  In this paper, we report on the integration of a Correlation-OTDR into a
portable unit (30 cm x 30 cm), based on a multi-processor system on chip
(MPSoC) and a small formfactor pluggable (SFP) 2.5G transceiver. Going beyond
telecommunication applications, this system is demonstrated for temperature
measurements, based on the change of propagation delay with temperature in a
short section of optical fiber. The temperature measurement accuracy is
investigated as a function of the fiber length from 4 to 25 meters.
