Microstructuring of Optical Fibers Using a Femtosecond Laser

Abstract

Laser ablation with femtosecond lasers is highly promising for microfabrication of materials. Also, the high peak power of femtosecond lasers could induce a multiphoton absorption to ablate transparent materials. Similar results have also been were obtained in the case of optical fibers. In this paper, we present our experimental results of femtosecond laser microstructuring of optical fiber and its applications to microelectronic components and fiber optic devices. Finally, we directly produced micro holes with femtosecond laser pulses in a single step by moving an optical fiber in a preprogrammed structure. When water was introduced into a hole drilled from the bottom surface of the optical fiber, the effects of blocking and redeposition of ablated material were greatly reduced and the aspect ratio of the depth of the hole was increased. We have presented circular and rectangular-shaped holes in optical fiber.

Dual-wavelength mode-locked fiber laser based on tungsten disulfide saturable absorber

“…The total length of fiber in this ring cavity fiber laser is approximately 120 m, including 8 m C-band erbium-doped fiber (EDF, Nufern, M5-980-125) as gain medium with a dispersion parameter of ~ − 12.2 ps (km • nm) −1 and a peak absorption of 6.2 dB m −1 at 1530 nm as well as 110 m standard single mode fiber (SMF) with dispersion parameter of 18 ps (km • nm) −1 . The total net cavity dispersion is ~1.01 ps 2 . A 978 nm semiconductor laser with 500 mW maximum output power provides pump through a 980/1550 nm wavelength division multiplexer (WDM).…”

“…Due to their wide applications in optic communication, industry material processing, frequency comb and biomedical researches [1][2][3], ultrafast pulse fiber lasers based on different materials and configurations have been attracting an increasing amount of attention in a verity of research fields. Passively mode locking is a well-known method to generate ultrafast pulses [4], including multi-wavelength mode-locking pulses.…”

Liquid-Phase Exfoliation of Ta2NiS5 and Its Application in Near-Infrared Mode-Locked Fiber Lasers with Evanescent Field Interactions and Passively Q-Switched Bulk Laser

“…Near-infrared (NIR) pulse lasers have been most commonly applied in the fields of material processing, biomedical research, laser processing, and lidar due to their special wavelength, high peak power, and short pulse width [1][2][3][4]. Passively Q-switched (PQS) and mode-locked (ML) techniques are the main ways to generate pulse lasers, and the saturable absorber (SA) is the key element.…”

Nonlinear optical properties and laser modulation of gold non-covalently doped all-inorganic perovskite

“…The short-pulse lasers in near-infrared (NIR) have been extensively developed and used in various fields of material identification, laser radar, nondestructive examination, laser processing, optical devices, biomedical research, environmental monitoring and so on [1][2][3][4][5]. Passively Q-switched (PQS) techniques relying on saturable absorber to adjust resonator loss is a commonly used and effective method to generate ultrafast pulses in solid state lasers due to compact structure and cost-efficiency.…”