Fig. 4: Flexible fibre structure based on Li2ZnSiO4:Mn2+.
From: Mn2+-activated dual-wavelength emitting materials toward wearable optical fibre temperature sensor
a Structure of the designed flexible optical fibre. b, c Photographs of the OE fibre core with PDMS cladding and the light guiding in the optical fibre. Green laser was launched into the fibre through a coupled silica multimode optical fibre. d Photograph of the cross section of the OE fibre core with PDMS cladding. e Propagation loss of the OE fibre core with and without PDMS cladding measured by a cutback method in air condition. f, g Photographs of the as-fabricated fibre sensor with 365 nm LED off or on. h Cross section of the fabricated optical fibre sensor. i Photograph of the as-fabricated flexible optical fibre sensor integrated with Li2Zn0.85SiO4:0.15Mn2+ phosphor under natural-light irradiation.
