Dynamic evolution of the spectrum of long-period fiber Bragg gratings fabricated from hydrogen-loaded optical fiber by ultraviolet laser irradiation
| Autor: | Takashi Yokouchi, Yuji Masuda, Keio Fujita, Jun-pei Mohri, Yoshifumi Suzaki, Masanori Kimura, Seiki Ejima, Keisuke Nakayama, Yasuo Mizutani, Makoto Yamauchi, Kenji Sakamoto, Susumu Kimura, Maki Ando |
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| Rok vydání: | 2005 |
| Předmět: |
PHOSFOS
Materials science business.industry Materials Science (miscellaneous) Physics::Optics Polarization-maintaining optical fiber Long-period fiber grating Industrial and Manufacturing Engineering Optics Fiber Bragg grating Fiber laser Optoelectronics Dispersion-shifted fiber Physics::Atomic Physics Business and International Management business Plastic optical fiber Photonic-crystal fiber |
| Zdroj: | Applied optics. 44(33) |
| ISSN: | 1559-128X |
| Popis: | Long-period fiber Bragg gratings fabricated by exposure of hydrogen-loaded fiber to UV laser light exhibit large-scale dynamic evolution for approximately two weeks at room temperature. During this time two distinct features show up in their spectrum: a large upswing in wavelength and a substantial deepening of the transmission minimum. The dynamic evolution of the transmission spectrum is explained quantitatively by use of Malo’s theory of UV-induced quenching [ Electron. Lett.30, 442 ( 1994)] followed by refilling of hydrogen in the fiber core and the theory of hydrogen diffusion in the fiber material. The amount of hydrogen quenched by the UV irradiation is 6% of the loaded hydrogen. |
| Databáze: | OpenAIRE |
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