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Method of making a distributed optical fiber sensor having enhanced Rayleigh scattering and enhanced temperature stability, and monitoring systems employing same

  • US 10,670,802 B2
  • Filed: 08/30/2018
  • Issued: 06/02/2020
  • Est. Priority Date: 08/31/2017
  • Status: Active Grant
First Claim
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1. An optical fiber sensor device structured for distributed sensing, comprising:

  • an optical fiber having a longitudinal axis, a core, and a nanograting structure within the core, wherein the nanograting structure includes a plurality of nanograting elements each extending in a first direction that is substantially parallel to the longitudinal axis of the optical fiber, wherein the nanograting elements are spaced in a periodic manner from one another and aligned and positioned immediately adjacent one another in a second direction that is substantially perpendicular to the first direction, and wherein there is no spacing between or within any of the nanograting elements in the first direction such that the core does not include any grating elements therein spaced from one another in the first direction.

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