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Compact optical-optical switches and wavelength converters by means of multimode interference mode converters

  • US 5,933,554 A
  • Filed: 08/27/1997
  • Issued: 08/03/1999
  • Est. Priority Date: 02/01/1995
  • Status: Expired due to Term
First Claim
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1. A cross-phase-modulated optical--optical switch comprisinga mode splitter (111) having one or several waveguide inputs for an optical input signal (B) and for splitting said input signal into two arms (5, 6) of a Mach-Zender interferometer;

  • a nonlinear optical material (114,

         118) in at least one of said arms;

    a phase shifter (115,

         119) in at least one of said arms;

    a first mode combiner (112) coupled to said arms for imaging the input signal (B) onto said arms of waveguides; and

    a second mode combiner (113,

         117) for coupling a control signal onto one of said arms, said second combiner comprising an multimode interferometer converter combiner.

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