材料科学
光纤激光器
光学
超短脉冲
激光器
光电子学
多模光纤
光纤布拉格光栅
皮秒
光子晶体光纤
模式锁定
光纤传感器
宽带
光纤
波长
物理
作者
Juan Wang,Siyu Ge,Hongfei Ren,Tao Huang,Peilong Yang,Peipeng Xu,Shengchuang Bai,Shixun Dai,Jianke Du,Qiuhua Nie
出处
期刊:Optics Letters
[The Optical Society]
日期:2021-12-17
卷期号:47 (1): 34-34
被引量:8
摘要
We demonstrate a thulium-doped mode-locked fiber laser with ultra-broadband wavelength tunability for micro-strain sensing based on the multimode interference (MMI) effect in single-mode-multimode-single-mode (SMS) fiber configuration. The homemade SMS device with high performance is fusion spliced in the laser cavity, and the developed dispersion precisely managed the all-fiber structured mode-locked picosecond laser with a record-breaking wavelength tuning range from 1976 to 1916 nm while exerting axial strain on this SMS device. We experimentally explored the regularity between the strain and the central-wavelength shift of the mode-locked pulse, and for the first time to the best of the authors' knowledge, achieved the precise in-line axial strain measurement from 0 to 5385 µɛ by using the tunable ultrafast-laser-based sensor, and sensitivity is up to -11.5 pm/µɛ. With high compactness and durability, this sensor has advantages in real-time dynamic measurement over other passive devices, thus will undoubtedly find various application scenarios.
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