukuruzi. Icyerekezo cy'imbaga ya rukuruzi y'uruziga kiri mu cyerekezo cy'umurongo, kandi kuzenguruka kwa Faraday biterwa n'imbaga ya rukuruzi y'umuyoboro w'amashanyarazi. Kubwibyo, mu kugenzura umuyoboro wa coil ifite frequency nyinshi no guhindura imbaraga za rukuruzi z'ikimenyetso cy'umurongo w'amashanyarazi, inguni yo kuzenguruka y'umuyoboro w'amashanyarazi ishobora kugenzurwa, ku buryo uburebure bw'urumuri runyura muri polarizer buhinduka hamwe n'impinduka za inguni ya θ, kugira ngo hagerwe ku ihinduka.