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Acousto-optical waveguide device with compensation of polarization mode dispersion

  • US 5,850,492 A
  • Filed: 11/06/1996
  • Issued: 12/15/1998
  • Est. Priority Date: 05/03/1996
  • Status: Expired due to Fees
First Claim
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1. An acousto-optical waveguide device with compensation of polarization mode dispersion, comprising:

  • a) a first and a second optical path in an optical waveguide, obtained in a first substrate of birefringent material, each of the first and second optical paths capable of being traveled by a first and by a second polarization component of an optical signal, the first polarization component being orthogonal to the second polarization component;

    b) means capable of generating a surface acoustical wave, associated with at least one waveguide branch of said optical paths; and

    c) at least one compensation optical path optically connected to said optical paths, said compensation optical path having a prefixed polarization mode dispersion so that the passage time of said first polarization component in said first optical path and in said compensation optical path differs by less than a prefixed amount from the passage time of said second polarization component in said second optical path and in said compensation optical path at least in a non-active condition of said device.

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