Optical Microfiber All-Optical Phase Modulator for Fiber Optic Hydrophone

被引：8

作者：

Li, Minwei ^{[1
,2
,3
]}

Yu, Yang ^{[2
,3
]}

Lu, Yang ^{[4
]}

Hu, Xiaoyang ^{[4
]}

Wang, Yaorong ^{[2
,3
]}

Qin, Shangpeng ^{[1
,2
,3
]}

Lu, Junyang ^{[1
,2
,3
]}

Yang, Junbo ^{[2
]}

Zhang, Zhenrong ^{[1
]}

机构：

[1] Guangxi Univ, Sch Comp Elect & Informat, Guangxi Key Lab Multimedia Commun & Network Techn, Nanning 530004, Peoples R China

[2] Natl Univ Def Technol, Coll Liberal Arts & Sci, Changsha 410073, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China

[4] Natl Univ Def Technol, Coll Meteorol & Oceanog, Changsha 410073, Peoples R China

来源：

NANOMATERIALS | 2021年 / 11卷 / 09期

基金：

中国国家自然科学基金;

关键词：

optical microfiber; PGC demodulation; fiber optical hydrophone; all-optical; SILICA NANOWIRES; SENSORS; NANOFIBERS;

D O I：

10.3390/nano11092215

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In order to meet the needs of phase generated carrier (PGC) demodulation technology for interferometric fiber optic hydrophones, we proposed an optical microfiber all-optical phase modulator (OMAOPM) based on the photo-induced thermal phase shift effect, which can be used as a phase carrier generation component, so as to make the modulation efficiency and working bandwidth of this type of modulator satisfy the requirements of underwater acoustic signal demodulation applications. We analyzed the modulation principle of this modulator and optimized the structural parameters of the optical microfiber (OM) when the waist length and waist diameter of OM are 15 mm and 1.4 mu m, respectively. The modulation amplitude of the modulator can reach 1 rad, which can meet the requirements of sensing applications. On this basis, the fiber optical hydrophone PGC-Atan demodulation system was constructed, and the simulated underwater acoustic signal test demodulation research was carried out. Experimental results showed that the system can demodulate underwater acoustic signals below 1 kHz.

引用

页数：11

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