Interaction of Acoustic Phonons and Photons in Highly Nonlinear Photonic Crystal Fibers

被引：0

作者：

Ding S. ^{[1
]}

Yang S. ^{[1
]}

Yang Y. ^{[1
]}

Li J. ^{[2
]}

Chen M. ^{[1
]}

Xie S. ^{[1
]}

机构：

[1] Beijing National Research Center for Information Science and Technology (BNRist), Department of Electronic Engineering, Tsinghua University, Beijing

[2] Wuhan National Laboratory of Optoelectronics, Wuhan

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2019年 / 46卷 / 05期

关键词：

Guided acoustic-wave Brillouin scattering; Nonlinear optics; Phonon; Photonic crystal fiber; Sagnac loop;

D O I：

10.3788/CJL201946.0508027

中图分类号：

学科分类号：

摘要：

Highly nonlinear photonic crystal fibers have the characteristics of small core and large refractive index contrast. Due to its periodic air hole structure, the phonons generated by the guided acoustic-wave Brillouin scattering (GAWBS) are tightly trapped in the core area and interact significantly with photons. The refractive index of the fiber will be modulated by phonons, resulting in a phase modulation on optical waves. Using the Sagnac interferometry to transform phase modulation to intensity modulation, we demonstrate the generation and detection of phonons by GAWBS in the photonic crystal fiber in the 1550 nm and 1060 nm bands, respectively. The experimental results show that the fundamental mode frequency of acoustic phonons is 1.24 GHz for both cases with the pump wavelengths of 1550 nm and 1060 nm, respectively, which verifies the theory that the phonon frequency in forward Brillouin scattering is independent of the pump wavelength. © 2019, Chinese Lasers Press. All right reserved.

引用

共 17 条

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