Fig. 4: Characterization of optical losses in functionalized HC-MOFs by the cut-back technique.
From: Multispectral sensing of biological liquids with hollow-core microstructured optical fibres
a Unmodified MOF. b, c Fibres coated with 14 and 40 PE bilayers in the salt-free solution. Shadow areas show the error range. Loss peaks fit Eq. (2). d The minimal optical loss in the transmission windows as a function of the bilayer quantity
