Abstract
We have observed symmetrical sidebands in reflection from Bragg grating written in a silica suspended-core fiber, which are caused by longitudinal periodic refractive index modulation in the Ge-doped suspended-core fiber with a core diameter of ∼1.3 μm. Our simulation shows that the effective refractive index of the guided mode varied by 0.023% along the fiber with a period of ∼650 μm. The periodic index variation can lead to amplitude modulation of fiber Bragg gratings, which can be studied by observing the spectra of a fiber Bragg grating written in the Ge-doped core. In addition, we have also characterized the temperature and strain responses of the fiber Bragg gratings, and showed that both responses in the suspended-core fiber are 20 to 25% lower than that of a fiber Bragg grating written on a conventional fiber.
Original language | English |
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Pages (from-to) | 17373-17381 |
Number of pages | 9 |
Journal | Optics Express |
Volume | 18 |
Issue number | 16 |
DOIs | |
Publication status | Published - 2 Aug 2010 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics