  The latest achievements in the fabrication of black phosphorus thin layers,
towards the technological breakthrough of a phosphorene atomically thin layer,
are paving the way for a their employment in electronics, optics, and
optoelectronics. In this work, we have simulated the optical properties of
one-dimensional photonic structures, i.e. photonic crystals and microcavities,
in which few-layer black phosphorus is one of the components. The insertion of
the 5 nm black phosphorous layers leads to a photonic band gap in the photonic
crystals and a cavity mode in the microcavity interesting for light
manipulation and emission enhancement.
