Abstract
An all solid quasi-single material microstructure fiber (AS-QSM-MSF) with flattened dispersion and single mode transmission is presented in this paper. Besides microstructured cladding, six-core configuration is also employed to incorporate mode coupling mechanism into light transmission control in our proposed fiber. By doing this, flattened dispersion in the range of − 1.03–0.75 ps/(nm km) can be achieved from 1.52 to 2.01 μm, while refractive index difference Δn between matrix and doped inclusions is less than 0.016. Numerical results also show that the fundamental supermode has a flat top power density distribution with effective mode area 48.4 μm2 at 1.55 μm. Compared with the fibers of Gaussian power distribution, our fiber has a more uniform power distribution, which means that our fiber is less susceptible to nonlinear effect under same input power and effective mode area. In addition, simulation results show that the proposed AS-QSM-MSF has a wide single mode regime with cutoff wavelength at 1.197 μm. And the confinement loss and bending loss of the fiber at 45 mm bending radius are as low as 2.6 × 10−7 dB/km and 9.7 × 10−2 dB/km at 1.55 μm, respectively.
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Acknowledgements
We sincerely thank our anonymous reviewers for their thoughtful suggestions. This work is supported by the Open Subject of Jiangsu Key Laboratory of Meteorological Observation and Information Processing (KDXS1107) and National Natural Science Foundation of China (61735011) and Natural Science Foundation of Hebei Province (F2016203389).
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Wang, W., Qiu, S., Lin, T. et al. All solid quasi-single material supermode microstructure fiber with flattened dispersion and single mode transmission. Opt Quant Electron 50, 428 (2018). https://doi.org/10.1007/s11082-018-1679-6
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DOI: https://doi.org/10.1007/s11082-018-1679-6