An improved wavelength division multiplexing device is disclosed. The improved wavelength division multiplexing device has a diffraction grating for combining a plurality of monochromatic optical beams into a multiplexed, polychromatic optical beam. The improvement in the improved wavelength division...http://www.google.es/patents/US6404945?utm_source=gb-gplus-sharePatente US6404945 - Wavelength division multiplexing/demultiplexing devices using homogeneous refractive index lenses
Wavelength division multiplexing/demultiplexing devices using homogeneous ...
