An optical transducer 100, 200 and method for the simultaneous measurement
of downhole pressure and temperature in a single- or multi-point
configuration including a body 10a/10b with an elastic membrane 50 onto
which at least one Bragg grating 60a/60b is attached, and at least an
additional Bragg grating 60b/60a contained on the same optical fiber 30.
The elastic membrane 50 conveys strain proportional to the pressure and
temperature conditions to which is submitted said transducer to at least
one Bragg grating 60a/60b, the portion of light not reflected by the
Bragg gratings 60a, 60b continues along the remaining of the optical
fiber 30.