2021/10/18 by Kuei-Huei Lin, Lin, Kuei-Huei, Wen-Hsuan Kuan +1
Engineering · Physics and Astronomy · #Advanced Fiber Optic Sensors #Broadband #Dispersion-shifted fiber #Doping #FOS: Physical sciences #Fiber Bragg grating #Fiber laser #Fiber optic sensor #Grating #Materials science #Optical fiber #Optics #Optics (physics.optics) #Optoelectronics #Orbital Angular Momentum in Optics #Photonic Crystal and Fiber Optics #Physics #Polarization-maintaining optical fiber #Wavelength #Ytterbium #physics.optics
paper · pdf · doi:10.48550/arxiv.2110.09082
arxiv created 2021/10/18 · openalex publication_date 2021/10/18 · arxiv updated 2021/10/19 · openalex created_date 2021/10/25 · openalex updated_date 2026/08/05
Ultra-broadband long-period fiber grating with 10-dB bandwidth of 155 nm and 3-dB bandwidth of 415 nm is demonstrated around 1060 nm, which has been combined with a tunable ytterbium-doped fiber laser to generate optical doughnut beams in the spectral range from 1030 nm to 1099 nm, and the vector nature of generated optical fields are observed. The long-period fiber grating has also been used to transform the amplified spontaneous emission of an ytterbium-doped fiber amplifier into a broadband optical doughnut beam.