Patent ID: 6462329
Filing Date: 2002-10-08
Classification: G01K

Abstract:
A fiber Bragg grating reference module for providing a precise temperature reference for a temperature probe, including a thermistor, for measuring a temperature, and being located in close proximity thereto, comprising:an optical fiber having a fiber Bragg grating therein and being made from a material having a coefficient of thermal expansion; a glass element for anchoring two ends of the optical fiber containing the fiber Bragg grating, and being made from a substantially similar material having a substantially similar coefficient of thermal expansion as the coefficient of thermal expansion of the material of the fiber Bragg grating to ensure that the glass element does not substantially induce strain on the fiber Bragg grating as the temperature changes; and a reference housing having a cavity and having means for receiving and affixing one end of the fiber Bragg grating and for suspending the fiber Bragg grating in the cavity, leaving the other end of the fiber Bragg grating free to move as the temperature changes without inducing strain in the fiber Bragg grating.