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Anti-waveguide routing structure

  • US 6,507,681 B1
  • Filed: 08/02/2000
  • Issued: 01/14/2003
  • Est. Priority Date: 08/02/2000
  • Status: Expired due to Term
First Claim
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1. A method for switching an optical switch from a first state to a second state, said optical switch including a structure which in said first state provides confinement against propagation of an optical mode in at least a first direction out of a confinement region,comprising the step of reducing the refractive index of at least a first part of said confinement region to a value which is below the index of refraction of a first region of said switch outside of and adjacent to said confinement region in said first direction, while maintaining confinement in a second direction different from said first direction.

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