Ultrahigh sensitivity refractive index sensor based on optical microfiber
Ji, Wen Bin
Liu, Huan Huan
Tjin, Swee Chuan
Chow, Kin Kee
Date of Issue2012
School of Electrical and Electronic Engineering
Photonics Research Centre
We demonstrate a nonadiabatic microfiber sensor with a taper diameter of few micrometers. The modal interference caused by the abrupt taper results in a sinusoidal spectral response. The wavelength shift arising because of the changes in the external refractive index is found to be significant, achieving a maximum sensitivity of 18681.82 nm/RIU. The measured results show good agreement with the theoretical predictions. The high sensitivity and the simplicity offer the sensor the potential for many real applications.
DRNTU::Engineering::Electrical and electronic engineering
IEEE photonics technology letters
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