Fig. 4 | Light: Science & Applications

Fig. 4

From: Nanostructured fibers as a versatile photonic platform: radiative cooling and waveguiding through transverse Anderson localization

Fig. 4The alternative text for this image may have been generated using AI.

Transverse Anderson localization in comet moth cocoon fibers. a Intensity distribution of a beam at λ = 600 nm under transverse localization exiting the end facet of a cocoon fiber measuring ~720 μm in length. The dashed curve shows the outer edge of the fiber. The black curve in the figure shows the logarithm of the averaged intensity profile of the beam. b Logarithm of averaged intensity profiles at the exit facet for fibers of different lengths with λ = 600 nm. c Logarithm of averaged intensity profiles at the exit facet for a fiber with length L = ~720 μm at different wavelengths. d–f Intensity distributions showing a highly localized hotspot in a fiber with length L = ~150 μm at three wavelengths. g Profiles of the hotspot at the three wavelengths. h Intensity distribution showing light being guided by a sericin slab region between two cocoon fibers. The black curve shows the profile of the guided mode at a location indicated by an arrow. i Optical image of a ring of 1-μm apertures used for image transport through a cocoon fiber with length L = ~400 μm. j Intensity distribution at the exit facet of the fiber showing the transport of the ring pattern

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