Read me file: Data for 'All-fiber passive alignment-free depolarizers capable of depolarizing narrow linewidth signals'
DOI: https://doi.org/10.5258/SOTON/D0648
University of Southampton – ORC – U. S Mutugala – usm1g14@soton.ac.uk
The .csv files contains experimental and simulation data for the paper : All-fiber passive alignment-free depolarizers capable of depolarizing narrow linewidth signals Journal of Lightwave Technology
Authors:Udara S. Mutugala, Ian P. Giles, Meng Ding, David J. Richardson, Radan Slavík
DOI:10.1109/JLT.2018.2870964
In particular, data for the figures:
Fig. 6. The range of output DOP variation that can be expected for fluctuations in the center frequency of the input signals f0 and/or induced time delays t1, t2. The DOP variation corresponding to a 45° input SOP is shown.
Fig. 7. Delay fiber requirement in Stage 1 (L1) of the proposed depolarizers to reduce the output DOP below 5% as a function of FWHM linewidth of the input signal (L2=2 L1).
Fig. 8. Variation of output DOP as a function of the coupler coupling ratio for different linear input SOPs. To obtain <5% output DOP for an arbitrary input SOP the balance in coupling ratio must be better than 47.5:52.5.
Fig. 9. Variation of output DOP as a function of differntial loss between fiber paths in Stage 1 for arbitrary input SOPs (shown as grey lines) for the coupler coupling ratio of 47.5:52.5. The performance for four selected linear input SOPs (0°, 30°, 45°, and 90°) have been labelled.
Fig. 10. Variation of output DOP as a function of differntial loss between fibers paths in Stage 2 for arbitrary input SOPs (shown as grey lines) for the coupler coupling ratio of 47.5:52.5. Performance for four selected linear input SOPs (0°, 30°, 45°, and 90°) have been labelled. The red-line also corressponds to the DOP variation for any input SOP when the coupling ratio is 50:50.
Fig. 11. Contour plot showing the DOP variation with coupler coupling ratio and differential loss between fiber paths in Stage 2.
Fig. 12. PDL as a function of differential loss between fiber paths in Stage 1. PDL is independent of the coupling ratio.
Fig. 13. PDL as a function of differential loss between fiber paths in Stage 2 for coupling ratios of 50:50 (blue: differential loss of 0.05 dB in Stage 1) and 47.5:52.5 (red: differential loss of 0 dB in Stage 1; green: differential loss of 0.05 dB in Stage 1).
Fig. 14. FWHM linewidth of the three lasers used for characterization of the depolarizers as a function of the bias current.
Fig. 17. DOP variation of the PM-depoalrizer with 20 m and 40 m PM delay fibers.
Fig. 18. DOP variation of the SMF-depoalrizer with 10 m and 20 m SMF delay fibers.
Fig. 19. DOP variation of the SMF-depoalrizer with 200 m and 400 m SMF delay fibers.
Date that the file was created: September 2018