期刊
OPTICS LETTERS
卷 44, 期 2, 页码 295-298出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.44.000295
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资金
- Ministry of Education and Science of the Russian Federation (Minobrnauka) [Y26.31.0017]
- Russian Foundation for Basic Research (RFBR) (Russia-Italy) [18-52-7822]
- European Union's Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie grant [691051]
Narrowband Raman lasing in a polarization-maintaining two-core fiber (TCF) is demonstrated. Femtosecond point-by-point inscription of fiber Bragg gratings (FBGs) in individual cores produces a half-open cavity with random distributed feedback. The laser linewidth in the cavity with a single FBG inscribed in one core of the TCF reduced by similar to 2 times with respect to the cavity with a fiber loop mirror. It is shown that the inscription of two FBGs in different cores leads to the formation of a Michelson-type interferometer, leading to the modulation of generation spectra near threshold. This technique offers new possibilities for spectral filtering or multi-wavelength generation. (C) 2019 Optical Society of America
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