A high-frequency accelerometer based on distributed bragg reflector fiber laser

Kuanglu Yu; Chun Cheung Lai; Chongqing Wu; Yao Zhao; Chao Lu; Hwa Yaw Tam

doi:10.1109/LPT.2014.2326558

A high-frequency accelerometer based on distributed bragg reflector fiber laser

Kuanglu Yu, Chun Cheung Lai, Chongqing Wu, Yao Zhao, Chao Lu, Hwa Yaw Tam

The Hong Kong Polytechnic University

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

8 Citations (Scopus)

Abstract

We propose an optical accelerometer based on distributed Bragg reflector (DBR) fiber laser sensor. The transducer's vibration reduces the birefringence of the preloaded fiber laser and consequently changes the beat frequency of the two orthogonally polarized lasing modes, thus the frequency can be used to retrieve the acceleration information. The DBR probe is a segment of bare erbium fiber, which has a very high natural frequency of vibration. Experimental results show that sensitivity of 4.810 MHz/g with a dynamic range of 0.01g-5g (where g = 9.8 m/s2 is the gravity of the earth) and natural frequency of ∼ 1.3 kHz can be obtained with this sensing system.

Original language	English
Article number	6824791
Pages (from-to)	1418-1421
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	26
Issue number	14
DOIs	https://doi.org/10.1109/LPT.2014.2326558
Publication status	Published - 15 Jul 2014

Keywords

accelerometer
DBR laser
Fiber optics sensors
vibration measurements

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials

More information

10.1109/LPT.2014.2326558

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abstract = "We propose an optical accelerometer based on distributed Bragg reflector (DBR) fiber laser sensor. The transducer's vibration reduces the birefringence of the preloaded fiber laser and consequently changes the beat frequency of the two orthogonally polarized lasing modes, thus the frequency can be used to retrieve the acceleration information. The DBR probe is a segment of bare erbium fiber, which has a very high natural frequency of vibration. Experimental results show that sensitivity of 4.810 MHz/g with a dynamic range of 0.01g-5g (where g = 9.8 m/s2 is the gravity of the earth) and natural frequency of ∼ 1.3 kHz can be obtained with this sensing system.",

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AU - Yu, Kuanglu

AU - Lai, Chun Cheung

AU - Wu, Chongqing

AU - Zhao, Yao

AU - Lu, Chao

AU - Tam, Hwa Yaw

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AB - We propose an optical accelerometer based on distributed Bragg reflector (DBR) fiber laser sensor. The transducer's vibration reduces the birefringence of the preloaded fiber laser and consequently changes the beat frequency of the two orthogonally polarized lasing modes, thus the frequency can be used to retrieve the acceleration information. The DBR probe is a segment of bare erbium fiber, which has a very high natural frequency of vibration. Experimental results show that sensitivity of 4.810 MHz/g with a dynamic range of 0.01g-5g (where g = 9.8 m/s2 is the gravity of the earth) and natural frequency of ∼ 1.3 kHz can be obtained with this sensing system.

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A high-frequency accelerometer based on distributed bragg reflector fiber laser

Abstract

Keywords

ASJC Scopus subject areas

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