Spectral Analysis of Brillouin Dynamic Grating Based on Heterodyne Detection

被引：4
|
作者：
Zou, Weiwen [1 ]
Chen, Jianping [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai Key Lab Nav & Locat Based Serv, Dept Elect Engn, Shanghai 200240, Peoples R China
来源：
APPLIED PHYSICS EXPRESS | 2013年 / 6卷 / 12期
基金：
中国国家自然科学基金;
关键词：
POLARIZATION-MAINTAINING FIBER; MODE OPTICAL-FIBERS; GAIN GRATINGS; SCATTERING; BIREFRINGENCE; TEMPERATURE; GENERATION; STRAIN; DISCRIMINATION;
D O I：
10.7567/APEX.6.122503
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Spectral analysis based on heterodyne detection is used to investigate Brillouin dynamic grating (BDG) in a small-core polarization-maintaining optical fiber. Thanks to direct heterodyning of the readout and diffraction waves, essential BDG properties can be fully investigated. It is experimentally characterized that the BDG diffraction wave has an identical frequency downshift from the readout wave as the pump-probe frequency offset in the BDG generation, which straightforwardly verifies the theoretical estimation of the BDG's phase-matching condition for the first time to our best knowledge. The spectral analysis also confirms that the maximum power of the main peak changes in the same way with the stimulated Brillouin gain and has an exponential (linear) dependence on the pump (probe) power. (C) 2013 The Japan Society of Applied Physics
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页数：4
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