NDLI: Electrical modulation of an etched long-period fiber grating with a liquid-crystal cladding

Content Provider	IEEE Xplore Digital Library
Author	Yoonchan Jeong Hak-Rin Kim Seungin Baek Yonghyun Kim Yong Wook Lee Byoungho Lee Sin-Doo Lee
Copyright Year	2001
Description	Author affiliation: Sch. of Electr. Eng., Seoul Nat. Univ., South Korea (Yoonchan Jeong)
Abstract	The development of optical fiber communication systems has required passive devices of flexible characteristics. Recently, controllable long-period fiber gratings (LPFGs) devices have been demonstrated using liquid crystals (LCs), where the nematic director of the LC is electrically controlled. The LC material can be placed either in a core or cladding region. The optical characteristics of the LC depend on the orientation of the director because the director, i.e., the optic-axis direction of the LC, determines the effective index for the light transmission. These can be utilized as dynamic-gain-flattening filters in broadband amplifier modules and as controllable polarization-dependent loss (PDL) compensators. In this paper, we present the electrical modulation of an etched LPFG with a liquid-crystal cladding, in which the controllability and the stability of the LC-cladding LPFG are improved by reducing the diameter of the optical fiber to 50 /spl mu/m by means of chemical etching.
Starting Page	780
Ending Page	781
File Size	201936
Page Count	2
File Format	PDF
ISBN	0780371054
ISSN	10928081
DOI	10.1109/LEOS.2001.969047
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-11-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Etching Fiber gratings Optical fiber communication Optical fiber polarization Optical fiber devices Communication system control Liquid crystal devices Liquid crystals Stimulated emission Optical filters
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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