Tunable gratings in a hollow-core photonic bandgap fiber based on acousto-optic interaction

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We demonstrate a coherent intermodal coupling in a hollow-core photonic bandgap fibers (PBGF) using an acoustic grating. A theoretical study on the properties of acoustic and optical wave propagating the PBGF is performed indicating that the applied frequency higher than 10 MHz is required to obtain the acousto-optic interaction at the wavelength around 1550 nm. Wavelength-tunable coupling from fundamental mode to higher-order core modes is achieved with more than 90% coupling efficiency at the applied frequency of 11.54 MHz. The low dispersive properties and the mode filed distributions of the higher-order guided modes of the air-core PBGF in the experiment show reasonable agreement with the simulation results. (C) 2009 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2009-06
Language
English
Article Type
Article
Keywords

CRYSTAL FIBERS; GAP FIBERS; ACOUSTIC-WAVES; SURFACE-MODES; AIR; FILTER

Citation

OPTICS EXPRESS, v.17, no.12, pp.9933 - 9939

ISSN
1094-4087
DOI
10.1364/OE.17.009933
URI
http://hdl.handle.net/10203/21121
Appears in Collection
PH-Journal Papers(저널논문)
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