Femtosecond laser microstructured fibre refractive index sensor with temperature compensation

2010 ◽  
Vol 46 (24) ◽  
pp. 1616 ◽  
Author(s):  
P. Lu ◽  
Q. Chen
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Temperature Compensation ◽  
Refractive Index Sensor ◽  
Microstructured Fibre

scholarly journals Simultaneous Measurement of Temperature and Refractive Index Using High Temperature Resistant Pure Quartz Grating Based on Femtosecond Laser and HF Etching

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1028
Author(s):  
Na Zhao ◽  
Qijing Lin ◽  
Kun Yao ◽  
Fuzheng Zhang ◽  
Bian Tian ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Temperature ◽  
Femtosecond Laser ◽  
Optical Fiber ◽  
Temperature Response ◽  
High Sensitivity ◽  
Xrd Analysis ◽  
Refractive Index Sensor ◽  
Compact Structure ◽  
Fluid Analysis

The optical fiber temperature and refractive index sensor combined with the hollow needle structure for medical treatment can promote the standardization of traditional acupuncture techniques and improve the accuracy of body fluid analysis. A double-parameter sensor based on fiber Bragg grating (FBG) is developed in this paper. The sensor materials are selected through X-ray diffraction (XRD) analysis, and the sensor sensing principle is theoretically analyzed and simulated. Through femtosecond laser writing pure silica fiber, a high temperature resistant wavelength type FBG temperature sensor is obtained, and the FBG is corroded by hydrofluoric acid (HF) to realize a high-sensitivity intensity-type refractive index sensor. Because the light has dual characteristics of energy and wavelength, the sensor can realize simultaneous dual-parameter sensing. The light from the lead-in optical fiber is transmitted to the sensor and affected by temperature and refractive-index; then, the reflection peak is reflected back to the lead-out fiber by the FBG. The high temperature response and the refractive index response of the sensor were measured in the laboratory, and the high temperature characteristics of the sensor were verified in the accredited institute. It is demonstrated that the proposed sensor can achieve temperature sensing up to 1150 °C with the sensitivity of 0.0134 nm/°C, and refractive sensing over a refractive range of 1.333 to 1.4027 with the sensitivity of −49.044 dBm/RIU. The sensor features the advantages of two-parameter measurement, compact structure, and wide temperature range, and it exhibits great potential in acupuncture treatment.

Optical Fiber High-Temperature and Refractive Index Sensor Fabricated by Femtosecond Laser

2019 ◽  
Vol 56 (17) ◽  
pp. 170633
Author(s):  
董航宇 Hangyu Dong ◽  
刘昌宁 Changning Liu ◽  
孙四梅 Simei Sun ◽  
江超 Chao Jiang ◽  
张傲岩 Aoyan Zhang ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Temperature ◽  
Femtosecond Laser ◽  
Optical Fiber ◽  
Refractive Index Sensor

Surface plasmon resonance refractive index sensor based on fiber-interface waveguide inscribed by femtosecond laser

2019 ◽  
Vol 44 (10) ◽  
pp. 2434 ◽  
Author(s):  
Yunfang Zhang ◽  
Changrui Liao ◽  
Chupao Lin ◽  
Yu Shao ◽  
Ying Wang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Surface Plasmon Resonance ◽  
Femtosecond Laser ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Refractive Index Sensor

Refractive Index Sensor of V-Shaped Fiber Microstructure Fabricated by Femtosecond Laser

2013 ◽  
Vol 677 ◽  
pp. 109-112
Author(s):  
L. Zheng ◽  
X.Y. Sun ◽  
W. Deng
Keyword(s):  
Refractive Index ◽  
Light Intensity ◽  
Femtosecond Laser ◽  
Total Internal Reflection ◽  
Fabrication Process ◽  
Refractive Index Sensor ◽  
The Core ◽  
Surrounding Refractive Index ◽  
Fs Laser ◽  
Fiber Microstructure

The defect of fiber core or cladding near the core could result in imperfect total internal reflection (ATR) via multiple internal reflections along the fiber and attenuated light intensity of fiber. In this paper, V-shaped fiber microstructure was fabricated by femtosecond (fs) laser. The loss of light energy is sensitive to surrounding refractive index (RI), which is used to detect the refractive index of surrounding media. The depth of V-shaped microstructure is controlled by fabrication process, and it found that it has evident effect on RI sensitivity.

scholarly journals Sensitive refractive index sensor based on an assembly-free fiber multi-mode interferometer fabricated by femtosecond laser

2017 ◽  
Vol 25 (24) ◽  
pp. 29896 ◽  
Author(s):  
Pengcheng Chen ◽  
Xuewen Shu ◽  
Fangcheng Shen ◽  
Haoran Cao
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Refractive Index Sensor ◽  
Multi Mode

Liquid refractive index sensor based on polymer fiber with micro-holes created by femtosecond laser

2014 ◽  
Vol 12 (9) ◽  
pp. 090601-90604 ◽  
Author(s):  
Wenchao Dong Wenchao Dong ◽  
Jue Wei Jue Wei ◽  
Xuehai Wang Xuehai Wang ◽  
Zhihui Kang Zhihui Kang ◽  
Xiaofeng Xu Xiaofeng Xu
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Refractive Index Sensor ◽  
Polymer Fiber ◽  
Micro Holes

scholarly journals On-chip temperature compensation in an integrated slot-waveguide ring resonator refractive index sensor array

2010 ◽  
Vol 18 (4) ◽  
pp. 3226 ◽  
Author(s):  
Kristinn B. Gylfason ◽  
Carl F. Carlborg ◽  
Andrzej Kazmierczak ◽  
Fabian Dortu ◽  
Hans Sohlström ◽  
...  
Keyword(s):  
Refractive Index ◽  
Temperature Compensation ◽  
Sensor Array ◽  
Ring Resonator ◽  
Refractive Index Sensor ◽  
Slot Waveguide ◽  
Chip Temperature ◽  
Waveguide Ring ◽  
On Chip
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