scholarly journals Sandwiched Long-Period Fiber Grating Fabricated by MEMS Process for CO2 Gas Detection

Micromachines ◽  
2016 ◽  
Vol 7 (3) ◽  
pp. 35 ◽  
Author(s):  
Chao-Wei Wu ◽  
Chia-Chin Chiang
Keyword(s):  
Gas Detection ◽  
Fiber Grating ◽  
Co2 Gas ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating ◽  
Mems Process

scholarly journals Double Notched Long-Period Fiber Grating Characterization for CO2 Gas Sensing Applications †

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3206 ◽  
Author(s):  
Hsiang-Chang Hsu ◽  
Tso-Sheng Hsieh ◽  
Tzu-Hsuan Huang ◽  
Liren Tsai ◽  
Chia-Chin Chiang
Keyword(s):  
Gas Sensor ◽  
Transmission Loss ◽  
Gas Sensing ◽  
Fiber Grating ◽  
Co2 Gas ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Sensing Applications ◽  
Co2 Gas Sensor ◽  
Period Fiber Grating

In this study, we applied a double-sided inductively coupled plasma (ICP) process to nanostructure long-period fiber grating (LPFG) in order to fabricate a double-notched LPFG (DNLPFG) sensor with a double-sided surface corrugated periodic grating. Using the sol-gel method, we also added thymol blue and ZnO to form a gas sensing layer, thus producing a DNLPFG CO2 gas sensor. The resulting sensor is the first double-sided etching sensor used to measure CO2. The experimental results showed that as the CO2 concentration increased, the transmission loss increased, and that the smaller the fiber diameter, the greater the sensitivity and the greater the change in transmission loss. When the diameter of the fiber was 32 μm (and the period was 570 μm) and the perfusion rate of CO2 gas was 15%, the maximum loss variation of up to 3.881 dB was achieved, while the sensitivity was 0.2146 dB/% and the linearity was 0.992. These results demonstrate that the DNLPG CO2 gas sensor is highly sensitive.

High-sensitivity long-period fiber grating sensor with SAN/cryptophane A for coal mine gas detection

2013 ◽  
Vol 11 (8) ◽  
pp. 080601-80604 ◽  
Author(s):  
Jianchun Yang Jianchun Yang ◽  
Jing Huang Jing Huang ◽  
Xueming Li Xueming Li ◽  
Shanya Li Shanya Li ◽  
Binbin Luo Binbin Luo ◽  
...  
Keyword(s):  
Coal Mine ◽  
High Sensitivity ◽  
Gas Detection ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Coal Mine Gas ◽  
Fiber Grating Sensor ◽  
Mine Gas ◽  
Period Fiber Grating

Potential-Scanning Sensing for Refractive Index Using an Indium Tin Oxide (ITO)-Coated Long-Period Fiber Grating (LPFG)

2021 ◽  
pp. 1-11
Author(s):  
Takuya Okazaki ◽  
Tatsuya Orii ◽  
Shin-Yinn Tan ◽  
Tomoaki Watanabe ◽  
Akira Taguchi ◽  
...  
Keyword(s):  
Refractive Index ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating

Loading condition estimation using long-period fiber grating array

2020 ◽  
pp. 1-1
Author(s):  
Felipe Oliveira Barino ◽  
Renato Faraco-Filho ◽  
Deivid Campos ◽  
Vinicius N. H. Silva ◽  
Andres P. Lopez-Barbero ◽  
...  
Keyword(s):  
Loading Condition ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Condition Estimation ◽  
Grating Array ◽  
Period Fiber Grating
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