Development and Commissioning of High Temperature FBG Solid Pressure Sensors

Figure 1

Structural diagram of optical grating pressure sensor. (a) Outline of sensor. (b) Structural profile at AB position. (1) Fiber, (2) fixed column, (3) pressure diaphragm, (4) strain grating FBG1, (5) temperature compensation grating FBG2, (6) stainless steel cover.

(a)

(b)