Modal-interference-based temperature sensing using plastic optical fibers: markedly enhanced sensitivity near glass-transition temperature

2015 ◽  
Author(s):  
Goki Numata ◽  
Neisei Hayashi ◽  
Marie Tabaru ◽  
Yosuke Mizuno ◽  
Kentaro Nakamura
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Optical Fibers ◽  
Temperature Sensing ◽  
Enhanced Sensitivity ◽  
Modal Interference ◽  
Plastic Optical Fibers

Effect of cladding layer glass transition temperature on thermal resistance of graded-index plastic optical fibers

2014 ◽  
Vol 46 (11) ◽  
pp. 823-826 ◽  
Author(s):  
Hirotsugu Yoshida ◽  
Ryosuke Nakao ◽  
Yuki Masabe ◽  
Kotaro Koike ◽  
Yasuhiro Koike
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Thermal Resistance ◽  
Optical Fibers ◽  
Graded Index ◽  
Cladding Layer ◽  
Plastic Optical Fibers

New Stable Iodide Glasses in the Cd-As-I and Cd-As-Ge-I Systems

1989 ◽  
Vol 172 ◽  
Author(s):  
Jong Heo ◽  
George H. Sigel
Keyword(s):  
Differential Scanning Calorimetry ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Optical Fibers ◽  
Liquid Water ◽  
Infrared Region ◽  
Chemical Durability ◽  
Scanning Calorimetry ◽  
Glass Forming

AbstractIodide glasses presently being investigated suffer from their poor glass forming abilities, thermal instabilities and general lack of chemical durability. Glasses in the Cd-As-I and Cd-As-Ge-I systems are investigated in this study for the purpose of developing water-resistant, thermally stable iodide glasses and optical fibers. Differential scanning calorimetry(DSC) showed that glasses in these systems have glass transition temperature(Tg) values above 300°C. Devitrification of glasses during cooling and reheating can be suppressed by incorporating small amount of Ge atoms into ternary Cd-As-I glasses. They are transparent up to 14μm in the infrared region with excellent durability against liquid water at 90°C.

Study of the Glass Transition Temperature of As-S Glasses for the Fabrication of Chalcogenide Optical Fibers

2013 ◽  
Vol 4 (3) ◽  
pp. 256-265 ◽  
Author(s):  
Igor V. Skripachev ◽  
Mohamed El-Amraoui ◽  
Younes Messaddeq ◽  
Silvia H. Santagneli
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Optical Fibers

The Preliminary Research on the Coating of FBG Embedded in Composites used in Large Aircraft

2011 ◽  
Vol 239-242 ◽  
pp. 540-543
Author(s):  
Yan Zi Yin ◽  
Ji Hui Wang ◽  
Han Li ◽  
Jiu Xiao Sun ◽  
Heng Tian ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Optical Fiber ◽  
Optical Fibers ◽  
Heating Temperature ◽  
Uv Curable ◽  
Fbg Sensors ◽  
Preliminary Research ◽  
Large Aircraft

The optical fibers with epoxy acrylates and urethane acrylates UV-curable coatings were embedded in composites. It’s found that after high-temperature heated, when the coating’s glass transition temperature was higher than the heating temperature, the microstructure of the coating would not change, but when the coating’s glass transition temperature was lower than the heating temperature, the coating would detached from optical fiber. FBG (fiber Bragg grating) sensors with coating and naked FBG (without coating) sensors were embedded in composite materials to monitor impacting damage. It was found that when the coating broke away from the optical fiber which was embedded in the composites, the sensitivity of the FBG sensors would reduce.

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