Fiber bragg grating temperature sensor
AssigneeThe University of Adelaide
InventorsTanya Monro, Stephen Warren-Smith
Life of this patent
Estimating the term…
Abstract
A temperature sensor and temperature sensing system for sensing changes in temperature up to a predetermined temperature is disclosed. The temperature sensor includes a microstructured optical fiber where the microstructured optical fiber includes a plurality of longitudinal channels extending along the microstructured optical fiber. The sensor also includes a fiber Bragg grating formed in the microstructured optical, fiber by generating a periodic modulation in the refractive index along a core region of the microstructured optical fiber. The fiber Bragg grating is operable to produce band reflection at a reflection wavelength that varies in accordance with changes in temperature at the core region of the optical fiber.
Claims22
A temperature sensor for sensing changes in temperature up to a predetermined temperature, comprising:
- a microstructured optical fiber, the microstructured optical fiber including a plurality of longitudinal channels extending along the microstructured optical fiber between a core region and an outer cladding portion of the microstructured optical fiber;
- and
- a fiber Bragg grating formed in the microstructured optical fiber by generating a periodic modulation in the refractive index along the core region of the microstructured optical fiber, wherein the periodic modulation in the refractive index along the core region comprises ablated defects, the ablated defects comprising a series of cavities where material has been physically removed from an outer surface portion along the core region of the microstructured optical fiber, wherein the fiber Bragg grating is operable to produce band reflection at a reflection wavelength that varies in accordance with changes in temperature at the core region of the optical fiber.
Dependencies are inferred from the claim text.