  In the domain of mechanophotonics, achieving real-time applicability of
organic crystals in visible light communication (VLC) technologies necessitates
affordable light-emitting diodes (LEDs) as sources of light to run photonic
devices through sustainable methods. Here in, we demonstrate an efficient
strategy to excite
(Z)-3-(3',5'-bis(trifluoromethyl)-[1,1'-biphenyl]-4-yl)-2-(4-methoxyphenyl)
acrylonitrile (CF3OMe), 9,10-bis(phenylethynyl)anthracene (BPEA) and
2,2'-((1E,1'E)-hydrazine-1,2-diylidenebis(methaneylylidene))diphenol (SAA)
flexible crystal waveguides utilizing UV LED source and transduce respective
blue, orange and yellow fluorescence signals. The capability of the focused LED
lies in its ability to (i) energize mechanically bent crystals at an angle of
180{\deg}, (ii) evanescently excite the FL of a SAA waveguide using the FL of
CF3OMe waveguide through energy transfer, and (iii) excite and split different
signals in a 2X2 hybrid directional coupler based on SSA-BPEA crystals. These
demonstrations underscore the practicality of the proposed technique for
sustainable applications in photonic systems related to VLC.
