Fig. 4: Experimental demonstration of the non-Gaussian mode with a uniform electric field intensity near the critical point. | Nature Communications

Fig. 4: Experimental demonstration of the non-Gaussian mode with a uniform electric field intensity near the critical point.

From: All-dielectric scale invariant waveguide

Fig. 4: Experimental demonstration of the non-Gaussian mode with a uniform electric field intensity near the critical point.The alt text for this image may have been generated using AI.

a FDTD simulation of electric field intensity profiles \({{|E|}}^{2}\) of the fundamental Transverse Electric (TE) mode profile of the strip SiN waveguide. b Measured mode profile of SiN strip waveguide showing a conventional Gaussian-like profile. c FDTD simulation of electric field intensity profiles \({{|E|}}^{2}\) of the fundamental Transverse Electric (TE) mode profile of the scale-invariant waveguide. d Measured mode profile of the scale-invariant waveguide showing an almost uniform intensity distribution in the middle region.

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