Improved-bonding linearly chirped fiber grating for a high-sensitivity surface-mounted strain sensor

Abstract

For a competitive sensor, both the sensitivity enhancement and calibration convenience are important. However, for surface-mounted fiber grating strain sensors, researchers in previous studies have seldom addressed these two capabilities simultaneously. Using the coupled-mode theory, we calculated the voltage signals from the filtered spectral-power interrogation system for a fiber Bragg grating with a glued grating or with a glue-free grating subject to different strain fields. Under a grating zone (the targeted surface), a one-dimensional linearly varied strain field, described by both the parameters of the average strain and the strain gradient, was considered. Finally, a simple and easy formula is provided (the improved-bonding linearly chirped fiber grating) to achieve both the sensitivity enhancement and calibration convenience at the same time for the strain sensor.

© 2010 Optical Society of America

Analysis of strain transfer of six-layer surface-bonded fiber Bragg gratings

Quan-bao Wang, Ye Qiu, Hai-tao Zhao, Ji-an Chen, Yue-ying Wang, and Zhen-min Fan
Appl. Opt. 51(18) 4129-4138 (2012)

Split Hopkinson bar measurement using high-speed full-spectrum fiber Bragg grating interrogation

Frederick Seng, Drew Hackney, Tyler Goode, LeGrand Shumway, Alec Hammond, George Shoemaker, Mark Pankow, Kara Peters, and Stephen Schultz
Appl. Opt. 55(25) 7179-7185 (2016)

State-of-strain evaluation with fiber Bragg grating rosettes: application to discrimination between strain and temperature effects in fiber sensors

Sylvain Magne, Stéphane Rougeault, Manuel Vilela, and Pierre Ferdinand
Appl. Opt. 36(36) 9437-9447 (1997)

Superstructured fiber-optic contact force sensor with minimal cosensitivity to temperature and axial strain

Christopher R. Dennison and Peter M. Wild
Appl. Opt. 51(9) 1188-1197 (2012)

Modeling, design, fabrication, and testing of a fiber Bragg grating strain sensor array

Abdeq M. Abdi, Shigeru Suzuki, Axel Schülzgen, and Alan R. Kost
Appl. Opt. 46(14) 2563-2574 (2007)