Patent ID: 7643718

Claim:
A non-photonic band gap device, comprising: a waveguide layer structure which comprises a uniaxially patterned region formed with a two-dimension array of inclusions or pores defined by at least typical distances between neighboring inclusions in the array, said waveguide layer structure comprises a core layer interposed between top and bottom cladding layers, at least one of said core and cladding layers consists of a semiconductor material, said array of inclusions interacts with electromagnetic radiation having different modes propagating as guided within the waveguide layer structure based on refractive index differences in the pattern, wavelength of said radiation being substantially greater than said typical distances between neighboring inclusions in the array; and control arrangement operationally coupled to the uniaxially patterned region for controlling the propagation of the modes differentially, said control arrangement comprising a pumping device for pumping said at least one semiconductor layer, so as to render it as an amplifying medium for at least one of the modes of electromagnetic radiation with the wavelength being substantially greater than the typical distance between neighboring inclusions to propagate in said waveguide layer structure.