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Optical waveguide bragg grating system

  • US 20040136652A1
  • Filed: 02/11/2004
  • Published: 07/15/2004
  • Est. Priority Date: 02/13/2001
  • Status: Abandoned Application
First Claim
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1. An optical waveguide Bragg grating system comprising a length of optical waveguide having a plurality of Bragg grating locations spaced apart along its length, each grating location containing a plurality of Bragg gratings formed thereat, each of the gratings at a respective location having a characteristic response wavelength different from the other gratings at that location, each location being assigned a unique digital code representative of a unique set of response wavelengths of the gratings at that location, an optical source for providing an optical signal to the optical waveguide, the signal having a bandwidth which includes the response wavelength of each grating at each location, a correlator for correlating in wavelength space combined optical responses from all locations with. each code, whereby. the responses from each grating location may be uniquely determined.

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