Ikoreshwa rya tekinoroji ya optique ya fibre optique Igice cya kabiri

Ikoreshwa rya tekinoroji ya optique ya fibre optique Igice cya kabiri

2.2 Gukuraho umurongo umweInkomoko

Kumenyekanisha laser imwe yumurambararo wohanagura ni ngombwa kugenzura ibintu bifatika byigikoresho murilasercavity (mubisanzwe hagati yumurambararo wo hagati wumurongo wogukora), kugirango ugere kugenzura no gutoranya uburyo bwo guhindagurika burebure bwimyanya ndende, kugirango ugere kumigambi yo guhuza ibisohoka byumuraba. Hashingiwe kuri iri hame, nko mu myaka ya za 1980, kumenyekanisha fibre fibre ishobora kugerwaho ahanini no gusimbuza isura ya nyuma ya lazeri hamwe no gufata ibyuma bitandukanya ibintu, no guhitamo uburyo bwa laser cavity ukoresheje kuzenguruka intoki no guhuza ibice bitandukanya. Muri 2011, Zhu n'abandi. Byakoreshejwe Muyunguruzi kugirango ugere kumurongo umwe-wumurongo wa laser isohoka hamwe numurongo muto. Mu mwaka wa 2016, Rayleigh linewidth compression yakoreshejwe muburyo bwo kwikuramo kabiri-bivuze, ni ukuvuga ko imbaraga zashyizwe kuri FBG kugirango habeho guhuza imirongo ibiri ya lazeri, kandi ibyasohotse bya laser linewidth byakurikiranwe icyarimwe, bikabona umurongo uhuza umurongo wa 3 nm. Uburebure-bubiri buringaniye busohoka hamwe n'umurongo w'ubugari bwa Hz 700. Muri 2017, Zhu n'abandi. yakoresheje graphene na micro-nano fibre Bragg grating kugirango ikore filteri ya optique ihindagurika, hanyuma ihujwe na tekinoroji ya Brillouin laser yo kugabanya, yakoresheje ingaruka zifotora ya graphene hafi ya 1550 nm kugirango igere kumurongo wa laser uri munsi ya 750 Hz hamwe na fotokonti yihuta kandi gusikana neza kuri 700 MHz / ms muburebure bwa 3.67 nm. Nkuko bigaragara ku gishushanyo cya 5. Uburyo bwo kugenzura uburebure bwavuzwe haruguru ahanini bumenya uburyo bwo guhitamo uburyo bwa laser muguhindura mu buryo butaziguye cyangwa butaziguye guhinduranya umurongo wa passband hagati yumurongo wigikoresho kiri mu cyuho cya laser.

Igishushanyo 5 (a) Gushiraho igeragezwa rya optique-igenzurwa nuburebure bwumurongo-fibre laserna sisitemu yo gupima;

(b) Ibisohoka bisohoka mubisohoka 2 hamwe no kuzamura pompe igenzura

2.3 Inkomoko yumucyo ya laser

Iterambere ryumucyo wera ryahuye mubyiciro bitandukanye nka halogen tungsten itara, itara rya deuterium,semiconductor laserna supercontinuum isoko yumucyo. By'umwihariko, urumuri rwitwa supercontinuum, rwishimiwe na pultosekond cyangwa picosekond pulses zifite imbaraga zidasanzwe, zitanga ingaruka zidafite umurongo wibicuruzwa bitandukanye muri waveguide, kandi spekiteri yagutse cyane, ishobora gutwikira umurongo uva mumucyo ugaragara kugeza hafi ya infragre, kandi ifite ubwuzuzanye bukomeye. Mubyongeyeho, muguhindura ikwirakwizwa no kutagira umurongo wa fibre idasanzwe, spécran yayo irashobora no kwaguka kugeza kumurongo wo hagati. Ubu bwoko bwa laser isoko yakoreshejwe cyane mubice byinshi, nka optique coherence tomografiya, gutahura gaze, amashusho yibinyabuzima nibindi. Bitewe no kugabanya inkomoko yumucyo hamwe nuburyo budafite umurongo, spercontinuum ya mbere yakozwe cyane cyane na laser-pompe ya pompe optique kugirango ikore spercontinuum murwego rugaragara. Kuva icyo gihe, fibre optique yagiye ihinduka uburyo bwiza bwo kubyara umurongo mugari wa supercontinuum kubera ko nini ya coefficient nini idafite umurongo hamwe nuburyo bwo kohereza buto. Ingaruka nyamukuru zidafite umurongo zirimo kuvanga imiraba ine, guhindagurika kwa modulasiyo, kwishyiriraho icyiciro, guhinduranya ibice, kugabana soliton, gutandukanya Raman, guhinduranya soliton, inshuro nyinshi, nibindi, kandi igipimo cya buri ngaruka nacyo kiratandukanye ukurikije ubugari bwimisemburo yimitsi ishimishije no gukwirakwiza fibre. Muri rusange, ubu urumuri rwa supercontinuum rugamije cyane cyane kunoza ingufu za lazeri no kwagura intera, no kwitondera kugenzura kwayo.

3 Incamake

Uru rupapuro ruvuga muri make kandi rusubiramo inkomoko ya laser ikoreshwa mugushigikira tekinoroji ya fibre sensibre, harimo lazeri ntoya, umurongo umwe uhuza lazeri hamwe na lazeri yera. Porogaramu ibisabwa hamwe niterambere ryimiterere ya laseri murwego rwa fibre sensing yatangijwe muburyo burambuye. Mugusesengura ibyo basabwa hamwe niterambere ryiterambere, hanzuwe ko isoko nziza ya laser yo gukoresha fibre sensibre ishobora kugera kuri ultra-تارufi na ultra-stabilite ya laser isohoka mugice icyo aricyo cyose nigihe icyo aricyo cyose. Kubwibyo, dutangirana numurongo mugari wubugari bwa laser, guhuza umurongo mugari wubugari bwa laser na lazeri yumucyo wera hamwe no kwaguka kwagutse, kandi dushakisha uburyo bwiza bwo kumenya isoko nziza ya laser yo kwifashisha fibre dukoresheje isesengura ryiterambere ryabo.