Abstract

The only effective method of fiber Bragg grating (FBG) strain modulation has been by changing the distance between its two fixed ends. We demonstrate an alternative that is more sensitive to force based on the nonlinear amplification relationship between a transverse force applied to a stretched string and its induced axial force. It may improve the sensitivity and size of an FBG force sensor, reduce the number of FBGs needed for multiaxial force monitoring, and control the resonant frequency of an FBG accelerometer.

© 2013 Optical Society of America

Maximum amplification of a string transverse-force amplifier in fiber Bragg grating accelerometers

Kuo Li, Tommy H. T. Chan, Man Hong Yau, David P. Thambiratnam, and Hwa Yaw Tam
OSA Continuum 2(3) 938-945 (2019)

Very sensitive fiber Bragg grating accelerometer using transverse forces with an easy over-range protection and low cross axial sensitivity

Kuo Li, Tommy H. T. Chan, Man Hong Yau, Theanh Nguyen, David P. Thambiratnam, and Hwa Yaw Tam
Appl. Opt. 52(25) 6401-6410 (2013)

Experimental verification of the modified spring-mass theory of fiber Bragg grating accelerometers using transverse forces

Kuo Li, Tommy H. T. Chan, Man Hong Yau, David P. Thambiratnam, and Hwa Yaw Tam
Appl. Opt. 53(6) 1200-1211 (2014)

Fiber Bragg grating-based plane strain monitoring of aerostat envelope structures

Ji-an Chen, Di Huang, Hai-tao Zhao, Quan-bao Wang, Ye Qiu, and Deng-ping Duan
Appl. Opt. 52(19) 4631-4639 (2013)

Simultaneous measurement of curvature and strain based on fiber Bragg grating in two-dimensional waveguide array fiber

Zhifang Wu, Yan-Ge Liu, Zhi Wang, Meng Jiang, Wenbin Ji, Tingting Han, Shuo Li, Xuguang Shao, Xuan Quyen Dinh, Swee Chuan Tjin, and Perry Ping Shum
Opt. Lett. 38(20) 4070-4073 (2013)