Realization of spectral tunable filter based on thermal effect in microfiber structure

Nodehi, S. and Mohammed, W.S. and Ahmad, Harith and Harun, Sulaiman Wadi (2016) Realization of spectral tunable filter based on thermal effect in microfiber structure. Optical Fiber Technology, 28. pp. 38-41. ISSN 1068-5200, DOI

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This paper demonstrates a new approach for tuning the extinction ratio of a complex microfiber structure output using thermal effect. The microfiber filter device comprises of a microfiber Mach-Zehnder interferometer followed a knot structure, where temperature is controlled by a DC current applied to a copper wire placed inside the knot. This enables electrical tuning, where applying electrical current increases the temperature and affects the optical path. The change of temperature facilitates the fine tuning of the resonance output spectrum. From the experiment, it was observed that the extinction ratio of the output comb spectrum can be controlled within 2 dB to 10 dB by varying the current rating from 0 A to 1.22 A.

Item Type: Article
Uncontrolled Keywords: Fiber knots; Optical filter; Fiber resonator; Interferometry
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 11 Oct 2017 02:15
Last Modified: 09 Oct 2018 03:50

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