Temperature sensor and temperature sensing system based on active phase-shifted fibre grating

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	Temperature sensor and temperature sensing system based on active phase-shifted fibre grating
其他题名	Temperature sensor and temperature sensing system based on active phase-shifted fibre grating
	GUO, JIAN; WANG, CHANG; NI, JIASHENG; PENG, GANGDING; SONG, ZHIQIANG; QI, HAIFENG; WANG, WEITAO
	2018-04-12
专利权人	LASER INSTITUTE OF SHANDONG ACADEMY OF SCIENCE
公开日期	2018-04-12
授权国家	美国
专利类型	发明申请
摘要	Provided are a temperature sensor and an active phase-shifted grating-based temperature sensing system, relating to a fibre sensing technical field. The temperature sensor comprises a pump laser, a wavelength division multiplexer, an optical detector and an active phase-shifted fibre grating with π phase shift. Pump light emitted by the pump laser enters the active phase-shifted fibre grating through the wavelength division multiplexer. The active phase-shifted fibre grating absorbs the pump light and emits laser light, which travels back through the wavelength division multiplexer and enters the optical detector. The optical detector measures output power of the active phase-shifted fibre grating, to analyze the power to obtain ambient temperature of the active phase-shifted fibre grating. Compared with wavelength demodulation based fibre grating sensors, this temperature sensor can obtain ambient temperature of the active phase-shifted fibre grating solely by analyzing output power of the active phase-shifted fibre grating measured by the optical detector.
其他摘要	提供一种温度传感器和基于有源相移光栅的温度传感系统，涉及光纤传感技术领域。温度传感器包括泵浦激光器，波分复用器，光学检测器和具有π相移的有源相移光纤光栅。泵浦激光器发出的泵浦光通过波分复用器进入有源相移光纤光栅。有源相移光纤光栅吸收泵浦光并发射激光，激光通过波分复用器返回并进入光检测器。光学检测器测量有源相移光纤光栅的输出功率，分析功率以获得有源相移光纤光栅的环境温度。与基于波长解调的光纤光栅传感器相比，该温度传感器仅通过分析由光学检测器测量的有源相移光纤光栅的输出功率就可以获得有源相移光纤光栅的环境温度。
主权项	A temperature sensor based on an active phase-shifted fibre grating, comprising: a pump laser; a wavelength division multiplexer; an optical detector; and an active phase-shifted optical fibre grating with π phase shift, wherein pump light, emitted by the pump laser, is configured to enter the active phase-shifted optical fibre grating through the wavelength division multiplexer; the active phase-shifted fibre grating is configured to absorb the pump light and emit laser light, which travels back through the wavelength division multiplexer and enters the optical detector; the optical detector is configured to measure output power of the received laser light from the active phase-shifted optical fibre grating, so as to analyze the output power to obtain an ambient temperature of the active phase-shifted optical fibre grating; and the output power of the laser light from the active phase-shifted optical fibre grating and the ambient temperature of the active phase-shifted optical fibre grating are in a predetermined relation with each other.
申请日期	2017-05-25
专利号	US20180100773A1
专利状态	授权
申请号	US15/605029
公开（公告）号	US20180100773A1
IPC 分类号	G01K11/32 \| G01J1/44
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/62570
专题	半导体激光器专利数据库
作者单位	LASER INSTITUTE OF SHANDONG ACADEMY OF SCIENCE
推荐引用方式 GB/T 7714	GUO, JIAN,WANG, CHANG,NI, JIASHENG,et al. Temperature sensor and temperature sensing system based on active phase-shifted fibre grating. US20180100773A1[P]. 2018-04-12.