Abstract
An apparatus and method are provided for manipulating light beams propagated through PLCs in free space. Light beams propagated in through an input/output waveguide of a PLC are propagated through a waveguide array to generate a phased array output at an edge facet of the PLC. The phased array output at the edge facet is spatially Fourier transformed by a lens in free space, generating a spectrally resolved image at the back focal plane of the lens. The spectrally resolved image is reflected, at least in part, by a reflector device and coupled into a desired waveguide array of a PLC to produce a desired output.
| Original language | American English |
|---|---|
| Patent number | US2005185878 |
| IPC | G02B 6/ 35 A I |
| Priority date | 31/08/04 |
| State | Published - 25 Aug 2005 |