FBG hot-wire anemometer based on incorporating with waist-enlarged fiber bitaper

ZHAO Xue-fang; WANG Xin-huai; DONG Xin-yong

doi:10.13873/J.1000-9787(2015)10-0057-03

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FBG hot-wire anemometer based on incorporating with waist-enlarged fiber bitaper

更新时间：2025-09-11

- FBG hot-wire anemometer based on incorporating with waist-enlarged fiber bitaper
- Vol. 34, Issue 10, Pages: 57-59+62(2015)
- 作者机构：
  
  中国计量学院光学与电子科技学院
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2015)10-0057-03
  CLC： TP212
- Published：2015
- 稿件说明：
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[1]赵学芳,王新淮,董新永.基于腰椎放大熔接的FBG热线式风力计[J].传感器与微系统,2015,34(10):57-59+62.

ZHAO Xue-fang, WANG Xin-huai, DONG Xin-yong. FBG hot-wire anemometer based on incorporating with waist-enlarged fiber bitaper[J]. 2015, 34(10): 57-59+62.
[1]赵学芳,王新淮,董新永.基于腰椎放大熔接的FBG热线式风力计[J].传感器与微系统,2015,34(10):57-59+62. DOI： 10.13873/J.1000-9787(2015)10-0057-03.

ZHAO Xue-fang, WANG Xin-huai, DONG Xin-yong. FBG hot-wire anemometer based on incorporating with waist-enlarged fiber bitaper[J]. 2015, 34(10): 57-59+62. DOI： 10.13873/J.1000-9787(2015)10-0057-03.

摘要

提出了一种基于腰椎放大熔接和光纤Bragg光栅（FBG）的热线式风力计

传感结构由表面镀金属银膜的FBG和腰椎放大光纤熔接点构成。腰椎放大熔接点将高功率的泵浦激光由纤芯耦合到光纤包层

被镀银膜吸收产生热量

从而使FBG的温度升高。当气流经FBG时

部分热量会被带走

导致FBG的温度降低。FBG的中心波长随温度的变化而变化

因此

通过测量FBG波长的漂移即可以测得气流速度。实验结果表明:此FBG热线式风力计的测量范围为0

3.7 m/s

灵敏度和分辨率分别可达1.0 nm/（m/s）和0.001 m/s。

Abstract

A hot-wire anemometer based on a silver-coated fiber Bragg grating（ FBG） incorporating with a waistenlarged fiber bitaper is proposed. The waist-enlarged fiber bitaper couples the light from a pump laser propagating along the fiber into the fiber cladding

the light is absorbed by silver film and generate heat

which increases temperature of the FBG. Air flow cools down the FBG and shifts the Bragg wavelength to shorter wavelength. FBG wavelength shifts with the change of temperature. Anemometer is therefore realized by monitoring the wavelength changes of the FBG. Experimental results show that the measurement range is 0

13. 7 m / s

the sensitivity is up to1. 0 nm /（ m / s） and resolution is 0. 001 m / s.

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references

Miniature refractometer based on Mach–Zehnder interferometer with waist-enlarged fusion bitaper [J] . Kai Ni,Xinyong Dong,Chi Chiu Chan,Tao Li,Limin Hu,Wenwen Qian. Optics Communications . 2012

X-probe flow sensor using self-powered active fiber Bragg gratings [J] . Charles Jewart,Ben McMillen,Sung Kwon Cho,Kevin P. Chen. Sensors & Actuators: A. Physical . 2005 (1)

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