Spectral tuning of a locally bent microfiber taper interferometer with a nanosized liquid crystal overlay.
Appl Opt
; 55(26): 7393-8, 2016 Sep 10.
Article
en En
| MEDLINE
| ID: mdl-27661380
ABSTRACT
In this paper, the tuning characteristics of locally bent microfiber taper covered with a nanosized high-refractive-index liquid crystal (LC) layer under different temperatures and electric field intensities have been theoretically analyzed and experimentally investigated. A locally bent microfiber taper interferometer with a waist diameter of â¼3.72 µm is fabricated by using the flame brushing technique, followed by bending the transition region of the taper to form a modal interferometer and later by placing a â¼200 nm LC layer over the uniform taper waist region. Experimental results indicate that a high-efficiency thermal or electric tuning of an LC-coated locally bent microfiber taper interferometer could be achieved. This suggests a potential application of this device as tunable all-fiber photonic devices, such as filters, modulators, and sensing elements.
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MEDLINE
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Appl Opt
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2016
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Article