Active interrogation technique for wavelength-division-multiplexed fiber Bragg grating sensor system

Youlong Yu; Hwa Yaw Tam; Wenghong Chung

doi:10.1117/12.446626

Active interrogation technique for wavelength-division-multiplexed fiber Bragg grating sensor system

Youlong Yu, Hwa Yaw Tam, Wenghong Chung

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

An active interrogation technique for a 16-cascaded wavelength-division multiplexing fiber Bragg grating sensor system is proposed. The system has been demonstrated using a combination of a feedback control technique, which makes the transmission of an employed tunable F-P filter track the Bragg wavelength of the interrogated sensor automatically, and a technique for choosing the output wavelength of a ring-compounded-cavity fiber laser by tuning the applied voltage of the filter. Demodulated by using an unbalanced scanning Michelson interferometer, a sensitivity of 1.682 Deg/με has been achieved.

Original language	English
Pages (from-to)	277-281
Number of pages	5
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4595
DOIs	https://doi.org/10.1117/12.446626
Publication status	Published - 1 Jan 2001

Keywords

Demodulation and fiber Bragg grating sensor system
Fiber Bragg grating
Interrogation
Ring-cavity fiber laser
Wavelength-division multiplexed

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.446626

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abstract = "An active interrogation technique for a 16-cascaded wavelength-division multiplexing fiber Bragg grating sensor system is proposed. The system has been demonstrated using a combination of a feedback control technique, which makes the transmission of an employed tunable F-P filter track the Bragg wavelength of the interrogated sensor automatically, and a technique for choosing the output wavelength of a ring-compounded-cavity fiber laser by tuning the applied voltage of the filter. Demodulated by using an unbalanced scanning Michelson interferometer, a sensitivity of 1.682 Deg/με has been achieved.",

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Active interrogation technique for wavelength-division-multiplexed fiber Bragg grating sensor system

Abstract

Keywords

ASJC Scopus subject areas

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