- 标题
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Fiber-Optic Magnetic Field Sensing Based on Microfiber Knot Resonator with Magnetic Fluid Cladding
摘要： A kind of all-fiber magnetic field sensing structure is proposed and demonstrated here. The sensing element includes a microfiber knot resonator (MKR) cladded with magnetic fluid (MF). The low-index MgF2 slab is adopted as the substrate. The sensitivity increases with the decrease of the MKR ring diameter. The achieved maximum magnetic field sensitivity is 277 pm/mT. The results of this work have the potential to promote the development of magnetically controllable optical devices and the design of ultra-compact cost-effective magnetic field sensors.
关键词： quality factor,finesse,magnetic fluid,microfiber knot resonator
更新于2025-11-28 14:24:03
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - A widely tunable single longitudinal mode erbium-doped fiber laser based on a microfiber knot resonator
摘要： A widely tunable single longitudinal mode erbium-doped fiber laser based on a microfiber knot resonator is proposed. The laser is tuned from 1545 ~ 1565 nm with a high side-mode suppression ratio of 55 dB.
关键词： Fiber laser,Microfiber knot resonator,Single longitudinal mode
更新于2025-09-16 10:30:52
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Stable multiwavelength Tm‐doped fiber laser with a microfiber knot resonator
摘要： We presented a compact and enduring multiwavelength Tm-doped fiber laser at 2 μm employing a microfiber knot resonator (MKR). The MKR, made by the flame-brushing technique, has a fiber diameter of 10 μm and a ring diameter of 150 μm. The MKR plays a role as both the comb filter and the power equalization device, which is critical for the stable multiwavelength Tm-doped fiber laser. By properly adjusting the pump power, three wavelength lasing channels (1956.2, 1964.4, and 1971.8 nm) were observed stable and their average power density was around ?8.76 dBm with 1 W pump power. In addition, the channel spacing is 5.8 nm with the 3-dB bandwidth of the channel smaller than 0.5 nm. The experiments demonstrated that the MKR can be utilized as a comb filter with the suitable transmission spectrum to reach a steady multiwavelength Tm-doped fiber laser.
关键词： fiber lasers,comb filters,multiwavelength,microfiber knot resonator
更新于2025-09-11 14:15:04