Planar optical waveguide dense wavelength division multiplexer
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United States of America Patent
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Mar 2, 2004
Grant Date -
Dec 12, 2002
app pub date -
Aug 30, 2001
filing date -
Jun 7, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This specification discloses a planar optical waveguide DWDM (Dense Wavelength Division Multiplexer), which is an integrated DWDM made by using the planar optical waveguide manufacturing technology. A diffractive grating is used in a planar optical path to direct beams of different wavelengths in a beam into different directions. An arrayed waveguide installed at the output end of the planar optical path couples the beams of different wavelengths to an optical fiber connected at the output end, separating the waves. On the other hand, a preferred embodiment of the invention has an arrayed lens between the diffractive grating and the arrayed waveguide. The arrayed lens can correct the deviated diffractive beams due to thermal deformation of the diffractive grating and conduct them into the arrayed waveguide.
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