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Optics Letters

Optics Letters


  • Vol. 28, Iss. 21 — Nov. 1, 2003
  • pp: 2022–2024

Brillouin scattering spectrum in photonic crystal fiber with a partially germanium-doped core

Lufan Zou, Xiaoyi Bao, and Liang Chen  »View Author Affiliations

Optics Letters, Vol. 28, Issue 21, pp. 2022-2024 (2003)

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The Brillouin scattering spectrum in a photonic crystal fiber (PCF) with a partially Ge-doped core is measured with a pump–probe technique at a wavelength of 1320 nm. One main peak and four subpeaks are observed. The main peak has a Lorentzian shape with the bandwidth ΔνB=66MHz . Its intensity is six times higher than that from a standard single-mode fiber measured under the same conditions, which is consistent with the ratio of (1/APCFeff) /(1/ASMFeff) , where Aeff is the effective area of the fibers. The temperature coefficient for the main peak is 0.96 MHz/ °C. We believe that the subpeaks are caused by an interaction between light-wave and guided modes of longitudinal acoustic waves in the graded-Ge-doped region, the silica region, and the microstructured cladding. An analysis of the guiding and antiguiding properties of the PCF for acoustic waves is presented.

© 2003 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(190.5890) Nonlinear optics : Scattering, stimulated
(290.5830) Scattering : Scattering, Brillouin
(290.5900) Scattering : Scattering, stimulated Brillouin

Lufan Zou, Xiaoyi Bao, and Liang Chen, "Brillouin scattering spectrum in photonic crystal fiber with a partially germanium-doped core," Opt. Lett. 28, 2022-2024 (2003)

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