Naqshadeynta waddo indhaha ah oo ah laser-ka xargaha cidhiidhiga ah ee fiber-ka kala fog

Naqshadeynta waddo indhaha ah oo ah fiber kala qaybsanlaysarka ballaca xariiqda cidhiidhiga ah

1. Dulmar guud

1018 nm fiber polarized layser-ka oo leh ballac cidhiidhi ah. Mowjadda shaqada waa 1018 nm, awoodda wax soo saarka laysarka waa 104 W, ballaca muuqaalka ee 3 dB iyo 20 dB waa ~21 GHz iyo ~72 GHz siday u kala horreeyaan, saamiga dabar-goynta polarization-ku waa >17.5 dB, tayada fallaadhana waa sare (2 x M – 1.62 iyo 2 y M) Anidaamka laysarkaiyadoo hufnaanta jiirada ay tahay 79% (∼1.63).

2. Sharaxaadda waddada indhaha

Gudahafiber-ka kala qaybsan laser-ka cidhiidhiga ah, oscillator-ka laser-ka ee fiber-ka ee toosan ee polarized wuxuu ka kooban yahay labo shabag oo fiber-ka ilaaliya polarization-ka iyo 1.5-mitir oo dhererkiisu yahay 10/125 μm ytterbium-doped laba-jibbaaran oo polarization-ka ilaaliya oo ah dhexdhexaadka faa'iidada. Isugeynta nuugista ee fiber-kan indhaha ee 976 nm waa 5 dB/m. Oscillator-ka laser-ka waxaa ku shubaya hirarka 976 nm oo xiranlaysarka semiconductor-kaoo leh awood ugu badan oo ah 27 W iyada oo loo marayo isku-darka iftiinka ee ilaalinta polarity-ga (1+1)×1. Shabagga milicsiga sare wuxuu leeyahay milicsiga oo ka badan 99%, iyo ballaca milicsiga 3 dB waa qiyaastii 0.22 nm. Milicsiga hoose ee shabagga waa 40%, iyo ballaca milicsiga 3 dB waa qiyaastii 0.216 nm. Mowjadaha milicsiga dhexe ee labada shabag waa 1018 nm. Si loo dheellitiro awoodda wax soo saarka ee resonator-ka laser-ka iyo saamiga xakamaynta ASE, milicsiga hoose ee shabagga waxaa loo habeeyay 40%. Fiilada dabada ee shabagga milicsiga sare waxaa lagu daray fiilada faa'iidada, halka fiilada dabada ee shabagga milicsiga hoose lagu wareejiyay 90° oo lagu daray fiilada dabada ee shaandhada dahaarka. Sidaa darteed, booska ugu sarreeya ee mowjadaha milicsiga dhidibka degdega ah ee shabagga milicsiga sare wuxuu la mid yahay mowjadaha milicsiga dhidibka gaabiska ah ee shabagga milicsiga hoose. Sidan, hal laysar oo kala qaybsan ayaa ku ruxmi kara godka dhawaaqa. Iftiinka bamka ee ku haray dahaarka fiber-ka indhaha waxaa lagu sifeeyaa shaandho isku-dhafan oo lagu dhex daray godka dhawaaqa, dabada soo-saarkana waxaa loo gooyay 8° si looga hortago jawaab celinta wejiga iyo gariirka dulinka.

