Spectral tuning of a locally bent microfiber taper interferometer with a nanosized liquid crystal overlay

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...

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Published in:Applied optics (2004) 2016-09, Vol.55 (26), p.7393-7398
Main Authors: Luo, Haimei, Wang, Changjing, Ji, Yinghua, Yuan, Wen, Zhang, Guoping, Wang, Yifan, Hong, Zehua, Wang, Xianping
Format: Article
Language:English
Subjects:
Devices
Interferometers
Liquid crystals
Microfibers
Modulators
Nanostructure
Spectra
Tuning
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container_issue 26
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container_title Applied optics (2004)
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creator Luo, Haimei
Wang, Changjing
Ji, Yinghua
Yuan, Wen
Zhang, Guoping
Wang, Yifan
Hong, Zehua
Wang, Xianping
description 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 ∼3.72  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 ∼200  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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subjects Devices
Interferometers
Liquid crystals
Microfibers
Modulators
Nanostructure
Spectra
Tuning
title Spectral tuning of a locally bent microfiber taper interferometer with a nanosized liquid crystal overlay
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