Fiber optic interferometric thermometer with serially positioned fiber optic sensors
First Claim
1. A single fiber optic temperature measuring device comprising at least a first optical fiber sensor on the single optic fiber, a second optical fiber sensor serially positioned in respect to the first optical fiber sensor on the single optic fiber, a fiber optical remote demodulation interferometer, radiant energy emitting means for directing radiant energy to each of the sensors through the single optic fiber then to the remote demodulation interferometer;
- and radiant energy detectign means connected to the remote demodulation interferometer.
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Accused Products
Abstract
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.
70 Citations
7 Claims
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1. A single fiber optic temperature measuring device comprising at least a first optical fiber sensor on the single optic fiber, a second optical fiber sensor serially positioned in respect to the first optical fiber sensor on the single optic fiber, a fiber optical remote demodulation interferometer, radiant energy emitting means for directing radiant energy to each of the sensors through the single optic fiber then to the remote demodulation interferometer;
- and radiant energy detectign means connected to the remote demodulation interferometer.
- View Dependent Claims (2, 3)
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4. Means for measuring temperature in the human body comprising a catheter, a single optical fiber, fiber optic temperature sensor housed in the catheter, said temperature sensor means comprising a first fiber optical temperature sensitive sensor, means mounting the first sensor in the catheter, a second fiber optical temperature sensitive sensor, means mounting the second sensor in the catheter, a fiber optical interferometer, means connecting each first and second optical fiber sensors to the interferometer, radiant energy emitting means for directing radiant energy to said sensors and then to the interferometer;
- and radiant energy demodulator means connected to said interferometer.
- View Dependent Claims (5, 6, 7)
Specification