Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal

Photonic crystals (PCs) have many potential applications because of their ability to control light-wave propagation and because PC-based waveguides may be integrated into optical circuits. We propose a novel tunable PC channel drop filter based on nematic liquid crystals and investigate its properti...

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Main Authors:	Chen-Yang Liu, Lien-Wen Chen
Format:	Article
Language:	English
Published:	Hindawi Limited 2006-01-01
Series:	Journal of Nanomaterials
Online Access:	http://dx.doi.org/10.1155/JNM/2006/52946

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record_format	Article
spelling	doaj-2512d746b5bf4b93b091500f03ec3b042020-11-24T20:53:18ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292006-01-01200610.1155/JNM/2006/5294652946Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid CrystalChen-Yang Liu0Lien-Wen Chen1Department of Mechanical Engineering, National Cheng Kung University, No.1, Ta-Hsueh Road, Tainan 701, TaiwanDepartment of Mechanical Engineering, National Cheng Kung University, No.1, Ta-Hsueh Road, Tainan 701, TaiwanPhotonic crystals (PCs) have many potential applications because of their ability to control light-wave propagation and because PC-based waveguides may be integrated into optical circuits. We propose a novel tunable PC channel drop filter based on nematic liquid crystals and investigate its properties numerically by using the finite-difference time-domain (FDTD) method. The refractive indices of liquid crystals can be actively modulated after infiltrating nematic liquid crystals into the microcavity in PC waveguides with square lattices. Then we can control light propagation in a PC waveguide. We analyze the Q-factors and resonance frequencies of a tunable PC channel drop filter by considering various indices modulation of liquid crystals. The novel component can be used as wavelength division multiplexing in photonic integrated circuits.http://dx.doi.org/10.1155/JNM/2006/52946
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Chen-Yang Liu Lien-Wen Chen
spellingShingle	Chen-Yang Liu Lien-Wen Chen Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal Journal of Nanomaterials
author_facet	Chen-Yang Liu Lien-Wen Chen
author_sort	Chen-Yang Liu
title	Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal
title_short	Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal
title_full	Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal
title_fullStr	Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal
title_full_unstemmed	Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal
title_sort	tunable channel drop filter in a two-dimensional photonic crystal modulated by a nematic liquid crystal
publisher	Hindawi Limited
series	Journal of Nanomaterials
issn	1687-4110 1687-4129
publishDate	2006-01-01
description	Photonic crystals (PCs) have many potential applications because of their ability to control light-wave propagation and because PC-based waveguides may be integrated into optical circuits. We propose a novel tunable PC channel drop filter based on nematic liquid crystals and investigate its properties numerically by using the finite-difference time-domain (FDTD) method. The refractive indices of liquid crystals can be actively modulated after infiltrating nematic liquid crystals into the microcavity in PC waveguides with square lattices. Then we can control light propagation in a PC waveguide. We analyze the Q-factors and resonance frequencies of a tunable PC channel drop filter by considering various indices modulation of liquid crystals. The novel component can be used as wavelength division multiplexing in photonic integrated circuits.
url	http://dx.doi.org/10.1155/JNM/2006/52946
work_keys_str_mv	AT chenyangliu tunablechanneldropfilterinatwodimensionalphotoniccrystalmodulatedbyanematicliquidcrystal AT lienwenchen tunablechanneldropfilterinatwodimensionalphotoniccrystalmodulatedbyanematicliquidcrystal
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Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal

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