Numerical simulation of the heavily Ge-doped polarization-maintaining fiber with normal dispersion

The heavily germanium (Ge)-doped silica fiber assisted by two air holes in the cladding exhibits high nonlinearity and birefringence, low loss and normal group velocity dispersion (GVD) for two fundamental modes (FMs). When the 1 920 nm and 0.1 ps pump pulse with 100 kW peak power is coupled into th...

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Bibliographic Details
Published in:Optoelectronics letters 2022, Vol.18 (1), p.35-42
Main Authors: Li, Hongwei, Wang, Chuncan, An, Haitao
Format: Article
Language:English
Subjects:
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
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Summary:The heavily germanium (Ge)-doped silica fiber assisted by two air holes in the cladding exhibits high nonlinearity and birefringence, low loss and normal group velocity dispersion (GVD) for two fundamental modes (FMs). When the 1 920 nm and 0.1 ps pump pulse with 100 kW peak power is coupled into the 0.5-m-long fiber and polarized along one of two principle axes, the generated spectra can cover the wavelength range around 1 000–2 500 nm at −20 dB. Furthermore, the output pulse has an excellent coherence in the whole wavelength range.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-022-1031-z