A Vis-Spectrophotometer with a new Topology of Nanophotonic Diffraction Grating
This paper presents a new topology for photonic crystals to replace the monochromator, introducing them with a new
alignment (the so-called extended Trinitron) to guide the chromatic pattern producing a spatial distribution similar to that of
conventional diffraction gratings. The spectrophotometer uses a LED white light as light source instead of cameras
with halogen lamps and mirrors. The system was designed using actual data from the manufacturer of photonic crystals
and the total system response is compared against that one of a conventional spectrophotometer with a LED white light
or tungsten bulb as a light source. It is shown that the spectral responses are similar in photonic panels containing
more than twenty elements.