Pressure dependence of fiber Bragg grating inscribed in perfluorinated polymer fiber
| Autor: | Ryo Ishikawa, Heeyoung Lee, Amedee Lacraz, Antreas Theodosiou, Kyriacos Kalli, Yosuke Mizuno, Kentaro Nakamura |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
All-silica fiber
PHOSFOS Materials science business.industry Hydrostatic pressure 02 engineering and technology Long-period fiber grating Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 020210 optoelectronics & photonics Optics Zero-dispersion wavelength Fiber Bragg grating 0202 electrical engineering electronic engineering information engineering Dispersion-shifted fiber Electrical and Electronic Engineering business Plastic optical fiber |
| Zdroj: | IEEE Photonics Technology Letters. 29(no. 24):2167-2170 |
| Popis: | We investigate the hydrostatic pressure dependence of the Bragg wavelength of a fiber Bragg grating (FBG) inscribed in a perfluorinated graded-index (PFGI-) polymer optical fiber (POF) at 1550 nm. At 0.5 MPa, the Bragg wavelength increased with time and became almost constant ~150 min later. Such a long time constant probably originates from the unique structure of the PFGI-POF, which has a thick overcladding around its core and cladding. The pressure-dependence coefficient without considering the time constant was estimated to be 1.3 nm/MPa; this is over five times the values of other types of POF-FBGs. This indicates that by removing the overcladding of the PFGI-POF, fast-response high-sensitivity pressure sensing will be feasible. Once the Bragg wavelength became constant at 0.5 MPa, the pressure-dependence coefficient of the Bragg wavelength was measured to be −0.13 nm/MPa, the absolute value of which was comparable with those of other POF-FBGs, but with an opposite sign. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|