Chinese Optics Letters, Volume. 20, Issue 1, 012201(2022)
Theoretical and experimental analysis of second order Bragg resonance of 45° TFG and its fiber laser application Editors' Pick
Fig. 1. (a) Simulation of normalized index change at different exposure time; (b) simulation of second order reflectivity against exposure time.
Fig. 2. (a) Experimental and theoretical relationship between the 2nd-OBR wavelength and the grating tilt angle; (b) 2nd-OBR strength against the tilt angle.
Fig. 3. Measured PDL spectra of the corresponding grating within 30 nm spectrum range showing 2nd-OBR in both p polarization and
Fig. 4. Schematic of the demonstrated fiber laser using the 2nd-OBR generated by a 45° TFG.
Fig. 5. (a) Typical output spectrum of the fiber laser; (b) slope efficiency of the fiber laser.
Fig. 6. (a) PER spectra of the laser; (b) tuning ability demonstration of the fiber laser; (c) temperature sensitivity of the fiber laser; (d) output wavelength and amplitude variation of the fiber laser within 1 h in laboratory conditions.
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Qingguo Song, Bolin Ye, Xiangpeng Xiao, Chengjun Huang, Chengbo Mou, Zhijun Yan, Lin Zhang, "Theoretical and experimental analysis of second order Bragg resonance of 45° TFG and its fiber laser application," Chin. Opt. Lett. 20, 012201 (2022)
Category: Optical Design and Fabrication
Received: May. 11, 2021
Accepted: Jul. 30, 2021
Posted: Aug. 2, 2021
Published Online: Oct. 8, 2021
The Author Email: Zhijun Yan (yanzhijun@gmail.com)