×

Fiber optic sensing device and method of making and operating the same

  • US 7,421,162 B2
  • Filed: 03/22/2005
  • Issued: 09/02/2008
  • Est. Priority Date: 03/22/2005
  • Status: Expired due to Fees
First Claim
Patent Images

1. A fiber optic sensor cable, composing:

  • a core having a grating with a quasiperiodic modulation of index of refraction, the grating composing;

    a plurality of grating element blocks having a refractive index na and a fiber length d(na) or a refractive index nb and a fiber length d(nb), arranged in a quasiperiodic sequence, wherein the quasiperiodic sequence is defined by the equation Sj={Sj-1,Sj-2} for j values greater than two, wherein S1=na and S2=na nb anda cladding disposed circumferentially about the core.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×