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Integrated etched multilayer grating based wavelength demultiplexer

  • US 20070086703A1
  • Filed: 10/19/2006
  • Published: 04/19/2007
  • Est. Priority Date: 10/19/2005
  • Status: Active Grant
First Claim
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1. An optical device for reflectively diffracting optical signals, comprising:

  • an input port for receiving an optical signal, the optical signal comprising light having wavelengths corresponding to a predetermined set of wavelength channels;

    an optical medium, the optical medium comprising at least one of a plurality of waveguide layers and being characterised by a thickness, for guiding the optical signal within the optical device;

    a grating structure disposed at a predetermined location within the optical medium, the grating structure comprising at least one of a plurality of diffractive elements and a plurality of multilayer reflector elements;

    wherein, the grating structure reflectively diffracts light in dependence upon a wavelength such that light having a wavelength corresponding to a first wavelength channel is directed to a first target location of the optical medium.

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