Patent ID: 11906334
Assignee: OPTASENSE HOLDINGS LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A fibre optic cable structure comprising:
an optical fibre; and
a bend inducer that is responsive to an environmental parameter to control bending of the optical fibre, wherein the bend inducer comprises:
a first component with a longitudinal dimension that varies with the environmental parameter; and
a second component with a longitudinal dimension that varies with the environmental parameter; wherein the amount of variation in the longitudinal dimension of the first component to a given change in the environmental parameter differs from the amount of variation in the longitudinal dimension of the second component to the given change in the environmental parameter, and wherein the first component and second component are configured such that a given change in the environmental parameter results in a positive change in the longitudinal dimension for one of the first or second components and a negative change in the longitudinal dimension for the other of the first or second components;

wherein the bend inducer is configured to adopt a first configuration at a first value of the environmental parameter that induces a first curvature of the optical fibre and to adopt a second configuration at a second, different, value of the environmental parameter that induces a second, different, curvature of the optical fibre such that a change in value of the environmental parameter imparts a bending force on the optical fibre.