Patent ID: 11966076
Assignee: NATIONAL RESEARCH COUNCIL OF CANADA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A method of producing an optical fiber transducer usable in environments of extreme operating temperature, components of said transducer including a stationary support, a movable body intended for back and forth displacement relative to the stationary support in a predetermined direction, and an optical fiber intended for connection to said stationary support and said movable body in a position spanning axially therebetween in said predetermined direction, and having a Fiber Bragg Grating in an intermediate region of said fiber, said method comprising configuring the transducer to accommodate varying coefficients of thermal expansion among said components by:
providing one or more tubular members each having a thermal expansion coefficient that is lesser than that of said stationary support and said movable body, and greater than that of the optical fiber;
at first and second coupling regions that reside oppositely of one another across the intermediate region of the fiber that contains the Fiber Bragg Grating, bonding said optical fiber to an interior of said one or more tubular members; and
bonding an exterior of said one or more tubular members to said stationary support and said movable body.