Characteristics of forward stimulated Brillouin scattering effect in silica fibers

Liang Chen; Peng Wang; Panyun Gao; Xiu Zhang; Yong Zhou; Weiqing Gao

doi:10.1117/12.2502633

5 November 2018 Characteristics of forward stimulated Brillouin scattering effect in silica fibers

Liang Chen, Peng Wang, Panyun Gao, Xiu Zhang, Yong Zhou, Weiqing Gao

Proceedings Volume 10814, Optoelectronic Devices and Integration VII; 108140S (2018) https://doi.org/10.1117/12.2502633
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

In this paper, the forward Brillouin scattering frequency shifts of step-index fibers and photonic crystal fibers (PCFs) with different core diameters is investigated by numerical simulation. The multiple Brillouin scattering peaks with the range from 20 to 800 MHz are generated in the step-index fibers. We find that there are no changes in Brillouin scattering frequency shifts when the core diameter is changed, but the scattering efficiency is different. In the PCFs with periodic air holes, there are a few dominant peaks and the frequency shifts vary with the core diameter changing. For the core diameter of 11.6 μm, there are three peaks at 327.39, 556.48 and 824.14 MHz, respectively. When the core diameter decreases to 2.32 μm, the frequency shifts of the forward Brilloun scattering are 1.619, 2.779 and 4.123 GHz, respectively. The core diameter of the PCFs can affect the frequency shifts of the forward Brilloun scattering and the frequency shifts increase with the core diameter decreasing. The difference between the step-index fibers and PCFs results from the influence of the fiber microstructure on the guided acoustic wave. Our simulated results will be instructive for the design of fiber microstructure.

Citation Download Citation

Liang Chen, Peng Wang, Panyun Gao, Xiu Zhang, Yong Zhou, and Weiqing Gao "Characteristics of forward stimulated Brillouin scattering effect in silica fibers", Proc. SPIE 10814, Optoelectronic Devices and Integration VII, 108140S (5 November 2018); https://doi.org/10.1117/12.2502633

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