NDLI: Investigation of tuning characteristics of electrically tunable long-period gratings with a precise four-Layer model

Content Provider	IEEE Xplore Digital Library
Author	Qin Chen Lee, J. Minren Lin Yong Wang Yin, S.S. Qiming Zhang Reichard, K.M.
Copyright Year	1983
Abstract	In this paper, an investigation of the tuning characteristics of electrically tunable long-period gratings (LPGs) is presented. A precise four-layer model is used to quantitatively analyze the tuning potential of the gratings, and experimental data are provided to support the analysis. The four-layer model includes a silica core layer with an inscribed LPG, a thin silica cladding layer (/spl sim/40 /spl mu/m), an ultrathin (/spl sim/ 50 nm) high refractive index indium-tin dioxide (ITO) inner electrode layer, and a tunable electrooptic (E-O) polymer layer. It has been found that the inner electrode layer, made of high refractive index ITO, can be modeled as a high refractive index overlay and causes the forward-propagating modes in the thin silica cladding to reorganize as the ambient refractive index changes. This reorganization effect can lead to a significant increase (ten plus fold) in the tuning range of LPG tunable filters. Moreover, the required specifications of the tunable polymer layer are quantitatively analyzed. Finally, the required characteristics of the E-O polymer is realized by using a nanocomposite ferroelectric relaxor poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) terpolymer.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	2954
Ending Page	2962
Page Count	9
File Size	414799
File Format	PDF
ISSN	07338724
Volume Number	24
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Refractive index Fiber gratings Silicon compounds Indium tin oxide Electrodes Optical fiber filters Optical fiber devices Optical fiber sensors Polymer films Optical tuning optical fiber filters Electrooptic devices electrooptic polymers high index overlay long-period fiber gratings nanocomposite optical fiber devices
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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