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)

Saturday, August 1, 2015

Logo of LIM Jun Long

Investigation of temperature sensitivity under the influence of coupling strength between a silica core and a satellite waveguide in a photonic crystal fiber with selective infiltration of glycerin

Jun Long Lim, et al.

  • Photonic Technology Department, Institute for Infocomm Research, A*STAR, Singapore 
  • School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 
  • College of Science, Donghua University, Shanghai, China 
  • School of Optical and Electronical Information, Huazhong University of Science and Technology, Wuhan, Hubei, China
Publication date
8th International Conference on Materials for Advanced Technologies/ Photonics Global Conference 2015
Procedia Engineering, Elsevier
In this report, we carry out simulation and experimental investigations of directional coupler structures with different separations between the glycerin selectively infiltrated channel and silica core of a large mode area Photonic Crystal Fiber (PCF). We assess their coupling characteristics and the corresponding temperature sensing capabilities. The temperature sensitivities of the glycerin selectively infiltrated channel adjacent to the silica core and two periods away from the silica core are −3.115 nm/°C and −2.332 nm/°C respectively. The glycerin selectively infiltrated channel three periods away from the silica core displays −107.8 pm/°C, an order of magnitude less temperature sensitive. The simulation results agree with the experimental results that there is a strong correlation between the coupling strength of the glycerin selectively infiltrated channel and the silica core, affecting its temperature response.

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