Title :
Microfiber-based devices: Current sensor and tunable laser
Author :
Harun, S.W. ; Sulaiman, A. ; Ahmad, H.
Author_Institution :
Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia
Abstract :
Microfibers and its knot resonator structure are fabricated using a flame-brushing technique for current sensor and tunable Erbium-doped fiber laser (EDFL) applications. A compact current sensor using a microfiber knot resonator (MKR) is demonstrated based on idea of measuring the thermally induced resonant wavelength shift as a result of heat produced due to the flow of electric current over a copper rod. A tunable fiber laser is also demonstrated using a MKR structure made by a highly doped Erbium fiber. A stable laser output is achieved at 1533nm region with a signal to noise ratio (SNR) of 15dB. With the assistance of a copper wire touching the circumference of the ring, the peak wavelength of the laser can be tuned from 1533.3nm to 1533.9nm as the loading current is increased from 0 to 1.0 A.
Keywords :
electric sensing devices; erbium; fibre lasers; fibre optic sensors; holey fibres; laser cavity resonators; laser stability; laser tuning; optical fibre fabrication; copper wire touching; current 0 A to 1.0 A; current sensor; electric current flow; flame-brushing technique; microfiber knot resonator; microfiber-based devices; signal-to-noise ratio; stable laser output; thermally induced resonant wavelength shift; tunable erbium-doped fiber laser; wavelength 1533 nm to 1533.9 nm; Wavelength tunability; current sensor; micro-fiber knot resonator;
Conference_Titel :
Photonics (ICP), 2011 IEEE 2nd International Conference on
Conference_Location :
Kata Kinabalu
Print_ISBN :
978-1-61284-265-3
Electronic_ISBN :
978-1-61284-263-9
DOI :
10.1109/ICP.2011.6106813
