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Optical waveguide type synaptic weight modulator with nematic liquid crystal cladding

  • US 5,388,169 A
  • Filed: 12/14/1993
  • Issued: 02/07/1995
  • Est. Priority Date: 04/26/1993
  • Status: Expired due to Fees
First Claim
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1. An optical waveguide type synaptic weight modulator for use with a control power supply, comprising:

  • a glass substrate;

    a multichannel waveguide provided on the glass substrate, the waveguide having an input portion with a plurality of channel waveguides, an output portion, and a branching portion which connects the input and output portions; and

    weighting means for weighting input signals which have different waveguide modes and which are introduced into the input portion of the waveguide so as to generate a weighted output signal at the output portion of the waveguide, the weighting means includingelectrodes provided on the glass substrate, the channel waveguides passing between the electrodes, the electrodes being connected to the control power supply,a nematic liquid crystal cladding layer provided over the channel waveguides and the electrodes, andan orientation film contacting the nematic liquid crystal cladding layer.

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