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Fig. 9 | PhotoniX

Fig. 9

From: Optical waveguides based on one-dimensional organic crystals

Fig. 9

1D core/shell microstructures for optical waveguides. a Schematic of the waveguide sensor. b-c Time-dependent PL spectrum of the input light b and output light c on exposure to 6 ppm H2O2 vapor. d, f Bright-field and PL images obtained from both d DPEpe-HCl/DPEpe core/shell and f DPEpe/DPEpe-HCl core/shell microcrystal with different colors emission by exciting the wires at seven different positions. Scale bar: 10 μm. e, g Corresponding spatially resolved PL spectra in d and f with different separation distances. Insets: The ratios of the intensity Itip/Ibody against the distance. h Schematic diagram of optical logic gate based on the organic core-shell microwire. i-k Spatially resolved PL spectra of the four output channels obtained by exciting microwire at three different laser beam input positions: at the left end; at the center; at the right end. Insets: the corresponding FM images. a-c Reprinted with permission from ref. [31] Copyright 2012, Wiley-VCH. d-g Reprinted with permission from ref. [44] Copyright 2019, American Chemical Society. h-k Reprinted with permission from ref. [32] Copyright 2019, Nature Publishing Group

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