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|Title:||Inscription of polymer optical fiber Bragg grating at 962 nm and its potential in strain sensing|
Peng, Gang Ding
|Subjects:||Fiber Bragg grating (FBG)|
Fiber grating fabrication
Measurement of strain
Polymer optical fiber (POF)
|Source:||IEEE photonics technology letters, 1 Nov. 2010, v.22, no. 21, p. 1562-1564.|
|Abstract:||Fiber Bragg grating (FBG) with a 962-nm Bragg wavelength was fabricated in trans-4-stilbenemethanol doped poly(methyl methacrylate) polymer optical fibers (POFs) using a phase mask with 17% zeroth-order diffraction for the inscription wavelength of 325 nm. The effect of zeroth-order diffraction of the phase masks on FGB in POF was first examined by observing micrographs of the gratings. A linear relationship between the fiber axial strain and shift of the FBG was observed up to 6.5% tensile strain with a strain sensitivity of 0.916 pm /με. However, this shift was notably affected by the time-dependent stress relaxation in the fiber, especially when the FBG was subject to a relatively higher strain > 2%.|
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|Appears in Collections:||ITC Journal/Magazine Articles|
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