Temperature sensor device based on a chalcogenide glass material and construction method thereof

A technology of chalcogenide glass and sensing devices, which is applied in the field of sensing devices, can solve the problems that high-sensitivity sensing detection cannot be applied, and achieve the effects of wide infrared transmission range, uniform spatial distribution of light energy, and wide application prospects
CN107907239AActive Publication Date: 2018-04-13NINGBO UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO UNIV
Publication Date
2018-04-13

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Abstract

The invention discloses a temperature sensor device based on a chalcogenide glass material and a construction method thereof. The temperature sensor device includes a broadband light source, a first spectrum analyzer and a long-period fiber grating made of a chalcogenide glass material. The two ends of the long-period fiber grating are respectively connected with the broadband light source and thefirst spectrum analyzer. The long-period fiber grating is obtained in a way that a single-mode chalcogenide glass fiber is subjected to fused tapering to form a tapered chalcogenide fiber and the tapered chalcogenide fiber is written in the long-period fiber grating via femtosecond laser pulses. The temperature sense device based on the chalcogenide glass material has a temperature sensitivity of2.97186 nm / DEG C, which is significantly higher than the temperature sensitivity of 0.04-0.1 nm / DEG C of the traditional quartz long-period fiber grating sensor, is more suitable for high-sensitivitytemperature transmission, and has a wider application prospect in the field of high sensitivity sensing.
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Description

technical field

[0001] The invention relates to a sensing device, in particular to a temperature sensing device based on a chalcogenide glass material and a construction method thereof. Background technique

[0002] Due to the coupling between the forward-propagating core mode and the co-transporting cladding mode, the long-period fiber grating can couple the light of a certain frequency band in the guided wave to the cladding and lose it, and its period ranges from tens of microns to between hundreds of microns. The transmission characteristics of long-period fiber gratings will change due to external stress, ambient temperature and other factors, and the sensing information can be obtained by tuning the resonance wavelength. The advantages of fiber grating sensing are strong anti-electromagnetic interference, small size, can be embedded in materials, and easy to connect with optical fibers. Compared with fiber Bragg gratings, long-period fiber gratings are more sensitive...

Claims

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