Planar waveguide structure with polarization compensation
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United States of America Patent
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Mar 28, 2006
Grant Date -
Nov 25, 2004
app pub date -
May 24, 2004
filing date -
May 23, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A design for a polarization independent ridge waveguide structure is shown. The inventive waveguide structure features discontinuous trenches formed on either side of the waveguide in which the waveguide has a first polarization characteristic absent the trenches and a second polarization characteristic when the trenches are present. The length of the trenches and the distance between the trenches are chosen to provide a desired amount of attenuation to each of the TE and TM modes. Additionally, this method is used to cause a predetermined polarization in order to compensate for the polarization of another optical component.
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