Patent ID: 8115937

Claim:
A system for measuring environmental parameters comprising: an optical fiber; a first reflective surface positioned proximate to a first end of the optical fiber; a space between the first end of the optical fiber and the first reflective surface; a second reflective surface spaced apart from the first reflective surface; a solid substrate having a thermally sensitive refractive index positioned between the first reflective surface and the second reflective surface to form a first temperature sensitive Fabry-Perot gap between the first reflective surface and the second reflective surface; a diaphragm; a third reflective surface connected to a surface of the diaphragm to form a second pressure sensitive Fabry-Perot gap between the second reflective surface and third reflective surface; and a first light source providing light to the optical fiber, wherein the optical fiber delivers light from the first light source to the first Fabry-Perot gap and the second Fabry-Perot gap and the optical fiber receives reflected light from the first Fabry-Perot gap and the second Fabry-Perot gap.