Fig. 4: Spectra of group velocity dispersion (GVD) and absorption. | Nature Communications

Fig. 4: Spectra of group velocity dispersion (GVD) and absorption.

From: Thermo-optic epsilon-near-zero effects

Fig. 4

a Full GVD spectrum of the O-band, C-band, and 2-μm-band samples. b–d The variations of GVD with temperature for these three sets of samples near the epsilon-near-zero (ENZ) frequency, respectively. e Full absorption spectrum of the three sets of samples. f–h The corresponding absorption variations with temperature near the ENZ frequency. In a and e, the colored vertical lines indicate the exact ENZ frequencies of the corresponding curves.

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