Patch type optical fiber sensor
First Claim
1. A patch type optical fiber sensor comprising at least one optical fiber having its part written with a fiber Bragg grating, and a film-like member having one surface on which said optical fiber is fixed at that part and the other surface attached to an object to be detected strain generated in said detection object is detected by Bragg wavelength shift of the fiber Bragg grating through said film-like member.
1 Assignment
0 Petitions
Accused Products
Abstract
In a patch type optical fiber sensor, an optical fiber (2) has at its part a fiber Bragg grating (3) and that part is fixed to a film (4) serving as a base to form a film-like detecting element. Opposite ends of that part are connected to optical cord (1) to protect the film-like detecting element. The detecting element is bonded to an object (9) to be detected by bonding agent or by welding.
-
Citations
13 Claims
- 1. A patch type optical fiber sensor comprising at least one optical fiber having its part written with a fiber Bragg grating, and a film-like member having one surface on which said optical fiber is fixed at that part and the other surface attached to an object to be detected strain generated in said detection object is detected by Bragg wavelength shift of the fiber Bragg grating through said film-like member.
-
11. A patch type optical fiber sensor comprising at least one optical fiber written with at least two fiber Bragg gratings at its different parts, and a film-like member having one surface on which said optical fiber is fixed at the different parts such that said direction are orthogonal to each other and the other surface fixed to an object to be detected, so that strain generated in said detection object is detected by said fiber Bragg gratings in at least two axes directions through said film-like member.
-
12. A patch type optical fiber sensor comprising at least two optical fiber s each having its part written with a fiber Bragg grating, and a film-like member having one surface on which said optical fiber s are each fixed at its parts so as to be orthogonal to each other and the other surface fixed to an object to be detected, so that strain generated in said detection object is detected by said fiber Bragg gratings in at least two axes directions through said film-like member.
-
13. A patch type optical fiber sensor comprising a plurality of optical fiber sensor units connected in series by a single optical fiber cord through optical connection points, each of said units including at least one optical fiber having its part written with a fiber Bragg grating and a film-like member having one surface on which said optical fiber is attached at that part and the other surface attached to an object to be detected, and a Measurement system of Bragg wavelength for fiber Bragg grating connected to one end of said single optical cord.
Specification