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. 2016 Apr 29;6:24995. doi: 10.1038/srep24995

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Copyright © 2016, Macmillan Publishers Limited

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(a) EDF, erbium-doped fibre (Liekki ER 80-8/125); WDM, wavelength division multiplexer; ISO, polarization independent optical isolator; PC, polarization controller; DCF, dispersion compensation fibre; OC, optical coupler; OSA, optical spectrum analyzer; PD, photo-detector; EDFA, erbium-doped fibre amplifier; TF, tunable filter; PSA, polarization state analyzer. The inset is the cross section of the PCF; more details are given in the Supplementary. (b) Nonlinear transmission of the SA as a function of average power. (c) Autocorrelation trace: the inset is the coherent peak in a larger scale. (d) 100 single-shot spectra measured by DFT (colored lines), and the black line is the averaged spectrum measured with an OSA. (e) 6 consecutive single-shot spectra showing enhanced spectral fluctuations in PML.