Ụdị modulators laser

Nke mbụ, ngbanwe nke ime na mgbanwe mpụga
Dabere na mmekọrịta dị n'etiti modulator na laser, nkemodul laserenwere ike kewaa n'ime modulation na mpụta modulation.

01 ime mgbanwe
A na-eme akara ngosi mgbanwe na usoro nke laser oscillation, ya bụ, a na-agbanwe paramita nke laser oscillation dị ka iwu nke mgbama modul, iji gbanwee àgwà nke mmepụta laser ma nweta mgbanwe.
(1) Kpọmkwem na-achịkwa isi iyi mgbapụta laser iji nweta modulation nke mmepụta laser ike na ma ọ dị, nke mere na ọkụ na-achịkwa ya.
(2) A na-etinye ihe na-agbanwe agbanwe na resonator, na mgbanwe nke njirimara anụ ahụ nke ihe mgbagwoju anya na-achịkwa akara ngosi iji gbanwee paramita nke resonator, si otú ahụ na-agbanwe àgwà mmepụta nke laser.

02 Mgbanwe nke mpụga
Mgbanwe nke mpụga bụ nkewa nke ọgbọ laser na modulation. Na-ezo aka na ntinye nke mgbaàmà modulated mgbe emechara laser, ya bụ, a na-etinye modulator n'ụzọ anya n'èzí laser resonator.
A na-agbakwunye voltaji mgbaama modulator na modulator iji mee ka ụfọdụ njirimara anụ ahụ nke modulator gbanwee, na mgbe laser gafere ya, a na-emegharị ụfọdụ akụkụ nke ebili mmiri ọkụ, si otú a na-ebu ozi a ga-ebufe. Ya mere, mgbanwe n'èzí abụghị ịgbanwe ihe ngosi laser, kama ọ na-agbanwe usoro nke laser mmepụta, dị ka ike, ugboro ugboro, na ihe ndị ọzọ.

Nke abụọ,modulator lasernhazi ọkwa
Dabere na usoro ọrụ nke modulator, enwere ike kewaa ya n'imeelectro optic modulation, Acoustooptic modulation, magneto-optic modulation na kpọmkwem modulation.

01 Direct modulation
Oge ịnya ụgbọ ala nkesemiconductor laserma ọ bụ diode na-eme ka ọkụ na-eme ka ọkụ eletrik gbanwee ozugbo, nke mere na ọkụ ọkụ na-emepụta na-agbanwe na mgbanwe nke mgbaàmà eletrik.

(1) TTL modulation na ngbanwe ozugbo
A na-agbakwụnye akara ngosi dijitalụ TTL na ọkụ ọkụ laser, nke mere na laser mbanye ugbu a nwere ike ịchịkwa site na mgbama mpụga, mgbe ahụ enwere ike ịchịkwa oge mmepụta laser.

(2) Analog modulation na kpọmkwem modulation
Na mgbakwunye na akara ngosi analọgụ ọkụ laser (njupụta na-erughị 5V na-agbanwe agbanwe agbanwe agbanwe), nwere ike ime ka mgbaama mpụga dị iche iche voltaji kwekọrọ na laser dị iche iche mbanye ugbu a, wee chịkwaa ike laser mmepụta.

02 Electro-optic modulation
Mgbanwe site na iji mmetụta eletrọ-optic bụ nke a na-akpọ mgbanwe mgbanwe electro-optic. Ndabere anụ ahụ nke mgbanwe mgbanwe electro-optic bụ mmetụta electro-optic, ya bụ, n'okpuru ọrụ nke ọkụ eletrik etinyere, ihe nrịbama nke ụfọdụ kristal ga-agbanwe, na mgbe ọkụ ọkụ na-agafe na nke a, njirimara nnyefe ya ga-agbanwe. a ga-emetụta ma gbanwee.

03 Acousto-optic modulation
Ndabere anụ ahụ nke ụda ụda acousto-optic bụ mmetụta acousto-optic, nke na-ezo aka n'ihe na-eme ka ebili mmiri ọkụ na-agbasa ma ọ bụ gbasasịa site na mpaghara ebili mmiri karịrị nke mmadụ mgbe ọ na-agbasa na etiti. Mgbe index refractive nke a ọkara na-agbanwe kwa oge ka ọ na-etolite a refractive index grating, diffraction ga-eme mgbe ìhè ife propagate na ọkara, na ike, ugboro na ntụziaka nke diffractive ìhè ga-agbanwe na mgbanwe nke supergenerated ubi ife.
Acousto-optic modulation bụ usoro anụ ahụ nke na-eji mmetụta acousto-optic na-ebu ozi na ngwa ngwa ngwa anya. A na-eme ihe mgbama a gbanwere na transducer electro-acoustic n'ụdị mgbaàmà eletriki (mgbanwe njupụta), na akara ọkụ eletrik kwekọrọ na-agbanwe na mpaghara ultrasonic. Mgbe ebili mmiri na-agafe n'okirikiri acousto-optic, a na-emegharị onye na-ebu ngwa anya wee ghọọ ebili mmiri gbanwere ike nke "na-ebu" ozi.

04 Magneto-optical modulation
Magneto-optic modulation bụ ngwa nke mmetụta ntụgharị anya eletrọnịkị nke Faraday. Mgbe ebili mmiri ọkụ na-agbasa site na magneto-optical medium na ntụzịaka nke oghere ndọta, a na-akpọ ihe ngbanwe nke ụgbọ elu polarization nke ìhè polarized nke linearly magnetik.
A na-etinye oghere ndọta mgbe niile na ọkara iji nweta saturation magnetik. Ntuziaka nke oghere magnetik sekit dị na ntụziaka axial nke ọkara, na ntụgharị Faraday na-adabere na oghere magnetik dị ugbu a. Ya mere, site n'ịchịkwa ihe dị ugbu a nke eriri igwe dị elu ma na-agbanwe ike magnetik nke mgbaàmà axial, a pụrụ ịchịkwa ntụgharị ntụgharị nke ụgbọ elu vibration anya, nke mere na njupụta ìhè site na polarizer na-agbanwe na mgbanwe nke θ Angle. , iji nweta modulation.