Temperature sensor based on twisted double-core optical fiber
A technology of temperature sensor and dual-core optical fiber, which is applied in thermometers, thermometers with physical/chemical changes, coupling of optical waveguides, etc., can solve the problems of low mechanical strength of sensors and single method of interferometer dispersion turning point, etc., and achieve good mechanical Strength and reliability, high sensitivity effects
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0033] The embodiment of the present invention is based on the temperature sensor of the twisted dual-core optical fiber. By twisting the dual-core optical fiber, the group optical path difference of the fundamental mode of the two cores of the dual-core optical fiber can be adjusted, so that the sensor can work in the quasi-dispersion mode of the interferometer. turning point state.
[0034] figure 1 It is a schematic structural diagram of a temperature sensor based on a twisted dual-core fiber in an example of the present invention. The embodiment of the present invention is based on a twisted ...
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