Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/653359
Title: Remote Magnetic Field Sensor Based on Intracavity Absorption of Evanescent Field
Authors: Jia Shi;Yuye Wang;Degang Xu;Genghua Su;Haiwei Zhang;Jiachen Feng;Chao Yan;Shijie Fu;Jianquan Yao
subject: Fiber optics sensors|intracavity sensing|remote sensing
Year: 2016
Publisher: IEEE
Abstract: In this paper, a remote magnetic field sensor based on intracavity absorption of evanescent field is experimentally demonstrated. A single-mode-no-core-single-mode (SNCS) fiber coated with magnetic fluid (MF) is inserted into a fiber ring laser through a circulator and a 3-dB coupler, and it works as the filter and sensing head simultaneously. As the light oscillates in the cavity of the fiber ring laser, intracavity absorption of the evanescent field will be induced in the interface of the no-core fiber and MF. We obtain a magnetic field sensor with a narrow 3-dB bandwidth that is less than 0.05 nm, a high signal-to-noise ratio ~40 dB, and magnetic sensitivity of 52.1 pm/mT and -0.3679 dBm/mT. Moreover, experiments show that it is convenient to achieve remote sensing by selecting different lengths of the transmission optical fiber connecting the circulator and 3-dB coupler, which has a slight impact on the sensitivity.
Description: 
URI: http://localhost/handle/Hannan/159998
http://localhost/handle/Hannan/653359
ISSN: 1943-0655
volume: 8
issue: 2
Appears in Collections:2016

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Title: Remote Magnetic Field Sensor Based on Intracavity Absorption of Evanescent Field
Authors: Jia Shi;Yuye Wang;Degang Xu;Genghua Su;Haiwei Zhang;Jiachen Feng;Chao Yan;Shijie Fu;Jianquan Yao
subject: Fiber optics sensors|intracavity sensing|remote sensing
Year: 2016
Publisher: IEEE
Abstract: In this paper, a remote magnetic field sensor based on intracavity absorption of evanescent field is experimentally demonstrated. A single-mode-no-core-single-mode (SNCS) fiber coated with magnetic fluid (MF) is inserted into a fiber ring laser through a circulator and a 3-dB coupler, and it works as the filter and sensing head simultaneously. As the light oscillates in the cavity of the fiber ring laser, intracavity absorption of the evanescent field will be induced in the interface of the no-core fiber and MF. We obtain a magnetic field sensor with a narrow 3-dB bandwidth that is less than 0.05 nm, a high signal-to-noise ratio ~40 dB, and magnetic sensitivity of 52.1 pm/mT and -0.3679 dBm/mT. Moreover, experiments show that it is convenient to achieve remote sensing by selecting different lengths of the transmission optical fiber connecting the circulator and 3-dB coupler, which has a slight impact on the sensitivity.
Description: 
URI: http://localhost/handle/Hannan/159998
http://localhost/handle/Hannan/653359
ISSN: 1943-0655
volume: 8
issue: 2
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7425144.pdf689.29 kBAdobe PDFThumbnail
Preview File
Title: Remote Magnetic Field Sensor Based on Intracavity Absorption of Evanescent Field
Authors: Jia Shi;Yuye Wang;Degang Xu;Genghua Su;Haiwei Zhang;Jiachen Feng;Chao Yan;Shijie Fu;Jianquan Yao
subject: Fiber optics sensors|intracavity sensing|remote sensing
Year: 2016
Publisher: IEEE
Abstract: In this paper, a remote magnetic field sensor based on intracavity absorption of evanescent field is experimentally demonstrated. A single-mode-no-core-single-mode (SNCS) fiber coated with magnetic fluid (MF) is inserted into a fiber ring laser through a circulator and a 3-dB coupler, and it works as the filter and sensing head simultaneously. As the light oscillates in the cavity of the fiber ring laser, intracavity absorption of the evanescent field will be induced in the interface of the no-core fiber and MF. We obtain a magnetic field sensor with a narrow 3-dB bandwidth that is less than 0.05 nm, a high signal-to-noise ratio ~40 dB, and magnetic sensitivity of 52.1 pm/mT and -0.3679 dBm/mT. Moreover, experiments show that it is convenient to achieve remote sensing by selecting different lengths of the transmission optical fiber connecting the circulator and 3-dB coupler, which has a slight impact on the sensitivity.
Description: 
URI: http://localhost/handle/Hannan/159998
http://localhost/handle/Hannan/653359
ISSN: 1943-0655
volume: 8
issue: 2
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7425144.pdf689.29 kBAdobe PDFThumbnail
Preview File