Ultrafast Resolution-Enhanced Digital Optical Frequency Comb-Based BOTDA with Pump Pulse Array Coding

被引：5

作者：

Wu, Yichang ^{[1
]}

Yang, Chengkun ^{[1
]}

Pan, Jingshun ^{[1
]}

Sui, Qi ^{[2
]}

Wang, Dawei ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510275, Peoples R China

[2] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China

来源：

SENSORS | 2020年 / 20卷 / 22期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Brillouin; ultrafast; distributed sensing; pump pulse array; resolution enhancement; SNR; SPATIAL-RESOLUTION; FIBERS;

D O I：

10.3390/s20226411

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this letter, a resolution enhancement and signal-to-noise ratio (SNR) improvement scheme for digital optical frequency comb (DOFC)-based Brillouin optical time-domain analysis (BOTDA) ultrafast distributed sensing employing a pump pulse array is proposed. Based on the properties of the time-invariant linear system and the cyclic revolution theorem, experimental results indicate that its spatial resolution reaches 10.24 m while the frequency uncertainty is below 2 MHz over a 9.5 km fiber. Moreover, the response time is only 209.6 mu s and the temperature measurement error is less than 0.52 degrees C.

引用

页码：1 / 10

页数：10

共 8 条

[1] DBA-Based BOTDA Using Optical Comb Pump and Pulse Coding With a Single Laser
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[8] Optical frequency comb-based measurements and the revisited assignment of high-resolution spectra of CH2Br2 in the 2960 to 3120 cm-1 region
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