Determination of nonlinear coefficient and group-velocity-dispersion of bismuth-based high nonlinear optical fiber by four-wave-mixing
| Autor: | Naoki Sugimoto, Tomoharu Hasegawa, Tatsuo Nagashima |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Optical fiber
Materials science business.industry Physics::Optics chemistry.chemical_element Graded-index fiber Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Bismuth Optics Double-clad fiber Zero-dispersion wavelength chemistry law Dispersion (optics) Dispersion-shifted fiber Electrical and Electronic Engineering Physical and Theoretical Chemistry business Photonic-crystal fiber |
| Zdroj: | Optics Communications. 281:782-787 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2007.10.030 |
| Popis: | Nonlinear coefficient and group-velocity-dispersion of bismuth-based nonlinear fibers were determined by four-wave-mixing measurements. The wavelength dependence of refractive index of bulk bismuth-based glasses was also measured to estimate the material dispersion and waveguide dispersion. A newly developed bi-directional four-wave-mixing configuration enabled us to determine all fiber parameters simultaneously. The obtained fiber nonlinearity γ ∼ 1000 W−1 km−1 of bismuth-based nonlinear fiber is the highest one in the step-index fiber made of oxide glasses as expected from a high refractive index at 1550 nm. Dispersion analysis reveals that the both material dispersion and waveguide dispersion affect to the large group-velocity-dispersion of bismuth-based nonlinear fiber. |
| Databáze: | OpenAIRE |
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