Current sensor based on microfiber knot resonator

Current sensor based on microfiber knot resonator

A compact current sensor using a microfiber knot resonator (MKR) is demonstrated. With the assistance of a copper wire that is wrapped by the microfiber knot, resonant wavelength inside the MKR can be tuned by applying electric current to the copper wire. The resonant wavelength change is based on t...

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Bibliographic Details
Main Authors: Lim, Kok Sing, Harun, Sulaiman Wadi, Damanhuri, Siti Sarah Ahmad, Jasim, Ali Abdulhadi, Tio, C.K., Ahmad, Harith
Format: Article
Published: Elsevier 2011
Subjects:
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.um.edu.my/19843/
https://doi.org/10.1016/j.sna.2011.02.036
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Institution: Universiti Malaya
Description
Summary:A compact current sensor using a microfiber knot resonator (MKR) is demonstrated. With the assistance of a copper wire that is wrapped by the microfiber knot, resonant wavelength inside the MKR can be tuned by applying electric current to the copper wire. The resonant wavelength change is based on the thermally induced optical phase shift in the MKR due to the heat produced by the flow of electric current over a short transit length. It is shown that the wavelength shift is linearly proportional to the square of the amount of current and the maximum tuning slope of 51.3 pm/A2 is achieved using a newly fabricated MKR.

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