Variable gap device and method of manufacture

Details Variable gap device and method of manufacture Variable gap device and method of manufacture

H - Electricity

01

G

334/1

H01G 5/16 (2006.01) G01L 9/00 (2006.01) G02B 6/26 (2006.01) G02B 26/02 (2006.01)

Patent

CA 1260085

- 20 - VARIABLE GAP DEVICE AND METHOD OF MANUFACTURE Abstract A variable gap device which comprises a suitable material with a cavity formed therein mounted over a body. Elements are formed on the surface of the body and on the top surface of the cavity. In one embodiment, the elements are electrodes of a variable capacitance device, and in another embodiment the elements are partial or total reflectors of incident light from an optical fiber. The surface of the cavity opposite the body is preferably flat and of the order of microns from the body. The device is fabricated by forming a removable layer over a temporary substrate. An appropriate element pattern is formed over the removable layer and the layer is etched in a configuration which will define the cavity. The deformable material is encapsulated over this structure and then removed from the substrate with the element remaining in the cavity. Any removable material remaining in the cavity can then be etched away.

499087

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