Method of fabricating a fibre-optic pressure and temperature sensor
AssigneeUCL Business PLC
InventorsAdrien Desjardins, Malcolm Finlay, Charles Alexander Mosse, Ioannis Papakonstantinou, Radhika Poduval
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Abstract
A method for making a housing that defines a cavity for a pressure sensor, the method comprising: providing a bulk of material that will form the housing; focusing a radiation beam on internal portions of the bulk of material so as to modify the internal portions, thereby defining the housing's shape, wherein upstream of the focus of the radiation beam other portions of the bulk material remain unmodified; and discarding either the modified portions or the unmodified portions of the bulk material so as to form the cavity.
Claims22
A method for making a housing that defines a cavity for a fibre optic pressure sensor, the method comprising:
- providing a bulk of first material that will form the housing;
- focusing a radiation beam on internal portions of the bulk of first material so as to modify the internal portions, thereby defining a shape of the housing;
- forming a diaphragm by adding a second material different from the first material to the housing such that the housing supports the diaphragm adjacent to the cavity, and such that the diaphragm deflects with changes in pressure external to the sensor;
- and
- discarding either the modified portions or the unmodified portions of the bulk first material so as to form the cavity.
A housing that defines a cavity for a pressure sensor, the housing comprising:
- a fibre-receiving hole adjacent one end of the cavity;
- and
- a diaphragm surface at the opposite end of the cavity such that the diaphragm is adjacent to the cavity, wherein the diaphragm deflects with changes in pressure external to the sensor,
- wherein the cross-sectional area of the cavity increases from the end adjacent to the fibre-receiving hole towards the diaphragm surface,
- wherein a first material defines the cavity and the diaphragm is formed with a second material that is added to first material, the second material being different from the first material.
Dependencies are inferred from the claim text.