Athermal arrayed waveguide grating
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United States of America Patent
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May 15, 2007
Grant Date -
Jul 22, 2004
app pub date -
Jul 23, 2003
filing date -
Jan 21, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An athermal arrayed-waveguide grating is disclosed and includes an input waveguide for inputting two or more optical signals from one exterior side, a grating array for separating the optical signals into different wavelengths of light, a first slab, formed with two layers and having different refractive indices from each other, for connecting the input waveguide with the grating array, a second slab for causing the different light wavelengths separated at the grating array to be imaged on an egress surface thereof, and an output waveguide array for outputting each light wavelength imaged on the egress surface of the second slab to the other exterior side in the form of a separated channel.
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