期刊
NANOMATERIALS
卷 9, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/nano9060868
关键词
hollow core fibers; perovskite nanocrystals; signal regeneration; amplification; nonlinear optical properties
类别
资金
- Spanish MINECO [BES-2015-074014, TEC2017-86102-C2-1]
- European Union's Horizon 2020 research and innovation program [820423]
- Generalitat Valenciana [Prometeo/2018/098]
- Academy of Finland
We report a hollow-core negative-curvature fiber (HC-NCF) optical signal amplifier fabricated by the filling of the air microchannels of the fiber with all-inorganic CsPbBr3 perovskite nanocrystals (PNCs). The optimum fabrication conditions were found to enhance the optical gain, up to +3 dB in the best device. Experimental results were approximately reproduced by a gain assisted mechanism based on the nonlinear optical properties of the PNCs, indicating that signal regeneration can be achieved under low pump powers, much below the threshold of stimulated emission. The results can pave the road for new functionalities of the HC-NCF with PNCs, such as optical amplification, nonlinear frequency conversion and gas sensors.
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