Optical Waveguides with Compound Multiperiodic Grating Nanostructures for Refractive Index Sensing

Figure 2

(a) Schematic of fabricated samples. (b) Photograph of fabricated sample. (c) Photograph (stitched) of grating fields observed with experimental setup with crossed polarization filters (camera at output instead of spectrometer). (d) Schematic of spectrometer setup for optical characterization of nanostructured waveguides.

(a)

(b)

(c)

(d)