Photonic crystal fiber temperature measurement method and sensor filled with mixed liquid
A technology of photonic crystal fiber and temperature measurement, which is applied in the direction of physical/chemical change thermometers, thermometers, measuring devices, etc., can solve the problems of no mature technology and product reports, and achieve the effect of improving sensitivity
Active Publication Date: 2011-12-21
TIANJIN UNIV
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But there is no mature technology and product report
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[0023] The object of the present invention is to provide a kind of PCF temperature sensor with high sensitivity and adjustable working temperature range. Adopting this device and method can be ethanol in the mixture ratio: chloroform=0.3: 0.7, within the scope of -15~0.4 ℃, When the working wavelength is 1600nm, the sensitivity of the sensor reaches 11.2301dB / m / °C; when the mixture ratio is ethanol:methane=0.45:0.55, and the working wavelength is 1600nm in the range of -5~15°C, the sensitivity of the sensor reaches 20.5685dB / m / °C; the sensitivity of the sensor reaches 15.7543dB / m / °C when the mixture ratio is ethanol:methane=0.6:0.4, in the range of -35~-20°C, and the working wavelength is 1600nm.
[0024] The invention is realized through the following technical solutions, a PCF temperature sensor with high sensitivity and adjustable working temperature range of the sensor. Its technical feature is that the PCF sensor includes an adjustable laser source (Agilent 81482A), an LM...
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Abstract
The invention relates to a fiber temperature sensor and provides a method and a sensor for measuring the temperature of a fiber. The method and the sensor are high in sensitivity and adjustable in working temperature range. The invention adopts the technical scheme that: a method for measuring the temperature of a photonic crystal fiber (PCF) filled with a mixed solution comprises the following steps of: preparing a temperature-sensitive mixed solution of ethanol and chloroform according to a ratio of 0.3:0.7, or a mixed solution of ethanol and methyl benzene according to a ratio of 0.45:0.55and a ratio of 0.6:0.4; filling the temperature-sensitive mixed solution into the PCF; respectively welding one section of single-mode fiber at two ends of the PCF, connecting one section of single-mode fiber, which is welded, to a light source, and connecting the other section of single-mode fiber to a power meter; and placing the PCF which is filled with the mixed solution in an environment which is required to be detected and of which the temperature can change for testing. The invention is mainly applicable to temperature detection of the environment.
Description
technical field [0001] The invention relates to an optical fiber temperature sensor, in particular to a method for measuring the temperature of a photonic crystal optical fiber filled with a mixed liquid and the sensor. Background technique [0002] Sensor technology is an important symbol of the development of contemporary science and technology, and has constituted the three pillars of the information industry together with communication technology and computer technology. Among them, optical fiber sensing technology has developed rapidly since the late 1970s, and has become two important fields of optical fiber technology together with optical fiber communication technology. The so-called optical fiber sensing is to convert the measured change into the change of the transmission light parameters (such as light intensity, wavelength, phase and polarization state) in the optical fiber, and determine the measured size by measuring the output light of the optical fiber. Comp...
Claims
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IPC IPC(8): G01K11/32
Inventor 姚建铨汪静丽陆颖王若琪周睿伏祥勇
Owner TIANJIN UNIV