We proposed and demonstrated two different methods to split electromagnetic waves in
three-dimensional photonic crystals. By measuring transmission spectra, it was shown that
the guided mode in a coupled-cavity waveguide can be splitted into the coupled-cavity or
planar waveguide channels without radiation losses. The flow of electromagnetic waves
through output waveguide ports can also be controlled by introducing extra defects into the
crystals. Our results may have an important role in the design of efficient power splitters in a …

We proposed and demonstrated two different methods to split electromagnetic waves in
three-dimensional photonic crystals. By measuring transmission spectra, it was shown that
the guided mode in a coupled-cavity waveguide can be splitted into the coupled-cavity or
planar waveguide channels without radiation losses. The flow of electromagnetic waves
through output waveguide ports can also be controlled by introducing extra defects into the
crystals. Our results may have an important role in the design of efficient power splitters in a …