Patent ID: RE39331

Claim:
An optical add-drop apparatus, comprising: a) multiple fiber collimators, providing an input port for a multi-wavelength optical signal and a plurality of output ports including a pass-through port and one or more drop ports; b) a wavelength-separator, for separating said multi-wavelength optical signal from said input port into multiple spectral channels; c) a beam-focuser, for focusing said spectral channels into corresponding spectral spots; d) a spatial array of channel micromirrors positioned such that each channel micromirror receives a unique one of said spectral channels, said channel micromirrors being individually and continuously controllable to reflect said spectral channels into selected ones of said output ports, whereby a subset of said spectral channels is directed into said pass-through port to provide pass-through spectral channels; and e) an optical combiner, for combining said pass-through spectral channels with one or more add spectral channels.