  Multiple controllable spiking patterns are obtained in a 1310 nm Vertical
Cavity Surface Emitting Laser (VCSEL) in response to induced perturbations and
for two different cases of polarized optical injection, namely parallel and
orthogonal. Achievement of reproducible spiking responses in VCSELs operating
at the telecom wavelengths offers great promise for future uses of these
devices in ultrafast neuromorphic photonic systems for non-traditional
computing applications.
