The Mesophotonics' technology in its current form can be used to
create integrated optics products for wavelengths throughout the
visible spectrum and into the infra-red. Mesophotonics' initial
products will target applications that leverage the core benefits
of photonic crystals for making the basic building blocks of light
filtering and distribution.
These building blocks are then combined to produce customised integrated
optical chips for specific customer requirements.
Photonic band gap materials offer key advantages in filtration.
High contrast narrow bandwidth filters can be achieved over a wide
range of wavelengths. Filters with depth of >30dB have been realised
with only a few rows of holes taking up an area of only 10 µm.
Such filters can easily be cascaded to form greater filter depths
multiple wavelength filters and polarisation sensitive filters.
Photonic crystals are ideal elements for distributing light around
an optical chip. In conventional integrated optics light is directed
around the wafer using waveguides which have bend radii of several
mm and restrict how far chips can be miniaturised. In photonic crystals
light can be bent by 90 degrees or split and divided into multiple
waveguides in only a few µm. The illustration on
the left shows a T type splitter where light is split into two waveguides
at 90 degrees to the incoming guide in a device measuring only 10x20