Igishushanyo mbonera cy'inzira y'urumuri cya laser ifite ubugari bwa fiber ya polarized

Igishushanyo mbonera cy'inzira y'urumuri rwa polarizedlaser ifite ubugari bw'umurongo muto

1. Incamake

Laser ifite ubugari bwa fibre ya polarized ya 1018 nm. Ubugari bw'umurambararo ni 1018 nm, imbaraga za laser zisohoka ni 104 W, ubugari bwa spectral bwa 3 dB na 20 dB ni ~21 GHz na ~72 GHz uko bikurikirana, igipimo cyo kuzimira kwa polarization ni >17.5 dB, kandi ubwiza bw'imirasire buri hejuru (2 x M - 1.62 na 2 y M) Asisitemu ya laserhamwe n'ubushobozi bwo kumanuka bwa 79% (∼1.63).

2. Ibisobanuro by'inzira y'urumuri

Murilaser ifite ubugari bwa fibre ya polarized, oscillator ya laser ifite polari igizwe n'udupira tubiri tw'udupira dukomeza polarizing hamwe n'udupira tubiri tw'uburebure bwa metero 1.5 dufite 10/125 μm ytterbium-doped double-clad polarizing-containing nk'uburyo bwo gukura. Igipimo cyo kwinjiza iyi fiber optique kuri 976 nm ni 5 dB/m. Oscillator ya laser ipomperwa na 976 nm ifite uburebure bwa wavelength-locked.laser ya semiconductorifite imbaraga ntarengwa za 27 W binyuze mu gikoresho gihuza polarity (1+1)×1 beam. Ingufu zo kugarura urumuri zifite ubushobozi bwo kugarura urumuri burenga 99%, naho bandwidth ya 3 dB reflection ni hafi 0.22 nm. Uburebure buke bwa grating ni 40%, naho bandwidth ya 3 dB reflection ni hafi 0.216 nm. Uburebure bwo hagati bwa gratings zombi buri kuri 1018 nm. Kugira ngo imbaraga zo gusohora za resonator ya laser n'igipimo cyo gufunga cya ASE, uburebure buke bwa grating bwatunganyijwe kugeza kuri 40%. Fibre y'inyuma ya grating yo kugarura urumuri ihuzwa na fibre yo gukura, mu gihe fibre y'inyuma ya grating yo kugarura urumuri izunguruka 90° ikahuzwa na fibre y'inyuma ya cladding filter. Bityo, aho uburebure bw'uburebure bwa grating yo kugarura urumuri bwihuta bwa grating yo kugarura urumuri bwihuta buhura n'ubw'uburebure bwa grating yo kugarura urumuri bwihuta bwa grating yo kugarura urumuri bwihuta. Muri ubu buryo, laser imwe gusa ikoresha polarized ishobora kuzenguruka mu mwobo wa resonant. Itara risigaye rya pompe mu mwobo wa fibre optique riyungururwa n'akayunguruzo k'ibumba kakorewe ubwabo kavanze mu mwobo wa resonant, maze umurizo w'ingurube usohoka ugashyirwa kuri dogere 8 kugira ngo hirindwe ko impera z'inyuma zigaruka kandi hatagira umwobo uhindagurika.

