Microstructures in Polymer Fibres for Optical Fibres, THz Waveguides, and Fibre-Based Metamaterials
Figure 4
(a) Transmission spectrum of an LPG in a single-mode mPOF similar to Figure 3(a). Inset shows strain response up to strains exceeding 20%. (b) Reflection spectrum of an FBG in a multimode mPOF with a 50 μm core diameter, with fibre cross-section in inset. (c) Comparison of strain response for FBG inscribed in mPOF and step-index POF. (d) Humidity response of a FBG inscribed in a Topas mPOF, with fibre cross-section in inset. Adapted from (a) [93, 96], (b) [103], (c) [109], and (d) [107].
