Science and Engineer Importance to Singapore

Singapore has boosted its water supply through water-recycling and also increased its land area by reclaiming land, all feats accomplished by engineers. And engineering will continue to be important for Singapore's future, as the country works towards becoming a smart nation and overcoming its lack of resources
Prime Minister Lee Hsien Loong
(50th anniversary celebration of the IES)

Wednesday, March 4, 2020

Logo of LIM Jun Long

Paper: Most recent research publication on Fiber Bragg Grating (FBG) sensor

Although I have been working with Fiber Bragg Grating (FBG) sensor since 2010, I haven't been publishing a lot on this topic and the most recent paper is at ResearchGate


Ruggedised low frequency range vibration sensor using fiber Bragg gratings


We report a fiber optic vibration sensor developed from a Fiber Bragg Grating (FBG) sensor. Three FBG vibration sensors are constructed and subjected to drop test, vibration test and mock train-railway positioning test. All the Bragg wavelengths of the sensors, as well as the Fast Fourier Transform (FFT) graphs are recorded by a computer via an FBG interrogator. Two commercial FBG vibration sensors are also tested for comparison. The results show that the fabricated sensors are robust, pick up low frequency vibrations, and detect a mini train position on a railway simulation.


This work is in part by the MOE-I2R Science Mentorship Programmes 2016 under the Singapore’s Ministry of Education.

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