3. Ubumenyi bw'ibanze

Uburyo bwo gukora laser za fiber zikozwe mu buryo bwa "linearly polarized": Bitewe na "stress birefringence", fiber ikozwe mu buryo bwa "pear" ifite imirasire ibiri ya "orthogonal polarization axes", izwi ku izina rya "fast axis" na "slow axis". Muri rusange, kubera ko "refractive index" y'umurongo ugenda buhoro iruta iy'umurongo ugenda buhoro, "grating" yanditse kuri fiber ikozwe mu buryo bwa "polarization" ifite imirasire ibiri itandukanye yo hagati. Umwobo wa "resonant" wa laser ya fiber ikozwe mu buryo bwa "linearly polarized" ubusanzwe ugizwe n'imirasire ibiri ikozwe mu buryo bwa "polarization". Imirasire ya "low-reflection grating" na "high-reflection grating" ku murongo ugenda buhoro na "slow axis" birahura. Iyo "reflection bandwidth" ya "polarization-maintaining grating" ari mito bihagije, "transmission spectra" mu murongo ugenda buhoro n'icyerekezo cya "slow axis" birashobora gutandukana, kandi imirasire yombi ishobora kunyeganyega mu mwobo wa "resonant". Dukurikije ihame rya "dual-wavelength oscillation" rya "polarization-maintaining grating", mu igerageza, uburyo bwo gusudira bushobora gukoreshwa kugira ngo bugerweho. Mu gihe cyo gusudira, imigozi ikomeza polarisation y’imigozi ibiri irahuzwa. Muri ubu buryo, impera ebyiri zo kohereza za grating yo hejuru zihuye n’iza grating yo hasi, bityo umusaruro wa laser ufite uburebure bubiri ushobora kugerwaho.

Muri sisitemu nyayo zo kubungabunga imiterere ya laser, umurongo ugororotse ni ikimenyetso cy'ingenzi cyo gusuzuma imiterere y'umusaruro wa lasers zikozwe mu buryo bugororotse. Muri rusange, igihe cyo gushyiramo urumuri rwinshi kiruta icyo gushyiramo urumuri rwinshi. Kugira ngo lasers zikozwe mu buryo bugororotse zifite agaciro ka PER, umurongo umwe gusa wa polarization ugomba kunyeganyega. Iyo umurongo wihuta wa grating yoroshye uri ku murongo ugenda buhoro wa grating yoroshye, uburebure bw'umurambararo mu cyerekezo cyihuse cya grating yoroshye buhuye n'ubwo mu cyerekezo cyoroheje cya grating yoroshye, mu gihe umurongo uzenguruka mu cyerekezo cyoroheje cya grating yoroshye udahuye n'umurongo uzenguruka mu cyerekezo cyihuse cya grating yoroshye. Muri ubu buryo, umurongo umwe wa transmission ushobora kunyeganyega. Mu buryo nk'ubwo, iyo umurongo ugenda buhoro w'urukiramende rugaragaza urumuri ruri ku murongo ugenda vuba w'urukiramende rugaragaza urumuri rwinshi, uburebure bw'umurambararo w'urukiramende rugaragaza urumuri rwinshi buhuye n'ubw'umurongo ugenda vuba w'urukiramende rugaragaza urumuri rwinshi, mu gihe uburebure bw'urukiramende rw'urukiramende rugaragaza urumuri rwinshi budashobora guhura n'ubw'umurongo ugenda buhoro w'urukiramende rugaragaza urumuri rwinshi. Muri ubu buryo, uburebure bumwe bw'urukiramende bushobora no kunyeganyega. Uburyo bwombi bwavuzwe haruguru bushobora kugera ku musaruro wa laser ugaragaza urumuri wimbitse. Dukurikije ihame rya laser rigaragaza urumuri wimbitse wimbitse wimbitse, mu igerageza, uburyo bwo guhuza imiterere y'urukiramende bushobora gukoreshwa kugira ngo bugerweho. Iyo inguni ihuza imirasire y’impande zikomeza polarisation y’urukuta rurerure rw’urukuta rurerure n’urukuta rurerure rw’urukuta ruri hasi ari 90°, uburebure bw’urukuta mu cyerekezo cy’umurongo ugenda buhoro w’urukuta rurerure rw’urukuta rurerure buhuye n’uburebure bw’urukuta mu cyerekezo cy’umurongo urerure rw’urukuta rurerure rw’urukuta rurerure rw’urukuta rurerure, bityo umusaruro wa laser ya fiber ifite uburebure bumwe ishobora kugerwaho.