Patent ID: 8174703
Filing Date: 2012-05-08
Classification: G01H,G01L,G01N

Abstract:
1. A method for fabricating a sensor, the method comprising: providing an elongated open channel in a top surface of a substrate, the open channel providing a first surface and a direction of elongation; wherein providing an elongated open channel in the surface of the substrate comprises providing an elongated v-groove in the surface of the substrate; wherein the first surface comprises a side surface of the v-groove; removing at least some material from at least a portion of the first surface of the open channel to provide a second surface in the open channel displaced from the first surface and parallel to the first surface; positioning a diaphragm on the second surface, the diaphragm having a top surface and a bottom surface, the diaphragm being adapted to deflect in response to a stimulus; removing at least some material from the substrate beneath the diaphragm; and positioning an elongated wave-guide having a beveled end in the elongated open channel wherein an outer surface of the wave-guide contacts the first surface and wherein the beveled end is positioned over the diaphragm to define an interferometric cavity between the diaphragm and the outer surface of the wave-guide.