@article{500e49452302475b8432c567230aadcb,
title = "High sensitivity polymer optical fiber-bragg-grating-based accelerometer",
abstract = "We report on the fabrication and characterization of the first accelerometer based on a polymer optical fiber Bragg grating (FBG) for operation at both 850 and 1550 nm. The devices have a flat frequency response over a 1-kHz bandwidth and a resonance frequency of about 3 kHz. The response is linear up to at least 15 g and sensitivities as high as 19 pm/g (shift in resonance wavelength per unit acceleration) have been demonstrated. Given that 15 g corresponds to a strain of less than 0.02% and that polymer fibers have an elastic limit of more than 1%, the polymer FBG accelerometer can measure very strong accelerations. We compare with corresponding silica FBG accelerometers and demonstrate that using polymer FBGs improves the sensitivity by more than a factor of four and increases the figure of merit, defined as the sensitivity times the resonance frequency squared.",
keywords = "Accelerometer, fiber Bragg grating, optical fiber sensor, polymer optical fiber",
author = "Alessio Stefani and S{\o}ren Andresen and Wu Yuan and Nicolai Herholdt-Rasmussen and Ole Bang",
note = "Funding Information: Manuscript received November 4, 2011; revised January 25, 2012; accepted February 5, 2012. Date of publication February 14, 2012; date of current version April 11, 2012. This work was supported in part by the Danish National Advanced Technology Foundation. A. Stefani and O. Bang are with DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Kgs. Lyngby 2800, Denmark (e-mail: alste@fotonik.dtu.dk; oban@fotonik.dtu.dk). S. Andresen is with Br{\"u}el and Kj{\ae}r Sound and Vibration Measurement A/S, N{\ae}rum 2850, Denmark (e-mail: soren.andresen@bksv.com). W. Yuan is with the Singapore Institute of Manufacturing Technology, 638075, Singapore (e-mail: wyuan@SIMTech.a-star.edu.sg). N. Herholdt-Rasmussen is with Ibsen Photonics A/S, Farum 3520, Denmark (e-mail: Nicolai.Herholdt-Rasmussen@ibsen.dk). Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2012.2188024 Fig. 1. Schematic of the accelerometer characterization setup. Top mPOF cross section. Bottom inset: mPOF FBG-based accelerometer.",
year = "2012",
doi = "10.1109/LPT.2012.2188024",
language = "English (US)",
volume = "24",
pages = "763--765",
journal = "IEEE Photonics Technology Letters",
issn = "1041-1135",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "9",
}