Two-mode remote fiber optic sensor
First Claim
Patent Images
1. A multiple parameter remote fiber optic sensing device comprising:
- (a) a first length of optical fiber, which is polarization preserving and single mode, having a first and a second end;
(b) a light source proximate to the first end of said first length of optical fiber and aligned with said first length of optical fiber such that light is injected into said first length of optical fiber along both polarization axes;
(c) a second gauged length of optical fiber, which is polarization preserving and two mode, having a first and a second end, the first end of said second length of optical fiber connected to the second end of said first length of optical fiber;
(d) a third length of optical fiber, which is polarization preserving and single mode, having a first and a second end, the first end of said third length of optical fiber connected to the second end of said second length of optical fiber such that the polarization axes of the two fibers are aligned; and
(e) means for detecting light exiting said second end of third length of fiber.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for remote sensing utilizing fiber optic techniques is presented. This device makes use of multi-mode optic fibers in conjunction with light polarized in multiple directions. The device presents a platform which is insensitive to phenomena outside of the remote sensing region while capable of detecting and analyzing multiple phenomena within the sensing region. The device is also capable of inspecting multiple remote sensing regions simultaneously.
20 Citations
8 Claims
-
1. A multiple parameter remote fiber optic sensing device comprising:
-
(a) a first length of optical fiber, which is polarization preserving and single mode, having a first and a second end; (b) a light source proximate to the first end of said first length of optical fiber and aligned with said first length of optical fiber such that light is injected into said first length of optical fiber along both polarization axes; (c) a second gauged length of optical fiber, which is polarization preserving and two mode, having a first and a second end, the first end of said second length of optical fiber connected to the second end of said first length of optical fiber; (d) a third length of optical fiber, which is polarization preserving and single mode, having a first and a second end, the first end of said third length of optical fiber connected to the second end of said second length of optical fiber such that the polarization axes of the two fibers are aligned; and (e) means for detecting light exiting said second end of third length of fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification