Abstract: An optical shape sensing method is provided.

Abstract: An interferometric fluid sensing system is provided.

Abstract: A fibre optic sensing device is provided. The fibre optic sensing device includes a plurality of optical fibre portions, wherein each optical fibre portion is arranged to receive laser light from a common laser and reflect the laser light to a common detector. Each optical fibre portion includes a first reflector spaced from a distal end of the optical fibre portion and a second reflector at the distal end. Each optical fibre portion also includes a sensor provided at the distal end of the optical fibre portion. The sensor includes a third reflector the position of which varies depending on a value of a property being sensed. A distance between the first and second reflectors is different for each of the optical fibre portions.

Abstract: An optical shape sensing method is provided.

Abstract: A fibre optic sensing device is provided. The fibre optic sensing device comprises a plurality of optical fibre portions, wherein each optical fibre portion is arranged to receive laser light from a common laser and reflect the laser light to a common detector, wherein each optical fibre portion comprises a first reflector spaced from a distal end of the optical fibre portion and a second reflector at the distal end, wherein each optical fibre portion comprises a sensor provided at the respective distal end of the optical fibre portion, the sensor comprising a third reflector the position of which varies depending on a value of a property being sensed, wherein a distance between the first and second reflectors is different for each of the optical fibre portions.

Abstract: A system for preventing spillage from containers during the filling thereof includes an electrical circuit extending between one or more filling ports of the container and being connected with one or more liquid level sensitive switches within the container. A liquid dispensing apparatus for dispensing liquid into the container is coupled to the circuit so as to be enabled to dispense liquid into the container when the circuit is closed and to be disabled from dispensing liquid into the container when the circuit is opened. The circuit includes electrically isolated leads at each of the one or more filling ports that can be connected with each other so as to complete the circuit at that port when either the filling port is properly capped or the liquid dispensing apparatus is properly coupled to the port.