Wavelength division multiplexing/demultiplexing devices using homogeneous refractive index lenses
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United States of America Patent
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Jun 17, 2003
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N/A
app pub date -
Apr 30, 2002
filing date -
Dec 13, 1997
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Abstract
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 multiplexing device is the use of a homogeneous refractive index collimating/focusing lens for collimating the plurality of monochromatic optical beams traveling along a first direction to the diffraction grating, and for focusing the multiplexed, polychromatic optical beam traveling along a second direction from the diffraction grating, wherein the second direction being substantially opposite the first direction.
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