Fiber optic interferometric thermometer with serially positioned fiber optic sensors

摘要

A single fiber optical fiber temperature measuring device is provided for in vivo determination of temperature at a plurality of spaced points. The device includes a fiber optical temperature sensing device having at least first and second optical fiber sensors which optical fiber sensors are positioned at the measurement sites and at least two fiber optical sensors are connected to a divided interferometer associated with an opto- electronic demodulator which has an output signal representing the temperature at the sensed sites. The device also has utility in industrial or chemical temperature sensing applications.