Method of making a distributed optical fiber sensor having enhanced Rayleigh scattering and enhanced temperature stability, and monitoring systems employing same
First Claim
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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Accused Products
Abstract
A method of making an optical fiber sensor device for distributed sensing includes generating a laser beam comprising a plurality of ultrafast pulses, and focusing the laser beam into a core of an optical fiber to form a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to a longitudinal axis of optical fiber. Also, an optical fiber sensor device for distributed sensing includes an optical fiber having a longitudinal axis, a core, and a nanograting structure within the core, wherein the nanograting structure includes a plurality of spaced nanograting elements each extending substantially parallel to the longitudinal axis of the optical fiber. Also, a distributed sensing method and system and an energy production system that employs such an optical fiber sensor device.
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Citations
22 Claims
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
Specification