3. Aqoonta asalka ah

Habka loo soo saaro laysarka fiilada ee toosan ee kala fog: Sababtoo ah birefringence-ka cadaadiska, faybarka ilaalinta polarization-ka ee qaabka pear wuxuu leeyahay laba dhidib oo kala fog, oo loo yaqaan dhidibka dhaqsaha badan iyo dhidibka gaabiska ah. Guud ahaan, maadaama tusmada refractive-ka ee dhidibka gaabiska ah ay ka weyn tahay kan dhidibka dhaqsaha badan, shabagga lagu qoray faybarka ilaalinta polarization-ka wuxuu leeyahay laba mowjadood oo dhexe oo kala duwan. Godka resonant-ka ee leysar fiber ah oo toosan oo kala fog waxaa badanaa ka kooban yahay laba shabag oo ilaalin polarization-ka ah. Mowjadaha mowjadaha ee shabagga milicsiga hooseeya iyo shabagga milicsiga sare ee dhidibka dhaqsaha badan iyo dhidibka gaabiska ah ayaa u dhigma siday u kala horreeyaan. Marka baaxadda milicsiga ee shabagga ilaalinta polarization-ka ay ku filan tahay cidhiidhi, muuqaalka gudbinta ee dhidibka degdega ah iyo jihooyinka dhidibka gaabiska ah waa la kala saari karaa, labada mowjadoodna way gariiri karaan godka resonant-ka ah. Sida laga soo xigtay mabda'a oscillating-ka laba-mowjadood ee shabagga ilaalinta polarization-ka ah, tijaabada, habka alxanka isbarbar socda ayaa la qaadan karaa si loo gaaro. Inta lagu jiro alxanka, faasasyada ilaalinta kala-goysyada ee labada shabag ayaa la isku waafajiyaa. Sidan, labada meelood ee gudbinta ee shabagga milicsiga sare waxay u dhigmaan kuwa shabagga milicsiga hooseeya, sidaas darteedna wax soo saarka laysarka laba-waji leh ayaa la gaari karaa.

Nidaamyada dayactirka kala-goysyada laser-ka ee dhabta ah, leexashada toosan waa tilmaame muhiim ah oo lagu qiimeeyo sifooyinka wax soo saarka ee leysarka toosan ee kala-goysyada ah. Guud ahaan, muddada kala-goysyada sare ee ka-soo-baxa ayaa ka weyn kan kala-goysyada hoose ee ka-soo-baxa. Si loo gaaro leysarka toosan ee kala-goysyada leh oo leh qiime PER sare, hal meel oo ka-soo-baxa ah ayaa u baahan inuu gariiro. Marka dhidibka degdega ah ee kala-goysyada hoose ay ku taal dhidibka gaabiska ah ee kala-goysyada sare ee ka-soo-baxa, hirarka dhexe ee jihada dhidibka degdega ah ee kala-goysyada hoose waxay u dhigantaa tan jihada dhidibka gaabiska ah ee kala-goysyada sare ee ka-soo-baxa, halka ugu sarreysa ee gudbinta ee jihada dhidibka gaabiska ah ee kala-goysyada hoose aysan u dhigmin ugu sarreysa gudbinta ee jihada dhidibka degdega ah ee kala-goysyada sare. Sidan, hal meel oo ka-soo-bax ah ayaa la gariirin karaa. Sidoo kale, marka dhidibka gaabiska ah ee shabagga milicsiga hooseeya uu ku yaal dhidibka degdega ah ee shabagga milicsiga sare, hirarka dhexe ee dhidibka gaabiska ah ee shabagga milicsiga hooseeya wuxuu la mid yahay kan dhidibka degdega ah ee shabagga milicsiga sare, halka ugu sarreysa gudbinta ee dhidibka degdega ah ee shabagga milicsiga hooseeya uusan la mid ahayn kan dhidibka gaabiska ah ee shabagga milicsiga sare. Sidan, hal meel oo gudbinta ah ayaa sidoo kale gariiri kara. Labada hab ee kor ku xusan waxay gaari karaan wax soo saar laysar oo toosan oo polarized ah. Sida waafaqsan mabda'a hal-mowjad ee oscillation laser-ka toosan ee polarization-ka ee shabagga milicsiga, tijaabada, habka isku-xidhka orthogonal ayaa la qaadan karaa si loo gaaro. Marka xagasha isku-xidhka ee faasasyada ilaalinta kala-goysyada ee shabagga milicsiga sare iyo shabagga milicsiga hoose uu yahay 90°, meesha ugu sarreysa ee gudbinta ee jihada dhidibka gaabiska ah ee shabagga milicsiga sare waxay u dhigantaa meesha ugu sarreysa ee gudbinta ee jihada dhidibka degdega ah ee shabagga milicsiga hoose, sidaas darteedna wax soo saarka laser-ka fiber-ka ee hal-hir-wareegga toosan leh ayaa la xaqiijin karaa.