2022/06/12 by Jiading Tian, Tian, Jiading, Zehui Wang +9
Engineering · Materials Science · #FOS: Physical sciences #Glass properties and applications #Optics (physics.optics) #Photonic Crystal and Fiber Optics #Solid State Laser Technologies
paper · pdf · doi:10.48550/arxiv.2206.05656
openalex publication_date 2022/06/12 · openalex created_date 2022/11/30 · openalex updated_date 2026/07/28
Fiber fuse effect can occur spontaneously and propagate along optical fibers to cause wide-spread damage; it threatens all applications involving optical fibers. This paper presents two results. First, it establishes that the initiation of fiber fuse (IFF) in silica fibers is caused by defect-induced absorption. Critical temperatures and critical optical powers for IFF are simulated for the first time using a 3D solid-state heat transfer model with heat source generated by defect-induced absorption. In this method, formation energies of the defects can be uniquely determined, which offers critical information on the chemical reasons for fiber fuse. Second, this paper offers a method to evaluate operating temperatures of fiber lasers. General analytical solutions of the operating temperatures along gain fibers are deduced. Results of 976-nm laser-diode-(LD)-pumped and 1018-nm tandem-pumped ytterbium-doped fiber (YDF) amplifiers using 10/130-μm YDFs are calculated. Potential limits caused by fiber fuse are discussed.