Optically controllable variable fiber optical attenuator integrated in conventional optical fiber |
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Authors: | Ivan Martincek Dusan Pudis |
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Affiliation: | Department of Physics, Faculty of Electrical Engineering, University of Zilina, Univerzitna 1, SK-010 26 Zilina, Slovakia |
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Abstract: | New type of optically controllable variable fiber optical attenuator based on thermo-optical effect in liquid cladding of optical fiber is described. The thermo-optical effect in liquid cladding optical fiber causes refractive index contrast changes in core–cladding interface, what enables to change the propagating optical signal power with temperature. The temperature change is achieved by fiber based heating element using laser radiation. Attenuation up to −12 dB was achieved in static dependence and dynamic response confirmed rise time up to 24 ms. |
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Keywords: | Variable fiber optical attenuator Optical fiber device |
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