Role of microstructure on guided acoustic wave Brillouin scattering in photonic crystal fibers
| Autor: | Gilles Melin, E. Carry, S. Lempereur, Vincent Laude, Anne Fleureau, Hervé Maillotte, Jean-Charles Beugnot, Thibaut Sylvestre |
|---|---|
| Přispěvatelé: | Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), DRAKA (DRAKA), SPIE, Muphy |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Diffraction
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] Guided wave testing Optical fiber Materials science Scattering Phonon business.industry Physics::Optics 02 engineering and technology Acoustic wave 01 natural sciences law.invention [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] 020210 optoelectronics & photonics Optics Brillouin scattering law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering 010306 general physics business Photonic-crystal fiber |
| Zdroj: | Proc. Soc. Photo.-Opt. Instrum. Eng. Photonic Crystal Fibres Photonic Crystal Fibres, May 2009, Prague, Czech Republic. pp.73570S, ⟨10.1117/12.821100⟩ |
| DOI: | 10.1117/12.821100⟩ |
| Popis: | International audience; We study guided acoustic wave Brillouin scattering (GAWBS) in several photonic crystal fibers (PCF) with different kind of air-hole microstructure and we show this effect is enhanced only for a few acoustic phonons. The results of our numerical simulations based on a finite element method reveal that these acosuti waves emitted in the GHz range are indeed trapped within the air-hole microstructure, in good agreement with experimental observations. The periodic wavelength-scale air-hole microstructure of solid-core PCFs can indeed drastically alter the transverse elastic waves distribution and therefore forward Brillouin scattering compared to what is commonly observed in conventional all-silica fibers. We show additionnally that the elasto-optic diffraction coefficient and the transverse acousto-optic field overlap are maximum for these acoustic waves. For the most intense GAWBS modes, we investigate the scattering efficiency and temperature dependence of the fundamental phonon frequency for sensing applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|