Ting Liu, Yaowei Li, Shixun Dai, Xunsi Wang, Pengfei Wang, Peiqing Zhang. Research Progress on Fabrication and Application of Mid-Infrared Glass Fiber Gratings[J]. Laser & Optoelectronics Progress, 2022, 59(15): 1516015
- Laser & Optoelectronics Progress
- Vol. 59, Issue 15, 1516015 (2022)
![Schematic diagram of fluoride fiber laser device. (a) Experimental setup of 30.5 W all-fiber laser operating at 2.94 µm[13]; (b) experimental setup of 41.6 W fluoride fiber laser operating at 2.82 µm[14]](/richHtml/lop/2022/59/15/1516015/img_01.jpg)
Fig. 1. Schematic diagram of fluoride fiber laser device. (a) Experimental setup of 30.5 W all-fiber laser operating at 2.94 µm[13]; (b) experimental setup of 41.6 W fluoride fiber laser operating at 2.82 µm[14]
![Fabrication process of chalcogenide fiber micro-FBG[31]. (a) Schematic diagram of grating fabrication device; (b) typical optical micrograph of imaging system during grating fabrication process; (c) optical microscope image and (d) SEM image of chalcogenide micro-FBG with diameter of 2.4 µm](/richHtml/lop/2022/59/15/1516015/img_02.jpg)
Fig. 2. Fabrication process of chalcogenide fiber micro-FBG[31]. (a) Schematic diagram of grating fabrication device; (b) typical optical micrograph of imaging system during grating fabrication process; (c) optical microscope image and (d) SEM image of chalcogenide micro-FBG with diameter of 2.4 µm
![Grating structures fabricated in chalcogenide glass bulk and fiber by femtosecond laser direct writing[32]](/Images/icon/loading.gif){kind=icon}
Fig. 3. Grating structures fabricated in chalcogenide glass bulk and fiber by femtosecond laser direct writing[32]
Fig. 4. Schematic diagram of LPFG fabrication by mechanical stress device[36]
Fig. 5. Microscopic images of passive three-core tellurite FBG structures[39]. (a) Top view; (b) side view
Fig. 6. Structure of 3.55 µm all-fiber laser[50]
Fig. 7. Schematic diagram of 3.55 µm gain-switched fiber laser[51]
Fig. 8. 3.34 μm cascaded Raman laser based on As2S3 fiber and relationship between average laser output power and pump power[65]
Fig. 9. 3.77 μm cascaded Raman fiber laser device based on As2S3 fiber grating[34]
Fig. 10. Schematic diagram of (a) first-order and (b) second-order Raman tellurite fiber lasers[71]
Fig. 11. LPFG stress sensor［76］. (a) Experimental setup; (b) transmission spectrum
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Table 1. Performance parameters of typical commercial fluoride fiber products
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Table 2. Research status of rare earth doped fluoride glass fiber and 3-4 µm mid-infrared fiber laser output
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